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#include <emscripten/atomic.h>
#include <emscripten/html5.h>
#include <assert.h>
#ifdef __EMSCRIPTEN_WASM_WORKERS__
#include <emscripten/wasm_worker.h>
#else
#include <pthread.h>
#endif
// Test emscripten_atomic_wait_u32() and emscripten_atomic_notify() functions.
volatile int32_t addr = 0;
void run_test() {
emscripten_out("worker_main");
emscripten_atomic_store_u32((void*)&addr, 1);
emscripten_out("Waiting on address with unexpected value should return 'not-equal'");
ATOMICS_WAIT_RESULT_T ret = emscripten_atomic_wait_u32((int32_t*)&addr, 2, /*timeout=*/-1);
assert(ret == ATOMICS_WAIT_NOT_EQUAL);
emscripten_out("Waiting on address with unexpected value should return 'not-equal' also if timeout==0");
ret = emscripten_atomic_wait_u32((int32_t*)&addr, 2, /*timeout=*/0);
assert(ret == ATOMICS_WAIT_NOT_EQUAL);
emscripten_out("Waiting for 0 nanoseconds should return 'timed-out'");
ret = emscripten_atomic_wait_u32((int32_t*)&addr, 1, /*timeout=*/0);
assert(ret == ATOMICS_WAIT_TIMED_OUT);
emscripten_out("Waiting for >0 nanoseconds should return 'timed-out'");
ret = emscripten_atomic_wait_u32((int32_t*)&addr, 1, /*timeout=*/1000);
assert(ret == ATOMICS_WAIT_TIMED_OUT);
emscripten_out("Waiting for infinitely long should return 'ok'");
emscripten_atomic_store_u32((void*)&addr, 3);
ret = emscripten_atomic_wait_u32((int32_t*)&addr, 3, /*timeout=*/-1);
assert(ret == ATOMICS_WAIT_OK);
emscripten_out("Test finished");
}
// This test run in both wasm workers and pthreads mode
#ifdef __EMSCRIPTEN_WASM_WORKERS__
void worker_main() {
run_test();
#ifdef REPORT_RESULT
REPORT_RESULT(addr);
#endif
}
#else
pthread_t t;
void* thread_main(void* arg) {
run_test();
return 0;
}
#endif
bool main_loop(double time, void *userData) {
if (addr == 3) {
// Burn one second to make sure worker finishes its test.
emscripten_out("main: seen worker running");
double t0 = emscripten_performance_now();
while(emscripten_performance_now() < t0 + 1000);
// Wake the waiter
emscripten_out("main: waking worker");
emscripten_atomic_notify((int32_t*)&addr, 1);
#ifndef __EMSCRIPTEN_WASM_WORKERS__
pthread_join(t, NULL);
#endif
return false;
}
return true;
}
int main() {
emscripten_out("main: creating worker");
#ifdef __EMSCRIPTEN_WASM_WORKERS__
static char stack[1024];
emscripten_wasm_worker_t worker = emscripten_create_wasm_worker(stack, sizeof(stack));
emscripten_wasm_worker_post_function_v(worker, worker_main);
#else
pthread_create(&t, NULL, thread_main, NULL);
#endif
emscripten_out("main: entering timeout loop to wait for wasm worker to run");
emscripten_set_timeout_loop(main_loop, 50, 0);
}
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