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library_pthread_stub.js
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55 lines (47 loc) · 1.75 KB
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/**
* @license
* Copyright 2015 The Emscripten Authors
* SPDX-License-Identifier: MIT
*/
var LibraryPThreadStub = {
// ===================================================================================
// Stub implementation for pthread.h when not compiling with pthreads support enabled.
// ===================================================================================
emscripten_is_main_browser_thread: function() {
#if MINIMAL_RUNTIME
return typeof importScripts === 'undefined';
#else
return !ENVIRONMENT_IS_WORKER;
#endif
},
pthread_cleanup_push__sig: 'vii',
pthread_cleanup_push: function(routine, arg) {
__ATEXIT__.push({ func: routine, arg: arg });
_pthread_cleanup_push.level = __ATEXIT__.length;
},
pthread_cleanup_pop__sig: 'vi',
pthread_cleanup_pop: function(execute) {
assert(_pthread_cleanup_push.level == __ATEXIT__.length, 'cannot pop if something else added meanwhile!');
callback = __ATEXIT__.pop();
if (execute) {
{{{ makeDynCall('vi', 'callback.func') }}}(callback.arg)
}
_pthread_cleanup_push.level = __ATEXIT__.length;
},
{{{ USE_LSAN || USE_ASAN ? 'emscripten_builtin_' : '' }}}pthread_create: function() {
return {{{ cDefine('EAGAIN') }}};
},
{{{ USE_LSAN ? 'emscripten_builtin_' : '' }}}pthread_join: function() {
return {{{ cDefine('EINVAL') }}};
},
// When pthreads is not enabled, we can't use the Atomics futex api to do
// proper sleeps, so simulate a busy spin wait loop instead.
emscripten_thread_sleep__deps: ['emscripten_get_now'],
emscripten_thread_sleep: function(msecs) {
var start = _emscripten_get_now();
while (_emscripten_get_now() - start < msecs) {
// Do nothing.
}
},
};
mergeInto(LibraryManager.library, LibraryPThreadStub);