118 lines
3.7 KiB
C++
118 lines
3.7 KiB
C++
// Copyright 2014, VIXL authors
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are met:
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//
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// * Redistributions of source code must retain the above copyright notice,
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// this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above copyright notice,
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// this list of conditions and the following disclaimer in the documentation
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// and/or other materials provided with the distribution.
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// * Neither the name of ARM Limited nor the names of its contributors may be
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// used to endorse or promote products derived from this software without
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// specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS CONTRIBUTORS "AS IS" AND
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// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
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// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#ifndef VIXL_AARCH64_INSTRUMENT_AARCH64_H_
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#define VIXL_AARCH64_INSTRUMENT_AARCH64_H_
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#include "../globals-vixl.h"
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#include "../utils-vixl.h"
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#include "constants-aarch64.h"
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#include "decoder-aarch64.h"
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#include "instrument-aarch64.h"
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namespace vixl {
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namespace aarch64 {
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const int kCounterNameMaxLength = 256;
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const uint64_t kDefaultInstrumentationSamplingPeriod = 1 << 22;
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enum InstrumentState { InstrumentStateDisable = 0, InstrumentStateEnable = 1 };
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enum CounterType {
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Gauge = 0, // Gauge counters reset themselves after reading.
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Cumulative = 1 // Cumulative counters keep their value after reading.
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};
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class Counter {
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public:
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explicit Counter(const char* name, CounterType type = Gauge);
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void Increment();
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void Enable();
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void Disable();
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bool IsEnabled();
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uint64_t GetCount();
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VIXL_DEPRECATED("GetCount", uint64_t count()) { return GetCount(); }
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const char* GetName();
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VIXL_DEPRECATED("GetName", const char* name()) { return GetName(); }
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CounterType GetType();
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VIXL_DEPRECATED("GetType", CounterType type()) { return GetType(); }
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private:
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char name_[kCounterNameMaxLength];
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uint64_t count_;
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bool enabled_;
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CounterType type_;
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};
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class Instrument : public DecoderVisitor {
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public:
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explicit Instrument(
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const char* datafile = NULL,
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uint64_t sample_period = kDefaultInstrumentationSamplingPeriod);
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~Instrument();
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void Enable();
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void Disable();
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// Declare all Visitor functions.
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#define DECLARE(A) void Visit##A(const Instruction* instr) VIXL_OVERRIDE;
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VISITOR_LIST(DECLARE)
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#undef DECLARE
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private:
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void Update();
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void DumpCounters();
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void DumpCounterNames();
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void DumpEventMarker(unsigned marker);
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void HandleInstrumentationEvent(unsigned event);
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Counter* GetCounter(const char* name);
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void InstrumentLoadStore(const Instruction* instr);
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void InstrumentLoadStorePair(const Instruction* instr);
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std::list<Counter*> counters_;
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FILE* output_stream_;
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// Counter information is dumped every sample_period_ instructions decoded.
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// For a sample_period_ = 0 a final counter value is only produced when the
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// Instrumentation class is destroyed.
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uint64_t sample_period_;
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};
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} // namespace aarch64
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} // namespace vixl
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#endif // VIXL_AARCH64_INSTRUMENT_AARCH64_H_
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