File size: 4,155 Bytes
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/**
* @license
* Copyright 2015 The Emscripten Authors
* SPDX-License-Identifier: MIT
*/
var emscriptenThreadProfiler = {
// UI update interval in milliseconds.
uiUpdateIntervalMsecs: 1000,
// UI div element.
threadProfilerDiv: null,
// Installs startup hook and periodic UI update timer.
initialize() {
var self = emscriptenThreadProfiler;
self.threadProfilerDiv = document.getElementById('threadprofiler');
if (!self.threadProfilerDiv) {
var div = document.createElement("div");
div.innerHTML = "<div id='threadprofiler' style='margin: 20px; border: solid 1px black;'></div>";
document.body.appendChild(div);
self.threadProfilerDiv = document.getElementById('threadprofiler');
}
var i = setInterval(() => self.updateUi(), self.uiUpdateIntervalMsecs);
addOnExit(() => clearInterval(i));
},
initializeNode() {
addOnInit(() => {
var self = emscriptenThreadProfiler;
self.dumpState();
var i = setInterval(() => self.dumpState(), self.uiUpdateIntervalMsecs);
addOnExit(() => clearInterval(i));
});
},
dumpState() {
var mainThread = _emscripten_main_runtime_thread_id();
var threads = [mainThread];
for (var thread of Object.values(PThread.pthreads)) {
threads.push(thread.pthread_ptr);
}
for (var threadPtr of threads) {
var threadName = PThread.getThreadName(threadPtr);
if (threadName) {
threadName = `"${threadName}" (${ptrToString(threadPtr)})`;
} else {
threadName = `(${ptrToString(threadPtr)})`;
}
console.log(`Thread ${threadName} now: ${PThread.threadStatusAsString(threadPtr)}. `);
}
},
updateUi() {
if (typeof PThread == 'undefined') {
// Likely running threadprofiler on a singlethreaded build, or not
// initialized yet, ignore updating.
return;
}
if (!runtimeInitialized) {
return;
}
var str = '';
var mainThread = _emscripten_main_runtime_thread_id();
var threads = [mainThread];
for (var thread of Object.values(PThread.pthreads)) {
threads.push(thread.pthread_ptr);
}
for (var threadPtr of threads) {
var profilerBlock = Atomics.load({{{ getHeapForType('*') }}}, {{{ getHeapOffset('threadPtr + ' + C_STRUCTS.pthread.profilerBlock, '*') }}});
#if MEMORY64
profilerBlock = Number(profilerBlock);
#endif
var threadName = PThread.getThreadName(threadPtr);
if (threadName) {
threadName = `"${threadName}" (${ptrToString(threadPtr)})`;
} else {
threadName = `(${ptrToString(threadPtr)})`;
}
str += `Thread ${threadName} now: ${PThread.threadStatusAsString(threadPtr)}. `;
var threadTimesInStatus = [];
var totalTime = 0;
var offset = profilerBlock + {{{ C_STRUCTS.thread_profiler_block.timeSpentInStatus }}};
for (var j = 0; j < {{{ cDefs.EM_THREAD_STATUS_NUMFIELDS }}}; ++j, offset += 8) {
threadTimesInStatus.push({{{ makeGetValue('offset', 0, 'double') }}});
totalTime += threadTimesInStatus[j];
{{{ makeSetValue('offset', 0, 0, 'double') }}};
}
var recent = '';
if (threadTimesInStatus[1] > 0) recent += (threadTimesInStatus[1] / totalTime * 100.0).toFixed(1) + '% running. ';
if (threadTimesInStatus[2] > 0) recent += (threadTimesInStatus[2] / totalTime * 100.0).toFixed(1) + '% sleeping. ';
if (threadTimesInStatus[3] > 0) recent += (threadTimesInStatus[3] / totalTime * 100.0).toFixed(1) + '% waiting for futex. ';
if (threadTimesInStatus[4] > 0) recent += (threadTimesInStatus[4] / totalTime * 100.0).toFixed(1) + '% waiting for mutex. ';
if (threadTimesInStatus[5] > 0) recent += (threadTimesInStatus[5] / totalTime * 100.0).toFixed(1) + '% waiting for proxied ops. ';
if (recent.length > 0) str += `Recent activity: ${recent}`;
str += '<br />';
}
emscriptenThreadProfiler.threadProfilerDiv.innerHTML = str;
}
};
if (globalThis.document) {
emscriptenThreadProfiler.initialize();
} else if (!ENVIRONMENT_IS_PTHREAD && globalThis.process) {
emscriptenThreadProfiler.initializeNode();
}
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