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/** @license React v0.20.2
* scheduler-tracing.development.js
*
* Copyright (c) Facebook, Inc. and its affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
'use strict';
if (process.env.NODE_ENV !== "production") {
(function() {
'use strict';
var DEFAULT_THREAD_ID = 0; // Counters used to generate unique IDs.
var interactionIDCounter = 0;
var threadIDCounter = 0; // Set of currently traced interactions.
// Interactions "stack"–
// Meaning that newly traced interactions are appended to the previously active set.
// When an interaction goes out of scope, the previous set (if any) is restored.
exports.__interactionsRef = null; // Listener(s) to notify when interactions begin and end.
exports.__subscriberRef = null;
{
exports.__interactionsRef = {
current: new Set()
};
exports.__subscriberRef = {
current: null
};
}
function unstable_clear(callback) {
var prevInteractions = exports.__interactionsRef.current;
exports.__interactionsRef.current = new Set();
try {
return callback();
} finally {
exports.__interactionsRef.current = prevInteractions;
}
}
function unstable_getCurrent() {
{
return exports.__interactionsRef.current;
}
}
function unstable_getThreadID() {
return ++threadIDCounter;
}
function unstable_trace(name, timestamp, callback) {
var threadID = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : DEFAULT_THREAD_ID;
var interaction = {
__count: 1,
id: interactionIDCounter++,
name: name,
timestamp: timestamp
};
var prevInteractions = exports.__interactionsRef.current; // Traced interactions should stack/accumulate.
// To do that, clone the current interactions.
// The previous set will be restored upon completion.
var interactions = new Set(prevInteractions);
interactions.add(interaction);
exports.__interactionsRef.current = interactions;
var subscriber = exports.__subscriberRef.current;
var returnValue;
try {
if (subscriber !== null) {
subscriber.onInteractionTraced(interaction);
}
} finally {
try {
if (subscriber !== null) {
subscriber.onWorkStarted(interactions, threadID);
}
} finally {
try {
returnValue = callback();
} finally {
exports.__interactionsRef.current = prevInteractions;
try {
if (subscriber !== null) {
subscriber.onWorkStopped(interactions, threadID);
}
} finally {
interaction.__count--; // If no async work was scheduled for this interaction,
// Notify subscribers that it's completed.
if (subscriber !== null && interaction.__count === 0) {
subscriber.onInteractionScheduledWorkCompleted(interaction);
}
}
}
}
}
return returnValue;
}
function unstable_wrap(callback) {
var threadID = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : DEFAULT_THREAD_ID;
var wrappedInteractions = exports.__interactionsRef.current;
var subscriber = exports.__subscriberRef.current;
if (subscriber !== null) {
subscriber.onWorkScheduled(wrappedInteractions, threadID);
} // Update the pending async work count for the current interactions.
// Update after calling subscribers in case of error.
wrappedInteractions.forEach(function (interaction) {
interaction.__count++;
});
var hasRun = false;
function wrapped() {
var prevInteractions = exports.__interactionsRef.current;
exports.__interactionsRef.current = wrappedInteractions;
subscriber = exports.__subscriberRef.current;
try {
var returnValue;
try {
if (subscriber !== null) {
subscriber.onWorkStarted(wrappedInteractions, threadID);
}
} finally {
try {
returnValue = callback.apply(undefined, arguments);
} finally {
exports.__interactionsRef.current = prevInteractions;
if (subscriber !== null) {
subscriber.onWorkStopped(wrappedInteractions, threadID);
}
}
}
return returnValue;
} finally {
if (!hasRun) {
// We only expect a wrapped function to be executed once,
// But in the event that it's executed more than once–
// Only decrement the outstanding interaction counts once.
hasRun = true; // Update pending async counts for all wrapped interactions.
// If this was the last scheduled async work for any of them,
// Mark them as completed.
wrappedInteractions.forEach(function (interaction) {
interaction.__count--;
if (subscriber !== null && interaction.__count === 0) {
subscriber.onInteractionScheduledWorkCompleted(interaction);
}
});
}
}
}
wrapped.cancel = function cancel() {
subscriber = exports.__subscriberRef.current;
try {
if (subscriber !== null) {
subscriber.onWorkCanceled(wrappedInteractions, threadID);
}
} finally {
// Update pending async counts for all wrapped interactions.
// If this was the last scheduled async work for any of them,
// Mark them as completed.
wrappedInteractions.forEach(function (interaction) {
interaction.__count--;
if (subscriber && interaction.__count === 0) {
subscriber.onInteractionScheduledWorkCompleted(interaction);
}
});
}
};
return wrapped;
}
var subscribers = null;
{
subscribers = new Set();
}
function unstable_subscribe(subscriber) {
{
subscribers.add(subscriber);
if (subscribers.size === 1) {
exports.__subscriberRef.current = {
onInteractionScheduledWorkCompleted: onInteractionScheduledWorkCompleted,
onInteractionTraced: onInteractionTraced,
onWorkCanceled: onWorkCanceled,
onWorkScheduled: onWorkScheduled,
onWorkStarted: onWorkStarted,
onWorkStopped: onWorkStopped
};
}
}
}
function unstable_unsubscribe(subscriber) {
{
subscribers.delete(subscriber);
if (subscribers.size === 0) {
exports.__subscriberRef.current = null;
}
}
}
function onInteractionTraced(interaction) {
var didCatchError = false;
var caughtError = null;
subscribers.forEach(function (subscriber) {
try {
subscriber.onInteractionTraced(interaction);
} catch (error) {
if (!didCatchError) {
didCatchError = true;
caughtError = error;
}
}
});
if (didCatchError) {
throw caughtError;
}
}
function onInteractionScheduledWorkCompleted(interaction) {
var didCatchError = false;
var caughtError = null;
subscribers.forEach(function (subscriber) {
try {
subscriber.onInteractionScheduledWorkCompleted(interaction);
} catch (error) {
if (!didCatchError) {
didCatchError = true;
caughtError = error;
}
}
});
if (didCatchError) {
throw caughtError;
}
}
function onWorkScheduled(interactions, threadID) {
var didCatchError = false;
var caughtError = null;
subscribers.forEach(function (subscriber) {
try {
subscriber.onWorkScheduled(interactions, threadID);
} catch (error) {
if (!didCatchError) {
didCatchError = true;
caughtError = error;
}
}
});
if (didCatchError) {
throw caughtError;
}
}
function onWorkStarted(interactions, threadID) {
var didCatchError = false;
var caughtError = null;
subscribers.forEach(function (subscriber) {
try {
subscriber.onWorkStarted(interactions, threadID);
} catch (error) {
if (!didCatchError) {
didCatchError = true;
caughtError = error;
}
}
});
if (didCatchError) {
throw caughtError;
}
}
function onWorkStopped(interactions, threadID) {
var didCatchError = false;
var caughtError = null;
subscribers.forEach(function (subscriber) {
try {
subscriber.onWorkStopped(interactions, threadID);
} catch (error) {
if (!didCatchError) {
didCatchError = true;
caughtError = error;
}
}
});
if (didCatchError) {
throw caughtError;
}
}
function onWorkCanceled(interactions, threadID) {
var didCatchError = false;
var caughtError = null;
subscribers.forEach(function (subscriber) {
try {
subscriber.onWorkCanceled(interactions, threadID);
} catch (error) {
if (!didCatchError) {
didCatchError = true;
caughtError = error;
}
}
});
if (didCatchError) {
throw caughtError;
}
}
exports.unstable_clear = unstable_clear;
exports.unstable_getCurrent = unstable_getCurrent;
exports.unstable_getThreadID = unstable_getThreadID;
exports.unstable_subscribe = unstable_subscribe;
exports.unstable_trace = unstable_trace;
exports.unstable_unsubscribe = unstable_unsubscribe;
exports.unstable_wrap = unstable_wrap;
})();
}
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