gecko-dev/tools/profiler/ProfileEntry.h
Benoit Girard 3696e2adc6 Bug 918825 - Add frame duration marker. r=ehsan
--HG--
extra : rebase_source : 25f51e88ee75f47eea51bcc94a7b60f31b9605af
2013-09-27 12:08:45 -04:00

118 lines
3.9 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef MOZ_PROFILE_ENTRY_H
#define MOZ_PROFILE_ENTRY_H
#include <ostream>
#include "GeckoProfiler.h"
#include "platform.h"
#include "ProfilerBacktrace.h"
#include "mozilla/Mutex.h"
class ThreadProfile;
class ProfileEntry
{
public:
ProfileEntry();
// aTagData must not need release (i.e. be a string from the text segment)
ProfileEntry(char aTagName, const char *aTagData);
ProfileEntry(char aTagName, void *aTagPtr);
ProfileEntry(char aTagName, ProfilerMarker *aTagMarker);
ProfileEntry(char aTagName, double aTagFloat);
ProfileEntry(char aTagName, uintptr_t aTagOffset);
ProfileEntry(char aTagName, Address aTagAddress);
ProfileEntry(char aTagName, int aTagLine);
ProfileEntry(char aTagName, char aTagChar);
friend std::ostream& operator<<(std::ostream& stream, const ProfileEntry& entry);
bool is_ent_hint(char hintChar);
bool is_ent_hint();
bool is_ent(char tagName);
void* get_tagPtr();
void log();
const ProfilerMarker* getMarker() {
MOZ_ASSERT(mTagName == 'm');
return mTagMarker;
}
char getTagName() const { return mTagName; }
private:
friend class ThreadProfile;
union {
const char* mTagData;
char mTagChars[sizeof(void*)];
void* mTagPtr;
ProfilerMarker* mTagMarker;
double mTagFloat;
Address mTagAddress;
uintptr_t mTagOffset;
int mTagLine;
char mTagChar;
};
char mTagName;
};
typedef void (*IterateTagsCallback)(const ProfileEntry& entry, const char* tagStringData);
class ThreadProfile
{
public:
ThreadProfile(const char* aName, int aEntrySize, PseudoStack *aStack,
Thread::tid_t aThreadId, PlatformData* aPlatformData,
bool aIsMainThread, void *aStackTop);
virtual ~ThreadProfile();
void addTag(ProfileEntry aTag);
void flush();
void erase();
char* processDynamicTag(int readPos, int* tagsConsumed, char* tagBuff);
void IterateTags(IterateTagsCallback aCallback);
friend std::ostream& operator<<(std::ostream& stream,
const ThreadProfile& profile);
void ToStreamAsJSON(std::ostream& stream);
JSObject *ToJSObject(JSContext *aCx);
PseudoStack* GetPseudoStack();
mozilla::Mutex* GetMutex();
template <typename Builder> void BuildJSObject(Builder& b, typename Builder::ObjectHandle profile);
void BeginUnwind();
virtual void EndUnwind();
virtual SyncProfile* AsSyncProfile() { return nullptr; }
bool IsMainThread() const { return mIsMainThread; }
const char* Name() const { return mName; }
Thread::tid_t ThreadId() const { return mThreadId; }
PlatformData* GetPlatformData() { return mPlatformData; }
int GetGenerationID() const { return mGeneration; }
bool HasGenerationExpired(int aGenID) {
return aGenID + 2 <= mGeneration;
}
void* GetStackTop() const { return mStackTop; }
private:
// Circular buffer 'Keep One Slot Open' implementation
// for simplicity
ProfileEntry* mEntries;
int mWritePos; // points to the next entry we will write to
int mLastFlushPos; // points to the next entry since the last flush()
int mReadPos; // points to the next entry we will read to
int mEntrySize;
PseudoStack* mPseudoStack;
mozilla::Mutex mMutex;
char* mName;
Thread::tid_t mThreadId;
bool mIsMainThread;
PlatformData* mPlatformData; // Platform specific data.
int mGeneration;
int mPendingGenerationFlush;
void* const mStackTop;
};
std::ostream& operator<<(std::ostream& stream, const ThreadProfile& profile);
#endif /* ndef MOZ_PROFILE_ENTRY_H */