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comparison: tools/profiler/shared-libraries-linux.cc
tools/profiler/shared-libraries-linux.cc
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
equal
deleted
inserted
replaced
| -1:000000000000 | 0:7d5b3f1a2ded |
|---|---|
| 1 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 2 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 3 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 4 | |
| 5 #include "shared-libraries.h" | |
| 6 | |
| 7 #define PATH_MAX_TOSTRING(x) #x | |
| 8 #define PATH_MAX_STRING(x) PATH_MAX_TOSTRING(x) | |
| 9 #include <stdlib.h> | |
| 10 #include <stdio.h> | |
| 11 #include <string.h> | |
| 12 #include <limits.h> | |
| 13 #include <unistd.h> | |
| 14 #include <fstream> | |
| 15 #include "platform.h" | |
| 16 #include "shared-libraries.h" | |
| 17 | |
| 18 #if !defined(MOZ_WIDGET_GONK) | |
| 19 // TODO fix me with proper include | |
| 20 #include "nsDebug.h" | |
| 21 #ifdef ANDROID | |
| 22 #include "ElfLoader.h" // dl_phdr_info | |
| 23 #else | |
| 24 #include <link.h> // dl_phdr_info | |
| 25 #endif | |
| 26 #include <features.h> | |
| 27 #include <dlfcn.h> | |
| 28 #include <sys/types.h> | |
| 29 | |
| 30 #ifdef ANDROID | |
| 31 extern "C" __attribute__((weak)) | |
| 32 int dl_iterate_phdr( | |
| 33 int (*callback) (struct dl_phdr_info *info, | |
| 34 size_t size, void *data), | |
| 35 void *data); | |
| 36 #endif | |
| 37 | |
| 38 int dl_iterate_callback(struct dl_phdr_info *dl_info, size_t size, void *data) | |
| 39 { | |
| 40 SharedLibraryInfo& info = *reinterpret_cast<SharedLibraryInfo*>(data); | |
| 41 | |
| 42 if (dl_info->dlpi_phnum <= 0) | |
| 43 return 0; | |
| 44 | |
| 45 unsigned long libStart = -1; | |
| 46 unsigned long libEnd = 0; | |
| 47 | |
| 48 for (size_t i = 0; i < dl_info->dlpi_phnum; i++) { | |
| 49 if (dl_info->dlpi_phdr[i].p_type != PT_LOAD) { | |
| 50 continue; | |
| 51 } | |
| 52 unsigned long start = dl_info->dlpi_addr + dl_info->dlpi_phdr[i].p_vaddr; | |
| 53 unsigned long end = start + dl_info->dlpi_phdr[i].p_memsz; | |
| 54 if (start < libStart) | |
| 55 libStart = start; | |
| 56 if (end > libEnd) | |
| 57 libEnd = end; | |
| 58 } | |
| 59 SharedLibrary shlib(libStart, libEnd, 0, "", dl_info->dlpi_name); | |
| 60 info.AddSharedLibrary(shlib); | |
| 61 | |
| 62 return 0; | |
| 63 } | |
| 64 #endif | |
| 65 | |
| 66 SharedLibraryInfo SharedLibraryInfo::GetInfoForSelf() | |
| 67 { | |
| 68 SharedLibraryInfo info; | |
| 69 | |
| 70 #if !defined(MOZ_WIDGET_GONK) | |
| 71 dl_iterate_phdr(dl_iterate_callback, &info); | |
| 72 #ifndef ANDROID | |
| 73 return info; | |
| 74 #endif | |
| 75 #endif | |
| 76 | |
| 77 pid_t pid = getpid(); | |
| 78 char path[PATH_MAX]; | |
| 79 snprintf(path, PATH_MAX, "/proc/%d/maps", pid); | |
| 80 std::ifstream maps(path); | |
| 81 std::string line; | |
| 82 int count = 0; | |
| 83 while (std::getline(maps, line)) { | |
| 84 int ret; | |
| 85 //XXX: needs input sanitizing | |
| 86 unsigned long start; | |
| 87 unsigned long end; | |
| 88 char perm[6] = ""; | |
| 89 unsigned long offset; | |
| 90 char name[PATH_MAX] = ""; | |
| 91 ret = sscanf(line.c_str(), | |
| 92 "%lx-%lx %6s %lx %*s %*x %" PATH_MAX_STRING(PATH_MAX) "s\n", | |
| 93 &start, &end, perm, &offset, name); | |
| 94 if (!strchr(perm, 'x')) { | |
| 95 // Ignore non executable entries | |
| 96 continue; | |
| 97 } | |
| 98 if (ret != 5 && ret != 4) { | |
| 99 LOG("Get maps line failed"); | |
| 100 continue; | |
| 101 } | |
| 102 #if defined(ANDROID) && !defined(MOZ_WIDGET_GONK) | |
| 103 // Use proc/pid/maps to get the dalvik-jit section since it has | |
| 104 // no associated phdrs | |
| 105 if (strcmp(name, "/dev/ashmem/dalvik-jit-code-cache") != 0) | |
| 106 continue; | |
| 107 #else | |
| 108 if (strcmp(perm, "r-xp") != 0) { | |
| 109 // Ignore entries that are writable and/or shared. | |
| 110 // At least one graphics driver uses short-lived "rwxs" mappings | |
| 111 // (see bug 926734 comment 5), so just checking for 'x' isn't enough. | |
| 112 continue; | |
| 113 } | |
| 114 #endif | |
| 115 SharedLibrary shlib(start, end, offset, "", name); | |
| 116 info.AddSharedLibrary(shlib); | |
| 117 if (count > 10000) { | |
| 118 LOG("Get maps failed"); | |
| 119 break; | |
| 120 } | |
| 121 count++; | |
| 122 } | |
| 123 return info; | |
| 124 } |
