1 // Test that threads are reused.
2 // On Android, pthread_* are in libc.so. So the `-lpthread` is not supported.
3 // Use `-pthread` so that its driver will DTRT (ie., ignore it).
4 // RUN: %clangxx_lsan %s -o %t -pthread && %run %t
5 
6 #include <assert.h>
7 #include <dirent.h>
8 #include <pthread.h>
9 #include <stdlib.h>
10 #include <unistd.h>
11 
12 // Number of threads to create. This value is greater than kMaxThreads in
13 // lsan_thread.cpp so that we can test that thread contexts are not being
14 // reused.
15 static const size_t kTestThreads = 10000;
16 
17 // Limit the number of simultaneous threads to avoid reaching the limit.
18 static const size_t kTestThreadsBatch = 100;
19 
null_func(void * args)20 void *null_func(void *args) {
21   return NULL;
22 }
23 
main(void)24 int main(void) {
25   for (size_t i = 0; i < kTestThreads; i += kTestThreadsBatch) {
26     pthread_t thread[kTestThreadsBatch];
27     for (size_t j = 0; j < kTestThreadsBatch; ++j)
28       assert(pthread_create(&thread[j], NULL, null_func, NULL) == 0);
29 
30     for (size_t j = 0; j < kTestThreadsBatch; ++j)
31       assert(pthread_join(thread[j], NULL) == 0);
32   }
33   return 0;
34 }
35