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tsan: Implement pthread_exit() interceptor for Thread sanitizer 

This change is preparation for fiber support.

Author: yuri (Yuri Per)
Reviewed in: https://reviews.llvm.org/D57876
Context: https://reviews.llvm.org/D54889

llvm-svn: 353385
This commit is contained in:
Dmitry Vyukov 2019-02-07 10:46:02 +00:00
parent 66b18e5755
commit 17132b62e0
2 changed files with 31 additions and 0 deletions
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6
compiler-rt/lib/tsan/rtl/tsan_interceptors.cc
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@ -1050,6 +1050,11 @@ TSAN_INTERCEPTOR(int, pthread_detach, void *th) {
return res;
}
TSAN_INTERCEPTOR(void, pthread_exit, void *retval) {
SCOPED_TSAN_INTERCEPTOR(pthread_exit, retval);
REAL(pthread_exit)(retval);
}
#if SANITIZER_LINUX
TSAN_INTERCEPTOR(int, pthread_tryjoin_np, void *th, void **ret) {
SCOPED_TSAN_INTERCEPTOR(pthread_tryjoin_np, th, ret);
@ -2664,6 +2669,7 @@ void InitializeInterceptors() {
TSAN_INTERCEPT(pthread_create);
TSAN_INTERCEPT(pthread_join);
TSAN_INTERCEPT(pthread_detach);
TSAN_INTERCEPT(pthread_exit);
#if SANITIZER_LINUX
TSAN_INTERCEPT(pthread_tryjoin_np);
TSAN_INTERCEPT(pthread_timedjoin_np);

25
compiler-rt/test/tsan/thread_exit.c Normal file
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@ -0,0 +1,25 @@
// RUN: %clang_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s
#include "test.h"
int var;
void *Thread(void *x) {
pthread_exit(&var);
return 0;
}
int main() {
pthread_t t;
pthread_create(&t, 0, Thread, 0);
void *retval = 0;
pthread_join(t, &retval);
if (retval != &var) {
fprintf(stderr, "Unexpected return value\n");
exit(1);
}
fprintf(stderr, "PASS\n");
return 0;
}
// CHECK-NOT: WARNING: ThreadSanitizer:
// CHECK: PASS