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Workaround the self-cleaning TSD on Android. 

llvm-svn: 148475
This commit is contained in:
Evgeniy Stepanov 2012-01-19 13:37:31 +00:00
parent 62b0d70e56
commit d296ad4e16
1 changed files with 15 additions and 1 deletions
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16
compiler-rt/lib/asan/asan_thread_registry.cc
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@ -65,7 +65,21 @@ AsanThread *AsanThreadRegistry::GetMain() {
AsanThread *AsanThreadRegistry::GetCurrent() {
AsanThreadSummary *summary = (AsanThreadSummary *)AsanTSDGet();
if (!summary) return 0;
if (!summary) {
#ifdef ANDROID
// On Android, libc constructor is called _after_ asan_init, and cleans up
// TSD. Try to figure out if this is still the main thread by the stack
// address. We are not entirely sure that we have correct main thread
// limits, so only do this magic on Android, and only if the found thread is
// the main thread.
AsanThread* thread = FindThreadByStackAddress((uintptr_t)&summary);
if (thread->tid() == 0) {
SetCurrent(thread);
return thread;
}
#endif
return 0;
}
return summary->thread();
}