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diff --git a/src/perf-jit.h b/src/perf-jit.h |
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+// 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); |
+ |
+ 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_; |
+ void* marker_address_; |
+}; |
+ |
+#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 |