#include "Interpreter.h"
#include "Opcode.h"
-#if !PLATFORM(WIN_OS)
+#if !OS(WINDOWS)
#include <unistd.h>
#endif
namespace JSC {
-void ScopeSampleRecord::sample(CodeBlock* codeBlock, Instruction* vPC)
+#if ENABLE(SAMPLING_FLAGS)
+
+void SamplingFlags::sample()
{
- if (!m_samples) {
- m_size = codeBlock->instructions().size();
- m_samples = static_cast<int*>(calloc(m_size, sizeof(int)));
- m_codeBlock = codeBlock;
+ uint32_t mask = static_cast<uint32_t>(1 << 31);
+ unsigned index;
+
+ for (index = 0; index < 32; ++index) {
+ if (mask & s_flags)
+ break;
+ mask >>= 1;
}
- ++m_sampleCount;
+ s_flagCounts[32 - index]++;
+}
- 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 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];
-#if PLATFORM(WIN_OS)
+#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)
{
return 1000000 / hertz;
}
-void SamplingTool::run()
-{
- while (m_running) {
- sleepForMicroseconds(hertz2us(m_hertz));
- Sample sample(m_sample, m_codeBlock);
- ++m_sampleCount;
+SamplingTool* SamplingTool::s_samplingTool = 0;
- if (sample.isNull())
- continue;
- if (!sample.inHostFunction()) {
- unsigned opcodeID = m_interpreter->getOpcodeID(sample.vPC()[0].u.opcode);
+bool SamplingThread::s_running = false;
+unsigned SamplingThread::s_hertz = 10000;
+ThreadIdentifier SamplingThread::s_samplingThread;
- ++m_opcodeSampleCount;
- ++m_opcodeSamples[opcodeID];
-
- if (sample.inCTIFunction())
- m_opcodeSamplesInCTIFunctions[opcodeID]++;
- }
+void* SamplingThread::threadStartFunc(void*)
+{
+ while (s_running) {
+ sleepForMicroseconds(hertz2us(s_hertz));
-#if ENABLE(CODEBLOCK_SAMPLING)
- MutexLocker locker(m_scopeSampleMapMutex);
- ScopeSampleRecord* record = m_scopeSampleMap->get(sample.codeBlock()->ownerNode());
- ASSERT(record);
- record->sample(sample.codeBlock(), sample.vPC());
+#if ENABLE(SAMPLING_FLAGS)
+ SamplingFlags::sample();
+#endif
+#if ENABLE(OPCODE_SAMPLING)
+ SamplingTool::sample();
#endif
}
+
+ return 0;
}
-void* SamplingTool::threadStartFunc(void* samplingTool)
+
+void SamplingThread::start(unsigned hertz)
{
- reinterpret_cast<SamplingTool*>(samplingTool)->run();
- return 0;
+ 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::notifyOfScope(ScopeNode* scope)
+void SamplingTool::doRun()
{
- MutexLocker locker(m_scopeSampleMapMutex);
- m_scopeSampleMap->set(scope, new ScopeSampleRecord(scope));
+ 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::start(unsigned hertz)
+void SamplingTool::sample()
{
- ASSERT(!m_running);
- m_running = true;
- m_hertz = hertz;
+ s_samplingTool->doRun();
+}
- m_samplingThread = createThread(threadStartFunc, this, "JavaScriptCore::Sampler");
+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::stop()
+void SamplingTool::setup()
{
- ASSERT(m_running);
- m_running = false;
- waitForThreadCompletion(m_samplingThread, 0);
+ s_samplingTool = this;
}
#if ENABLE(OPCODE_SAMPLING)
unsigned count;
};
-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 compareOpcodeIndicesSampling(const void* left, const void* right)
{
const OpcodeSampleInfo* leftSampleInfo = reinterpret_cast<const OpcodeSampleInfo*>(left);
return (leftSampleInfo->count < rightSampleInfo->count) ? 1 : (leftSampleInfo->count > rightSampleInfo->count) ? -1 : 0;
}
-static int compareScopeSampleRecords(const void* left, const void* right)
+#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 ScopeSampleRecord* const leftValue = *static_cast<const ScopeSampleRecord* const *>(left);
- const ScopeSampleRecord* const rightValue = *static_cast<const ScopeSampleRecord* const *>(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)
{
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<ScopeSampleRecord*> codeBlockSamples(scopeCount);
- ScopeSampleRecordMap::iterator iter = m_scopeSampleMap->begin();
+ 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(ScopeSampleRecord*), compareScopeSampleRecords);
+ 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) {
- ScopeSampleRecord* record = codeBlockSamples[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_scope->sourceURL().UTF8String().c_str(), codeBlock->lineNumberForBytecodeOffset(exec, 0), record->m_sampleCount, m_sampleCount, blockPercent);
+ printf("#%d: %s:%d: %d / %lld (%.3f%%)\n", i + 1, record->m_executable->sourceURL().utf8().data(), codeBlock->lineNumberForBytecodeOffset(0), record->m_sampleCount, m_sampleCount, blockPercent);
if (i < 10) {
HashMap<unsigned,unsigned> lineCounts;
codeBlock->dump(exec);
int count = record->m_samples[op];
if (count) {
printf(" [% 4d] has sample count: % 4d\n", op, count);
- unsigned line = codeBlock->lineNumberForBytecodeOffset(exec, op);
+ unsigned line = codeBlock->lineNumberForBytecodeOffset(op);
lineCounts.set(line, (lineCounts.contains(line) ? lineCounts.get(line) : 0) + count);
}
}
}
}
}
+#else
+ UNUSED_PARAM(exec);
+#endif
}
#else
#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
projects / apple / javascriptcore.git / blobdiff