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