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 async3

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main_thread_wait.cpp

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// Copyright 2019 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 <assert.h>

#include <emscripten.h>

#include <pthread.h>

#include <stdio.h>

int main() {

if (!emscripten_has_threading_support())

{

#ifdef REPORT_RESULT

REPORT_RESULT(0);

#endif

printf("Skipped: Threading is not supported.\n");

return 0;

}

int x = EM_ASM_INT({

onerror = function(e) {

var message = e.toString();

var success = message.indexOf("Blocking on the main thread is not allowed by default. See https://emscripten.org/docs/porting/pthreads.html#blocking-on-the-main-browser-thread") >= 0;

if (success && !Module.reported) {

Module.reported = true;

console.log("reporting success");

// manually REPORT_RESULT; we shouldn't call back into native code at this point

var xhr = new XMLHttpRequest();

xhr.open("GET", "http://localhost:8888/report_result?0");

xhr.send();

}

};

return 0;

});

// This should fail on the main thread.

puts("trying to block...");

pthread_cond_t cv = PTHREAD_COND_INITIALIZER;

pthread_mutex_t lock = PTHREAD_MUTEX_INITIALIZER;

pthread_cond_wait(&cv, &lock);

puts("blocked ok.");

#ifdef REPORT_RESULT

REPORT_RESULT(1);

#endif

}