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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 <pthread.h>
#include <sys/types.h>
#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
#include <emscripten.h>
static void *thread_start(void *arg)
{
// allocate more memory than we currently have, forcing a growth
printf("thread_start\n");
char* buffer = (char*)malloc(64 * 1024 * 1024);
assert(buffer);
*buffer = 42;
pthread_exit((void*)buffer);
}
int main()
{
printf("prep\n");
pthread_t thr;
printf("start\n");
EM_ASM({ assert(HEAP8.length === 32 * 1024 * 1024, "start at 32MB") });
printf("create\n");
int s = pthread_create(&thr, NULL, thread_start, (void*)NULL);
assert(s == 0);
void* result = NULL;
printf("join\n");
s = pthread_join(thr, &result);
assert(result != 0); // allocation should have succeeded
char* buffer = (char*)result;
assert(*buffer == 42); // should see the value the thread wrote
EM_ASM({ assert(HEAP8.length > 64 * 1024 * 1024, "end with >64MB") });
return 0;
}
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