// 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: explicit PerfJitLogger(Isolate* isolate); ~PerfJitLogger() override; void CodeMoveEvent(AbstractCode from, AbstractCode 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; void LogRecordedBuffer(const wasm::WasmCode* code, 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 WriteJitCodeLoadEntry(const uint8_t* code_pointer, uint32_t code_size, const char* name, int name_length); 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: explicit PerfJitLogger(Isolate* isolate) : CodeEventLogger(isolate) {} void CodeMoveEvent(AbstractCode from, AbstractCode to) override { UNIMPLEMENTED(); } void CodeDisableOptEvent(AbstractCode code, SharedFunctionInfo shared) override { UNIMPLEMENTED(); } void LogRecordedBuffer(AbstractCode code, SharedFunctionInfo shared, const char* name, int length) override { UNIMPLEMENTED(); } void LogRecordedBuffer(const wasm::WasmCode* code, const char* name, int length) override { UNIMPLEMENTED(); } }; #endif // V8_OS_LINUX } // namespace internal } // namespace v8 #endif // V8_PERF_JIT_H_