| // Test that lsan handles tls correctly for many threads |
| // RUN: LSAN_BASE="report_objects=1:use_stacks=0:use_registers=0" |
| // RUN: %clangxx_lsan %s -o %t |
| // RUN: %env_lsan_opts=$LSAN_BASE:"use_tls=0" not %run %t 2>&1 | FileCheck %s |
| // RUN: %env_lsan_opts=$LSAN_BASE:"use_tls=1" %run %t 2>&1 |
| // RUN: %env_lsan_opts="" %run %t 2>&1 |
| |
| // Patch r303906 did not fix all the problems. |
| // UNSUPPORTED: arm-linux,armhf-linux |
| |
| // TSD on NetBSD does not use TLS |
| // UNSUPPORTED: netbsd |
| |
| #include <assert.h> |
| #include <limits.h> |
| #include <pthread.h> |
| #include <stdlib.h> |
| #include <unistd.h> |
| |
| static const int NUM_THREADS = 10; |
| |
| pthread_cond_t cond = PTHREAD_COND_INITIALIZER; |
| pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER; |
| int finished = 0; |
| |
| // We won't be able to create the maximum number of keys, due to other users |
| // of the tls, but we'll use as many keys as we can before failing to create |
| // a new key. |
| pthread_key_t keys[PTHREAD_KEYS_MAX]; |
| static const int PTHREAD_KEY_INVALID = 0xffffffff; |
| |
| void alloc() { |
| for (int i = 0; i < PTHREAD_KEYS_MAX; ++i) { |
| void *ptr = malloc(123); |
| if ((keys[i] == PTHREAD_KEY_INVALID) || pthread_setspecific(keys[i], ptr)) { |
| free(ptr); |
| break; |
| } |
| } |
| } |
| |
| void pthread_destructor(void *arg) { |
| assert(0 && "pthread destructors shouldn't be called"); |
| } |
| |
| void *thread_start(void *arg) { |
| alloc(); |
| |
| pthread_mutex_lock(&mutex); |
| finished++; |
| pthread_mutex_unlock(&mutex); |
| |
| // don't exit, to intentionally leak tls data |
| while (1) |
| sleep(100); |
| } |
| |
| int main() { |
| for (int i = 0; i < PTHREAD_KEYS_MAX; ++i) { |
| if (pthread_key_create(&keys[i], pthread_destructor)) { |
| keys[i] = PTHREAD_KEY_INVALID; |
| break; |
| } |
| } |
| |
| pthread_t thread[NUM_THREADS]; |
| for (int i = 0; i < NUM_THREADS; ++i) { |
| assert(0 == pthread_create(&thread[i], 0, thread_start, 0)); |
| } |
| // spin until all threads have finished |
| while (finished < NUM_THREADS) |
| sleep(1); |
| exit(0); |
| } |
| |
| // CHECK: LeakSanitizer: detected memory leaks |
| // CHECK: SUMMARY: {{(Leak|Address)}}Sanitizer: |