Mercurial > hg > truffle
view src/os/linux/vm/hpi_linux.cpp @ 2013:ec8c74742417
7005241: C1: SEGV in java.util.concurrent.LinkedTransferQueue.xfer() with compressed oops
Summary: Implementation of the CAS primitive for x64 compressed oops was incorrect. It kills rscratch2 register (r11), which is allocatable in C1. Also, we don't need to restore cmpval as it's never used after that, so we need only one temporary register, which can be scratch1.
Reviewed-by: kvn, never
author | iveresov |
---|---|
date | Wed, 08 Dec 2010 02:36:36 -0800 |
parents | f95d63e2154a |
children |
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/* * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. * */ #include "precompiled.hpp" #include "oops/oop.inline.hpp" #include "runtime/hpi.hpp" #include "runtime/os.hpp" # include <sys/param.h> # include <dlfcn.h> typedef jint (JNICALL *init_t)(GetInterfaceFunc *, void *); void hpi::initialize_get_interface(vm_calls_t *callbacks) { char buf[JVM_MAXPATHLEN]; void *hpi_handle; GetInterfaceFunc& getintf = _get_interface; jint (JNICALL * DLL_Initialize)(GetInterfaceFunc *, void *); if (HPILibPath && HPILibPath[0]) { strncpy(buf, HPILibPath, JVM_MAXPATHLEN - 1); buf[JVM_MAXPATHLEN - 1] = '\0'; } else { const char *thread_type = "native_threads"; os::jvm_path(buf, JVM_MAXPATHLEN); #ifdef PRODUCT const char * hpi_lib = "/libhpi.so"; #else char * ptr = strrchr(buf, '/'); assert(strstr(ptr, "/libjvm") == ptr, "invalid library name"); const char * hpi_lib = strstr(ptr, "_g") ? "/libhpi_g.so" : "/libhpi.so"; #endif *(strrchr(buf, '/')) = '\0'; /* get rid of /libjvm.so */ char* p = strrchr(buf, '/'); if (p != NULL) p[1] = '\0'; /* get rid of hotspot */ strcat(buf, thread_type); strcat(buf, hpi_lib); } if (TraceHPI) tty->print_cr("Loading HPI %s ", buf); #ifdef SPARC // On 64-bit Ubuntu Sparc RTLD_NOW leads to unresolved deps in libpthread.so # define OPEN_MODE RTLD_LAZY #else // We use RTLD_NOW because of bug 4032715 # define OPEN_MODE RTLD_NOW #endif hpi_handle = dlopen(buf, OPEN_MODE); #undef OPEN_MODE if (hpi_handle == NULL) { if (TraceHPI) tty->print_cr("HPI dlopen failed: %s", dlerror()); return; } DLL_Initialize = CAST_TO_FN_PTR(jint (JNICALL *)(GetInterfaceFunc *, void *), dlsym(hpi_handle, "DLL_Initialize")); if (TraceHPI && DLL_Initialize == NULL) tty->print_cr("HPI dlsym of DLL_Initialize failed: %s", dlerror()); if (DLL_Initialize == NULL || (*DLL_Initialize)(&getintf, callbacks) < 0) { if (TraceHPI) tty->print_cr("HPI DLL_Initialize failed"); return; } if (TraceHPI) tty->print_cr("HPI loaded successfully"); }