llvm-project/compiler-rt/test/lsan/TestCases/many_threads_detach.cpp
Marco Vanotti a83eb048cb [lsan] Add interceptor for pthread_detach.
This commit adds an interceptor for the pthread_detach function,
calling into ThreadRegistry::DetachThread, allowing for thread contexts
to be reused.

Without this change, programs may fail when they create more than 8K
threads.

Fixes: https://bugs.llvm.org/show_bug.cgi?id=47389

Reviewed By: vitalybuka

Differential Revision: https://reviews.llvm.org/D88184
2020-09-25 14:22:45 -07:00

24 lines
561 B
C++

// Test that threads are reused.
// RUN: %clangxx_lsan %s -o %t -lpthread && %run %t
#include <pthread.h>
#include <stdlib.h>
// Number of threads to create. This value is greater than kMaxThreads in
// lsan_thread.cpp so that we can test that thread contexts are not being
// reused.
static const size_t kTestThreads = 10000;
void *null_func(void *args) {
return NULL;
}
int main(void) {
for (size_t i = 0; i < kTestThreads; i++) {
pthread_t thread;
pthread_create(&thread, NULL, null_func, NULL);
pthread_detach(thread);
}
return 0;
}