betajs/betajs-debug

Scoped.define("module:Profiler", [
    "module:Hooks",
    "module:Timing"
], function (Hooks, Timing) {
    return {
        
        createProfile: function () {
            return {
                
                _entered: 0,
                _suspended: 0,
                _time: 0,
                _startTime: 0,
                
                _totalEnterCount: 0,
                _enterCount: 0,
                
                enter: function () {
                    this._totalEnterCount++;
                    this._entered++;
                    if (this._entered === 1 && this._suspended < 1) {
                        this._startTime = Timing.now();
                        this._enterCount++;
                    }
                },
                
                leave: function () {
                    this._entered--;
                    if (this._entered === 0 && this._suspended < 1)
                        this._time += Timing.now() - this._startTime;
                },
                
                suspend: function () {
                    this._suspended++;
                    if (this._entered > 0 && this._suspended === 1)
                        this._time += Timing.now() - this._startTime;
                },
                
                resume: function () {
                    this._suspended--;
                    if (this._entered > 0 && this._suspended === 0)
                        this._startTime = Timing.now();
                },
                
                time: function () {
                    return this._entered > 0 && this._suspended < 1 ? Timing.now() - this._startTime + this._time : this._time;
                },
                
                profile: function () {
                    return {
                        time: this.time(),
                        totalEnterCount: this._totalEnterCount,
                        enterCount: this._enterCount
                    };
                }
                
            };
        },
        
        profilePrototypes: function (includedPrototypes, excludedPrototypes) {
            var profile = this.createProfile();
            for (var i = 0; i < includedPrototypes.length; ++i)
                Hooks.hookPrototypeMethods(includedPrototypes[i], profile.enter, profile.leave, profile);
            for (var e = 0; e < excludedPrototypes.length; ++e)
                Hooks.hookPrototypeMethods(excludedPrototypes[e], profile.suspend, profile.resume, profile);
            return profile;    
        },
        
        profileMethod: function (method, context) {
            var profile = this.createProfile();
            return {
                profile: profile,
                hook: Hooks.hookMethod(method, context, profile.enter, profile.leave, profile)
            };
        },
        
        profilePrototypeMethod: function (method, cls) {
            var profile = this.createProfile();
            return {
                profile: profile,
                hook: Hooks.hookPrototypeMethod(method, cls, profile.enter, profile.leave, profile)
            };
        }

    };
});