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| 1 // Copyright 2014 the V8 project authors. All rights reserved. | |
| 2 // Redistribution and use in source and binary forms, with or without | |
| 3 // modification, are permitted provided that the following conditions are | |
| 4 // met: | |
| 5 // | |
| 6 // * Redistributions of source code must retain the above copyright | |
| 7 // notice, this list of conditions and the following disclaimer. | |
| 8 // * Redistributions in binary form must reproduce the above | |
| 9 // copyright notice, this list of conditions and the following | |
| 10 // disclaimer in the documentation and/or other materials provided | |
| 11 // with the distribution. | |
| 12 // * Neither the name of Google Inc. nor the names of its | |
| 13 // contributors may be used to endorse or promote products derived | |
| 14 // from this software without specific prior written permission. | |
| 15 // | |
| 16 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
| 17 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
| 18 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
| 19 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
| 20 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
| 21 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
| 22 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
| 23 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
| 24 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 25 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
| 26 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 27 | |
| 28 #ifndef V8_PERF_JIT_H_ | |
| 29 #define V8_PERF_JIT_H_ | |
| 30 | |
| 31 #include "src/v8.h" | |
| 32 | |
| 33 namespace v8 { | |
| 34 namespace internal { | |
| 35 | |
| 36 #if V8_OS_LINUX | |
| 37 | |
| 38 // Linux perf tool logging support | |
| 39 class PerfJitLogger : public CodeEventLogger { | |
| 40 public: | |
| 41 PerfJitLogger(); | |
| 42 virtual ~PerfJitLogger(); | |
| 43 | |
| 44 virtual void CodeMoveEvent(Address from, Address to); | |
| 45 virtual void CodeDeleteEvent(Address from); | |
| 46 virtual void CodeDisableOptEvent(Code* code, SharedFunctionInfo* shared) {} | |
| 47 virtual void SnapshotPositionEvent(Address addr, int pos); | |
| 48 | |
| 49 private: | |
| 50 uint64_t GetTimestamp(); | |
| 51 virtual void LogRecordedBuffer(Code* code, SharedFunctionInfo* shared, | |
| 52 const char* name, int length); | |
| 53 | |
| 54 // Extension added to V8 log file name to get the low-level log name. | |
| 55 static const char kFilenameFormatString[]; | |
| 56 static const int kFilenameBufferPadding; | |
| 57 | |
| 58 // File buffer size of the low-level log. We don't use the default to | |
| 59 // minimize the associated overhead. | |
| 60 static const int kLogBufferSize = 2 * MB; | |
| 61 | |
| 62 void LogWriteBytes(const char* bytes, int size); | |
| 63 void LogWriteHeader(); | |
| 64 | |
| 65 static const uint32_t kElfMachIA32 = 3; | |
| 66 static const uint32_t kElfMachX64 = 62; | |
| 67 static const uint32_t kElfMachARM = 40; | |
| 68 static const uint32_t kElfMachMIPS = 10; | |
| 69 | |
| 70 uint32_t GetElfMach() { | |
| 71 #if V8_TARGET_ARCH_IA32 | |
| 72 return kElfMachIA32; | |
| 73 #elif V8_TARGET_ARCH_X64 | |
| 74 return kElfMachX64; | |
| 75 #elif V8_TARGET_ARCH_ARM | |
| 76 return kElfMachARM; | |
| 77 #elif V8_TARGET_ARCH_MIPS | |
| 78 return kElfMachMIPS; | |
| 79 #else | |
| 80 UNIMPLEMENTED(); | |
| 81 return 0; | |
| 82 #endif | |
| 83 } | |
| 84 | |
| 85 FILE* perf_output_handle_; | |
| 86 uint64_t code_index_; | |
| 87 }; | |
| 88 | |
| 89 #else | |
| 90 | |
| 91 // PerfJitLogger is only implemented on Linux | |
| 92 class PerfJitLogger : public CodeEventLogger { | |
| 93 public: | |
| 94 virtual void CodeMoveEvent(Address from, Address to) { UNIMPLEMENTED(); } | |
| 95 | |
| 96 virtual void CodeDeleteEvent(Address from) { UNIMPLEMENTED(); } | |
| 97 | |
| 98 virtual void CodeDisableOptEvent(Code* code, SharedFunctionInfo* shared) { | |
| 99 UNIMPLEMENTED(); | |
| 100 } | |
| 101 | |
| 102 virtual void SnapshotPositionEvent(Address addr, int pos) { UNIMPLEMENTED(); } | |
| 103 | |
| 104 virtual void LogRecordedBuffer(Code* code, SharedFunctionInfo* shared, | |
| 105 const char* name, int length) { | |
| 106 UNIMPLEMENTED(); | |
| 107 } | |
| 108 }; | |
| 109 | |
| 110 #endif // V8_OS_LINUX | |
| 111 } | |
| 112 } // namespace v8::internal | |
| 113 #endif | |
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Chromium Code Reviews
Issue 1148293009:
Remove the experimental perf jit support until the license is clarified. (Closed)
Base URL: https://chromium.googlesource.com/v8/v8.git@master