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Conditionally export JSTimers (retry) 

Reviewed By: davidaurelio

Differential Revision: D5469811

fbshipit-source-id: db7d783d7104123f4402c147d9553f8d393bbf83
This commit is contained in:
Pieter De Baets 2017-07-21 08:10:59 -07:00 committed by Facebook Github Bot
parent 794dddc5bd
commit eb0d99c812
1 changed files with 39 additions and 30 deletions
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69
Libraries/Core/Timers/JSTimers.js
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@ -170,6 +170,34 @@ function _callTimer(timerID: number, frameTime: number, didTimeout: ?boolean) {
}
}
/**
* Performs a single pass over the enqueued immediates. Returns whether
* more immediates are queued up (can be used as a condition a while loop).
*/
function _callImmediatesPass() {
if (__DEV__) {
Systrace.beginEvent('callImmediatesPass()');
}
// The main reason to extract a single pass is so that we can track
// in the system trace
if (immediates.length > 0) {
const passImmediates = immediates.slice();
immediates = [];
// Use for loop rather than forEach as per @vjeux's advice
// https://github.com/facebook/react-native/commit/c8fd9f7588ad02d2293cac7224715f4af7b0f352#commitcomment-14570051
for (let i = 0; i < passImmediates.length; ++i) {
_callTimer(passImmediates[i], 0);
}
}
if (__DEV__) {
Systrace.endEvent();
}
return immediates.length > 0;
}
function _clearIndex(i: number) {
timerIDs[i] = null;
callbacks[i] = null;
@ -422,41 +450,13 @@ const JSTimers = {
}
},
/**
* Performs a single pass over the enqueued immediates. Returns whether
* more immediates are queued up (can be used as a condition a while loop).
*/
callImmediatesPass() {
if (__DEV__) {
Systrace.beginEvent('callImmediatesPass()');
}
// The main reason to extract a single pass is so that we can track
// in the system trace
if (immediates.length > 0) {
const passImmediates = immediates.slice();
immediates = [];
// Use for loop rather than forEach as per @vjeux's advice
// https://github.com/facebook/react-native/commit/c8fd9f7588ad02d2293cac7224715f4af7b0f352#commitcomment-14570051
for (let i = 0; i < passImmediates.length; ++i) {
_callTimer(passImmediates[i], 0);
}
}
if (__DEV__) {
Systrace.endEvent();
}
return immediates.length > 0;
},
/**
* This is called after we execute any command we receive from native but
* before we hand control back to native.
*/
callImmediates() {
errors = null;
while (JSTimers.callImmediatesPass()) {}
while (_callImmediatesPass()) {}
if (errors) {
errors.forEach(error =>
JSTimers.setTimeout(() => {
@ -478,4 +478,13 @@ const JSTimers = {
},
};
module.exports = JSTimers;
if (!Timing) {
console.warn("Timing native module is not available, can't set timers.");
// $FlowFixMe: we can assume timers are generally available
module.exports = ({
callImmediates: JSTimers.callImmediates,
setImmediate: JSTimers.setImmediate,
}: typeof JSTimers);
} else {
module.exports = JSTimers;
}