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// 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 -DUSE_THREAD -o %t-thread
// RUN: %clangxx_lsan %s -DUSE_PTHREAD -o %t-pthread
// RUN: %env_lsan_opts=$LSAN_BASE:"use_tls=0" not %run %t-thread 2>&1 | FileCheck %s
// RUN: %env_lsan_opts=$LSAN_BASE:"use_tls=1" %run %t-thread 2>&1
// RUN: %env_lsan_opts="" %run %t-thread 2>&1
// RUN: %env_lsan_opts=$LSAN_BASE:"use_tls=0" not %run %t-pthread 2>&1 | FileCheck %s
// RUN: %env_lsan_opts=$LSAN_BASE:"use_tls=1" %run %t-pthread 2>&1
// RUN: %env_lsan_opts="" %run %t-pthread 2>&1
// Patch r303906 did not fix all the problems.
// UNSUPPORTED: arm-linux,armhf-linux
#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;
#if USE_THREAD
__thread void *ptr1;
__thread void *ptr2;
__thread void *ptr3;
__thread void *ptr4;
__thread void *ptr5;
void alloc() {
ptr1 = malloc(1111);
ptr2 = malloc(2222);
ptr3 = malloc(3333);
ptr4 = malloc(4444);
ptr5 = malloc(5555);
}
#elif USE_PTHREAD
// 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");
}
#endif
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() {
#if USE_PTHREAD
for (int i = 0; i < PTHREAD_KEYS_MAX; ++i) {
if (pthread_key_create(&keys[i], pthread_destructor)) {
keys[i] = PTHREAD_KEY_INVALID;
break;
}
}
#endif
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:
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