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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /tools/profiler/core/shared-libraries-linux.cc
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
Diffstat (limited to 'tools/profiler/core/shared-libraries-linux.cc')
-rw-r--r--tools/profiler/core/shared-libraries-linux.cc159
1 files changed, 159 insertions, 0 deletions
diff --git a/tools/profiler/core/shared-libraries-linux.cc b/tools/profiler/core/shared-libraries-linux.cc
new file mode 100644
index 000000000..24437fb4e
--- /dev/null
+++ b/tools/profiler/core/shared-libraries-linux.cc
@@ -0,0 +1,159 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "shared-libraries.h"
+
+#define PATH_MAX_TOSTRING(x) #x
+#define PATH_MAX_STRING(x) PATH_MAX_TOSTRING(x)
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <limits.h>
+#include <unistd.h>
+#include <fstream>
+#include "platform.h"
+#include "shared-libraries.h"
+
+#include "common/linux/file_id.h"
+#include <algorithm>
+
+#define ARRAY_SIZE(a) (sizeof(a)/sizeof(a[0]))
+
+// Get the breakpad Id for the binary file pointed by bin_name
+static std::string getId(const char *bin_name)
+{
+ using namespace google_breakpad;
+ using namespace std;
+
+ PageAllocator allocator;
+ auto_wasteful_vector<uint8_t, sizeof(MDGUID)> identifier(&allocator);
+
+ FileID file_id(bin_name);
+ if (file_id.ElfFileIdentifier(identifier)) {
+ return FileID::ConvertIdentifierToUUIDString(identifier) + "0";
+ }
+
+ return "";
+}
+
+#if !defined(MOZ_WIDGET_GONK)
+// TODO fix me with proper include
+#include "nsDebug.h"
+#ifdef ANDROID
+#include "ElfLoader.h" // dl_phdr_info
+#else
+#include <link.h> // dl_phdr_info
+#endif
+#include <features.h>
+#include <dlfcn.h>
+#include <sys/types.h>
+
+#ifdef ANDROID
+extern "C" MOZ_EXPORT __attribute__((weak))
+int dl_iterate_phdr(
+ int (*callback) (struct dl_phdr_info *info,
+ size_t size, void *data),
+ void *data);
+#endif
+
+static int
+dl_iterate_callback(struct dl_phdr_info *dl_info, size_t size, void *data)
+{
+ SharedLibraryInfo& info = *reinterpret_cast<SharedLibraryInfo*>(data);
+
+ if (dl_info->dlpi_phnum <= 0)
+ return 0;
+
+ unsigned long libStart = -1;
+ unsigned long libEnd = 0;
+
+ for (size_t i = 0; i < dl_info->dlpi_phnum; i++) {
+ if (dl_info->dlpi_phdr[i].p_type != PT_LOAD) {
+ continue;
+ }
+ unsigned long start = dl_info->dlpi_addr + dl_info->dlpi_phdr[i].p_vaddr;
+ unsigned long end = start + dl_info->dlpi_phdr[i].p_memsz;
+ if (start < libStart)
+ libStart = start;
+ if (end > libEnd)
+ libEnd = end;
+ }
+ const char *name = dl_info->dlpi_name;
+ SharedLibrary shlib(libStart, libEnd, 0, getId(name), name);
+ info.AddSharedLibrary(shlib);
+
+ return 0;
+}
+
+#endif // !MOZ_WIDGET_GONK
+
+SharedLibraryInfo SharedLibraryInfo::GetInfoForSelf()
+{
+ SharedLibraryInfo info;
+
+#if !defined(MOZ_WIDGET_GONK)
+#ifdef ANDROID
+ if (!dl_iterate_phdr) {
+ // On ARM Android, dl_iterate_phdr is provided by the custom linker.
+ // So if libxul was loaded by the system linker (e.g. as part of
+ // xpcshell when running tests), it won't be available and we should
+ // not call it.
+ return info;
+ }
+#endif // ANDROID
+
+ dl_iterate_phdr(dl_iterate_callback, &info);
+#endif // !MOZ_WIDGET_GONK
+
+#if defined(ANDROID) || defined(MOZ_WIDGET_GONK)
+ pid_t pid = getpid();
+ char path[PATH_MAX];
+ snprintf(path, PATH_MAX, "/proc/%d/maps", pid);
+ std::ifstream maps(path);
+ std::string line;
+ int count = 0;
+ while (std::getline(maps, line)) {
+ int ret;
+ //XXX: needs input sanitizing
+ unsigned long start;
+ unsigned long end;
+ char perm[6] = "";
+ unsigned long offset;
+ char name[PATH_MAX] = "";
+ ret = sscanf(line.c_str(),
+ "%lx-%lx %6s %lx %*s %*x %" PATH_MAX_STRING(PATH_MAX) "s\n",
+ &start, &end, perm, &offset, name);
+ if (!strchr(perm, 'x')) {
+ // Ignore non executable entries
+ continue;
+ }
+ if (ret != 5 && ret != 4) {
+ LOG("Get maps line failed");
+ continue;
+ }
+#if defined(ANDROID) && !defined(MOZ_WIDGET_GONK)
+ // Use proc/pid/maps to get the dalvik-jit section since it has
+ // no associated phdrs
+ if (strcmp(name, "/dev/ashmem/dalvik-jit-code-cache") != 0)
+ continue;
+#else
+ if (strcmp(perm, "r-xp") != 0) {
+ // Ignore entries that are writable and/or shared.
+ // At least one graphics driver uses short-lived "rwxs" mappings
+ // (see bug 926734 comment 5), so just checking for 'x' isn't enough.
+ continue;
+ }
+#endif
+ SharedLibrary shlib(start, end, offset, getId(name), name);
+ info.AddSharedLibrary(shlib);
+ if (count > 10000) {
+ LOG("Get maps failed");
+ break;
+ }
+ count++;
+ }
+#endif // ANDROID || MOZ_WIDGET_GONK
+
+ return info;
+}