| // Copyright 2014, ARM Limited |
| // 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 ARM Limited 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 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 VIXL_A64_INSTRUMENT_A64_H_ |
| #define VIXL_A64_INSTRUMENT_A64_H_ |
| |
| #include "mozilla/Vector.h" |
| |
| #include "jsalloc.h" |
| |
| #include "jit/arm64/vixl/Constants-vixl.h" |
| #include "jit/arm64/vixl/Decoder-vixl.h" |
| #include "jit/arm64/vixl/Globals-vixl.h" |
| #include "jit/arm64/vixl/Utils-vixl.h" |
| |
| namespace vixl { |
| |
| const int kCounterNameMaxLength = 256; |
| const uint64_t kDefaultInstrumentationSamplingPeriod = 1 << 22; |
| |
| |
| enum InstrumentState { |
| InstrumentStateDisable = 0, |
| InstrumentStateEnable = 1 |
| }; |
| |
| |
| enum CounterType { |
| Gauge = 0, // Gauge counters reset themselves after reading. |
| Cumulative = 1 // Cumulative counters keep their value after reading. |
| }; |
| |
| |
| class Counter { |
| public: |
| explicit Counter(const char* name, CounterType type = Gauge); |
| |
| void Increment(); |
| void Enable(); |
| void Disable(); |
| bool IsEnabled(); |
| uint64_t count(); |
| const char* name(); |
| CounterType type(); |
| |
| private: |
| char name_[kCounterNameMaxLength]; |
| uint64_t count_; |
| bool enabled_; |
| CounterType type_; |
| }; |
| |
| |
| class Instrument: public DecoderVisitor { |
| public: |
| explicit Instrument(const char* datafile = NULL, |
| uint64_t sample_period = kDefaultInstrumentationSamplingPeriod); |
| ~Instrument(); |
| |
| void Enable(); |
| void Disable(); |
| |
| // Declare all Visitor functions. |
| #define DECLARE(A) void Visit##A(const Instruction* instr); |
| VISITOR_LIST(DECLARE) |
| #undef DECLARE |
| |
| private: |
| void Update(); |
| void DumpCounters(); |
| void DumpCounterNames(); |
| void DumpEventMarker(unsigned marker); |
| void HandleInstrumentationEvent(unsigned event); |
| Counter* GetCounter(const char* name); |
| |
| void InstrumentLoadStore(const Instruction* instr); |
| void InstrumentLoadStorePair(const Instruction* instr); |
| |
| mozilla::Vector<Counter*, 8, js::SystemAllocPolicy> counters_; |
| |
| FILE *output_stream_; |
| uint64_t sample_period_; |
| }; |
| |
| } // namespace vixl |
| |
| #endif // VIXL_A64_INSTRUMENT_A64_H_ |