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-rw-r--r--src/3rdparty/webkit/JavaScriptCore/bytecode/SamplingTool.cpp406
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diff --git a/src/3rdparty/webkit/JavaScriptCore/bytecode/SamplingTool.cpp b/src/3rdparty/webkit/JavaScriptCore/bytecode/SamplingTool.cpp
deleted file mode 100644
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--- a/src/3rdparty/webkit/JavaScriptCore/bytecode/SamplingTool.cpp
+++ /dev/null
@@ -1,406 +0,0 @@
-/*
- * Copyright (C) 2008, 2009 Apple Inc. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. 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.
- * 3. Neither the name of Apple Computer, Inc. ("Apple") 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 APPLE AND ITS 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 APPLE OR ITS 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.
- */
-
-#include "config.h"
-#include "SamplingTool.h"
-
-#include "CodeBlock.h"
-#include "Interpreter.h"
-#include "Opcode.h"
-
-#if !OS(WINDOWS)
-#include <unistd.h>
-#endif
-
-namespace JSC {
-
-#if ENABLE(SAMPLING_FLAGS)
-
-void SamplingFlags::sample()
-{
- uint32_t mask = 1 << 31;
- unsigned index;
-
- for (index = 0; index < 32; ++index) {
- if (mask & s_flags)
- break;
- mask >>= 1;
- }
-
- s_flagCounts[32 - index]++;
-}
-
-void SamplingFlags::start()
-{
- for (unsigned i = 0; i <= 32; ++i)
- s_flagCounts[i] = 0;
-}
-void SamplingFlags::stop()
-{
- uint64_t total = 0;
- for (unsigned i = 0; i <= 32; ++i)
- total += s_flagCounts[i];
-
- if (total) {
- printf("\nSamplingFlags: sample counts with flags set: (%lld total)\n", total);
- for (unsigned i = 0; i <= 32; ++i) {
- if (s_flagCounts[i])
- printf(" [ %02d ] : %lld\t\t(%03.2f%%)\n", i, s_flagCounts[i], (100.0 * s_flagCounts[i]) / total);
- }
- printf("\n");
- } else
- printf("\nSamplingFlags: no samples.\n\n");
-}
-uint64_t SamplingFlags::s_flagCounts[33];
-
-#else
-void SamplingFlags::start() {}
-void SamplingFlags::stop() {}
-#endif
-
-/*
- Start with flag 16 set.
- By doing this the monitoring of lower valued flags will be masked out
- until flag 16 is explictly cleared.
-*/
-uint32_t SamplingFlags::s_flags = 1 << 15;
-
-
-#if OS(WINDOWS)
-
-static void sleepForMicroseconds(unsigned us)
-{
- unsigned ms = us / 1000;
- if (us && !ms)
- ms = 1;
- Sleep(ms);
-}
-
-#else
-
-static void sleepForMicroseconds(unsigned us)
-{
- usleep(us);
-}
-
-#endif
-
-static inline unsigned hertz2us(unsigned hertz)
-{
- return 1000000 / hertz;
-}
-
-
-SamplingTool* SamplingTool::s_samplingTool = 0;
-
-
-bool SamplingThread::s_running = false;
-unsigned SamplingThread::s_hertz = 10000;
-ThreadIdentifier SamplingThread::s_samplingThread;
-
-void* SamplingThread::threadStartFunc(void*)
-{
- while (s_running) {
- sleepForMicroseconds(hertz2us(s_hertz));
-
-#if ENABLE(SAMPLING_FLAGS)
- SamplingFlags::sample();
-#endif
-#if ENABLE(OPCODE_SAMPLING)
- SamplingTool::sample();
-#endif
- }
-
- return 0;
-}
-
-
-void SamplingThread::start(unsigned hertz)
-{
- ASSERT(!s_running);
- s_running = true;
- s_hertz = hertz;
-
- s_samplingThread = createThread(threadStartFunc, 0, "JavaScriptCore::Sampler");
-}
-
-void SamplingThread::stop()
-{
- ASSERT(s_running);
- s_running = false;
- waitForThreadCompletion(s_samplingThread, 0);
-}
-
-
-void ScriptSampleRecord::sample(CodeBlock* codeBlock, Instruction* vPC)
-{
- if (!m_samples) {
- m_size = codeBlock->instructions().size();
- m_samples = static_cast<int*>(calloc(m_size, sizeof(int)));
- m_codeBlock = codeBlock;
- }
-
- ++m_sampleCount;
-
- unsigned offest = vPC - codeBlock->instructions().begin();
- // Since we don't read and write codeBlock and vPC atomically, this check
- // can fail if we sample mid op_call / op_ret.
- if (offest < m_size) {
- m_samples[offest]++;
- m_opcodeSampleCount++;
- }
-}
-
-void SamplingTool::doRun()
-{
- Sample sample(m_sample, m_codeBlock);
- ++m_sampleCount;
-
- if (sample.isNull())
- return;
-
- if (!sample.inHostFunction()) {
- unsigned opcodeID = m_interpreter->getOpcodeID(sample.vPC()[0].u.opcode);
-
- ++m_opcodeSampleCount;
- ++m_opcodeSamples[opcodeID];
-
- if (sample.inCTIFunction())
- m_opcodeSamplesInCTIFunctions[opcodeID]++;
- }
-
-#if ENABLE(CODEBLOCK_SAMPLING)
- if (CodeBlock* codeBlock = sample.codeBlock()) {
- MutexLocker locker(m_scriptSampleMapMutex);
- ScriptSampleRecord* record = m_scopeSampleMap->get(codeBlock->ownerExecutable());
- ASSERT(record);
- record->sample(codeBlock, sample.vPC());
- }
-#endif
-}
-
-void SamplingTool::sample()
-{
- s_samplingTool->doRun();
-}
-
-void SamplingTool::notifyOfScope(ScriptExecutable* script)
-{
-#if ENABLE(CODEBLOCK_SAMPLING)
- MutexLocker locker(m_scriptSampleMapMutex);
- m_scopeSampleMap->set(script, new ScriptSampleRecord(script));
-#else
- UNUSED_PARAM(script);
-#endif
-}
-
-void SamplingTool::setup()
-{
- s_samplingTool = this;
-}
-
-#if ENABLE(OPCODE_SAMPLING)
-
-struct OpcodeSampleInfo {
- OpcodeID opcode;
- long long count;
- long long countInCTIFunctions;
-};
-
-struct LineCountInfo {
- unsigned line;
- unsigned count;
-};
-
-static int compareOpcodeIndicesSampling(const void* left, const void* right)
-{
- const OpcodeSampleInfo* leftSampleInfo = reinterpret_cast<const OpcodeSampleInfo*>(left);
- const OpcodeSampleInfo* rightSampleInfo = reinterpret_cast<const OpcodeSampleInfo*>(right);
-
- return (leftSampleInfo->count < rightSampleInfo->count) ? 1 : (leftSampleInfo->count > rightSampleInfo->count) ? -1 : 0;
-}
-
-#if ENABLE(CODEBLOCK_SAMPLING)
-static int compareLineCountInfoSampling(const void* left, const void* right)
-{
- const LineCountInfo* leftLineCount = reinterpret_cast<const LineCountInfo*>(left);
- const LineCountInfo* rightLineCount = reinterpret_cast<const LineCountInfo*>(right);
-
- return (leftLineCount->line > rightLineCount->line) ? 1 : (leftLineCount->line < rightLineCount->line) ? -1 : 0;
-}
-
-static int compareScriptSampleRecords(const void* left, const void* right)
-{
- const ScriptSampleRecord* const leftValue = *static_cast<const ScriptSampleRecord* const *>(left);
- const ScriptSampleRecord* const rightValue = *static_cast<const ScriptSampleRecord* const *>(right);
-
- return (leftValue->m_sampleCount < rightValue->m_sampleCount) ? 1 : (leftValue->m_sampleCount > rightValue->m_sampleCount) ? -1 : 0;
-}
-#endif
-
-void SamplingTool::dump(ExecState* exec)
-{
- // Tidies up SunSpider output by removing short scripts - such a small number of samples would likely not be useful anyhow.
- if (m_sampleCount < 10)
- return;
-
- // (1) Build and sort 'opcodeSampleInfo' array.
-
- OpcodeSampleInfo opcodeSampleInfo[numOpcodeIDs];
- for (int i = 0; i < numOpcodeIDs; ++i) {
- opcodeSampleInfo[i].opcode = static_cast<OpcodeID>(i);
- opcodeSampleInfo[i].count = m_opcodeSamples[i];
- opcodeSampleInfo[i].countInCTIFunctions = m_opcodeSamplesInCTIFunctions[i];
- }
-
- qsort(opcodeSampleInfo, numOpcodeIDs, sizeof(OpcodeSampleInfo), compareOpcodeIndicesSampling);
-
- // (2) Print Opcode sampling results.
-
- printf("\nBytecode samples [*]\n");
- printf(" sample %% of %% of | cti cti %%\n");
- printf("opcode count VM total | count of self\n");
- printf("------------------------------------------------------- | ----------------\n");
-
- for (int i = 0; i < numOpcodeIDs; ++i) {
- long long count = opcodeSampleInfo[i].count;
- if (!count)
- continue;
-
- OpcodeID opcodeID = opcodeSampleInfo[i].opcode;
-
- const char* opcodeName = opcodeNames[opcodeID];
- const char* opcodePadding = padOpcodeName(opcodeID, 28);
- double percentOfVM = (static_cast<double>(count) * 100) / m_opcodeSampleCount;
- double percentOfTotal = (static_cast<double>(count) * 100) / m_sampleCount;
- long long countInCTIFunctions = opcodeSampleInfo[i].countInCTIFunctions;
- double percentInCTIFunctions = (static_cast<double>(countInCTIFunctions) * 100) / count;
- fprintf(stdout, "%s:%s%-6lld %.3f%%\t%.3f%%\t | %-6lld %.3f%%\n", opcodeName, opcodePadding, count, percentOfVM, percentOfTotal, countInCTIFunctions, percentInCTIFunctions);
- }
-
- printf("\n[*] Samples inside host code are not charged to any Bytecode.\n\n");
- printf("\tSamples inside VM:\t\t%lld / %lld (%.3f%%)\n", m_opcodeSampleCount, m_sampleCount, (static_cast<double>(m_opcodeSampleCount) * 100) / m_sampleCount);
- printf("\tSamples inside host code:\t%lld / %lld (%.3f%%)\n\n", m_sampleCount - m_opcodeSampleCount, m_sampleCount, (static_cast<double>(m_sampleCount - m_opcodeSampleCount) * 100) / m_sampleCount);
- printf("\tsample count:\tsamples inside this opcode\n");
- printf("\t%% of VM:\tsample count / all opcode samples\n");
- printf("\t%% of total:\tsample count / all samples\n");
- printf("\t--------------\n");
- printf("\tcti count:\tsamples inside a CTI function called by this opcode\n");
- printf("\tcti %% of self:\tcti count / sample count\n");
-
-#if ENABLE(CODEBLOCK_SAMPLING)
-
- // (3) Build and sort 'codeBlockSamples' array.
-
- int scopeCount = m_scopeSampleMap->size();
- Vector<ScriptSampleRecord*> codeBlockSamples(scopeCount);
- ScriptSampleRecordMap::iterator iter = m_scopeSampleMap->begin();
- for (int i = 0; i < scopeCount; ++i, ++iter)
- codeBlockSamples[i] = iter->second;
-
- qsort(codeBlockSamples.begin(), scopeCount, sizeof(ScriptSampleRecord*), compareScriptSampleRecords);
-
- // (4) Print data from 'codeBlockSamples' array.
-
- printf("\nCodeBlock samples\n\n");
-
- for (int i = 0; i < scopeCount; ++i) {
- ScriptSampleRecord* record = codeBlockSamples[i];
- CodeBlock* codeBlock = record->m_codeBlock;
-
- double blockPercent = (record->m_sampleCount * 100.0) / m_sampleCount;
-
- if (blockPercent >= 1) {
- //Instruction* code = codeBlock->instructions().begin();
- printf("#%d: %s:%d: %d / %lld (%.3f%%)\n", i + 1, record->m_executable->sourceURL().UTF8String().c_str(), codeBlock->lineNumberForBytecodeOffset(exec, 0), record->m_sampleCount, m_sampleCount, blockPercent);
- if (i < 10) {
- HashMap<unsigned,unsigned> lineCounts;
- codeBlock->dump(exec);
-
- printf(" Opcode and line number samples [*]\n\n");
- for (unsigned op = 0; op < record->m_size; ++op) {
- int count = record->m_samples[op];
- if (count) {
- printf(" [% 4d] has sample count: % 4d\n", op, count);
- unsigned line = codeBlock->lineNumberForBytecodeOffset(exec, op);
- lineCounts.set(line, (lineCounts.contains(line) ? lineCounts.get(line) : 0) + count);
- }
- }
- printf("\n");
-
- int linesCount = lineCounts.size();
- Vector<LineCountInfo> lineCountInfo(linesCount);
- int lineno = 0;
- for (HashMap<unsigned,unsigned>::iterator iter = lineCounts.begin(); iter != lineCounts.end(); ++iter, ++lineno) {
- lineCountInfo[lineno].line = iter->first;
- lineCountInfo[lineno].count = iter->second;
- }
-
- qsort(lineCountInfo.begin(), linesCount, sizeof(LineCountInfo), compareLineCountInfoSampling);
-
- for (lineno = 0; lineno < linesCount; ++lineno) {
- printf(" Line #%d has sample count %d.\n", lineCountInfo[lineno].line, lineCountInfo[lineno].count);
- }
- printf("\n");
- printf(" [*] Samples inside host code are charged to the calling Bytecode.\n");
- printf(" Samples on a call / return boundary are not charged to a specific opcode or line.\n\n");
- printf(" Samples on a call / return boundary: %d / %d (%.3f%%)\n\n", record->m_sampleCount - record->m_opcodeSampleCount, record->m_sampleCount, (static_cast<double>(record->m_sampleCount - record->m_opcodeSampleCount) * 100) / record->m_sampleCount);
- }
- }
- }
-#else
- UNUSED_PARAM(exec);
-#endif
-}
-
-#else
-
-void SamplingTool::dump(ExecState*)
-{
-}
-
-#endif
-
-void AbstractSamplingCounter::dump()
-{
-#if ENABLE(SAMPLING_COUNTERS)
- if (s_abstractSamplingCounterChain != &s_abstractSamplingCounterChainEnd) {
- printf("\nSampling Counter Values:\n");
- for (AbstractSamplingCounter* currCounter = s_abstractSamplingCounterChain; (currCounter != &s_abstractSamplingCounterChainEnd); currCounter = currCounter->m_next)
- printf("\t%s\t: %lld\n", currCounter->m_name, currCounter->m_counter);
- printf("\n\n");
- }
- s_completed = true;
-#endif
-}
-
-AbstractSamplingCounter AbstractSamplingCounter::s_abstractSamplingCounterChainEnd;
-AbstractSamplingCounter* AbstractSamplingCounter::s_abstractSamplingCounterChain = &s_abstractSamplingCounterChainEnd;
-bool AbstractSamplingCounter::s_completed = false;
-
-} // namespace JSC
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