truffle: src/os/aix/vm/perfMemory

annotate src/os/aix/vm/perfMemory_aix.cpp @ 21947:9f70fc90169d

Truffle: remove expensive assertion

author	Andreas Woess <andreas.woess@oracle.com>
date	Wed, 17 Jun 2015 04:09:30 +0200
parents	b9c06f87e476
children

rev	line source
14415 666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1 /*
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	2 * Copyright (c) 2001, 2013, Oracle and/or its affiliates. All rights reserved.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	3 * Copyright 2012, 2013 SAP AG. All rights reserved.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	5 *
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	6 * This code is free software; you can redistribute it and/or modify it
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	7 * under the terms of the GNU General Public License version 2 only, as
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	8 * published by the Free Software Foundation.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	9 *
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	10 * This code is distributed in the hope that it will be useful, but WITHOUT
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	13 * version 2 for more details (a copy is included in the LICENSE file that
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	14 * accompanied this code).
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	15 *
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	16 * You should have received a copy of the GNU General Public License version
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	17 * 2 along with this work; if not, write to the Free Software Foundation,
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	19 *
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	21 * or visit www.oracle.com if you need additional information or have any
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	22 * questions.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	23 *
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	24 */
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	25
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	26 #include "precompiled.hpp"
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	27 #include "classfile/vmSymbols.hpp"
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	28 #include "memory/allocation.inline.hpp"
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	29 #include "memory/resourceArea.hpp"
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	30 #include "oops/oop.inline.hpp"
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	31 #include "os_aix.inline.hpp"
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	32 #include "runtime/handles.inline.hpp"
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	33 #include "runtime/perfMemory.hpp"
20801 b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	34 #include "services/memTracker.hpp"
14415 666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	35 #include "utilities/exceptions.hpp"
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	36
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	37 // put OS-includes here
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	38 # include <sys/types.h>
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	39 # include <sys/mman.h>
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	40 # include <errno.h>
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	41 # include <stdio.h>
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	42 # include <unistd.h>
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	43 # include <sys/stat.h>
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	44 # include <signal.h>
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	45 # include <pwd.h>
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	46
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	47 static char* backing_store_file_name = NULL; // name of the backing store
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	48 // file, if successfully created.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	49
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	50 // Standard Memory Implementation Details
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	51
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	52 // create the PerfData memory region in standard memory.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	53 //
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	54 static char* create_standard_memory(size_t size) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	55
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	56 // allocate an aligned chuck of memory
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	57 char* mapAddress = os::reserve_memory(size);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	58
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	59 if (mapAddress == NULL) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	60 return NULL;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	61 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	62
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	63 // commit memory
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	64 if (!os::commit_memory(mapAddress, size, !ExecMem)) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	65 if (PrintMiscellaneous && Verbose) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	66 warning("Could not commit PerfData memory\n");
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	67 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	68 os::release_memory(mapAddress, size);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	69 return NULL;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	70 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	71
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	72 return mapAddress;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	73 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	74
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	75 // delete the PerfData memory region
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	76 //
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	77 static void delete_standard_memory(char* addr, size_t size) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	78
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	79 // there are no persistent external resources to cleanup for standard
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	80 // memory. since DestroyJavaVM does not support unloading of the JVM,
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	81 // cleanup of the memory resource is not performed. The memory will be
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	82 // reclaimed by the OS upon termination of the process.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	83 //
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	84 return;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	85 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	86
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	87 // save the specified memory region to the given file
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	88 //
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	89 // Note: this function might be called from signal handler (by os::abort()),
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	90 // don't allocate heap memory.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	91 //
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	92 static void save_memory_to_file(char* addr, size_t size) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	93
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	94 const char* destfile = PerfMemory::get_perfdata_file_path();
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	95 assert(destfile[0] != '\0', "invalid PerfData file path");
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	96
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	97 int result;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	98
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	99 RESTARTABLE(::open(destfile, O_CREAT\|O_WRONLY\|O_TRUNC, S_IREAD\|S_IWRITE),
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	100 result);;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	101 if (result == OS_ERR) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	102 if (PrintMiscellaneous && Verbose) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	103 warning("Could not create Perfdata save file: %s: %s\n",
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	104 destfile, strerror(errno));
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	105 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	106 } else {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	107 int fd = result;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	108
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	109 for (size_t remaining = size; remaining > 0;) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	110
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	111 RESTARTABLE(::write(fd, addr, remaining), result);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	112 if (result == OS_ERR) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	113 if (PrintMiscellaneous && Verbose) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	114 warning("Could not write Perfdata save file: %s: %s\n",
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	115 destfile, strerror(errno));
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	116 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	117 break;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	118 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	119
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	120 remaining -= (size_t)result;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	121 addr += result;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	122 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	123
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	124 RESTARTABLE(::close(fd), result);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	125 if (PrintMiscellaneous && Verbose) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	126 if (result == OS_ERR) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	127 warning("Could not close %s: %s\n", destfile, strerror(errno));
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	128 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	129 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	130 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	131 FREE_C_HEAP_ARRAY(char, destfile, mtInternal);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	132 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	133
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	134
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	135 // Shared Memory Implementation Details
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	136
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	137 // Note: the solaris and linux shared memory implementation uses the mmap
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	138 // interface with a backing store file to implement named shared memory.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	139 // Using the file system as the name space for shared memory allows a
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	140 // common name space to be supported across a variety of platforms. It
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	141 // also provides a name space that Java applications can deal with through
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	142 // simple file apis.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	143 //
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	144 // The solaris and linux implementations store the backing store file in
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	145 // a user specific temporary directory located in the /tmp file system,
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	146 // which is always a local file system and is sometimes a RAM based file
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	147 // system.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	148
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	149 // return the user specific temporary directory name.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	150 //
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	151 // the caller is expected to free the allocated memory.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	152 //
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	153 static char* get_user_tmp_dir(const char* user) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	154
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	155 const char* tmpdir = os::get_temp_directory();
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	156 const char* perfdir = PERFDATA_NAME;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	157 size_t nbytes = strlen(tmpdir) + strlen(perfdir) + strlen(user) + 3;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	158 char* dirname = NEW_C_HEAP_ARRAY(char, nbytes, mtInternal);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	159
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	160 // construct the path name to user specific tmp directory
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	161 snprintf(dirname, nbytes, "%s/%s_%s", tmpdir, perfdir, user);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	162
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	163 return dirname;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	164 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	165
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	166 // convert the given file name into a process id. if the file
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	167 // does not meet the file naming constraints, return 0.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	168 //
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	169 static pid_t filename_to_pid(const char* filename) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	170
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	171 // a filename that doesn't begin with a digit is not a
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	172 // candidate for conversion.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	173 //
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	174 if (!isdigit(*filename)) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	175 return 0;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	176 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	177
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	178 // check if file name can be converted to an integer without
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	179 // any leftover characters.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	180 //
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	181 char* remainder = NULL;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	182 errno = 0;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	183 pid_t pid = (pid_t)strtol(filename, &remainder, 10);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	184
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	185 if (errno != 0) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	186 return 0;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	187 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	188
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	189 // check for left over characters. If any, then the filename is
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	190 // not a candidate for conversion.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	191 //
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	192 if (remainder != NULL && *remainder != '\0') {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	193 return 0;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	194 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	195
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	196 // successful conversion, return the pid
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	197 return pid;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	198 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	199
20801 b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	200 // Check if the given statbuf is considered a secure directory for
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	201 // the backing store files. Returns true if the directory is considered
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	202 // a secure location. Returns false if the statbuf is a symbolic link or
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	203 // if an error occurred.
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	204 static bool is_statbuf_secure(struct stat *statp) {
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	205 if (S_ISLNK(statp->st_mode) \|\| !S_ISDIR(statp->st_mode)) {
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	206 // The path represents a link or some non-directory file type,
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	207 // which is not what we expected. Declare it insecure.
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	208 //
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	209 return false;
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	210 }
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	211 // We have an existing directory, check if the permissions are safe.
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	212 if ((statp->st_mode & (S_IWGRP\|S_IWOTH)) != 0) {
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	213 // The directory is open for writing and could be subjected
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	214 // to a symlink or a hard link attack. Declare it insecure.
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	215 return false;
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	216 }
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	217 // See if the uid of the directory matches the effective uid of the process.
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	218 //
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	219 if (statp->st_uid != geteuid()) {
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	220 // The directory was not created by this user, declare it insecure.
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	221 return false;
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	222 }
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	223 return true;
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	224 }
14415 666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	225
20801 b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	226
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	227 // Check if the given path is considered a secure directory for
14415 666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	228 // the backing store files. Returns true if the directory exists
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	229 // and is considered a secure location. Returns false if the path
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	230 // is a symbolic link or if an error occurred.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	231 static bool is_directory_secure(const char* path) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	232 struct stat statbuf;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	233 int result = 0;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	234
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	235 RESTARTABLE(::lstat(path, &statbuf), result);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	236 if (result == OS_ERR) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	237 return false;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	238 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	239
20801 b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	240 // The path exists, see if it is secure.
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	241 return is_statbuf_secure(&statbuf);
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	242 }
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	243
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	244 // (Taken over from Solaris to support the O_NOFOLLOW case on AIX.)
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	245 // Check if the given directory file descriptor is considered a secure
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	246 // directory for the backing store files. Returns true if the directory
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	247 // exists and is considered a secure location. Returns false if the path
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	248 // is a symbolic link or if an error occurred.
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	249 static bool is_dirfd_secure(int dir_fd) {
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	250 struct stat statbuf;
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	251 int result = 0;
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	252
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	253 RESTARTABLE(::fstat(dir_fd, &statbuf), result);
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	254 if (result == OS_ERR) {
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	255 return false;
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	256 }
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	257
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	258 // The path exists, now check its mode.
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	259 return is_statbuf_secure(&statbuf);
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	260 }
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	261
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	262
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	263 // Check to make sure fd1 and fd2 are referencing the same file system object.
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	264 static bool is_same_fsobject(int fd1, int fd2) {
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	265 struct stat statbuf1;
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	266 struct stat statbuf2;
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	267 int result = 0;
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	268
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	269 RESTARTABLE(::fstat(fd1, &statbuf1), result);
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	270 if (result == OS_ERR) {
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	271 return false;
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	272 }
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	273 RESTARTABLE(::fstat(fd2, &statbuf2), result);
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	274 if (result == OS_ERR) {
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	275 return false;
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	276 }
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	277
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	278 if ((statbuf1.st_ino == statbuf2.st_ino) &&
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	279 (statbuf1.st_dev == statbuf2.st_dev)) {
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	280 return true;
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	281 } else {
14415 666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	282 return false;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	283 }
20801 b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	284 }
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	285
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	286 // Helper functions for open without O_NOFOLLOW which is not present on AIX 5.3/6.1.
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	287 // We use the jdk6 implementation here.
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	288 #ifndef O_NOFOLLOW
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	289 // The O_NOFOLLOW oflag doesn't exist before solaris 5.10, this is to simulate that behaviour
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	290 // was done in jdk 5/6 hotspot by Oracle this way
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	291 static int open_o_nofollow_impl(const char* path, int oflag, mode_t mode, bool use_mode) {
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	292 struct stat orig_st;
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	293 struct stat new_st;
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	294 bool create;
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	295 int error;
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	296 int fd;
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	297
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	298 create = false;
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	299
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	300 if (lstat(path, &orig_st) != 0) {
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	301 if (errno == ENOENT && (oflag & O_CREAT) != 0) {
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	302 // File doesn't exist, but_we want to create it, add O_EXCL flag
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	303 // to make sure no-one creates it (or a symlink) before us
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	304 // This works as we expect with symlinks, from posix man page:
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	305 // 'If O_EXCL and O_CREAT are set, and path names a symbolic
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	306 // link, open() shall fail and set errno to [EEXIST]'.
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	307 oflag \|= O_EXCL;
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	308 create = true;
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	309 } else {
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	310 // File doesn't exist, and we are not creating it.
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	311 return OS_ERR;
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	312 }
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	313 } else {
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	314 // Lstat success, check if existing file is a link.
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	315 if ((orig_st.st_mode & S_IFMT) == S_IFLNK) {
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	316 // File is a symlink.
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	317 errno = ELOOP;
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	318 return OS_ERR;
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	319 }
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	320 }
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	321
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	322 if (use_mode == true) {
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	323 fd = open(path, oflag, mode);
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	324 } else {
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	325 fd = open(path, oflag);
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	326 }
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	327
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	328 if (fd == OS_ERR) {
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	329 return fd;
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	330 }
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	331
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	332 // Can't do inode checks on before/after if we created the file.
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	333 if (create == false) {
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	334 if (fstat(fd, &new_st) != 0) {
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	335 // Keep errno from fstat, in case close also fails.
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	336 error = errno;
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	337 ::close(fd);
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	338 errno = error;
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	339 return OS_ERR;
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	340 }
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	341
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	342 if (orig_st.st_dev != new_st.st_dev \|\| orig_st.st_ino != new_st.st_ino) {
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	343 // File was tampered with during race window.
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	344 ::close(fd);
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	345 errno = EEXIST;
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	346 if (PrintMiscellaneous && Verbose) {
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	347 warning("possible file tampering attempt detected when opening %s", path);
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	348 }
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	349 return OS_ERR;
14415 666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	350 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	351 }
20801 b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	352
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	353 return fd;
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	354 }
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	355
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	356 static int open_o_nofollow(const char* path, int oflag, mode_t mode) {
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	357 return open_o_nofollow_impl(path, oflag, mode, true);
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	358 }
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	359
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	360 static int open_o_nofollow(const char* path, int oflag) {
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	361 return open_o_nofollow_impl(path, oflag, 0, false);
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	362 }
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	363 #endif
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	364
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	365 // Open the directory of the given path and validate it.
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	366 // Return a DIR * of the open directory.
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	367 static DIR open_directory_secure(const char dirname) {
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	368 // Open the directory using open() so that it can be verified
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	369 // to be secure by calling is_dirfd_secure(), opendir() and then check
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	370 // to see if they are the same file system object. This method does not
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	371 // introduce a window of opportunity for the directory to be attacked that
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	372 // calling opendir() and is_directory_secure() does.
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	373 int result;
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	374 DIR *dirp = NULL;
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	375
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	376 // No O_NOFOLLOW defined at buildtime, and it is not documented for open;
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	377 // so provide a workaround in this case.
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	378 #ifdef O_NOFOLLOW
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	379 RESTARTABLE(::open(dirname, O_RDONLY\|O_NOFOLLOW), result);
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	380 #else
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	381 // workaround (jdk6 coding)
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	382 RESTARTABLE(::open_o_nofollow(dirname, O_RDONLY), result);
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	383 #endif
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	384
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	385 if (result == OS_ERR) {
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	386 // Directory doesn't exist or is a symlink, so there is nothing to cleanup.
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	387 if (PrintMiscellaneous && Verbose) {
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	388 if (errno == ELOOP) {
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	389 warning("directory %s is a symlink and is not secure\n", dirname);
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	390 } else {
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	391 warning("could not open directory %s: %s\n", dirname, strerror(errno));
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	392 }
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	393 }
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	394 return dirp;
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	395 }
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	396 int fd = result;
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	397
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	398 // Determine if the open directory is secure.
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	399 if (!is_dirfd_secure(fd)) {
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	400 // The directory is not a secure directory.
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	401 os::close(fd);
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	402 return dirp;
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	403 }
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	404
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	405 // Open the directory.
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	406 dirp = ::opendir(dirname);
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	407 if (dirp == NULL) {
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	408 // The directory doesn't exist, close fd and return.
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	409 os::close(fd);
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	410 return dirp;
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	411 }
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	412
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	413 // Check to make sure fd and dirp are referencing the same file system object.
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	414 if (!is_same_fsobject(fd, dirp->dd_fd)) {
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	415 // The directory is not secure.
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	416 os::close(fd);
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	417 os::closedir(dirp);
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	418 dirp = NULL;
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	419 return dirp;
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	420 }
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	421
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	422 // Close initial open now that we know directory is secure
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	423 os::close(fd);
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	424
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	425 return dirp;
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	426 }
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	427
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	428 // NOTE: The code below uses fchdir(), open() and unlink() because
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	429 // fdopendir(), openat() and unlinkat() are not supported on all
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	430 // versions. Once the support for fdopendir(), openat() and unlinkat()
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	431 // is available on all supported versions the code can be changed
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	432 // to use these functions.
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	433
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	434 // Open the directory of the given path, validate it and set the
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	435 // current working directory to it.
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	436 // Return a DIR * of the open directory and the saved cwd fd.
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	437 //
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	438 static DIR open_directory_secure_cwd(const char dirname, int *saved_cwd_fd) {
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	439
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	440 // Open the directory.
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	441 DIR* dirp = open_directory_secure(dirname);
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	442 if (dirp == NULL) {
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	443 // Directory doesn't exist or is insecure, so there is nothing to cleanup.
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	444 return dirp;
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	445 }
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	446 int fd = dirp->dd_fd;
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	447
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	448 // Open a fd to the cwd and save it off.
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	449 int result;
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	450 RESTARTABLE(::open(".", O_RDONLY), result);
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	451 if (result == OS_ERR) {
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	452 *saved_cwd_fd = -1;
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	453 } else {
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	454 *saved_cwd_fd = result;
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	455 }
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	456
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	457 // Set the current directory to dirname by using the fd of the directory.
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	458 result = fchdir(fd);
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	459
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	460 return dirp;
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	461 }
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	462
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	463 // Close the directory and restore the current working directory.
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	464 static void close_directory_secure_cwd(DIR* dirp, int saved_cwd_fd) {
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	465
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	466 int result;
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	467 // If we have a saved cwd change back to it and close the fd.
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	468 if (saved_cwd_fd != -1) {
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	469 result = fchdir(saved_cwd_fd);
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	470 ::close(saved_cwd_fd);
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	471 }
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	472
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	473 // Close the directory.
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	474 os::closedir(dirp);
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	475 }
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	476
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	477 // Check if the given file descriptor is considered a secure.
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	478 static bool is_file_secure(int fd, const char *filename) {
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	479
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	480 int result;
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	481 struct stat statbuf;
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	482
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	483 // Determine if the file is secure.
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	484 RESTARTABLE(::fstat(fd, &statbuf), result);
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	485 if (result == OS_ERR) {
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	486 if (PrintMiscellaneous && Verbose) {
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	487 warning("fstat failed on %s: %s\n", filename, strerror(errno));
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	488 }
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	489 return false;
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	490 }
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	491 if (statbuf.st_nlink > 1) {
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	492 // A file with multiple links is not expected.
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	493 if (PrintMiscellaneous && Verbose) {
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	494 warning("file %s has multiple links\n", filename);
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	495 }
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	496 return false;
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	497 }
14415 666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	498 return true;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	499 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	500
20801 b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	501 // Return the user name for the given user id.
14415 666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	502 //
20801 b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	503 // The caller is expected to free the allocated memory.
14415 666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	504 static char* get_user_name(uid_t uid) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	505
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	506 struct passwd pwent;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	507
20801 b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	508 // Determine the max pwbuf size from sysconf, and hardcode
14415 666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	509 // a default if this not available through sysconf.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	510 long bufsize = sysconf(_SC_GETPW_R_SIZE_MAX);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	511 if (bufsize == -1)
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	512 bufsize = 1024;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	513
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	514 char* pwbuf = NEW_C_HEAP_ARRAY(char, bufsize, mtInternal);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	515
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	516 // POSIX interface to getpwuid_r is used on LINUX
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	517 struct passwd* p;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	518 int result = getpwuid_r(uid, &pwent, pwbuf, (size_t)bufsize, &p);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	519
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	520 if (result != 0 \|\| p == NULL \|\| p->pw_name == NULL \|\| *(p->pw_name) == '\0') {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	521 if (PrintMiscellaneous && Verbose) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	522 if (result != 0) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	523 warning("Could not retrieve passwd entry: %s\n",
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	524 strerror(result));
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	525 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	526 else if (p == NULL) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	527 // this check is added to protect against an observed problem
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	528 // with getpwuid_r() on RedHat 9 where getpwuid_r returns 0,
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	529 // indicating success, but has p == NULL. This was observed when
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	530 // inserting a file descriptor exhaustion fault prior to the call
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	531 // getpwuid_r() call. In this case, error is set to the appropriate
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	532 // error condition, but this is undocumented behavior. This check
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	533 // is safe under any condition, but the use of errno in the output
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	534 // message may result in an erroneous message.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	535 // Bug Id 89052 was opened with RedHat.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	536 //
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	537 warning("Could not retrieve passwd entry: %s\n",
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	538 strerror(errno));
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	539 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	540 else {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	541 warning("Could not determine user name: %s\n",
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	542 p->pw_name == NULL ? "pw_name = NULL" :
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	543 "pw_name zero length");
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	544 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	545 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	546 FREE_C_HEAP_ARRAY(char, pwbuf, mtInternal);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	547 return NULL;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	548 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	549
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	550 char* user_name = NEW_C_HEAP_ARRAY(char, strlen(p->pw_name) + 1, mtInternal);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	551 strcpy(user_name, p->pw_name);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	552
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	553 FREE_C_HEAP_ARRAY(char, pwbuf, mtInternal);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	554 return user_name;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	555 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	556
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	557 // return the name of the user that owns the process identified by vmid.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	558 //
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	559 // This method uses a slow directory search algorithm to find the backing
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	560 // store file for the specified vmid and returns the user name, as determined
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	561 // by the user name suffix of the hsperfdata_<username> directory name.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	562 //
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	563 // the caller is expected to free the allocated memory.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	564 //
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	565 static char* get_user_name_slow(int vmid, TRAPS) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	566
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	567 // short circuit the directory search if the process doesn't even exist.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	568 if (kill(vmid, 0) == OS_ERR) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	569 if (errno == ESRCH) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	570 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	571 "Process not found");
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	572 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	573 else /* EPERM */ {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	574 THROW_MSG_0(vmSymbols::java_io_IOException(), strerror(errno));
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	575 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	576 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	577
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	578 // directory search
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	579 char* oldest_user = NULL;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	580 time_t oldest_ctime = 0;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	581
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	582 const char* tmpdirname = os::get_temp_directory();
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	583
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	584 DIR* tmpdirp = os::opendir(tmpdirname);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	585
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	586 if (tmpdirp == NULL) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	587 return NULL;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	588 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	589
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	590 // for each entry in the directory that matches the pattern hsperfdata_*,
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	591 // open the directory and check if the file for the given vmid exists.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	592 // The file with the expected name and the latest creation date is used
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	593 // to determine the user name for the process id.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	594 //
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	595 struct dirent* dentry;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	596 char* tdbuf = NEW_C_HEAP_ARRAY(char, os::readdir_buf_size(tmpdirname), mtInternal);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	597 errno = 0;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	598 while ((dentry = os::readdir(tmpdirp, (struct dirent *)tdbuf)) != NULL) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	599
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	600 // check if the directory entry is a hsperfdata file
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	601 if (strncmp(dentry->d_name, PERFDATA_NAME, strlen(PERFDATA_NAME)) != 0) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	602 continue;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	603 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	604
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	605 char* usrdir_name = NEW_C_HEAP_ARRAY(char,
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	606 strlen(tmpdirname) + strlen(dentry->d_name) + 2, mtInternal);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	607 strcpy(usrdir_name, tmpdirname);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	608 strcat(usrdir_name, "/");
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	609 strcat(usrdir_name, dentry->d_name);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	610
20801 b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	611 // Open the user directory.
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	612 DIR* subdirp = open_directory_secure(usrdir_name);
14415 666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	613
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	614 if (subdirp == NULL) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	615 FREE_C_HEAP_ARRAY(char, usrdir_name, mtInternal);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	616 continue;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	617 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	618
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	619 // Since we don't create the backing store files in directories
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	620 // pointed to by symbolic links, we also don't follow them when
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	621 // looking for the files. We check for a symbolic link after the
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	622 // call to opendir in order to eliminate a small window where the
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	623 // symlink can be exploited.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	624 //
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	625 if (!is_directory_secure(usrdir_name)) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	626 FREE_C_HEAP_ARRAY(char, usrdir_name, mtInternal);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	627 os::closedir(subdirp);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	628 continue;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	629 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	630
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	631 struct dirent* udentry;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	632 char* udbuf = NEW_C_HEAP_ARRAY(char, os::readdir_buf_size(usrdir_name), mtInternal);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	633 errno = 0;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	634 while ((udentry = os::readdir(subdirp, (struct dirent *)udbuf)) != NULL) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	635
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	636 if (filename_to_pid(udentry->d_name) == vmid) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	637 struct stat statbuf;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	638 int result;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	639
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	640 char* filename = NEW_C_HEAP_ARRAY(char,
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	641 strlen(usrdir_name) + strlen(udentry->d_name) + 2, mtInternal);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	642
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	643 strcpy(filename, usrdir_name);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	644 strcat(filename, "/");
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	645 strcat(filename, udentry->d_name);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	646
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	647 // don't follow symbolic links for the file
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	648 RESTARTABLE(::lstat(filename, &statbuf), result);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	649 if (result == OS_ERR) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	650 FREE_C_HEAP_ARRAY(char, filename, mtInternal);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	651 continue;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	652 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	653
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	654 // skip over files that are not regular files.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	655 if (!S_ISREG(statbuf.st_mode)) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	656 FREE_C_HEAP_ARRAY(char, filename, mtInternal);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	657 continue;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	658 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	659
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	660 // compare and save filename with latest creation time
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	661 if (statbuf.st_size > 0 && statbuf.st_ctime > oldest_ctime) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	662
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	663 if (statbuf.st_ctime > oldest_ctime) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	664 char* user = strchr(dentry->d_name, '_') + 1;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	665
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	666 if (oldest_user != NULL) FREE_C_HEAP_ARRAY(char, oldest_user, mtInternal);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	667 oldest_user = NEW_C_HEAP_ARRAY(char, strlen(user)+1, mtInternal);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	668
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	669 strcpy(oldest_user, user);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	670 oldest_ctime = statbuf.st_ctime;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	671 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	672 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	673
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	674 FREE_C_HEAP_ARRAY(char, filename, mtInternal);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	675 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	676 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	677 os::closedir(subdirp);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	678 FREE_C_HEAP_ARRAY(char, udbuf, mtInternal);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	679 FREE_C_HEAP_ARRAY(char, usrdir_name, mtInternal);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	680 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	681 os::closedir(tmpdirp);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	682 FREE_C_HEAP_ARRAY(char, tdbuf, mtInternal);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	683
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	684 return(oldest_user);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	685 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	686
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	687 // return the name of the user that owns the JVM indicated by the given vmid.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	688 //
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	689 static char* get_user_name(int vmid, TRAPS) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	690 return get_user_name_slow(vmid, CHECK_NULL);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	691 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	692
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	693 // return the file name of the backing store file for the named
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	694 // shared memory region for the given user name and vmid.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	695 //
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	696 // the caller is expected to free the allocated memory.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	697 //
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	698 static char* get_sharedmem_filename(const char* dirname, int vmid) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	699
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	700 // add 2 for the file separator and a null terminator.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	701 size_t nbytes = strlen(dirname) + UINT_CHARS + 2;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	702
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	703 char* name = NEW_C_HEAP_ARRAY(char, nbytes, mtInternal);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	704 snprintf(name, nbytes, "%s/%d", dirname, vmid);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	705
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	706 return name;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	707 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	708
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	709
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	710 // remove file
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	711 //
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	712 // this method removes the file specified by the given path
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	713 //
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	714 static void remove_file(const char* path) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	715
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	716 int result;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	717
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	718 // if the file is a directory, the following unlink will fail. since
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	719 // we don't expect to find directories in the user temp directory, we
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	720 // won't try to handle this situation. even if accidentially or
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	721 // maliciously planted, the directory's presence won't hurt anything.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	722 //
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	723 RESTARTABLE(::unlink(path), result);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	724 if (PrintMiscellaneous && Verbose && result == OS_ERR) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	725 if (errno != ENOENT) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	726 warning("Could not unlink shared memory backing"
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	727 " store file %s : %s\n", path, strerror(errno));
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	728 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	729 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	730 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	731
20801 b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	732 // Cleanup stale shared memory resources
14415 666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	733 //
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	734 // This method attempts to remove all stale shared memory files in
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	735 // the named user temporary directory. It scans the named directory
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	736 // for files matching the pattern ^$[0-9]*$. For each file found, the
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	737 // process id is extracted from the file name and a test is run to
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	738 // determine if the process is alive. If the process is not alive,
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	739 // any stale file resources are removed.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	740 static void cleanup_sharedmem_resources(const char* dirname) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	741
20801 b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	742 int saved_cwd_fd;
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	743 // Open the directory.
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	744 DIR* dirp = open_directory_secure_cwd(dirname, &saved_cwd_fd);
14415 666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	745 if (dirp == NULL) {
20801 b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	746 // Directory doesn't exist or is insecure, so there is nothing to cleanup.
14415 666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	747 return;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	748 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	749
20801 b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	750 // For each entry in the directory that matches the expected file
14415 666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	751 // name pattern, determine if the file resources are stale and if
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	752 // so, remove the file resources. Note, instrumented HotSpot processes
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	753 // for this user may start and/or terminate during this search and
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	754 // remove or create new files in this directory. The behavior of this
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	755 // loop under these conditions is dependent upon the implementation of
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	756 // opendir/readdir.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	757 struct dirent* entry;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	758 char* dbuf = NEW_C_HEAP_ARRAY(char, os::readdir_buf_size(dirname), mtInternal);
20801 b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	759
14415 666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	760 errno = 0;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	761 while ((entry = os::readdir(dirp, (struct dirent *)dbuf)) != NULL) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	762
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	763 pid_t pid = filename_to_pid(entry->d_name);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	764
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	765 if (pid == 0) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	766
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	767 if (strcmp(entry->d_name, ".") != 0 && strcmp(entry->d_name, "..") != 0) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	768
20801 b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	769 // Attempt to remove all unexpected files, except "." and "..".
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	770 unlink(entry->d_name);
14415 666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	771 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	772
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	773 errno = 0;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	774 continue;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	775 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	776
20801 b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	777 // We now have a file name that converts to a valid integer
14415 666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	778 // that could represent a process id . if this process id
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	779 // matches the current process id or the process is not running,
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	780 // then remove the stale file resources.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	781 //
20801 b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	782 // Process liveness is detected by sending signal number 0 to
14415 666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	783 // the process id (see kill(2)). if kill determines that the
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	784 // process does not exist, then the file resources are removed.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	785 // if kill determines that that we don't have permission to
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	786 // signal the process, then the file resources are assumed to
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	787 // be stale and are removed because the resources for such a
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	788 // process should be in a different user specific directory.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	789 if ((pid == os::current_process_id()) \|\|
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	790 (kill(pid, 0) == OS_ERR && (errno == ESRCH \|\| errno == EPERM))) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	791
20801 b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	792 unlink(entry->d_name);
14415 666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	793 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	794 errno = 0;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	795 }
20801 b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	796
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	797 // Close the directory and reset the current working directory.
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	798 close_directory_secure_cwd(dirp, saved_cwd_fd);
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	799
14415 666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	800 FREE_C_HEAP_ARRAY(char, dbuf, mtInternal);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	801 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	802
20801 b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	803 // Make the user specific temporary directory. Returns true if
14415 666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	804 // the directory exists and is secure upon return. Returns false
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	805 // if the directory exists but is either a symlink, is otherwise
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	806 // insecure, or if an error occurred.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	807 static bool make_user_tmp_dir(const char* dirname) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	808
20801 b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	809 // Create the directory with 0755 permissions. note that the directory
14415 666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	810 // will be owned by euid::egid, which may not be the same as uid::gid.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	811 if (mkdir(dirname, S_IRWXU\|S_IRGRP\|S_IXGRP\|S_IROTH\|S_IXOTH) == OS_ERR) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	812 if (errno == EEXIST) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	813 // The directory already exists and was probably created by another
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	814 // JVM instance. However, this could also be the result of a
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	815 // deliberate symlink. Verify that the existing directory is safe.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	816 if (!is_directory_secure(dirname)) {
20801 b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	817 // Directory is not secure.
14415 666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	818 if (PrintMiscellaneous && Verbose) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	819 warning("%s directory is insecure\n", dirname);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	820 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	821 return false;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	822 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	823 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	824 else {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	825 // we encountered some other failure while attempting
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	826 // to create the directory
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	827 //
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	828 if (PrintMiscellaneous && Verbose) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	829 warning("could not create directory %s: %s\n",
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	830 dirname, strerror(errno));
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	831 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	832 return false;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	833 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	834 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	835 return true;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	836 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	837
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	838 // create the shared memory file resources
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	839 //
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	840 // This method creates the shared memory file with the given size
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	841 // This method also creates the user specific temporary directory, if
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	842 // it does not yet exist.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	843 //
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	844 static int create_sharedmem_resources(const char* dirname, const char* filename, size_t size) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	845
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	846 // make the user temporary directory
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	847 if (!make_user_tmp_dir(dirname)) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	848 // could not make/find the directory or the found directory
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	849 // was not secure
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	850 return -1;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	851 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	852
20801 b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	853 int saved_cwd_fd;
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	854 // Open the directory and set the current working directory to it.
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	855 DIR* dirp = open_directory_secure_cwd(dirname, &saved_cwd_fd);
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	856 if (dirp == NULL) {
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	857 // Directory doesn't exist or is insecure, so cannot create shared
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	858 // memory file.
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	859 return -1;
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	860 }
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	861
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	862 // Open the filename in the current directory.
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	863 // Cannot use O_TRUNC here; truncation of an existing file has to happen
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	864 // after the is_file_secure() check below.
14415 666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	865 int result;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	866
20801 b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	867 // No O_NOFOLLOW defined at buildtime, and it is not documented for open;
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	868 // so provide a workaround in this case.
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	869 #ifdef O_NOFOLLOW
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	870 RESTARTABLE(::open(filename, O_RDWR\|O_CREAT\|O_NOFOLLOW, S_IREAD\|S_IWRITE), result);
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	871 #else
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	872 // workaround function (jdk6 code)
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	873 RESTARTABLE(::open_o_nofollow(filename, O_RDWR\|O_CREAT, S_IREAD\|S_IWRITE), result);
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	874 #endif
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	875
14415 666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	876 if (result == OS_ERR) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	877 if (PrintMiscellaneous && Verbose) {
20801 b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	878 if (errno == ELOOP) {
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	879 warning("file %s is a symlink and is not secure\n", filename);
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	880 } else {
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	881 warning("could not create file %s: %s\n", filename, strerror(errno));
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	882 }
14415 666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	883 }
20801 b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	884 // Close the directory and reset the current working directory.
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	885 close_directory_secure_cwd(dirp, saved_cwd_fd);
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	886
14415 666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	887 return -1;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	888 }
20801 b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	889 // Close the directory and reset the current working directory.
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	890 close_directory_secure_cwd(dirp, saved_cwd_fd);
14415 666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	891
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	892 // save the file descriptor
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	893 int fd = result;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	894
20801 b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	895 // Check to see if the file is secure.
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	896 if (!is_file_secure(fd, filename)) {
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	897 ::close(fd);
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	898 return -1;
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	899 }
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	900
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	901 // Truncate the file to get rid of any existing data.
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	902 RESTARTABLE(::ftruncate(fd, (off_t)0), result);
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	903 if (result == OS_ERR) {
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	904 if (PrintMiscellaneous && Verbose) {
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	905 warning("could not truncate shared memory file: %s\n", strerror(errno));
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	906 }
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	907 ::close(fd);
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	908 return -1;
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	909 }
14415 666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	910 // set the file size
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	911 RESTARTABLE(::ftruncate(fd, (off_t)size), result);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	912 if (result == OS_ERR) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	913 if (PrintMiscellaneous && Verbose) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	914 warning("could not set shared memory file size: %s\n", strerror(errno));
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	915 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	916 RESTARTABLE(::close(fd), result);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	917 return -1;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	918 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	919
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	920 return fd;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	921 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	922
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	923 // open the shared memory file for the given user and vmid. returns
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	924 // the file descriptor for the open file or -1 if the file could not
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	925 // be opened.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	926 //
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	927 static int open_sharedmem_file(const char* filename, int oflags, TRAPS) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	928
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	929 // open the file
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	930 int result;
20801 b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	931 // No O_NOFOLLOW defined at buildtime, and it is not documented for open;
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	932 // so provide a workaround in this case
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	933 #ifdef O_NOFOLLOW
14415 666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	934 RESTARTABLE(::open(filename, oflags), result);
20801 b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	935 #else
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	936 RESTARTABLE(::open_o_nofollow(filename, oflags), result);
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	937 #endif
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	938
14415 666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	939 if (result == OS_ERR) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	940 if (errno == ENOENT) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	941 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	942 "Process not found");
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	943 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	944 else if (errno == EACCES) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	945 THROW_MSG_0(vmSymbols::java_lang_IllegalArgumentException(),
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	946 "Permission denied");
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	947 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	948 else {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	949 THROW_MSG_0(vmSymbols::java_io_IOException(), strerror(errno));
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	950 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	951 }
20801 b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	952 int fd = result;
14415 666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	953
20801 b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	954 // Check to see if the file is secure.
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	955 if (!is_file_secure(fd, filename)) {
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	956 ::close(fd);
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	957 return -1;
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	958 }
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	959
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	960 return fd;
14415 666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	961 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	962
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	963 // create a named shared memory region. returns the address of the
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	964 // memory region on success or NULL on failure. A return value of
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	965 // NULL will ultimately disable the shared memory feature.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	966 //
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	967 // On Solaris and Linux, the name space for shared memory objects
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	968 // is the file system name space.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	969 //
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	970 // A monitoring application attaching to a JVM does not need to know
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	971 // the file system name of the shared memory object. However, it may
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	972 // be convenient for applications to discover the existence of newly
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	973 // created and terminating JVMs by watching the file system name space
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	974 // for files being created or removed.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	975 //
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	976 static char* mmap_create_shared(size_t size) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	977
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	978 int result;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	979 int fd;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	980 char* mapAddress;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	981
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	982 int vmid = os::current_process_id();
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	983
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	984 char* user_name = get_user_name(geteuid());
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	985
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	986 if (user_name == NULL)
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	987 return NULL;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	988
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	989 char* dirname = get_user_tmp_dir(user_name);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	990 char* filename = get_sharedmem_filename(dirname, vmid);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	991
20801 b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	992 // Get the short filename.
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	993 char* short_filename = strrchr(filename, '/');
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	994 if (short_filename == NULL) {
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	995 short_filename = filename;
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	996 } else {
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	997 short_filename++;
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	998 }
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	999
14415 666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1000 // cleanup any stale shared memory files
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1001 cleanup_sharedmem_resources(dirname);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1002
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1003 assert(((size > 0) && (size % os::vm_page_size() == 0)),
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1004 "unexpected PerfMemory region size");
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1005
20801 b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	1006 fd = create_sharedmem_resources(dirname, short_filename, size);
14415 666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1007
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1008 FREE_C_HEAP_ARRAY(char, user_name, mtInternal);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1009 FREE_C_HEAP_ARRAY(char, dirname, mtInternal);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1010
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1011 if (fd == -1) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1012 FREE_C_HEAP_ARRAY(char, filename, mtInternal);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1013 return NULL;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1014 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1015
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1016 mapAddress = (char)::mmap((char)0, size, PROT_READ\|PROT_WRITE, MAP_SHARED, fd, 0);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1017
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1018 // attempt to close the file - restart it if it was interrupted,
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1019 // but ignore other failures
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1020 RESTARTABLE(::close(fd), result);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1021 assert(result != OS_ERR, "could not close file");
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1022
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1023 if (mapAddress == MAP_FAILED) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1024 if (PrintMiscellaneous && Verbose) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1025 warning("mmap failed - %s\n", strerror(errno));
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1026 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1027 remove_file(filename);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1028 FREE_C_HEAP_ARRAY(char, filename, mtInternal);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1029 return NULL;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1030 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1031
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1032 // save the file name for use in delete_shared_memory()
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1033 backing_store_file_name = filename;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1034
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1035 // clear the shared memory region
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1036 (void)::memset((void*) mapAddress, 0, size);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1037
20801 b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	1038 // It does not go through os api, the operation has to record from here.
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	1039 MemTracker::record_virtual_memory_reserve((address)mapAddress, size, CURRENT_PC, mtInternal);
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	1040
14415 666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1041 return mapAddress;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1042 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1043
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1044 // release a named shared memory region
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1045 //
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1046 static void unmap_shared(char* addr, size_t bytes) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1047 // Do not rely on os::reserve_memory/os::release_memory to use mmap.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1048 // Use os::reserve_memory/os::release_memory for PerfDisableSharedMem=1, mmap/munmap for PerfDisableSharedMem=0
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1049 if (::munmap(addr, bytes) == -1) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1050 warning("perfmemory: munmap failed (%d)\n", errno);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1051 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1052 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1053
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1054 // create the PerfData memory region in shared memory.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1055 //
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1056 static char* create_shared_memory(size_t size) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1057
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1058 // create the shared memory region.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1059 return mmap_create_shared(size);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1060 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1061
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1062 // delete the shared PerfData memory region
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1063 //
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1064 static void delete_shared_memory(char* addr, size_t size) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1065
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1066 // cleanup the persistent shared memory resources. since DestroyJavaVM does
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1067 // not support unloading of the JVM, unmapping of the memory resource is
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1068 // not performed. The memory will be reclaimed by the OS upon termination of
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1069 // the process. The backing store file is deleted from the file system.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1070
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1071 assert(!PerfDisableSharedMem, "shouldn't be here");
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1072
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1073 if (backing_store_file_name != NULL) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1074 remove_file(backing_store_file_name);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1075 // Don't.. Free heap memory could deadlock os::abort() if it is called
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1076 // from signal handler. OS will reclaim the heap memory.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1077 // FREE_C_HEAP_ARRAY(char, backing_store_file_name, mtInternal);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1078 backing_store_file_name = NULL;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1079 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1080 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1081
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1082 // return the size of the file for the given file descriptor
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1083 // or 0 if it is not a valid size for a shared memory file
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1084 //
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1085 static size_t sharedmem_filesize(int fd, TRAPS) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1086
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1087 struct stat statbuf;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1088 int result;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1089
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1090 RESTARTABLE(::fstat(fd, &statbuf), result);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1091 if (result == OS_ERR) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1092 if (PrintMiscellaneous && Verbose) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1093 warning("fstat failed: %s\n", strerror(errno));
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1094 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1095 THROW_MSG_0(vmSymbols::java_io_IOException(),
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1096 "Could not determine PerfMemory size");
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1097 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1098
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1099 if ((statbuf.st_size == 0) \|\|
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1100 ((size_t)statbuf.st_size % os::vm_page_size() != 0)) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1101 THROW_MSG_0(vmSymbols::java_lang_Exception(),
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1102 "Invalid PerfMemory size");
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1103 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1104
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1105 return (size_t)statbuf.st_size;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1106 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1107
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1108 // attach to a named shared memory region.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1109 //
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1110 static void mmap_attach_shared(const char* user, int vmid, PerfMemory::PerfMemoryMode mode, char** addr, size_t* sizep, TRAPS) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1111
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1112 char* mapAddress;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1113 int result;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1114 int fd;
20801 b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	1115 size_t size = 0;
14415 666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1116 const char* luser = NULL;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1117
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1118 int mmap_prot;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1119 int file_flags;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1120
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1121 ResourceMark rm;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1122
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1123 // map the high level access mode to the appropriate permission
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1124 // constructs for the file and the shared memory mapping.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1125 if (mode == PerfMemory::PERF_MODE_RO) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1126 mmap_prot = PROT_READ;
20801 b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	1127
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	1128 // No O_NOFOLLOW defined at buildtime, and it is not documented for open.
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	1129 #ifdef O_NOFOLLOW
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	1130 file_flags = O_RDONLY \| O_NOFOLLOW;
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	1131 #else
14415 666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1132 file_flags = O_RDONLY;
20801 b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	1133 #endif
14415 666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1134 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1135 else if (mode == PerfMemory::PERF_MODE_RW) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1136 #ifdef LATER
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1137 mmap_prot = PROT_READ \| PROT_WRITE;
20801 b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	1138 file_flags = O_RDWR \| O_NOFOLLOW;
14415 666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1139 #else
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1140 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1141 "Unsupported access mode");
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1142 #endif
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1143 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1144 else {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1145 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1146 "Illegal access mode");
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1147 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1148
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1149 if (user == NULL \|\| strlen(user) == 0) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1150 luser = get_user_name(vmid, CHECK);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1151 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1152 else {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1153 luser = user;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1154 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1155
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1156 if (luser == NULL) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1157 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1158 "Could not map vmid to user Name");
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1159 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1160
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1161 char* dirname = get_user_tmp_dir(luser);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1162
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1163 // since we don't follow symbolic links when creating the backing
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1164 // store file, we don't follow them when attaching either.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1165 //
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1166 if (!is_directory_secure(dirname)) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1167 FREE_C_HEAP_ARRAY(char, dirname, mtInternal);
20801 b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	1168 if (luser != user) {
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	1169 FREE_C_HEAP_ARRAY(char, luser, mtInternal);
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	1170 }
14415 666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1171 THROW_MSG(vmSymbols::java_lang_IllegalArgumentException(),
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1172 "Process not found");
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1173 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1174
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1175 char* filename = get_sharedmem_filename(dirname, vmid);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1176
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1177 // copy heap memory to resource memory. the open_sharedmem_file
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1178 // method below need to use the filename, but could throw an
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1179 // exception. using a resource array prevents the leak that
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1180 // would otherwise occur.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1181 char* rfilename = NEW_RESOURCE_ARRAY(char, strlen(filename) + 1);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1182 strcpy(rfilename, filename);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1183
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1184 // free the c heap resources that are no longer needed
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1185 if (luser != user) FREE_C_HEAP_ARRAY(char, luser, mtInternal);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1186 FREE_C_HEAP_ARRAY(char, dirname, mtInternal);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1187 FREE_C_HEAP_ARRAY(char, filename, mtInternal);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1188
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1189 // open the shared memory file for the give vmid
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1190 fd = open_sharedmem_file(rfilename, file_flags, CHECK);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1191 assert(fd != OS_ERR, "unexpected value");
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1192
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1193 if (*sizep == 0) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1194 size = sharedmem_filesize(fd, CHECK);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1195 assert(size != 0, "unexpected size");
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1196 } else {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1197 size = *sizep;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1198 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1199
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1200 mapAddress = (char)::mmap((char)0, size, mmap_prot, MAP_SHARED, fd, 0);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1201
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1202 // attempt to close the file - restart if it gets interrupted,
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1203 // but ignore other failures
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1204 RESTARTABLE(::close(fd), result);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1205 assert(result != OS_ERR, "could not close file");
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1206
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1207 if (mapAddress == MAP_FAILED) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1208 if (PrintMiscellaneous && Verbose) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1209 warning("mmap failed: %s\n", strerror(errno));
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1210 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1211 THROW_MSG(vmSymbols::java_lang_OutOfMemoryError(),
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1212 "Could not map PerfMemory");
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1213 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1214
20801 b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	1215 // It does not go through os api, the operation has to record from here.
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	1216 MemTracker::record_virtual_memory_reserve((address)mapAddress, size, CURRENT_PC, mtInternal);
b9c06f87e476 8069590: AIX port of "8050807: Better performing performance data handling" goetz parents: 14415 diff changeset	1217
14415 666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1218 *addr = mapAddress;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1219 *sizep = size;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1220
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1221 if (PerfTraceMemOps) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1222 tty->print("mapped " SIZE_FORMAT " bytes for vmid %d at "
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1223 INTPTR_FORMAT "\n", size, vmid, (void*)mapAddress);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1224 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1225 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1226
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1227
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1228
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1229
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1230 // create the PerfData memory region
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1231 //
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1232 // This method creates the memory region used to store performance
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1233 // data for the JVM. The memory may be created in standard or
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1234 // shared memory.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1235 //
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1236 void PerfMemory::create_memory_region(size_t size) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1237
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1238 if (PerfDisableSharedMem) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1239 // do not share the memory for the performance data.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1240 _start = create_standard_memory(size);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1241 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1242 else {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1243 _start = create_shared_memory(size);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1244 if (_start == NULL) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1245
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1246 // creation of the shared memory region failed, attempt
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1247 // to create a contiguous, non-shared memory region instead.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1248 //
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1249 if (PrintMiscellaneous && Verbose) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1250 warning("Reverting to non-shared PerfMemory region.\n");
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1251 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1252 PerfDisableSharedMem = true;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1253 _start = create_standard_memory(size);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1254 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1255 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1256
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1257 if (_start != NULL) _capacity = size;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1258
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1259 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1260
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1261 // delete the PerfData memory region
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1262 //
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1263 // This method deletes the memory region used to store performance
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1264 // data for the JVM. The memory region indicated by the <address, size>
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1265 // tuple will be inaccessible after a call to this method.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1266 //
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1267 void PerfMemory::delete_memory_region() {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1268
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1269 assert((start() != NULL && capacity() > 0), "verify proper state");
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1270
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1271 // If user specifies PerfDataSaveFile, it will save the performance data
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1272 // to the specified file name no matter whether PerfDataSaveToFile is specified
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1273 // or not. In other word, -XX:PerfDataSaveFile=.. overrides flag
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1274 // -XX:+PerfDataSaveToFile.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1275 if (PerfDataSaveToFile \|\| PerfDataSaveFile != NULL) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1276 save_memory_to_file(start(), capacity());
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1277 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1278
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1279 if (PerfDisableSharedMem) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1280 delete_standard_memory(start(), capacity());
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1281 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1282 else {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1283 delete_shared_memory(start(), capacity());
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1284 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1285 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1286
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1287 // attach to the PerfData memory region for another JVM
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1288 //
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1289 // This method returns an <address, size> tuple that points to
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1290 // a memory buffer that is kept reasonably synchronized with
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1291 // the PerfData memory region for the indicated JVM. This
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1292 // buffer may be kept in synchronization via shared memory
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1293 // or some other mechanism that keeps the buffer updated.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1294 //
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1295 // If the JVM chooses not to support the attachability feature,
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1296 // this method should throw an UnsupportedOperation exception.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1297 //
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1298 // This implementation utilizes named shared memory to map
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1299 // the indicated process's PerfData memory region into this JVMs
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1300 // address space.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1301 //
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1302 void PerfMemory::attach(const char* user, int vmid, PerfMemoryMode mode, char** addrp, size_t* sizep, TRAPS) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1303
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1304 if (vmid == 0 \|\| vmid == os::current_process_id()) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1305 *addrp = start();
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1306 *sizep = capacity();
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1307 return;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1308 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1309
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1310 mmap_attach_shared(user, vmid, mode, addrp, sizep, CHECK);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1311 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1312
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1313 // detach from the PerfData memory region of another JVM
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1314 //
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1315 // This method detaches the PerfData memory region of another
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1316 // JVM, specified as an <address, size> tuple of a buffer
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1317 // in this process's address space. This method may perform
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1318 // arbitrary actions to accomplish the detachment. The memory
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1319 // region specified by <address, size> will be inaccessible after
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1320 // a call to this method.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1321 //
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1322 // If the JVM chooses not to support the attachability feature,
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1323 // this method should throw an UnsupportedOperation exception.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1324 //
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1325 // This implementation utilizes named shared memory to detach
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1326 // the indicated process's PerfData memory region from this
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1327 // process's address space.
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1328 //
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1329 void PerfMemory::detach(char* addr, size_t bytes, TRAPS) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1330
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1331 assert(addr != 0, "address sanity check");
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1332 assert(bytes > 0, "capacity sanity check");
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1333
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1334 if (PerfMemory::contains(addr) \|\| PerfMemory::contains(addr + bytes - 1)) {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1335 // prevent accidental detachment of this process's PerfMemory region
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1336 return;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1337 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1338
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1339 unmap_shared(addr, bytes);
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1340 }
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1341
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1342 char* PerfMemory::backing_store_filename() {
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1343 return backing_store_file_name;
666e6ce3976c 8023038: PPC64 (part 15): Platform files for AIX/PPC64 support simonis parents: diff changeset	1344 }

Mercurial > hg > truffle

annotate src/os/aix/vm/perfMemory_aix.cpp @ 21947:9f70fc90169d