compiler-rt/test/tsan/java_symbolization.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" void
  10 __tsan_symbolize_external_ex(jptr pc,
  11                              void (*add_frame)(void *, const char *,
  12                                                const char *, int, int),
  13                              void *ctx) {
  14   if (pc == (1234 | kExternalPCBit)) {
  15     add_frame(ctx, "MyInnerFunc", "MyInnerFile.java", 1234, 56);
  16     add_frame(ctx, "MyOuterFunc", "MyOuterFile.java", 4321, 65);
  17   }
  18   if (pc == (2345 | kExternalPCBit)) {
  19     add_frame(ctx, "Caller1", "CallerFile.java", 111, 22);
  20     add_frame(ctx, "Caller2", "CallerFile.java", 333, 44);
  21   }
  22   if (pc == (3456 | kExternalPCBit)) {
  23     add_frame(ctx, "Allocer1", "Alloc.java", 11, 222);
  24     add_frame(ctx, "Allocer2", "Alloc.java", 33, 444);
  25   }
  26 }
  27
  28 void *Thread(void *p) {
  29   barrier_wait(&barrier);
  30   __tsan_func_entry(2345 | kExternalPCBit);
  31   __tsan_write1_pc((jptr)p + 16, 1234 | kExternalPCBit);
  32   __tsan_func_exit();
  33   return 0;
  34 }
  35
  36 jptr const kHeapSize = 64 * 1024;
  37 jptr java_heap[kHeapSize];
  38
  39 int main() {
  40   barrier_init(&barrier, 2);
  41   jptr jheap = (jptr)java_heap;
  42   __tsan_java_init(jheap, kHeapSize);
  43   const int kBlockSize = 32;
  44   __tsan_func_entry(3456 | kExternalPCBit);
  45   __tsan_java_alloc(jheap, kBlockSize);
  46   print_address("addr:", 2, jheap, jheap + 16);
  47   __tsan_func_exit();
  48   pthread_t th;
  49   pthread_create(&th, 0, Thread, (void*)jheap);
  50   __tsan_func_entry(2345 | kExternalPCBit);
  51   __tsan_write1_pc(jheap + 16, 1234 | kExternalPCBit);
  52   __tsan_func_exit();
  53   barrier_wait(&barrier);
  54   pthread_join(th, 0);
  55   __tsan_java_free(jheap, kBlockSize);
  56   fprintf(stderr, "DONE\n");
  57   return __tsan_java_fini();
  58 }
  59
  60 // CHECK: addr:[[BLOCK:0x[0-9,a-f]+]] [[ADDR:0x[0-9,a-f]+]]
  61 // CHECK: WARNING: ThreadSanitizer: data race
  62 // CHECK:   Write of size 1 at [[ADDR]] by thread T1:
  63 // CHECK:     #0 MyInnerFunc MyInnerFile.java:1234:56
  64 // CHECK:     #1 MyOuterFunc MyOuterFile.java:4321:65
  65 // CHECK:     #2 Caller1 CallerFile.java:111:22
  66 // CHECK:     #3 Caller2 CallerFile.java:333:44
  67 // CHECK:   Previous write of size 1 at [[ADDR]] by main thread:
  68 // CHECK:     #0 MyInnerFunc MyInnerFile.java:1234:56
  69 // CHECK:     #1 MyOuterFunc MyOuterFile.java:4321:65
  70 // CHECK:     #2 Caller1 CallerFile.java:111:22
  71 // CHECK:     #3 Caller2 CallerFile.java:333:44
  72 // CHECK:   Location is heap block of size 32 at [[BLOCK]] allocated by main thread:
  73 // CHECK:     #0 Allocer1 Alloc.java:11:222
  74 // CHECK:     #1 Allocer2 Alloc.java:33:444
  75 // CHECK: DONE