/* 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/. */
// The Gecko Profiler is an always-on profiler that takes fast and low overhead
// samples of the program execution using only userspace functionality for
// portability. The goal of this module is to provide performance data in a
// generic cross-platform way without requiring custom tools or kernel support.
//
// Samples are collected to form a timeline with optional timeline event
// (markers) used for filtering. The samples include both native stacks and
// platform-independent "label stack" frames.
#ifndef ProfileAdditionalInformation_h
#define ProfileAdditionalInformation_h
#include "js/Value.h"
#include "js/Utility.h"
#include "js/ProfilingSources.h"
#include "mozilla/SharedLibraries.h"
#include "nsString.h"
#include "nsTArray.h"
namespace IPC {
class MessageReader;
class MessageWriter;
template <typename T>
struct ParamTraits;
}
// namespace IPC
namespace mozilla {
// Entry pairing ID strings with JS source data for WebChannel requests
struct JSSourceEntry {
nsCString id;
ProfilerJSSourceData sourceData;
JSSourceEntry() =
default;
JSSourceEntry(nsCString&& aId, ProfilerJSSourceData&& aSourceData)
: id(std::move(aId)), sourceData(std::move(aSourceData)) {}
size_t
SizeOf()
const {
return id.Length() + sourceData.
SizeOf(); }
};
// This structure contains additional information gathered while generating the
// profile json and iterating the buffer.
struct ProfileGenerationAdditionalInformation {
ProfileGenerationAdditionalInformation() =
default;
explicit ProfileGenerationAdditionalInformation(
SharedLibraryInfo&& aSharedLibraries,
nsTArray<JSSourceEntry>&& aJSSourceEntries)
: mSharedLibraries(std::move(aSharedLibraries)),
mJSSourceEntries(std::move(aJSSourceEntries)) {}
size_t
SizeOf()
const {
size_t size = mSharedLibraries.
SizeOf();
for (
const auto& entry : mJSSourceEntries) {
size += entry.
SizeOf();
}
return size;
}
ProfileGenerationAdditionalInformation(
const ProfileGenerationAdditionalInformation& other) =
delete;
ProfileGenerationAdditionalInformation&
operator=(
const ProfileGenerationAdditionalInformation&) =
delete;
ProfileGenerationAdditionalInformation(
ProfileGenerationAdditionalInformation&& other) =
default;
ProfileGenerationAdditionalInformation&
operator=(
ProfileGenerationAdditionalInformation&& other) =
default;
void Append(ProfileGenerationAdditionalInformation&& aOther) {
mSharedLibraries.AddAllSharedLibraries(aOther.mSharedLibraries);
mJSSourceEntries.AppendElements(std::move(aOther.mJSSourceEntries));
}
void FinishGathering() { mSharedLibraries.DeduplicateEntries(); }
void ToJSValue(JSContext* aCx, JS::MutableHandle<JS::Value> aRetVal)
const;
friend IPC::ParamTraits<mozilla::ProfileGenerationAdditionalInformation>;
private:
JSString* MaybeCreateJSStringFromSourceData(
JSContext* aCx,
const ProfilerJSSourceData& aSourceData)
const;
SharedLibraryInfo mSharedLibraries;
nsTArray<JSSourceEntry> mJSSourceEntries;
};
struct ProfileAndAdditionalInformation {
ProfileAndAdditionalInformation() =
default;
explicit ProfileAndAdditionalInformation(nsCString&& aProfile)
: mProfile(std::move(aProfile)) {}
ProfileAndAdditionalInformation(
nsCString&& aProfile,
ProfileGenerationAdditionalInformation&& aAdditionalInformation)
: mProfile(std::move(aProfile)),
mAdditionalInformation(Some(std::move(aAdditionalInformation))) {}
ProfileAndAdditionalInformation(
const ProfileAndAdditionalInformation&) =
delete;
ProfileAndAdditionalInformation&
operator=(
const ProfileAndAdditionalInformation&) =
delete;
ProfileAndAdditionalInformation(ProfileAndAdditionalInformation&&) =
default;
ProfileAndAdditionalInformation&
operator=(
ProfileAndAdditionalInformation&&) =
default;
size_t
SizeOf()
const {
size_t size = mProfile.Length();
if (mAdditionalInformation.isSome()) {
size += mAdditionalInformation->
SizeOf();
}
return size;
}
nsCString mProfile;
Maybe<ProfileGenerationAdditionalInformation> mAdditionalInformation;
};
}
// namespace mozilla
namespace IPC {
template <>
struct ParamTraits<mozilla::ProfileGenerationAdditionalInformation> {
typedef mozilla::ProfileGenerationAdditionalInformation paramType;
static void Write(MessageWriter* aWriter,
const paramType& aParam);
static bool Read(MessageReader* aReader, paramType* aResult);
};
template <>
struct ParamTraits<mozilla::ProfileAndAdditionalInformation> {
typedef mozilla::ProfileAndAdditionalInformation paramType;
static void Write(MessageWriter* aWriter,
const paramType& aParam);
static bool Read(MessageReader* aReader, paramType* aResult);
};
}
// namespace IPC
#endif // ProfileAdditionalInformation_h