| // Copyright 2014 the V8 project authors. All rights reserved. |
| // Redistribution and use in source and binary forms, with or without |
| // modification, are permitted provided that the following conditions are |
| // met: |
| // |
| // * Redistributions of source code must retain the above copyright |
| // notice, this list of conditions and the following disclaimer. |
| // * Redistributions in binary form must reproduce the above |
| // copyright notice, this list of conditions and the following |
| // disclaimer in the documentation and/or other materials provided |
| // with the distribution. |
| // * Neither the name of Google Inc. nor the names of its |
| // contributors may be used to endorse or promote products derived |
| // from this software without specific prior written permission. |
| // |
| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| #ifndef V8_PERF_JIT_H_ |
| #define V8_PERF_JIT_H_ |
| |
| #include "src/v8.h" |
| |
| namespace v8 { |
| namespace internal { |
| |
| // TODO(jarin) For now, we disable perf integration on Android because of a |
| // build problem - when building the snapshot with AOSP, librt is not |
| // available, so we cannot use the clock_gettime function. To fix this, we |
| // should thread through the V8_LIBRT_NOT_AVAILABLE flag here and only disable |
| // the perf integration when this flag is present (the perf integration is not |
| // needed when generating snapshot, so it is fine to ifdef it away). |
| |
| #if V8_OS_LINUX |
| |
| // Linux perf tool logging support |
| class PerfJitLogger : public CodeEventLogger { |
| public: |
| PerfJitLogger(); |
| virtual ~PerfJitLogger(); |
| |
| virtual void CodeMoveEvent(Address from, Address to); |
| virtual void CodeDeleteEvent(Address from); |
| virtual void CodeDisableOptEvent(Code* code, SharedFunctionInfo* shared) {} |
| virtual void SnapshotPositionEvent(Address addr, int pos); |
| |
| private: |
| uint64_t GetTimestamp(); |
| virtual void LogRecordedBuffer(Code* code, SharedFunctionInfo* shared, |
| const char* name, int length); |
| |
| // Extension added to V8 log file name to get the low-level log name. |
| static const char kFilenameFormatString[]; |
| static const int kFilenameBufferPadding; |
| |
| // File buffer size of the low-level log. We don't use the default to |
| // minimize the associated overhead. |
| static const int kLogBufferSize = 2 * MB; |
| |
| void LogWriteBytes(const char* bytes, int size); |
| void LogWriteHeader(); |
| |
| static const uint32_t kElfMachIA32 = 3; |
| static const uint32_t kElfMachX64 = 62; |
| static const uint32_t kElfMachARM = 40; |
| static const uint32_t kElfMachMIPS = 10; |
| |
| uint32_t GetElfMach() { |
| #if V8_TARGET_ARCH_IA32 |
| return kElfMachIA32; |
| #elif V8_TARGET_ARCH_X64 |
| return kElfMachX64; |
| #elif V8_TARGET_ARCH_ARM |
| return kElfMachARM; |
| #elif V8_TARGET_ARCH_MIPS |
| return kElfMachMIPS; |
| #else |
| UNIMPLEMENTED(); |
| return 0; |
| #endif |
| } |
| |
| FILE* perf_output_handle_; |
| uint64_t code_index_; |
| }; |
| |
| #else |
| |
| // PerfJitLogger is only implemented on Linux |
| class PerfJitLogger : public CodeEventLogger { |
| public: |
| virtual void CodeMoveEvent(Address from, Address to) { UNIMPLEMENTED(); } |
| |
| virtual void CodeDeleteEvent(Address from) { UNIMPLEMENTED(); } |
| |
| virtual void CodeDisableOptEvent(Code* code, SharedFunctionInfo* shared) { |
| UNIMPLEMENTED(); |
| } |
| |
| virtual void SnapshotPositionEvent(Address addr, int pos) { UNIMPLEMENTED(); } |
| |
| virtual void LogRecordedBuffer(Code* code, SharedFunctionInfo* shared, |
| const char* name, int length) { |
| UNIMPLEMENTED(); |
| } |
| }; |
| |
| #endif // V8_OS_LINUX |
| } |
| } // namespace v8::internal |
| #endif |