Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 1 | // Copyright 2016 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/log.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 | void CodeMoveEvent(AbstractCode* from, Address to) override; |
| 45 | void CodeDisableOptEvent(AbstractCode* code, |
| 46 | SharedFunctionInfo* shared) override {} |
| 47 | |
| 48 | private: |
| 49 | void OpenJitDumpFile(); |
| 50 | void CloseJitDumpFile(); |
| 51 | void* OpenMarkerFile(int fd); |
| 52 | void CloseMarkerFile(void* marker_address); |
| 53 | |
| 54 | uint64_t GetTimestamp(); |
| 55 | void LogRecordedBuffer(AbstractCode* code, SharedFunctionInfo* shared, |
| 56 | const char* name, int length) override; |
| 57 | |
| 58 | // Extension added to V8 log file name to get the low-level log name. |
| 59 | static const char kFilenameFormatString[]; |
| 60 | static const int kFilenameBufferPadding; |
| 61 | |
| 62 | // File buffer size of the low-level log. We don't use the default to |
| 63 | // minimize the associated overhead. |
| 64 | static const int kLogBufferSize = 2 * MB; |
| 65 | |
| 66 | void LogWriteBytes(const char* bytes, int size); |
| 67 | void LogWriteHeader(); |
| 68 | void LogWriteDebugInfo(Code* code, SharedFunctionInfo* shared); |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 69 | void LogWriteUnwindingInfo(Code* code); |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 70 | |
| 71 | static const uint32_t kElfMachIA32 = 3; |
| 72 | static const uint32_t kElfMachX64 = 62; |
| 73 | static const uint32_t kElfMachARM = 40; |
| 74 | static const uint32_t kElfMachMIPS = 10; |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 75 | static const uint32_t kElfMachARM64 = 183; |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 76 | |
| 77 | uint32_t GetElfMach() { |
| 78 | #if V8_TARGET_ARCH_IA32 |
| 79 | return kElfMachIA32; |
| 80 | #elif V8_TARGET_ARCH_X64 |
| 81 | return kElfMachX64; |
| 82 | #elif V8_TARGET_ARCH_ARM |
| 83 | return kElfMachARM; |
| 84 | #elif V8_TARGET_ARCH_MIPS |
| 85 | return kElfMachMIPS; |
Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 86 | #elif V8_TARGET_ARCH_ARM64 |
| 87 | return kElfMachARM64; |
Ben Murdoch | da12d29 | 2016-06-02 14:46:10 +0100 | [diff] [blame] | 88 | #else |
| 89 | UNIMPLEMENTED(); |
| 90 | return 0; |
| 91 | #endif |
| 92 | } |
| 93 | |
| 94 | // Per-process singleton file. We assume that there is one main isolate; |
| 95 | // to determine when it goes away, we keep reference count. |
| 96 | static base::LazyRecursiveMutex file_mutex_; |
| 97 | static FILE* perf_output_handle_; |
| 98 | static uint64_t reference_count_; |
| 99 | static void* marker_address_; |
| 100 | static uint64_t code_index_; |
| 101 | }; |
| 102 | |
| 103 | #else |
| 104 | |
| 105 | // PerfJitLogger is only implemented on Linux |
| 106 | class PerfJitLogger : public CodeEventLogger { |
| 107 | public: |
| 108 | void CodeMoveEvent(AbstractCode* from, Address to) override { |
| 109 | UNIMPLEMENTED(); |
| 110 | } |
| 111 | |
| 112 | void CodeDisableOptEvent(AbstractCode* code, |
| 113 | SharedFunctionInfo* shared) override { |
| 114 | UNIMPLEMENTED(); |
| 115 | } |
| 116 | |
| 117 | void LogRecordedBuffer(AbstractCode* code, SharedFunctionInfo* shared, |
| 118 | const char* name, int length) override { |
| 119 | UNIMPLEMENTED(); |
| 120 | } |
| 121 | }; |
| 122 | |
| 123 | #endif // V8_OS_LINUX |
| 124 | } // namespace internal |
| 125 | } // namespace v8 |
| 126 | #endif |