src/compiler-rt/test/tsan/java_alloc.cc

   1 // RUN: %clangxx_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s
   2 #include "java.h"
   3
   4 int const kHeapSize = 1024 * 1024;
   5
   6 void stress(jptr addr) {
   7   for (jptr sz = 8; sz <= 32; sz <<= 1) {
   8     for (jptr i = 0; i < kHeapSize / 4 / sz; i++) {
   9       __tsan_java_alloc(addr + i * sz, sz);
  10     }
  11     __tsan_java_move(addr, addr + kHeapSize / 2, kHeapSize / 4);
  12     __tsan_java_free(addr + kHeapSize / 2, kHeapSize / 4);
  13   }
  14 }
  15
  16 void *Thread(void *p) {
  17   stress((jptr)p);
  18   return 0;
  19 }
  20
  21 int main() {
  22   jptr jheap = (jptr)malloc(kHeapSize);
  23   __tsan_java_init(jheap, kHeapSize);
  24   pthread_t th;
  25   pthread_create(&th, 0, Thread, (void*)(jheap + kHeapSize / 4));
  26   stress(jheap);
  27   pthread_join(th, 0);
  28   printf("OK\n");
  29   return __tsan_java_fini();
  30 }
  31
  32 // CHECK-NOT: WARNING: ThreadSanitizer: data race