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author | Dmitry Vyukov <dvyukov@google.com> | 2014-12-22 09:44:56 +0000 |
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committer | Dmitry Vyukov <dvyukov@google.com> | 2014-12-22 09:44:56 +0000 |
commit | 45fc7bba7222c687264c1492dedeefc0383744d7 (patch) | |
tree | 97fc837a5f9825db774cda164d3c24701c847cce /test/tsan | |
parent | d5ae33b4e49cf34cd8fff8e0932e0a82259ab94c (diff) | |
download | compiler-rt-45fc7bba7222c687264c1492dedeefc0383744d7.tar.gz |
tsan: add acquire/release functions to java interface
they are required to handle synchronization on volatile/final fields
git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@224697 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/tsan')
-rw-r--r-- | test/tsan/java.h | 3 | ||||
-rw-r--r-- | test/tsan/java_volatile.cc | 42 |
2 files changed, 45 insertions, 0 deletions
diff --git a/test/tsan/java.h b/test/tsan/java.h index d986d08be..66f46239a 100644 --- a/test/tsan/java.h +++ b/test/tsan/java.h @@ -18,4 +18,7 @@ void __tsan_java_mutex_read_lock(jptr addr); void __tsan_java_mutex_read_unlock(jptr addr); void __tsan_java_mutex_lock_rec(jptr addr, int rec); int __tsan_java_mutex_unlock_rec(jptr addr); +int __tsan_java_acquire(jptr addr); +int __tsan_java_release(jptr addr); +int __tsan_java_release_store(jptr addr); } diff --git a/test/tsan/java_volatile.cc b/test/tsan/java_volatile.cc new file mode 100644 index 000000000..56f4c2dd4 --- /dev/null +++ b/test/tsan/java_volatile.cc @@ -0,0 +1,42 @@ +// RUN: %clangxx_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s +#include "java.h" +#include <unistd.h> + +jptr varaddr; +jptr lockaddr; + +void *Thread(void *p) { + while (__atomic_load_n((int*)lockaddr, __ATOMIC_RELAXED) == 0) + usleep(1000); + __tsan_java_acquire(lockaddr); + *(int*)varaddr = 42; + return 0; +} + +int main() { + int const kHeapSize = 1024 * 1024; + jptr jheap = (jptr)malloc(kHeapSize + 8) + 8; + __tsan_java_init(jheap, kHeapSize); + const int kBlockSize = 16; + __tsan_java_alloc(jheap, kBlockSize); + varaddr = jheap; + lockaddr = jheap + 8; + pthread_t th; + pthread_create(&th, 0, Thread, 0); + *(int*)varaddr = 43; + __tsan_java_release(lockaddr); + __atomic_store_n((int*)lockaddr, 1, __ATOMIC_RELAXED); + pthread_join(th, 0); + *(int*)lockaddr = 0; + pthread_create(&th, 0, Thread, 0); + *(int*)varaddr = 43; + __tsan_java_release_store(lockaddr); + __atomic_store_n((int*)lockaddr, 1, __ATOMIC_RELAXED); + pthread_join(th, 0); + __tsan_java_free(jheap, kBlockSize); + fprintf(stderr, "DONE\n"); + return __tsan_java_fini(); +} + +// CHECK-NOT: WARNING: ThreadSanitizer: data race +// CHECK: DONE |