compiler-rt/test/tsan/java_symbolization_legacy.cpp

   1 // RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s
   2 #include "java.h"
   3 #include <memory.h>
   4
   5 #if (__APPLE__)
   6 __attribute__((weak)) // Required for dyld macOS 12.0+
   7 #endif
   8 __attribute__((disable_sanitizer_instrumentation))
   9 extern "C" bool
  10 __tsan_symbolize_external(jptr pc, char *func_buf, jptr func_siz,
  11                           char *file_buf, jptr file_siz, int *line, int *col) {
  12   if (pc == (1234 | kExternalPCBit)) {
  13     memcpy(func_buf, "MyFunc", sizeof("MyFunc"));
  14     memcpy(file_buf, "MyFile.java", sizeof("MyFile.java"));
  15     *line = 1234;
  16     *col = 56;
  17     return true;
  18   }
  19   return false;
  20 }
  21
  22 void *Thread(void *p) {
  23   barrier_wait(&barrier);
  24   __tsan_write1_pc((jptr)p, 1234 | kExternalPCBit);
  25   return 0;
  26 }
  27
  28 int main() {
  29   barrier_init(&barrier, 2);
  30   int const kHeapSize = 1024 * 1024;
  31   jptr jheap = (jptr)malloc(kHeapSize + 8) + 8;
  32   __tsan_java_init(jheap, kHeapSize);
  33   const int kBlockSize = 16;
  34   __tsan_java_alloc(jheap, kBlockSize);
  35   pthread_t th;
  36   pthread_create(&th, 0, Thread, (void*)jheap);
  37   __tsan_write1_pc((jptr)jheap, 1234 | kExternalPCBit);
  38   barrier_wait(&barrier);
  39   pthread_join(th, 0);
  40   __tsan_java_free(jheap, kBlockSize);
  41   fprintf(stderr, "DONE\n");
  42   return __tsan_java_fini();
  43 }
  44
  45 // CHECK: WARNING: ThreadSanitizer: data race
  46 // CHECK:     #0 MyFunc MyFile.java:1234:56
  47 // CHECK: DONE