bde4c9c773
The new storage (MetaMap) is based on direct shadow (instead of a hashmap + per-block lists). This solves a number of problems: - eliminates quadratic behaviour in SyncTab::GetAndLock (https://code.google.com/p/thread-sanitizer/issues/detail?id=26) - eliminates contention in SyncTab - eliminates contention in internal allocator during allocation of sync objects - removes a bunch of ad-hoc code in java interface - reduces java shadow from 2x to 1/2x - allows to memorize heap block meta info for Java and Go - allows to cleanup sync object meta info for Go - which in turn enabled deadlock detector for Go llvm-svn: 209810
39 lines
896 B
C++
39 lines
896 B
C++
// RUN: %clangxx_tsan -O1 %s -o %t && %run %t 2>&1 | FileCheck %s
|
|
#include "java.h"
|
|
|
|
int const kHeapSize = 1024 * 1024;
|
|
|
|
void stress(jptr addr) {
|
|
for (jptr sz = 8; sz <= 32; sz <<= 1) {
|
|
for (jptr i = 0; i < kHeapSize / 4 / sz; i++) {
|
|
__tsan_java_alloc(addr + i * sz, sz);
|
|
}
|
|
__tsan_java_move(addr, addr + kHeapSize / 2, kHeapSize / 4);
|
|
__tsan_java_free(addr + kHeapSize / 2, kHeapSize / 4);
|
|
}
|
|
}
|
|
|
|
void *Thread(void *p) {
|
|
stress((jptr)p);
|
|
return 0;
|
|
}
|
|
|
|
int main() {
|
|
jptr jheap = (jptr)malloc(kHeapSize + 8) + 8;
|
|
__tsan_java_init(jheap, kHeapSize);
|
|
pthread_t th;
|
|
pthread_create(&th, 0, Thread, (void*)(jheap + kHeapSize / 4));
|
|
stress(jheap);
|
|
pthread_join(th, 0);
|
|
if (__tsan_java_fini() != 0) {
|
|
printf("FAILED\n");
|
|
return 1;
|
|
}
|
|
printf("DONE\n");
|
|
return 0;
|
|
}
|
|
|
|
// CHECK-NOT: WARNING: ThreadSanitizer: data race
|
|
// CHECK-NOT: FAILED
|
|
// CHECK: DONE
|