Initial empty test

Author: cwoffenden

test/test_interactive.py

@@ -293,10 +293,10 @@ def test_audio_worklet(self):
     self.btest('webaudio/audioworklet.c', expected='0', args=['-sAUDIO_WORKLET', '-sWASM_WORKERS', '--preload-file', test_file('hello_world.c') + '@/'])
     self.btest('webaudio/audioworklet.c', expected='0', args=['-sAUDIO_WORKLET', '-sWASM_WORKERS', '-pthread'])
 
-  # Tests AudioWorklet with emscripten_futex_wake().
+  # Tests AudioWorklet with emscripten_lock_busyspin_wait_acquire() and friends.
   @also_with_minimal_runtime
-  def test_audio_worklet_emscripten_futex_wake(self):
-    self.btest('webaudio/audioworklet_emscripten_futex_wake.cpp', expected='0', args=['-sAUDIO_WORKLET', '-sWASM_WORKERS', '-pthread', '-sPTHREAD_POOL_SIZE=2'])
+  def test_audio_worklet_emscripten_locks(self):
+    self.btest('webaudio/audioworklet_emscripten_locks.cpp', expected='0', args=['-sAUDIO_WORKLET', '-sWASM_WORKERS', '-pthread', '-sPTHREAD_POOL_SIZE=2'])
 
   # Tests a second AudioWorklet example: sine wave tone generator.
   def test_audio_worklet_tone_generator(self):

test/webaudio/audioworklet_emscripten_locks.cpp

@@ -1,26 +1,27 @@
+#include <emscripten/wasm_worker.h>
 #include <emscripten/webaudio.h>
-#include <emscripten/threading.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <assert.h>
 
-// Tests that
-// - _emscripten_thread_supports_atomics_wait() returns true in a Wasm Audio Worklet.
-// - emscripten_futex_wake() does not crash in a Wasm Audio Worklet.
-// - emscripten_futex_wait() does not crash in a Wasm Audio Worklet.
+// Tests that these audio worklet compatible functions work:
+// - emscripten_lock_init()
+// - emscripten_lock_busyspin_wait_acquire()
+// - emscripten_lock_busyspin_waitinf_acquire()
+// - emscripten_lock_try_acquire()
+// - emscripten_lock_release()
 // - emscripten_get_now() does not crash in a Wasm Audio Worklet.
 
-int futexLocation = 0;
+// Todo: add/find a way to verify atomic wait fails?
+
+emscripten_lock_t testLock = EMSCRIPTEN_LOCK_T_STATIC_INITIALIZER;
 int testSuccess = 0;
 
 bool ProcessAudio(int numInputs, const AudioSampleFrame *inputs, int numOutputs, AudioSampleFrame *outputs, int numParams, const AudioParamFrame *params, void *userData) {
-  int supportsAtomicWait = _emscripten_thread_supports_atomics_wait();
-  printf("supportsAtomicWait: %d\n", supportsAtomicWait);
-  assert(!supportsAtomicWait);
-  emscripten_futex_wake(&futexLocation, 1);
+  //emscripten_futex_wake(&futexLocation, 1);
   printf("%f\n", emscripten_get_now());
 
-  emscripten_futex_wait(&futexLocation, 1, /*maxWaitMs=*/2);
+  //emscripten_futex_wait(&futexLocation, 1, /*maxWaitMs=*/2);
   testSuccess = 1;
 
   return false;
@@ -64,6 +65,7 @@ void WebAudioWorkletThreadInitialized(EMSCRIPTEN_WEBAUDIO_T audioContext, bool s
 uint8_t wasmAudioWorkletStack[4096];
 
 int main() {
+  emscripten_lock_init(&testLock);
   emscripten_set_timeout_loop(PollTestSuccess, 10, 0);
   EMSCRIPTEN_WEBAUDIO_T context = emscripten_create_audio_context(0);
   emscripten_start_wasm_audio_worklet_thread_async(context, wasmAudioWorkletStack, sizeof(wasmAudioWorkletStack), WebAudioWorkletThreadInitialized, 0);