// 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