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