| // Copyright 2016 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/log.h" |
| |
| namespace v8 { |
| namespace internal { |
| |
| #if V8_OS_LINUX |
| |
| // Linux perf tool logging support |
| class PerfJitLogger : public CodeEventLogger { |
| public: |
| PerfJitLogger(); |
| virtual ~PerfJitLogger(); |
| |
| void CodeMoveEvent(AbstractCode* from, Address to) override; |
| void CodeDisableOptEvent(AbstractCode* code, |
| SharedFunctionInfo* shared) override {} |
| |
| private: |
| void OpenJitDumpFile(); |
| void CloseJitDumpFile(); |
| void* OpenMarkerFile(int fd); |
| void CloseMarkerFile(void* marker_address); |
| |
| uint64_t GetTimestamp(); |
| void LogRecordedBuffer(AbstractCode* code, SharedFunctionInfo* shared, |
| const char* name, int length) override; |
| |
| // 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(); |
| void LogWriteDebugInfo(Code* code, SharedFunctionInfo* shared); |
| void LogWriteUnwindingInfo(Code* code); |
| |
| static const uint32_t kElfMachIA32 = 3; |
| static const uint32_t kElfMachX64 = 62; |
| static const uint32_t kElfMachARM = 40; |
| static const uint32_t kElfMachMIPS = 10; |
| static const uint32_t kElfMachARM64 = 183; |
| |
| 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; |
| #elif V8_TARGET_ARCH_ARM64 |
| return kElfMachARM64; |
| #else |
| UNIMPLEMENTED(); |
| return 0; |
| #endif |
| } |
| |
| #if V8_TARGET_ARCH_32_BIT |
| static const int kElfHeaderSize = 0x34; |
| #elif V8_TARGET_ARCH_64_BIT |
| static const int kElfHeaderSize = 0x40; |
| #else |
| #error Unknown target architecture pointer size |
| #endif |
| |
| // Per-process singleton file. We assume that there is one main isolate; |
| // to determine when it goes away, we keep reference count. |
| static base::LazyRecursiveMutex file_mutex_; |
| static FILE* perf_output_handle_; |
| static uint64_t reference_count_; |
| static void* marker_address_; |
| static uint64_t code_index_; |
| }; |
| |
| #else |
| |
| // PerfJitLogger is only implemented on Linux |
| class PerfJitLogger : public CodeEventLogger { |
| public: |
| void CodeMoveEvent(AbstractCode* from, Address to) override { |
| UNIMPLEMENTED(); |
| } |
| |
| void CodeDisableOptEvent(AbstractCode* code, |
| SharedFunctionInfo* shared) override { |
| UNIMPLEMENTED(); |
| } |
| |
| void LogRecordedBuffer(AbstractCode* code, SharedFunctionInfo* shared, |
| const char* name, int length) override { |
| UNIMPLEMENTED(); |
| } |
| }; |
| |
| #endif // V8_OS_LINUX |
| } // namespace internal |
| } // namespace v8 |
| #endif |