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// Copyright 2016 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 <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <pthread.h>
#include <emscripten/threading.h>
#include <assert.h>
_Atomic uint32_t main_thread_wait_val = 1;
_Atomic int result = 1;
void *ThreadMain(void *arg)
{
for(int i = 0; i < 10; ++i)
{
char str[256];
sprintf(str, "file%d.txt", i);
printf("Writing file %s..\n", str); // Prints out to page console, this is a proxied operation.
FILE *handle = fopen(str, "w"); // fopen, fputs and fclose are currently proxied operations too (although hopefully not in the future)
fputs(str, handle);
fclose(handle);
}
main_thread_wait_val = 0;
emscripten_futex_wake(&main_thread_wait_val, 1);
result = 0;
pthread_exit(0);
}
int main()
{
pthread_t thread;
int rc = pthread_create(&thread, NULL, ThreadMain, 0);
assert(rc == 0);
rc = emscripten_futex_wait(&main_thread_wait_val, 1, 15 * 1000);
// An rc of 0 means no error, and of EWOULDBLOCK means that the value is
// not the expected one, which can happen if the pthread manages to set it
// before we reach the futex_wait.
if (rc != 0 && rc != -EWOULDBLOCK)
{
printf("ERROR! futex wait errored %d!\n", rc);
return 2;
}
pthread_join(thread, 0);
return result;
}
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