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Refactor android fallback procmaps init. NFC. 

llvm-svn: 314518
This commit is contained in:
Francis Ricci 2017-09-29 15:06:47 +00:00
parent 0e16a59e83
commit 5207630d7e
1 changed files with 19 additions and 10 deletions
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29
compiler-rt/lib/sanitizer_common/sanitizer_linux_libcdep.cc
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@ -462,21 +462,30 @@ extern "C" __attribute__((weak)) int dl_iterate_phdr(
int (*)(struct dl_phdr_info *, size_t, void *), void *);
#endif
void ListOfModules::init() {
clear();
static bool requiresProcmaps() {
#if SANITIZER_ANDROID && __ANDROID_API__ <= 22
u32 api_level = AndroidGetApiLevel();
// Fall back to /proc/maps if dl_iterate_phdr is unavailable or broken.
// The runtime check allows the same library to work with
// both K and L (and future) Android releases.
if (api_level <= ANDROID_LOLLIPOP_MR1) { // L or earlier
MemoryMappingLayout memory_mapping(false);
memory_mapping.DumpListOfModules(&modules_);
return;
}
return AndroidGetApiLevel() <= ANDROID_LOLLIPOP_MR1;
#else
return false;
#endif
DlIteratePhdrData data = {&modules_, true};
dl_iterate_phdr(dl_iterate_phdr_cb, &data);
}
static void procmapsInit(InternalMmapVector<LoadedModule> *modules) {
MemoryMappingLayout memory_mapping(false);
memory_mapping.DumpListOfModules(modules);
}
void ListOfModules::init() {
clear();
if (requiresProcmaps()) {
procmapsInit(&modules_);
} else {
DlIteratePhdrData data = {&modules_, true};
dl_iterate_phdr(dl_iterate_phdr_cb, &data);
}
}
// getrusage does not give us the current RSS, only the max RSS.