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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-28 14:29:10 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-28 14:29:10 +0000 |
commit | 2aa4a82499d4becd2284cdb482213d541b8804dd (patch) | |
tree | b80bf8bf13c3766139fbacc530efd0dd9d54394c /tools/profiler/core/ProfilerBacktrace.cpp | |
parent | Initial commit. (diff) | |
download | firefox-2aa4a82499d4becd2284cdb482213d541b8804dd.tar.xz firefox-2aa4a82499d4becd2284cdb482213d541b8804dd.zip |
Adding upstream version 86.0.1.upstream/86.0.1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tools/profiler/core/ProfilerBacktrace.cpp')
-rw-r--r-- | tools/profiler/core/ProfilerBacktrace.cpp | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/tools/profiler/core/ProfilerBacktrace.cpp b/tools/profiler/core/ProfilerBacktrace.cpp new file mode 100644 index 0000000000..02adb4e38f --- /dev/null +++ b/tools/profiler/core/ProfilerBacktrace.cpp @@ -0,0 +1,102 @@ +/* -*- Mode: C++; tab-width: 8; 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/. */ + +#include "ProfilerBacktrace.h" + +#include "ProfileBuffer.h" +#include "ProfiledThreadData.h" +#include "ThreadInfo.h" + +#include "mozilla/ProfileJSONWriter.h" + +ProfilerBacktrace::ProfilerBacktrace( + const char* aName, + mozilla::UniquePtr<mozilla::ProfileChunkedBuffer> + aProfileChunkedBufferStorage, + mozilla::UniquePtr<ProfileBuffer> + aProfileBufferStorageOrNull /* = nullptr */) + : mName(aName), + mOptionalProfileChunkedBufferStorage( + std::move(aProfileChunkedBufferStorage)), + mProfileChunkedBuffer(mOptionalProfileChunkedBufferStorage.get()), + mOptionalProfileBufferStorage(std::move(aProfileBufferStorageOrNull)), + mProfileBuffer(mOptionalProfileBufferStorage.get()) { + MOZ_COUNT_CTOR(ProfilerBacktrace); + if (mProfileBuffer) { + MOZ_RELEASE_ASSERT(mProfileChunkedBuffer, + "If we take ownership of a ProfileBuffer, we must also " + "receive ownership of a ProfileChunkedBuffer"); + MOZ_RELEASE_ASSERT( + mProfileChunkedBuffer == &mProfileBuffer->UnderlyingChunkedBuffer(), + "If we take ownership of a ProfileBuffer, we must also receive " + "ownership of its ProfileChunkedBuffer"); + } + MOZ_ASSERT( + !mProfileChunkedBuffer || !mProfileChunkedBuffer->IsThreadSafe(), + "ProfilerBacktrace only takes a non-thread-safe ProfileChunkedBuffer"); +} + +ProfilerBacktrace::ProfilerBacktrace( + const char* aName, + mozilla::ProfileChunkedBuffer* aExternalProfileChunkedBuffer, + ProfileBuffer* aExternalProfileBuffer) + : mName(aName), + mProfileChunkedBuffer(aExternalProfileChunkedBuffer), + mProfileBuffer(aExternalProfileBuffer) { + MOZ_COUNT_CTOR(ProfilerBacktrace); + if (!mProfileChunkedBuffer) { + if (mProfileBuffer) { + // We don't have a ProfileChunkedBuffer but we have a ProfileBuffer, use + // the latter's ProfileChunkedBuffer. + mProfileChunkedBuffer = &mProfileBuffer->UnderlyingChunkedBuffer(); + MOZ_ASSERT(!mProfileChunkedBuffer->IsThreadSafe(), + "ProfilerBacktrace only takes a non-thread-safe " + "ProfileChunkedBuffer"); + } + } else { + if (mProfileBuffer) { + MOZ_RELEASE_ASSERT( + mProfileChunkedBuffer == &mProfileBuffer->UnderlyingChunkedBuffer(), + "If we reference both ProfileChunkedBuffer and ProfileBuffer, they " + "must already be connected"); + } + MOZ_ASSERT(!mProfileChunkedBuffer->IsThreadSafe(), + "ProfilerBacktrace only takes a non-thread-safe " + "ProfileChunkedBuffer"); + } +} + +ProfilerBacktrace::~ProfilerBacktrace() { MOZ_COUNT_DTOR(ProfilerBacktrace); } + +int ProfilerBacktrace::StreamJSON(SpliceableJSONWriter& aWriter, + const mozilla::TimeStamp& aProcessStartTime, + UniqueStacks& aUniqueStacks) { + int processedThreadId = 0; + + // Unlike ProfiledThreadData::StreamJSON, we don't need to call + // ProfileBuffer::AddJITInfoForRange because ProfileBuffer does not contain + // any JitReturnAddr entries. For synchronous samples, JIT frames get expanded + // at sample time. + if (mProfileBuffer) { + processedThreadId = + StreamSamplesAndMarkers(mName.c_str(), 0, *mProfileBuffer, aWriter, + ""_ns, ""_ns, aProcessStartTime, + /* aRegisterTime */ mozilla::TimeStamp(), + /* aUnregisterTime */ mozilla::TimeStamp(), + /* aSinceTime */ 0, aUniqueStacks); + } else if (mProfileChunkedBuffer) { + ProfileBuffer profileBuffer(*mProfileChunkedBuffer); + processedThreadId = + StreamSamplesAndMarkers(mName.c_str(), 0, profileBuffer, aWriter, ""_ns, + ""_ns, aProcessStartTime, + /* aRegisterTime */ mozilla::TimeStamp(), + /* aUnregisterTime */ mozilla::TimeStamp(), + /* aSinceTime */ 0, aUniqueStacks); + } + // If there are no buffers, the backtrace is empty and nothing is streamed. + + return processedThreadId; +} |