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/** @license React v0.19.1
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* scheduler-tracing.development.js
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*
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* Copyright (c) Facebook, Inc. and its affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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'use strict';
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if (process.env.NODE_ENV !== "production") {
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(function() {
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'use strict';
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var DEFAULT_THREAD_ID = 0; // Counters used to generate unique IDs.
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var interactionIDCounter = 0;
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var threadIDCounter = 0; // Set of currently traced interactions.
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// Interactions "stack"–
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// Meaning that newly traced interactions are appended to the previously active set.
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// When an interaction goes out of scope, the previous set (if any) is restored.
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exports.__interactionsRef = null; // Listener(s) to notify when interactions begin and end.
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exports.__subscriberRef = null;
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{
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exports.__interactionsRef = {
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current: new Set()
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};
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exports.__subscriberRef = {
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current: null
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};
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}
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function unstable_clear(callback) {
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var prevInteractions = exports.__interactionsRef.current;
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exports.__interactionsRef.current = new Set();
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try {
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return callback();
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} finally {
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exports.__interactionsRef.current = prevInteractions;
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}
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}
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function unstable_getCurrent() {
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{
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return exports.__interactionsRef.current;
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}
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}
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function unstable_getThreadID() {
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return ++threadIDCounter;
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}
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function unstable_trace(name, timestamp, callback) {
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var threadID = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : DEFAULT_THREAD_ID;
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var interaction = {
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__count: 1,
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id: interactionIDCounter++,
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name: name,
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timestamp: timestamp
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};
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var prevInteractions = exports.__interactionsRef.current; // Traced interactions should stack/accumulate.
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// To do that, clone the current interactions.
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// The previous set will be restored upon completion.
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var interactions = new Set(prevInteractions);
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interactions.add(interaction);
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exports.__interactionsRef.current = interactions;
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var subscriber = exports.__subscriberRef.current;
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var returnValue;
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try {
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if (subscriber !== null) {
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subscriber.onInteractionTraced(interaction);
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}
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} finally {
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try {
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if (subscriber !== null) {
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subscriber.onWorkStarted(interactions, threadID);
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}
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} finally {
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try {
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returnValue = callback();
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} finally {
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exports.__interactionsRef.current = prevInteractions;
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try {
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if (subscriber !== null) {
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subscriber.onWorkStopped(interactions, threadID);
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}
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} finally {
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interaction.__count--; // If no async work was scheduled for this interaction,
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// Notify subscribers that it's completed.
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if (subscriber !== null && interaction.__count === 0) {
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subscriber.onInteractionScheduledWorkCompleted(interaction);
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}
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}
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}
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}
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}
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return returnValue;
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}
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function unstable_wrap(callback) {
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var threadID = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : DEFAULT_THREAD_ID;
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var wrappedInteractions = exports.__interactionsRef.current;
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var subscriber = exports.__subscriberRef.current;
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if (subscriber !== null) {
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subscriber.onWorkScheduled(wrappedInteractions, threadID);
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} // Update the pending async work count for the current interactions.
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// Update after calling subscribers in case of error.
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wrappedInteractions.forEach(function (interaction) {
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interaction.__count++;
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});
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var hasRun = false;
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function wrapped() {
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var prevInteractions = exports.__interactionsRef.current;
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exports.__interactionsRef.current = wrappedInteractions;
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subscriber = exports.__subscriberRef.current;
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try {
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var returnValue;
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try {
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if (subscriber !== null) {
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subscriber.onWorkStarted(wrappedInteractions, threadID);
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}
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} finally {
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try {
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returnValue = callback.apply(undefined, arguments);
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} finally {
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exports.__interactionsRef.current = prevInteractions;
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if (subscriber !== null) {
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subscriber.onWorkStopped(wrappedInteractions, threadID);
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}
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}
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}
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return returnValue;
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} finally {
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if (!hasRun) {
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// We only expect a wrapped function to be executed once,
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// But in the event that it's executed more than once–
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// Only decrement the outstanding interaction counts once.
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hasRun = true; // Update pending async counts for all wrapped interactions.
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// If this was the last scheduled async work for any of them,
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// Mark them as completed.
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wrappedInteractions.forEach(function (interaction) {
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interaction.__count--;
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if (subscriber !== null && interaction.__count === 0) {
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subscriber.onInteractionScheduledWorkCompleted(interaction);
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}
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});
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}
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}
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}
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wrapped.cancel = function cancel() {
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subscriber = exports.__subscriberRef.current;
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try {
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if (subscriber !== null) {
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subscriber.onWorkCanceled(wrappedInteractions, threadID);
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}
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} finally {
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// Update pending async counts for all wrapped interactions.
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// If this was the last scheduled async work for any of them,
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// Mark them as completed.
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wrappedInteractions.forEach(function (interaction) {
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interaction.__count--;
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if (subscriber && interaction.__count === 0) {
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subscriber.onInteractionScheduledWorkCompleted(interaction);
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}
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});
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}
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};
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return wrapped;
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}
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var subscribers = null;
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{
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subscribers = new Set();
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}
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function unstable_subscribe(subscriber) {
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{
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subscribers.add(subscriber);
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if (subscribers.size === 1) {
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exports.__subscriberRef.current = {
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onInteractionScheduledWorkCompleted: onInteractionScheduledWorkCompleted,
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onInteractionTraced: onInteractionTraced,
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onWorkCanceled: onWorkCanceled,
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onWorkScheduled: onWorkScheduled,
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onWorkStarted: onWorkStarted,
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onWorkStopped: onWorkStopped
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};
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}
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}
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}
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function unstable_unsubscribe(subscriber) {
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{
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subscribers.delete(subscriber);
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if (subscribers.size === 0) {
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exports.__subscriberRef.current = null;
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}
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}
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}
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function onInteractionTraced(interaction) {
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var didCatchError = false;
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var caughtError = null;
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subscribers.forEach(function (subscriber) {
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try {
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subscriber.onInteractionTraced(interaction);
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} catch (error) {
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if (!didCatchError) {
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didCatchError = true;
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caughtError = error;
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}
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}
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});
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if (didCatchError) {
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throw caughtError;
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}
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}
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function onInteractionScheduledWorkCompleted(interaction) {
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var didCatchError = false;
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var caughtError = null;
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subscribers.forEach(function (subscriber) {
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try {
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subscriber.onInteractionScheduledWorkCompleted(interaction);
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} catch (error) {
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if (!didCatchError) {
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didCatchError = true;
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caughtError = error;
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}
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}
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});
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if (didCatchError) {
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throw caughtError;
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}
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}
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function onWorkScheduled(interactions, threadID) {
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var didCatchError = false;
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var caughtError = null;
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subscribers.forEach(function (subscriber) {
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try {
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subscriber.onWorkScheduled(interactions, threadID);
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} catch (error) {
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if (!didCatchError) {
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didCatchError = true;
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caughtError = error;
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}
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}
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});
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if (didCatchError) {
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throw caughtError;
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}
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}
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function onWorkStarted(interactions, threadID) {
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var didCatchError = false;
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var caughtError = null;
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subscribers.forEach(function (subscriber) {
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try {
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subscriber.onWorkStarted(interactions, threadID);
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} catch (error) {
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if (!didCatchError) {
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didCatchError = true;
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caughtError = error;
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}
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}
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});
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if (didCatchError) {
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throw caughtError;
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}
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}
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function onWorkStopped(interactions, threadID) {
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var didCatchError = false;
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var caughtError = null;
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subscribers.forEach(function (subscriber) {
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try {
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subscriber.onWorkStopped(interactions, threadID);
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} catch (error) {
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if (!didCatchError) {
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didCatchError = true;
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caughtError = error;
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}
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}
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});
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if (didCatchError) {
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throw caughtError;
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}
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}
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function onWorkCanceled(interactions, threadID) {
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var didCatchError = false;
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var caughtError = null;
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subscribers.forEach(function (subscriber) {
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try {
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subscriber.onWorkCanceled(interactions, threadID);
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} catch (error) {
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if (!didCatchError) {
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didCatchError = true;
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caughtError = error;
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}
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}
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});
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if (didCatchError) {
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throw caughtError;
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}
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}
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exports.unstable_clear = unstable_clear;
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exports.unstable_getCurrent = unstable_getCurrent;
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exports.unstable_getThreadID = unstable_getThreadID;
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exports.unstable_subscribe = unstable_subscribe;
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exports.unstable_trace = unstable_trace;
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exports.unstable_unsubscribe = unstable_unsubscribe;
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exports.unstable_wrap = unstable_wrap;
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})();
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}
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