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