test/pthread/test_pthread_supported.c

// Copyright 2015 The Emscripten Authors.  All rights reserved.
// Emscripten is available under two separate licenses, the MIT license and the
// University of Illinois/NCSA Open Source License.  Both these licenses can be
// found in the LICENSE file.

#include <stdio.h>
#include <stdlib.h>
#include <pthread.h>
#include <emscripten/emscripten.h>
#include <emscripten/threading.h>
#include <assert.h>
#include <errno.h>

void *ThreadMain(void *arg) {
  pthread_exit(NULL);
}

int main() {
  pthread_t thread;
  int rc = pthread_create(&thread, NULL, ThreadMain, NULL);
  pthread_join(thread, NULL);

  if (emscripten_has_threading_support()) {
    assert(rc == 0);
  } else {
    assert(rc == ENOTSUP);
  }

  return 0;
}