tsan: add memory access functions that accept pc

This is required for Java support, as real PCs don't work for Java.



git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@236484 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 36 insertions, 0 deletions

diff --git a/test/tsan/java_race_pc.cc b/test/tsan/java_race_pc.cc
new file mode 100644
index 000000000..015a0b1f4
--- /dev/null
+++ b/test/tsan/java_race_pc.cc
@@ -0,0 +1,36 @@
+// RUN: %clangxx_tsan -O1 %s -o %t && %deflake %run %t | FileCheck %s
+#include "java.h"
+
+void foobar() {
+}
+
+void barbaz() {
+}
+
+void *Thread(void *p) {
+  barrier_wait(&barrier);
+  __tsan_read1_pc((jptr)p, (jptr)foobar + 1);
+  return 0;
+}
+
+int main() {
+  barrier_init(&barrier, 2);
+  int const kHeapSize = 1024 * 1024;
+  jptr jheap = (jptr)malloc(kHeapSize + 8) + 8;
+  __tsan_java_init(jheap, kHeapSize);
+  const int kBlockSize = 16;
+  __tsan_java_alloc(jheap, kBlockSize);
+  pthread_t th;
+  pthread_create(&th, 0, Thread, (void*)jheap);
+  __tsan_write1_pc((jptr)jheap, (jptr)barbaz + 1);
+  barrier_wait(&barrier);
+  pthread_join(th, 0);
+  __tsan_java_free(jheap, kBlockSize);
+  fprintf(stderr, "DONE\n");
+  return __tsan_java_fini();
+}
+
+// CHECK: WARNING: ThreadSanitizer: data race
+// CHECK:     #0 foobar
+// CHECK:     #0 barbaz
+// CHECK: DONE