40 lines
980 B
C++
40 lines
980 B
C++
// Simple stress test for of pthread_create. Increase arg to use as benchmark.
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// RUN: %clangxx -O3 -pthread %s -o %t && %run %t 10
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// Crashes on Android.
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// UNSUPPORTED: android
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#include <cstdint>
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#include <pthread.h>
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#include <stdlib.h>
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extern "C" const char *__asan_default_options() {
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// 32bit asan can allocate just a few FakeStacks.
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return sizeof(void *) < 8 ? "detect_stack_use_after_return=0" : "";
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}
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static void *null_func(void *args) { return nullptr; }
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static void *loop(void *args) {
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uintptr_t n = (uintptr_t)args;
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for (int i = 0; i < n; ++i) {
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pthread_t thread;
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if (pthread_create(&thread, 0, null_func, nullptr) == 0)
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pthread_detach(thread);
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}
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return nullptr;
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}
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int main(int argc, char **argv) {
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uintptr_t n = atoi(argv[1]);
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pthread_t threads[64];
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for (auto &thread : threads)
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while (pthread_create(&thread, 0, loop, (void *)n) != 0) {
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}
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for (auto &thread : threads)
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pthread_join(thread, nullptr);
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return 0;
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}
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