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benchmark.js
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benchmark.js
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// Copyright 2004-present Facebook. All Rights Reserved.
// Licensed under the Apache License, Version 2.0 (the "License"); you may
// not use this file except in compliance with the License. You may obtain
// a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations
// under the License.
var Benchmark = (function() {
var count = 0;
var frame = 0;
var backoff = 0;
var num = 1;
var w, h;
var inc;
var dec;
var desc;
var tid;
var nodel;
var targetfps;
var timenear;
var testover;
var slowframes;
var demo;
var runtest = false;
var Benchmark = {};
function setup(criteria) {
inc = criteria.inc;
dec = criteria.dec;
num = criteria.num || num;
demo = criteria.demo || null;
tid = criteria.tid;
w = criteria.w || Browser.winsize[0];
h = criteria.h || Browser.winsize[1];
nodel = criteria.nodel;
count = 0;
frame = 0;
backoff = 0;
slowframes = 0;
targetfps = criteria.tfps ? criteria.tfps : 30;
runtest = true;
Benchmark.name = tid;
}
function tick() {
if (runtest && inc && dec && (frame++ > 2)) {
frame = 0;
var fps = Tick.fps();
if (Tick.slowframe) {
slowframes++;
if (!demo && slowframes == 5) {
PerfTest.done(tid, 0);
}
for (var i = 0; i < num; i++) {
if (count > 1)
dec(--count);
}
if (num > 1)
num--;
else
backoff++;
} else {
if (!count || (fps >= targetfps)) {
for (var i = 0; i < num; i++) {
inc(count++, w, h);
}
} else if (fps < targetfps) {
if (!demo && backoff > 20) {
runtest = false;
PerfTest.done(tid, count);
} else {
if (!nodel) {
for (var i = 0; i < num; i++) {
if (count > 1)
dec(--count);
}
if (num > 1)
num--;
else
backoff++;
}
}
}
}
}
}
function getCurrentCount() {
return count;
}
function reset() {
Benchmark.name = null;
runtest = false;
}
Benchmark.reset = reset;
Benchmark.tick = tick;
Benchmark.setup = setup;
Benchmark.count = getCurrentCount;
return Benchmark;
})();