upload android base code part3
This commit is contained in:
August
parent
71b83c22f1
commit
b9e30e05b1
15122 changed files with 2089659 additions and 0 deletions
332
android/art/runtime/trace.h
Normal file
332
android/art/runtime/trace.h
Normal file
|
|
@ -0,0 +1,332 @@
|
|||
/*
|
||||
* Copyright (C) 2011 The Android Open Source Project
|
||||
*
|
||||
* Licensed under the Apache License, Version 2.0 (the "License");
|
||||
* you may not use this file except in compliance with the License.
|
||||
* You may obtain a copy of the License at
|
||||
*
|
||||
* http://www.apache.org/licenses/LICENSE-2.0
|
||||
*
|
||||
* Unless required by applicable law or agreed to in writing, software
|
||||
* distributed under the License is distributed on an "AS IS" BASIS,
|
||||
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
* See the License for the specific language governing permissions and
|
||||
* limitations under the License.
|
||||
*/
|
||||
|
||||
#ifndef ART_RUNTIME_TRACE_H_
|
||||
#define ART_RUNTIME_TRACE_H_
|
||||
|
||||
#include <bitset>
|
||||
#include <map>
|
||||
#include <memory>
|
||||
#include <ostream>
|
||||
#include <set>
|
||||
#include <string>
|
||||
#include <unordered_map>
|
||||
#include <vector>
|
||||
|
||||
#include "atomic.h"
|
||||
#include "base/macros.h"
|
||||
#include "globals.h"
|
||||
#include "instrumentation.h"
|
||||
#include "os.h"
|
||||
#include "safe_map.h"
|
||||
|
||||
namespace art {
|
||||
|
||||
class ArtField;
|
||||
class ArtMethod;
|
||||
class DexFile;
|
||||
class Thread;
|
||||
|
||||
using DexIndexBitSet = std::bitset<65536>;
|
||||
|
||||
constexpr size_t kMaxThreadIdNumber = kIsTargetBuild ? 65536U : 1048576U;
|
||||
using ThreadIDBitSet = std::bitset<kMaxThreadIdNumber>;
|
||||
|
||||
enum TracingMode {
|
||||
kTracingInactive,
|
||||
kMethodTracingActive,
|
||||
kSampleProfilingActive,
|
||||
};
|
||||
|
||||
// File format:
|
||||
// header
|
||||
// record 0
|
||||
// record 1
|
||||
// ...
|
||||
//
|
||||
// Header format:
|
||||
// u4 magic ('SLOW')
|
||||
// u2 version
|
||||
// u2 offset to data
|
||||
// u8 start date/time in usec
|
||||
// u2 record size in bytes (version >= 2 only)
|
||||
// ... padding to 32 bytes
|
||||
//
|
||||
// Record format v1:
|
||||
// u1 thread ID
|
||||
// u4 method ID | method action
|
||||
// u4 time delta since start, in usec
|
||||
//
|
||||
// Record format v2:
|
||||
// u2 thread ID
|
||||
// u4 method ID | method action
|
||||
// u4 time delta since start, in usec
|
||||
//
|
||||
// Record format v3:
|
||||
// u2 thread ID
|
||||
// u4 method ID | method action
|
||||
// u4 time delta since start, in usec
|
||||
// u4 wall time since start, in usec (when clock == "dual" only)
|
||||
//
|
||||
// 32 bits of microseconds is 70 minutes.
|
||||
//
|
||||
// All values are stored in little-endian order.
|
||||
|
||||
enum TraceAction {
|
||||
kTraceMethodEnter = 0x00, // method entry
|
||||
kTraceMethodExit = 0x01, // method exit
|
||||
kTraceUnroll = 0x02, // method exited by exception unrolling
|
||||
// 0x03 currently unused
|
||||
kTraceMethodActionMask = 0x03, // two bits
|
||||
};
|
||||
|
||||
class Trace FINAL : public instrumentation::InstrumentationListener {
|
||||
public:
|
||||
enum TraceFlag {
|
||||
kTraceCountAllocs = 1,
|
||||
};
|
||||
|
||||
enum class TraceOutputMode {
|
||||
kFile,
|
||||
kDDMS,
|
||||
kStreaming
|
||||
};
|
||||
|
||||
enum class TraceMode {
|
||||
kMethodTracing,
|
||||
kSampling
|
||||
};
|
||||
|
||||
~Trace();
|
||||
|
||||
static void SetDefaultClockSource(TraceClockSource clock_source);
|
||||
|
||||
static void Start(const char* trace_filename, int trace_fd, size_t buffer_size, int flags,
|
||||
TraceOutputMode output_mode, TraceMode trace_mode, int interval_us)
|
||||
REQUIRES(!Locks::mutator_lock_, !Locks::thread_list_lock_, !Locks::thread_suspend_count_lock_,
|
||||
!Locks::trace_lock_);
|
||||
static void Pause() REQUIRES(!Locks::trace_lock_, !Locks::thread_list_lock_);
|
||||
static void Resume() REQUIRES(!Locks::trace_lock_);
|
||||
|
||||
// Stop tracing. This will finish the trace and write it to file/send it via DDMS.
|
||||
static void Stop()
|
||||
REQUIRES(!Locks::mutator_lock_, !Locks::thread_list_lock_, !Locks::trace_lock_);
|
||||
// Abort tracing. This will just stop tracing and *not* write/send the collected data.
|
||||
static void Abort()
|
||||
REQUIRES(!Locks::mutator_lock_, !Locks::thread_list_lock_, !Locks::trace_lock_);
|
||||
static void Shutdown()
|
||||
REQUIRES(!Locks::mutator_lock_, !Locks::thread_list_lock_, !Locks::trace_lock_);
|
||||
static TracingMode GetMethodTracingMode() REQUIRES(!Locks::trace_lock_);
|
||||
|
||||
bool UseWallClock();
|
||||
bool UseThreadCpuClock();
|
||||
void MeasureClockOverhead();
|
||||
uint32_t GetClockOverheadNanoSeconds();
|
||||
|
||||
void CompareAndUpdateStackTrace(Thread* thread, std::vector<ArtMethod*>* stack_trace)
|
||||
REQUIRES_SHARED(Locks::mutator_lock_) REQUIRES(!*unique_methods_lock_, !*streaming_lock_);
|
||||
|
||||
// InstrumentationListener implementation.
|
||||
void MethodEntered(Thread* thread,
|
||||
Handle<mirror::Object> this_object,
|
||||
ArtMethod* method,
|
||||
uint32_t dex_pc)
|
||||
REQUIRES_SHARED(Locks::mutator_lock_) REQUIRES(!*unique_methods_lock_, !*streaming_lock_)
|
||||
OVERRIDE;
|
||||
void MethodExited(Thread* thread,
|
||||
Handle<mirror::Object> this_object,
|
||||
ArtMethod* method,
|
||||
uint32_t dex_pc,
|
||||
const JValue& return_value)
|
||||
REQUIRES_SHARED(Locks::mutator_lock_) REQUIRES(!*unique_methods_lock_, !*streaming_lock_)
|
||||
OVERRIDE;
|
||||
void MethodUnwind(Thread* thread,
|
||||
Handle<mirror::Object> this_object,
|
||||
ArtMethod* method,
|
||||
uint32_t dex_pc)
|
||||
REQUIRES_SHARED(Locks::mutator_lock_) REQUIRES(!*unique_methods_lock_, !*streaming_lock_)
|
||||
OVERRIDE;
|
||||
void DexPcMoved(Thread* thread,
|
||||
Handle<mirror::Object> this_object,
|
||||
ArtMethod* method,
|
||||
uint32_t new_dex_pc)
|
||||
REQUIRES_SHARED(Locks::mutator_lock_) REQUIRES(!*unique_methods_lock_, !*streaming_lock_)
|
||||
OVERRIDE;
|
||||
void FieldRead(Thread* thread,
|
||||
Handle<mirror::Object> this_object,
|
||||
ArtMethod* method,
|
||||
uint32_t dex_pc,
|
||||
ArtField* field)
|
||||
REQUIRES_SHARED(Locks::mutator_lock_) REQUIRES(!*unique_methods_lock_) OVERRIDE;
|
||||
void FieldWritten(Thread* thread,
|
||||
Handle<mirror::Object> this_object,
|
||||
ArtMethod* method,
|
||||
uint32_t dex_pc,
|
||||
ArtField* field,
|
||||
const JValue& field_value)
|
||||
REQUIRES_SHARED(Locks::mutator_lock_) REQUIRES(!*unique_methods_lock_) OVERRIDE;
|
||||
void ExceptionCaught(Thread* thread,
|
||||
Handle<mirror::Throwable> exception_object)
|
||||
REQUIRES_SHARED(Locks::mutator_lock_) REQUIRES(!*unique_methods_lock_) OVERRIDE;
|
||||
void Branch(Thread* thread,
|
||||
ArtMethod* method,
|
||||
uint32_t dex_pc,
|
||||
int32_t dex_pc_offset)
|
||||
REQUIRES_SHARED(Locks::mutator_lock_) REQUIRES(!*unique_methods_lock_) OVERRIDE;
|
||||
void InvokeVirtualOrInterface(Thread* thread,
|
||||
Handle<mirror::Object> this_object,
|
||||
ArtMethod* caller,
|
||||
uint32_t dex_pc,
|
||||
ArtMethod* callee)
|
||||
REQUIRES_SHARED(Locks::mutator_lock_) REQUIRES(!*unique_methods_lock_) OVERRIDE;
|
||||
// Reuse an old stack trace if it exists, otherwise allocate a new one.
|
||||
static std::vector<ArtMethod*>* AllocStackTrace();
|
||||
// Clear and store an old stack trace for later use.
|
||||
static void FreeStackTrace(std::vector<ArtMethod*>* stack_trace);
|
||||
// Save id and name of a thread before it exits.
|
||||
static void StoreExitingThreadInfo(Thread* thread);
|
||||
|
||||
static TraceOutputMode GetOutputMode() REQUIRES(!Locks::trace_lock_);
|
||||
static TraceMode GetMode() REQUIRES(!Locks::trace_lock_);
|
||||
static size_t GetBufferSize() REQUIRES(!Locks::trace_lock_);
|
||||
|
||||
// Used by class linker to prevent class unloading.
|
||||
static bool IsTracingEnabled() REQUIRES(!Locks::trace_lock_);
|
||||
|
||||
private:
|
||||
Trace(File* trace_file, const char* trace_name, size_t buffer_size, int flags,
|
||||
TraceOutputMode output_mode, TraceMode trace_mode);
|
||||
|
||||
// The sampling interval in microseconds is passed as an argument.
|
||||
static void* RunSamplingThread(void* arg) REQUIRES(!Locks::trace_lock_);
|
||||
|
||||
static void StopTracing(bool finish_tracing, bool flush_file)
|
||||
REQUIRES(!Locks::mutator_lock_, !Locks::thread_list_lock_, !Locks::trace_lock_)
|
||||
// There is an annoying issue with static functions that create a new object and call into
|
||||
// that object that causes them to not be able to tell that we don't currently hold the lock.
|
||||
// This causes the negative annotations to incorrectly have a false positive. TODO: Figure out
|
||||
// how to annotate this.
|
||||
NO_THREAD_SAFETY_ANALYSIS;
|
||||
void FinishTracing()
|
||||
REQUIRES_SHARED(Locks::mutator_lock_) REQUIRES(!*unique_methods_lock_, !*streaming_lock_);
|
||||
|
||||
void ReadClocks(Thread* thread, uint32_t* thread_clock_diff, uint32_t* wall_clock_diff);
|
||||
|
||||
void LogMethodTraceEvent(Thread* thread, ArtMethod* method,
|
||||
instrumentation::Instrumentation::InstrumentationEvent event,
|
||||
uint32_t thread_clock_diff, uint32_t wall_clock_diff)
|
||||
REQUIRES_SHARED(Locks::mutator_lock_) REQUIRES(!*unique_methods_lock_, !*streaming_lock_);
|
||||
|
||||
// Methods to output traced methods and threads.
|
||||
void GetVisitedMethods(size_t end_offset, std::set<ArtMethod*>* visited_methods)
|
||||
REQUIRES(!*unique_methods_lock_);
|
||||
void DumpMethodList(std::ostream& os, const std::set<ArtMethod*>& visited_methods)
|
||||
REQUIRES_SHARED(Locks::mutator_lock_) REQUIRES(!*unique_methods_lock_);
|
||||
void DumpThreadList(std::ostream& os) REQUIRES(!Locks::thread_list_lock_);
|
||||
|
||||
// Methods to register seen entitites in streaming mode. The methods return true if the entity
|
||||
// is newly discovered.
|
||||
bool RegisterMethod(ArtMethod* method)
|
||||
REQUIRES_SHARED(Locks::mutator_lock_) REQUIRES(streaming_lock_);
|
||||
bool RegisterThread(Thread* thread)
|
||||
REQUIRES(streaming_lock_);
|
||||
|
||||
// Copy a temporary buffer to the main buffer. Used for streaming. Exposed here for lock
|
||||
// annotation.
|
||||
void WriteToBuf(const uint8_t* src, size_t src_size)
|
||||
REQUIRES(streaming_lock_);
|
||||
// Flush the main buffer to file. Used for streaming. Exposed here for lock annotation.
|
||||
void FlushBuf()
|
||||
REQUIRES(streaming_lock_);
|
||||
|
||||
uint32_t EncodeTraceMethod(ArtMethod* method) REQUIRES(!*unique_methods_lock_);
|
||||
uint32_t EncodeTraceMethodAndAction(ArtMethod* method, TraceAction action)
|
||||
REQUIRES(!*unique_methods_lock_);
|
||||
ArtMethod* DecodeTraceMethod(uint32_t tmid) REQUIRES(!*unique_methods_lock_);
|
||||
std::string GetMethodLine(ArtMethod* method) REQUIRES(!*unique_methods_lock_)
|
||||
REQUIRES_SHARED(Locks::mutator_lock_);
|
||||
|
||||
void DumpBuf(uint8_t* buf, size_t buf_size, TraceClockSource clock_source)
|
||||
REQUIRES_SHARED(Locks::mutator_lock_) REQUIRES(!*unique_methods_lock_);
|
||||
|
||||
// Singleton instance of the Trace or null when no method tracing is active.
|
||||
static Trace* volatile the_trace_ GUARDED_BY(Locks::trace_lock_);
|
||||
|
||||
// The default profiler clock source.
|
||||
static TraceClockSource default_clock_source_;
|
||||
|
||||
// Sampling thread, non-zero when sampling.
|
||||
static pthread_t sampling_pthread_;
|
||||
|
||||
// Used to remember an unused stack trace to avoid re-allocation during sampling.
|
||||
static std::unique_ptr<std::vector<ArtMethod*>> temp_stack_trace_;
|
||||
|
||||
// File to write trace data out to, null if direct to ddms.
|
||||
std::unique_ptr<File> trace_file_;
|
||||
|
||||
// Buffer to store trace data.
|
||||
std::unique_ptr<uint8_t[]> buf_;
|
||||
|
||||
// Flags enabling extra tracing of things such as alloc counts.
|
||||
const int flags_;
|
||||
|
||||
// The kind of output for this tracing.
|
||||
const TraceOutputMode trace_output_mode_;
|
||||
|
||||
// The tracing method.
|
||||
const TraceMode trace_mode_;
|
||||
|
||||
const TraceClockSource clock_source_;
|
||||
|
||||
// Size of buf_.
|
||||
const size_t buffer_size_;
|
||||
|
||||
// Time trace was created.
|
||||
const uint64_t start_time_;
|
||||
|
||||
// Clock overhead.
|
||||
const uint32_t clock_overhead_ns_;
|
||||
|
||||
// Offset into buf_.
|
||||
AtomicInteger cur_offset_;
|
||||
|
||||
// Did we overflow the buffer recording traces?
|
||||
bool overflow_;
|
||||
|
||||
// Map of thread ids and names that have already exited.
|
||||
SafeMap<pid_t, std::string> exited_threads_;
|
||||
|
||||
// Sampling profiler sampling interval.
|
||||
int interval_us_;
|
||||
|
||||
// Streaming mode data.
|
||||
std::string streaming_file_name_;
|
||||
Mutex* streaming_lock_;
|
||||
std::map<const DexFile*, DexIndexBitSet*> seen_methods_;
|
||||
std::unique_ptr<ThreadIDBitSet> seen_threads_;
|
||||
|
||||
// Bijective map from ArtMethod* to index.
|
||||
// Map from ArtMethod* to index in unique_methods_;
|
||||
Mutex* unique_methods_lock_ ACQUIRED_AFTER(streaming_lock_);
|
||||
std::unordered_map<ArtMethod*, uint32_t> art_method_id_map_ GUARDED_BY(unique_methods_lock_);
|
||||
std::vector<ArtMethod*> unique_methods_ GUARDED_BY(unique_methods_lock_);
|
||||
|
||||
DISALLOW_COPY_AND_ASSIGN(Trace);
|
||||
};
|
||||
|
||||
} // namespace art
|
||||
|
||||
#endif // ART_RUNTIME_TRACE_H_
|
||||
Loading…
Add table
Add a link
Reference in a new issue