Mercurial > hg > truffle
annotate agent/src/os/linux/libproc.h @ 3237:399aa66d375e
Fixed a bug in which the valueEquals method was misused. The method does only check the equality of the node data and not full GVN equality by taking inputs and successors into account.
| author | Thomas Wuerthinger <thomas@wuerthinger.net> |
|---|---|
| date | Wed, 27 Jul 2011 14:16:38 -0700 |
| parents | c18cbe5936b8 |
| children | a9fed06c01d2 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 2003, 2007, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 25 #ifndef _LIBPROC_H_ | |
| 26 #define _LIBPROC_H_ | |
| 27 | |
| 28 #include <unistd.h> | |
| 29 #include <stdint.h> | |
| 30 #include "proc_service.h" | |
| 31 | |
| 32 #if defined(sparc) || defined(sparcv9) | |
| 33 /* | |
| 34 If _LP64 is defined ptrace.h should be taken from /usr/include/asm-sparc64 | |
| 35 otherwise it should be from /usr/include/asm-sparc | |
| 36 These two files define pt_regs structure differently | |
| 37 */ | |
| 38 #ifdef _LP64 | |
| 39 #include "asm-sparc64/ptrace.h" | |
| 40 #else | |
| 41 #include "asm-sparc/ptrace.h" | |
| 42 #endif | |
| 43 | |
| 44 #endif //sparc or sparcv9 | |
| 45 | |
| 46 /************************************************************************************ | |
| 47 | |
| 48 0. This is very minimal subset of Solaris libproc just enough for current application. | |
| 49 Please note that the bulk of the functionality is from proc_service interface. This | |
| 50 adds Pgrab__ and some missing stuff. We hide the difference b/w live process and core | |
| 51 file by this interface. | |
| 52 | |
| 53 1. pthread_id unique in both NPTL & LinuxThreads. We store this in | |
| 54 OSThread::_pthread_id in JVM code. | |
| 55 | |
| 56 2. All threads see the same pid when they call getpid() under NPTL. | |
| 57 Threads receive different pid under LinuxThreads. We used to save the result of | |
| 58 ::getpid() call in OSThread::_thread_id. This way uniqueness of OSThread::_thread_id | |
| 59 was lost under NPTL. Now, we store the result of ::gettid() call in | |
| 60 OSThread::_thread_id. Because gettid returns actual pid of thread (lwp id), this is | |
| 61 unique again. We therefore use OSThread::_thread_id as unique identifier. | |
| 62 | |
| 63 3. There is a unique LWP id under both thread libraries. libthread_db maps pthread_id | |
| 64 to its underlying lwp_id under both the thread libraries. thread_info.lwp_id stores | |
| 65 lwp_id of the thread. The lwp id is nothing but the actual pid of clone'd processes. But | |
| 66 unfortunately libthread_db does not work very well for core dumps. So, we get pthread_id | |
| 67 only for processes. For core dumps, we don't use libthread_db at all (like gdb). | |
| 68 | |
| 69 4. ptrace operates on this LWP id under both the thread libraries. When we say 'pid' for | |
| 70 ptrace call, we refer to lwp_id of the thread. | |
| 71 | |
| 72 5. for core file, we parse ELF files and read data from them. For processes we use | |
| 73 combination of ptrace and /proc calls. | |
| 74 | |
| 75 *************************************************************************************/ | |
| 76 | |
| 77 #ifdef ia64 | |
| 78 struct user_regs_struct { | |
| 79 /* copied from user.h which doesn't define this in a struct */ | |
| 80 | |
| 81 #define IA64_REG_COUNT (EF_SIZE/8+32) /* integer and fp regs */ | |
| 82 unsigned long regs[IA64_REG_COUNT]; /* integer and fp regs */ | |
| 83 }; | |
| 84 #endif | |
| 85 | |
| 86 #if defined(sparc) || defined(sparcv9) | |
| 87 #define user_regs_struct pt_regs | |
| 88 #endif | |
| 89 | |
| 90 // This C bool type must be int for compatibility with Linux calls and | |
| 91 // it would be a mistake to equivalence it to C++ bool on many platforms | |
| 92 | |
| 93 typedef int bool; | |
| 94 #define true 1 | |
| 95 #define false 0 | |
| 96 | |
| 97 struct ps_prochandle; | |
| 98 | |
| 99 // attach to a process | |
| 100 struct ps_prochandle* Pgrab(pid_t pid); | |
| 101 | |
| 102 // attach to a core dump | |
| 103 struct ps_prochandle* Pgrab_core(const char* execfile, const char* corefile); | |
| 104 | |
| 105 // release a process or core | |
| 106 void Prelease(struct ps_prochandle* ph); | |
| 107 | |
| 108 // functions not directly available in Solaris libproc | |
| 109 | |
| 110 // initialize libproc (call this only once per app) | |
| 111 // pass true to make library verbose | |
| 112 bool init_libproc(bool verbose); | |
| 113 | |
| 114 // get number of threads | |
| 115 int get_num_threads(struct ps_prochandle* ph); | |
| 116 | |
| 117 // get lwp_id of n'th thread | |
| 118 lwpid_t get_lwp_id(struct ps_prochandle* ph, int index); | |
| 119 | |
| 120 // get regs for a given lwp | |
| 121 bool get_lwp_regs(struct ps_prochandle* ph, lwpid_t lid, struct user_regs_struct* regs); | |
| 122 | |
| 123 // get number of shared objects | |
| 124 int get_num_libs(struct ps_prochandle* ph); | |
| 125 | |
| 126 // get name of n'th lib | |
| 127 const char* get_lib_name(struct ps_prochandle* ph, int index); | |
| 128 | |
| 129 // get base of lib | |
| 130 uintptr_t get_lib_base(struct ps_prochandle* ph, int index); | |
| 131 | |
| 132 // returns true if given library is found in lib list | |
| 133 bool find_lib(struct ps_prochandle* ph, const char *lib_name); | |
| 134 | |
| 135 // symbol lookup | |
| 136 uintptr_t lookup_symbol(struct ps_prochandle* ph, const char* object_name, | |
| 137 const char* sym_name); | |
| 138 | |
| 139 // address->nearest symbol lookup. return NULL for no symbol | |
| 140 const char* symbol_for_pc(struct ps_prochandle* ph, uintptr_t addr, uintptr_t* poffset); | |
| 141 | |
| 142 #endif //__LIBPROC_H_ |