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// Copyright (c) 2009 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
/**
* @fileoverview Provides communication interface to remote v8 profiler.
*/
goog.provide('devtools.ProfilerAgent');
/**
* @constructor
*/
devtools.ProfilerAgent = function() {
RemoteProfilerAgent.didGetActiveProfilerModules =
goog.bind(this.didGetActiveProfilerModules_, this);
RemoteProfilerAgent.didGetLogLines =
goog.bind(this.didGetLogLines_, this);
/**
* Active profiler modules flags.
* @type {number}
*/
this.activeProfilerModules_ =
devtools.ProfilerAgent.ProfilerModules.PROFILER_MODULE_NONE;
/**
* Interval for polling profiler state.
* @type {number}
*/
this.getActiveProfilerModulesInterval_ = null;
/**
* Profiler log position.
* @type {number}
*/
this.logPosition_ = 0;
/**
* Whether log contents retrieval must be forced next time.
* @type {boolean}
*/
this.forceGetLogLines_ = false;
/**
* Profiler processor instance.
* @type {devtools.profiler.Processor}
*/
this.profilerProcessor_ = new devtools.profiler.Processor();
};
/**
* A copy of enum from include/v8.h
* @enum {number}
*/
devtools.ProfilerAgent.ProfilerModules = {
PROFILER_MODULE_NONE: 0,
PROFILER_MODULE_CPU: 1,
PROFILER_MODULE_HEAP_STATS: 1 << 1,
PROFILER_MODULE_JS_CONSTRUCTORS: 1 << 2,
PROFILER_MODULE_HEAP_SNAPSHOT: 1 << 16
};
/**
* Sets up callbacks that deal with profiles processing.
*/
devtools.ProfilerAgent.prototype.setupProfilerProcessorCallbacks = function() {
// A temporary icon indicating that the profile is being processed.
var processingIcon = new WebInspector.SidebarTreeElement(
'profile-sidebar-tree-item',
WebInspector.UIString('Processing...'),
'', null, false);
var profilesSidebar = WebInspector.panels.profiles.getProfileType(
WebInspector.CPUProfileType.TypeId).treeElement;
this.profilerProcessor_.setCallbacks(
function onProfileProcessingStarted() {
// Set visually empty string. Subtitle hiding is done via styles
// manipulation which doesn't play well with dynamic append / removal.
processingIcon.subtitle = ' ';
profilesSidebar.appendChild(processingIcon);
},
function onProfileProcessingStatus(ticksCount) {
processingIcon.subtitle =
WebInspector.UIString('%d ticks processed', ticksCount);
},
function onProfileProcessingFinished(profile) {
profilesSidebar.removeChild(processingIcon);
profile.typeId = WebInspector.CPUProfileType.TypeId;
InspectorBackend.addFullProfile(profile);
WebInspector.addProfileHeader(profile);
// If no profile is currently shown, show the new one.
var profilesPanel = WebInspector.panels.profiles;
if (!profilesPanel.visibleView) {
profilesPanel.showProfile(profile);
}
}
);
};
/**
* Initializes profiling state.
*/
devtools.ProfilerAgent.prototype.initializeProfiling = function() {
this.setupProfilerProcessorCallbacks();
this.forceGetLogLines_ = true;
this.getActiveProfilerModulesInterval_ = setInterval(
function() { RemoteProfilerAgent.getActiveProfilerModules(); }, 1000);
};
/**
* Starts profiling.
* @param {number} modules List of modules to enable.
*/
devtools.ProfilerAgent.prototype.startProfiling = function(modules) {
var cmd = new devtools.DebugCommand('profile', {
'modules': modules,
'command': 'resume'});
devtools.DebuggerAgent.sendCommand_(cmd);
RemoteToolsAgent.executeVoidJavaScript();
if (modules &
devtools.ProfilerAgent.ProfilerModules.PROFILER_MODULE_HEAP_SNAPSHOT) {
var pos = this.logPosition_;
// Active modules will not change, instead, a snapshot will be logged.
setTimeout(function() { RemoteProfilerAgent.getLogLines(pos); }, 500);
}
};
/**
* Stops profiling.
*/
devtools.ProfilerAgent.prototype.stopProfiling = function(modules) {
var cmd = new devtools.DebugCommand('profile', {
'modules': modules,
'command': 'pause'});
devtools.DebuggerAgent.sendCommand_(cmd);
RemoteToolsAgent.executeVoidJavaScript();
};
/**
* Handles current profiler status.
* @param {number} modules List of active (started) modules.
*/
devtools.ProfilerAgent.prototype.didGetActiveProfilerModules_ = function(
modules) {
var profModules = devtools.ProfilerAgent.ProfilerModules;
var profModuleNone = profModules.PROFILER_MODULE_NONE;
if (this.forceGetLogLines_ ||
(modules != profModuleNone &&
this.activeProfilerModules_ == profModuleNone)) {
this.forceGetLogLines_ = false;
// Start to query log data.
RemoteProfilerAgent.getLogLines(this.logPosition_);
}
this.activeProfilerModules_ = modules;
// Update buttons.
WebInspector.setRecordingProfile(modules & profModules.PROFILER_MODULE_CPU);
};
/**
* Handles a portion of a profiler log retrieved by getLogLines call.
* @param {number} pos Current position in log.
* @param {string} log A portion of profiler log.
*/
devtools.ProfilerAgent.prototype.didGetLogLines_ = function(pos, log) {
this.logPosition_ = pos;
if (log.length > 0) {
this.profilerProcessor_.processLogChunk(log);
} else if (this.activeProfilerModules_ ==
devtools.ProfilerAgent.ProfilerModules.PROFILER_MODULE_NONE) {
// No new data and profiling is stopped---suspend log reading.
return;
}
setTimeout(function() { RemoteProfilerAgent.getLogLines(pos); }, 500);
};
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