TeamPGM/Nagram
2
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
488723b4a3
Nagram/TMessagesProj/jni/voip/webrtc/base/trace_event/trace_event.h

838 lines
38 KiB
C
Raw Normal View History

Update to 7.0.0 (2060)
2020-08-14 16:58:22 +00:00
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef BASE_TRACE_EVENT_TRACE_EVENT_H_
#define BASE_TRACE_EVENT_TRACE_EVENT_H_
// This header file defines implementation details of how the trace macros in
// trace_event_common.h collect and store trace events. Anything not
// implementation-specific should go in trace_event_common.h instead of here.
#include <stddef.h>
#include <stdint.h>
#include <string>
#include "base/atomicops.h"
#include "base/debug/debugging_buildflags.h"
#include "base/macros.h"
#include "base/time/time.h"
#include "base/time/time_override.h"
#include "base/trace_event/builtin_categories.h"
#include "base/trace_event/common/trace_event_common.h"
#include "base/trace_event/heap_profiler.h"
#include "base/trace_event/log_message.h"
#include "base/trace_event/thread_instruction_count.h"
#include "base/trace_event/trace_arguments.h"
#include "base/trace_event/trace_category.h"
#include "base/trace_event/trace_log.h"
#include "build/build_config.h"
// By default, const char* argument values are assumed to have long-lived scope
// and will not be copied. Use this macro to force a const char* to be copied.
#define TRACE_STR_COPY(str) ::base::trace_event::TraceStringWithCopy(str)
// By default, trace IDs are eventually converted to a single 64-bit number. Use
// this macro to add a scope string. For example,
//
// TRACE_EVENT_NESTABLE_ASYNC_BEGIN0(
// "network", "ResourceLoad",
// TRACE_ID_WITH_SCOPE("BlinkResourceID", resourceID));
//
// Also, it is possible to prepend the ID with another number, like the process
// ID. This is useful in creating IDs that are unique among all processes. To do
// that, pass two numbers after the scope string instead of one. For example,
//
// TRACE_EVENT_NESTABLE_ASYNC_BEGIN0(
// "network", "ResourceLoad",
// TRACE_ID_WITH_SCOPE("BlinkResourceID", pid, resourceID));
#define TRACE_ID_WITH_SCOPE(scope, ...) \
trace_event_internal::TraceID::WithScope(scope, ##__VA_ARGS__)
// Use this for ids that are unique across processes. This allows different
// processes to use the same id to refer to the same event.
#define TRACE_ID_GLOBAL(id) trace_event_internal::TraceID::GlobalId(id)
// Use this for ids that are unique within a single process. This allows
// different processes to use the same id to refer to different events.
#define TRACE_ID_LOCAL(id) trace_event_internal::TraceID::LocalId(id)
#define TRACE_EVENT_API_CURRENT_THREAD_ID \
static_cast<int>(base::PlatformThread::CurrentId())
#define INTERNAL_TRACE_EVENT_CATEGORY_GROUP_ENABLED_FOR_RECORDING_MODE() \
UNLIKELY(*INTERNAL_TRACE_EVENT_UID(category_group_enabled) & \
(base::trace_event::TraceCategory::ENABLED_FOR_RECORDING | \
base::trace_event::TraceCategory::ENABLED_FOR_ETW_EXPORT))
#define INTERNAL_TRACE_EVENT_CATEGORY_GROUP_ENABLED() \
UNLIKELY(*INTERNAL_TRACE_EVENT_UID(category_group_enabled) & \
(base::trace_event::TraceCategory::ENABLED_FOR_RECORDING | \
base::trace_event::TraceCategory::ENABLED_FOR_ETW_EXPORT | \
base::trace_event::TraceCategory::ENABLED_FOR_FILTERING))
////////////////////////////////////////////////////////////////////////////////
// Implementation specific tracing API definitions.
// Get a pointer to the enabled state of the given trace category. Only
// long-lived literal strings should be given as the category group. The
// returned pointer can be held permanently in a local static for example. If
// the unsigned char is non-zero, tracing is enabled. If tracing is enabled,
// TRACE_EVENT_API_ADD_TRACE_EVENT can be called. It's OK if tracing is disabled
// between the load of the tracing state and the call to
// TRACE_EVENT_API_ADD_TRACE_EVENT, because this flag only provides an early out
// for best performance when tracing is disabled.
// const unsigned char*
// TRACE_EVENT_API_GET_CATEGORY_GROUP_ENABLED(const char* category_group)
#define TRACE_EVENT_API_GET_CATEGORY_GROUP_ENABLED \
base::trace_event::TraceLog::GetCategoryGroupEnabled
// Get the number of times traces have been recorded. This is used to implement
// the TRACE_EVENT_IS_NEW_TRACE facility.
// unsigned int TRACE_EVENT_API_GET_NUM_TRACES_RECORDED()
#define TRACE_EVENT_API_GET_NUM_TRACES_RECORDED \
trace_event_internal::GetNumTracesRecorded
// Add a trace event to the platform tracing system.
// base::trace_event::TraceEventHandle TRACE_EVENT_API_ADD_TRACE_EVENT(
// char phase,
// const unsigned char* category_group_enabled,
// const char* name,
// const char* scope,
// unsigned long long id,
// base::trace_event::TraceArguments* args,
// unsigned int flags)
#define TRACE_EVENT_API_ADD_TRACE_EVENT trace_event_internal::AddTraceEvent
// Add a trace event to the platform tracing system.
// base::trace_event::TraceEventHandle
// TRACE_EVENT_API_ADD_TRACE_EVENT_WITH_BIND_ID(
// char phase,
// const unsigned char* category_group_enabled,
// const char* name,
// const char* scope,
// unsigned long long id,
// unsigned long long bind_id,
// base::trace_event::TraceArguments* args,
// unsigned int flags)
#define TRACE_EVENT_API_ADD_TRACE_EVENT_WITH_BIND_ID \
trace_event_internal::AddTraceEventWithBindId
// Add a trace event to the platform tracing system overriding the pid.
// The resulting event will have tid = pid == (process_id passed here).
// base::trace_event::TraceEventHandle
// TRACE_EVENT_API_ADD_TRACE_EVENT_WITH_PROCESS_ID(
// char phase,
// const unsigned char* category_group_enabled,
// const char* name,
// const char* scope,
// unsigned long long id,
// int process_id,
// base::trace_event::TraceArguments* args,
// unsigned int flags)
#define TRACE_EVENT_API_ADD_TRACE_EVENT_WITH_PROCESS_ID \
trace_event_internal::AddTraceEventWithProcessId
// Add a trace event to the platform tracing system.
// base::trace_event::TraceEventHandle
// TRACE_EVENT_API_ADD_TRACE_EVENT_WITH_TIMESTAMP(
// char phase,
// const unsigned char* category_group_enabled,
// const char* name,
// const char* scope,
// unsigned long long id,
// int thread_id,
// const TimeTicks& timestamp,
// base::trace_event::TraceArguments* args,
// unsigned int flags)
#define TRACE_EVENT_API_ADD_TRACE_EVENT_WITH_THREAD_ID_AND_TIMESTAMP \
trace_event_internal::AddTraceEventWithThreadIdAndTimestamp
// Set the duration field of a COMPLETE trace event.
// void TRACE_EVENT_API_UPDATE_TRACE_EVENT_DURATION(
// const unsigned char* category_group_enabled,
// const char* name,
// base::trace_event::TraceEventHandle id)
#define TRACE_EVENT_API_UPDATE_TRACE_EVENT_DURATION \
trace_event_internal::UpdateTraceEventDuration
// Set the duration field of a COMPLETE trace event.
// void TRACE_EVENT_API_UPDATE_TRACE_EVENT_DURATION_EXPLICIT(
// const unsigned char* category_group_enabled,
// const char* name,
// base::trace_event::TraceEventHandle id,
// int thread_id,
// bool explicit_timestamps,
// const base::TimeTicks& now,
// const base::ThreadTicks& thread_now,
// base::trace_event::ThreadInstructionCount thread_instruction_now)
#define TRACE_EVENT_API_UPDATE_TRACE_EVENT_DURATION_EXPLICIT \
trace_event_internal::UpdateTraceEventDurationExplicit
// Adds a metadata event to the trace log. The |AppendValueAsTraceFormat| method
// on the convertable value will be called at flush time.
// TRACE_EVENT_API_ADD_METADATA_EVENT(
// const unsigned char* category_group_enabled,
// const char* event_name,
// const char* arg_name,
// std::unique_ptr<ConvertableToTraceFormat> arg_value)
#define TRACE_EVENT_API_ADD_METADATA_EVENT \
trace_event_internal::AddMetadataEvent
// Defines atomic operations used internally by the tracing system.
#define TRACE_EVENT_API_ATOMIC_WORD base::subtle::AtomicWord
#define TRACE_EVENT_API_ATOMIC_LOAD(var) base::subtle::NoBarrier_Load(&(var))
#define TRACE_EVENT_API_ATOMIC_STORE(var, value) \
base::subtle::NoBarrier_Store(&(var), (value))
// Defines visibility for classes in trace_event.h
#define TRACE_EVENT_API_CLASS_EXPORT BASE_EXPORT
////////////////////////////////////////////////////////////////////////////////
// Implementation detail: trace event macros create temporary variables
// to keep instrumentation overhead low. These macros give each temporary
// variable a unique name based on the line number to prevent name collisions.
#define INTERNAL_TRACE_EVENT_UID3(a,b) \
trace_event_unique_##a##b
#define INTERNAL_TRACE_EVENT_UID2(a,b) \
INTERNAL_TRACE_EVENT_UID3(a,b)
#define INTERNAL_TRACE_EVENT_UID(name_prefix) \
INTERNAL_TRACE_EVENT_UID2(name_prefix, __LINE__)
// Implementation detail: internal macro to create static category.
// No barriers are needed, because this code is designed to operate safely
// even when the unsigned char* points to garbage data (which may be the case
// on processors without cache coherency).
#define INTERNAL_TRACE_EVENT_GET_CATEGORY_INFO_CUSTOM_VARIABLES( \
category_group, atomic, category_group_enabled) \
category_group_enabled = reinterpret_cast<const unsigned char*>( \
TRACE_EVENT_API_ATOMIC_LOAD(atomic)); \
if (UNLIKELY(!category_group_enabled)) { \
category_group_enabled = \
TRACE_EVENT_API_GET_CATEGORY_GROUP_ENABLED(category_group); \
TRACE_EVENT_API_ATOMIC_STORE( \
atomic, reinterpret_cast<TRACE_EVENT_API_ATOMIC_WORD>( \
category_group_enabled)); \
}
#define INTERNAL_TRACE_EVENT_GET_CATEGORY_INFO_MAYBE_AT_COMPILE_TIME( \
category_group, k_category_group_enabled, category_group_enabled) \
if (k_category_group_enabled) { \
category_group_enabled = k_category_group_enabled; \
} else { \
static TRACE_EVENT_API_ATOMIC_WORD INTERNAL_TRACE_EVENT_UID(atomic) = 0; \
INTERNAL_TRACE_EVENT_GET_CATEGORY_INFO_CUSTOM_VARIABLES( \
category_group, INTERNAL_TRACE_EVENT_UID(atomic), \
category_group_enabled); \
}
#define INTERNAL_TRACE_EVENT_GET_CATEGORY_INFO(category_group) \
static_assert( \
base::trace_event::BuiltinCategories::IsAllowedCategory(category_group), \
"Unknown tracing category is used. Please register your " \
"category in base/trace_event/builtin_categories.h"); \
constexpr const unsigned char* INTERNAL_TRACE_EVENT_UID( \
k_category_group_enabled) = \
base::trace_event::TraceLog::GetBuiltinCategoryEnabled(category_group); \
const unsigned char* INTERNAL_TRACE_EVENT_UID(category_group_enabled); \
INTERNAL_TRACE_EVENT_GET_CATEGORY_INFO_MAYBE_AT_COMPILE_TIME( \
category_group, INTERNAL_TRACE_EVENT_UID(k_category_group_enabled), \
INTERNAL_TRACE_EVENT_UID(category_group_enabled));
// Implementation detail: internal macro to return unoverridden
// base::TimeTicks::Now(). This is important because in headless VirtualTime can
// override base:TimeTicks::Now().
#define INTERNAL_TRACE_TIME_TICKS_NOW() \
base::subtle::TimeTicksNowIgnoringOverride()
// Implementation detail: internal macro to return unoverridden
// base::Time::Now(). This is important because in headless VirtualTime can
// override base:TimeTicks::Now().
#define INTERNAL_TRACE_TIME_NOW() base::subtle::TimeNowIgnoringOverride()
// Implementation detail: internal macro to create static category and add
// event if the category is enabled.
#define INTERNAL_TRACE_EVENT_ADD(phase, category_group, name, flags, ...) \
do { \
INTERNAL_TRACE_EVENT_GET_CATEGORY_INFO(category_group); \
if (INTERNAL_TRACE_EVENT_CATEGORY_GROUP_ENABLED()) { \
trace_event_internal::AddTraceEvent( \
phase, INTERNAL_TRACE_EVENT_UID(category_group_enabled), name, \
trace_event_internal::kGlobalScope, trace_event_internal::kNoId, \
flags, trace_event_internal::kNoId, ##__VA_ARGS__); \
} \
} while (0)
// Implementation detail: internal macro to create static category and add begin
// event if the category is enabled. Also adds the end event when the scope
// ends.
#define INTERNAL_TRACE_EVENT_ADD_SCOPED(category_group, name, ...) \
INTERNAL_TRACE_EVENT_GET_CATEGORY_INFO(category_group); \
trace_event_internal::ScopedTracer INTERNAL_TRACE_EVENT_UID(tracer); \
if (INTERNAL_TRACE_EVENT_CATEGORY_GROUP_ENABLED()) { \
base::trace_event::TraceEventHandle h = \
trace_event_internal::AddTraceEvent( \
TRACE_EVENT_PHASE_COMPLETE, \
INTERNAL_TRACE_EVENT_UID(category_group_enabled), name, \
trace_event_internal::kGlobalScope, trace_event_internal::kNoId, \
TRACE_EVENT_FLAG_NONE, trace_event_internal::kNoId, \
##__VA_ARGS__); \
INTERNAL_TRACE_EVENT_UID(tracer).Initialize( \
INTERNAL_TRACE_EVENT_UID(category_group_enabled), name, h); \
}
#define INTERNAL_TRACE_EVENT_ADD_SCOPED_WITH_FLAGS(category_group, name, \
flags, ...) \
INTERNAL_TRACE_EVENT_GET_CATEGORY_INFO(category_group); \
trace_event_internal::ScopedTracer INTERNAL_TRACE_EVENT_UID(tracer); \
if (INTERNAL_TRACE_EVENT_CATEGORY_GROUP_ENABLED()) { \
base::trace_event::TraceEventHandle h = \
trace_event_internal::AddTraceEvent( \
TRACE_EVENT_PHASE_COMPLETE, \
INTERNAL_TRACE_EVENT_UID(category_group_enabled), name, \
trace_event_internal::kGlobalScope, trace_event_internal::kNoId, \
flags, trace_event_internal::kNoId, ##__VA_ARGS__); \
INTERNAL_TRACE_EVENT_UID(tracer).Initialize( \
INTERNAL_TRACE_EVENT_UID(category_group_enabled), name, h); \
}
#define INTERNAL_TRACE_EVENT_ADD_SCOPED_WITH_FLOW(category_group, name, \
bind_id, flow_flags, ...) \
INTERNAL_TRACE_EVENT_GET_CATEGORY_INFO(category_group); \
trace_event_internal::ScopedTracer INTERNAL_TRACE_EVENT_UID(tracer); \
if (INTERNAL_TRACE_EVENT_CATEGORY_GROUP_ENABLED()) { \
trace_event_internal::TraceID trace_event_bind_id((bind_id)); \
unsigned int trace_event_flags = \
flow_flags | trace_event_bind_id.id_flags(); \
base::trace_event::TraceEventHandle h = \
trace_event_internal::AddTraceEvent( \
TRACE_EVENT_PHASE_COMPLETE, \
INTERNAL_TRACE_EVENT_UID(category_group_enabled), name, \
trace_event_internal::kGlobalScope, trace_event_internal::kNoId, \
trace_event_flags, trace_event_bind_id.raw_id(), ##__VA_ARGS__); \
INTERNAL_TRACE_EVENT_UID(tracer).Initialize( \
INTERNAL_TRACE_EVENT_UID(category_group_enabled), name, h); \
}
// Implementation detail: internal macro to create static category and add
// event if the category is enabled.
#define INTERNAL_TRACE_EVENT_ADD_WITH_ID(phase, category_group, name, id, \
flags, ...) \
do { \
INTERNAL_TRACE_EVENT_GET_CATEGORY_INFO(category_group); \
if (INTERNAL_TRACE_EVENT_CATEGORY_GROUP_ENABLED()) { \
trace_event_internal::TraceID trace_event_trace_id((id)); \
unsigned int trace_event_flags = \
flags | trace_event_trace_id.id_flags(); \
trace_event_internal::AddTraceEvent( \
phase, INTERNAL_TRACE_EVENT_UID(category_group_enabled), name, \
trace_event_trace_id.scope(), trace_event_trace_id.raw_id(), \
trace_event_flags, trace_event_internal::kNoId, ##__VA_ARGS__); \
} \
} while (0)
// Implementation detail: internal macro to create static category and add
// event if the category is enabled.
#define INTERNAL_TRACE_EVENT_ADD_WITH_TIMESTAMP(phase, category_group, name, \
timestamp, flags, ...) \
do { \
INTERNAL_TRACE_EVENT_GET_CATEGORY_INFO(category_group); \
if (INTERNAL_TRACE_EVENT_CATEGORY_GROUP_ENABLED()) { \
trace_event_internal::AddTraceEventWithThreadIdAndTimestamp( \
phase, INTERNAL_TRACE_EVENT_UID(category_group_enabled), name, \
trace_event_internal::kGlobalScope, trace_event_internal::kNoId, \
TRACE_EVENT_API_CURRENT_THREAD_ID, timestamp, \
flags | TRACE_EVENT_FLAG_EXPLICIT_TIMESTAMP, \
trace_event_internal::kNoId, ##__VA_ARGS__); \
} \
} while (0)
// Implementation detail: internal macro to create static category and add
// event if the category is enabled.
#define INTERNAL_TRACE_EVENT_ADD_WITH_ID_TID_AND_TIMESTAMP( \
phase, category_group, name, id, thread_id, timestamp, flags, ...) \
do { \
INTERNAL_TRACE_EVENT_GET_CATEGORY_INFO(category_group); \
if (INTERNAL_TRACE_EVENT_CATEGORY_GROUP_ENABLED()) { \
trace_event_internal::TraceID trace_event_trace_id((id)); \
unsigned int trace_event_flags = \
flags | trace_event_trace_id.id_flags(); \
trace_event_internal::AddTraceEventWithThreadIdAndTimestamp( \
phase, INTERNAL_TRACE_EVENT_UID(category_group_enabled), name, \
trace_event_trace_id.scope(), trace_event_trace_id.raw_id(), \
thread_id, timestamp, \
trace_event_flags | TRACE_EVENT_FLAG_EXPLICIT_TIMESTAMP, \
trace_event_internal::kNoId, ##__VA_ARGS__); \
} \
} while (0)
// Implementation detail: internal macro to create static category and add
// event if the category is enabled.
#define INTERNAL_TRACE_EVENT_ADD_WITH_ID_TID_AND_TIMESTAMPS( \
category_group, name, id, thread_id, begin_timestamp, end_timestamp, \
thread_end_timestamp, flags, ...) \
do { \
INTERNAL_TRACE_EVENT_GET_CATEGORY_INFO(category_group); \
if (INTERNAL_TRACE_EVENT_CATEGORY_GROUP_ENABLED()) { \
trace_event_internal::TraceID trace_event_trace_id((id)); \
unsigned int trace_event_flags = \
flags | trace_event_trace_id.id_flags(); \
const unsigned char* uid_category_group_enabled = \
INTERNAL_TRACE_EVENT_UID(category_group_enabled); \
auto handle = \
trace_event_internal::AddTraceEventWithThreadIdAndTimestamp( \
TRACE_EVENT_PHASE_COMPLETE, uid_category_group_enabled, name, \
trace_event_trace_id.scope(), trace_event_trace_id.raw_id(), \
thread_id, begin_timestamp, \
trace_event_flags | TRACE_EVENT_FLAG_EXPLICIT_TIMESTAMP, \
trace_event_internal::kNoId, ##__VA_ARGS__); \
TRACE_EVENT_API_UPDATE_TRACE_EVENT_DURATION_EXPLICIT( \
uid_category_group_enabled, name, handle, thread_id, \
/*explicit_timestamps=*/true, end_timestamp, thread_end_timestamp, \
base::trace_event::ThreadInstructionCount()); \
} \
} while (0)
// Implementation detail: internal macro to create static category and add
// metadata event if the category is enabled.
#define INTERNAL_TRACE_EVENT_METADATA_ADD(category_group, name, ...) \
do { \
INTERNAL_TRACE_EVENT_GET_CATEGORY_INFO(category_group); \
if (INTERNAL_TRACE_EVENT_CATEGORY_GROUP_ENABLED()) { \
TRACE_EVENT_API_ADD_METADATA_EVENT( \
INTERNAL_TRACE_EVENT_UID(category_group_enabled), name, \
##__VA_ARGS__); \
} \
} while (0)
#define INTERNAL_TRACE_LOG_MESSAGE(file, message, line) \
TRACE_EVENT_INSTANT1( \
"log", "LogMessage", \
TRACE_EVENT_FLAG_TYPED_PROTO_ARGS | TRACE_EVENT_SCOPE_THREAD, "message", \
std::make_unique<base::trace_event::LogMessage>(file, message, line))
#if BUILDFLAG(ENABLE_LOCATION_SOURCE)
// Implementation detail: internal macro to trace a task execution with the
// location where it was posted from.
//
// This implementation is for when location sources are available.
// TODO(ssid): The program counter of the current task should be added here.
#define INTERNAL_TRACE_TASK_EXECUTION(run_function, task) \
INTERNAL_TRACE_EVENT_ADD_SCOPED_WITH_FLAGS( \
"toplevel", run_function, TRACE_EVENT_FLAG_TYPED_PROTO_ARGS, "src_file", \
(task).posted_from.file_name(), "src_func", \
(task).posted_from.function_name()); \
TRACE_HEAP_PROFILER_API_SCOPED_TASK_EXECUTION INTERNAL_TRACE_EVENT_UID( \
task_event)((task).posted_from.file_name()); \
TRACE_HEAP_PROFILER_API_SCOPED_WITH_PROGRAM_COUNTER \
INTERNAL_TRACE_EVENT_UID(task_pc_event)((task).posted_from.program_counter());
#else
// TODO(http://crbug.com760702) remove file name and just pass the program
// counter to the heap profiler macro.
// TODO(ssid): The program counter of the current task should be added here.
#define INTERNAL_TRACE_TASK_EXECUTION(run_function, task) \
INTERNAL_TRACE_EVENT_ADD_SCOPED_WITH_FLAGS( \
"toplevel", run_function, TRACE_EVENT_FLAG_TYPED_PROTO_ARGS, "src", \
(task).posted_from.ToString()) \
TRACE_HEAP_PROFILER_API_SCOPED_TASK_EXECUTION INTERNAL_TRACE_EVENT_UID( \
task_event)((task).posted_from.file_name()); \
TRACE_HEAP_PROFILER_API_SCOPED_WITH_PROGRAM_COUNTER \
INTERNAL_TRACE_EVENT_UID(task_pc_event)((task).posted_from.program_counter());
#endif
namespace trace_event_internal {
// Specify these values when the corresponding argument of AddTraceEvent is not
// used.
const int kZeroNumArgs = 0;
const std::nullptr_t kGlobalScope = nullptr;
const unsigned long long kNoId = 0;
// TraceID encapsulates an ID that can either be an integer or pointer.
class BASE_EXPORT TraceID {
public:
// Can be combined with WithScope.
class LocalId {
public:
explicit LocalId(const void* raw_id)
: raw_id_(static_cast<unsigned long long>(
reinterpret_cast<uintptr_t>(raw_id))) {}
explicit LocalId(unsigned long long raw_id) : raw_id_(raw_id) {}
unsigned long long raw_id() const { return raw_id_; }
private:
unsigned long long raw_id_;
};
// Can be combined with WithScope.
class GlobalId {
public:
explicit GlobalId(unsigned long long raw_id) : raw_id_(raw_id) {}
unsigned long long raw_id() const { return raw_id_; }
private:
unsigned long long raw_id_;
};
class WithScope {
public:
WithScope(const char* scope, unsigned long long raw_id)
: scope_(scope), raw_id_(raw_id) {}
WithScope(const char* scope, LocalId local_id)
: scope_(scope), raw_id_(local_id.raw_id()) {
id_flags_ = TRACE_EVENT_FLAG_HAS_LOCAL_ID;
}
WithScope(const char* scope, GlobalId global_id)
: scope_(scope), raw_id_(global_id.raw_id()) {
id_flags_ = TRACE_EVENT_FLAG_HAS_GLOBAL_ID;
}
unsigned long long raw_id() const { return raw_id_; }
const char* scope() const { return scope_; }
unsigned int id_flags() const { return id_flags_; }
private:
const char* scope_ = nullptr;
unsigned long long raw_id_;
unsigned int id_flags_ = TRACE_EVENT_FLAG_HAS_ID;
};
TraceID(const void* raw_id) : raw_id_(static_cast<unsigned long long>(
reinterpret_cast<uintptr_t>(raw_id))) {
id_flags_ = TRACE_EVENT_FLAG_HAS_LOCAL_ID;
}
TraceID(unsigned long long raw_id) : raw_id_(raw_id) {}
TraceID(unsigned long raw_id) : raw_id_(raw_id) {}
TraceID(unsigned int raw_id) : raw_id_(raw_id) {}
TraceID(unsigned short raw_id) : raw_id_(raw_id) {}
TraceID(unsigned char raw_id) : raw_id_(raw_id) {}
TraceID(long long raw_id)
: raw_id_(static_cast<unsigned long long>(raw_id)) {}
TraceID(long raw_id)
: raw_id_(static_cast<unsigned long long>(raw_id)) {}
TraceID(int raw_id)
: raw_id_(static_cast<unsigned long long>(raw_id)) {}
TraceID(short raw_id)
: raw_id_(static_cast<unsigned long long>(raw_id)) {}
TraceID(signed char raw_id)
: raw_id_(static_cast<unsigned long long>(raw_id)) {}
TraceID(LocalId raw_id) : raw_id_(raw_id.raw_id()) {
id_flags_ = TRACE_EVENT_FLAG_HAS_LOCAL_ID;
}
TraceID(GlobalId raw_id) : raw_id_(raw_id.raw_id()) {
id_flags_ = TRACE_EVENT_FLAG_HAS_GLOBAL_ID;
}
TraceID(WithScope scoped_id)
: scope_(scoped_id.scope()),
raw_id_(scoped_id.raw_id()),
id_flags_(scoped_id.id_flags()) {}
unsigned long long raw_id() const { return raw_id_; }
const char* scope() const { return scope_; }
unsigned int id_flags() const { return id_flags_; }
private:
const char* scope_ = nullptr;
unsigned long long raw_id_;
unsigned int id_flags_ = TRACE_EVENT_FLAG_HAS_ID;
};
// These functions all internally call
// base::trace_event::TraceLog::GetInstance() then call the method with the same
// name on it. This is used to reduce the generated machine code at each
// TRACE_EVENTXXX macro call.
base::trace_event::TraceEventHandle BASE_EXPORT
AddTraceEvent(char phase,
const unsigned char* category_group_enabled,
const char* name,
const char* scope,
unsigned long long id,
base::trace_event::TraceArguments* args,
unsigned int flags);
base::trace_event::TraceEventHandle BASE_EXPORT
AddTraceEventWithBindId(char phase,
const unsigned char* category_group_enabled,
const char* name,
const char* scope,
unsigned long long id,
unsigned long long bind_id,
base::trace_event::TraceArguments* args,
unsigned int flags);
base::trace_event::TraceEventHandle BASE_EXPORT
AddTraceEventWithProcessId(char phase,
const unsigned char* category_group_enabled,
const char* name,
const char* scope,
unsigned long long id,
int process_id,
base::trace_event::TraceArguments* args,
unsigned int flags);
base::trace_event::TraceEventHandle BASE_EXPORT
AddTraceEventWithThreadIdAndTimestamp(
char phase,
const unsigned char* category_group_enabled,
const char* name,
const char* scope,
unsigned long long id,
int thread_id,
const base::TimeTicks& timestamp,
base::trace_event::TraceArguments* args,
unsigned int flags);
base::trace_event::TraceEventHandle BASE_EXPORT
AddTraceEventWithThreadIdAndTimestamp(
char phase,
const unsigned char* category_group_enabled,
const char* name,
const char* scope,
unsigned long long id,
unsigned long long bind_id,
int thread_id,
const base::TimeTicks& timestamp,
base::trace_event::TraceArguments* args,
unsigned int flags);
void BASE_EXPORT AddMetadataEvent(const unsigned char* category_group_enabled,
const char* name,
base::trace_event::TraceArguments* args,
unsigned int flags);
int BASE_EXPORT GetNumTracesRecorded();
void BASE_EXPORT
UpdateTraceEventDuration(const unsigned char* category_group_enabled,
const char* name,
base::trace_event::TraceEventHandle handle);
void BASE_EXPORT UpdateTraceEventDurationExplicit(
const unsigned char* category_group_enabled,
const char* name,
base::trace_event::TraceEventHandle handle,
int thread_id,
bool explicit_timestamps,
const base::TimeTicks& now,
const base::ThreadTicks& thread_now,
base::trace_event::ThreadInstructionCount thread_instruction_now);
// These AddTraceEvent and AddTraceEventWithThreadIdAndTimestamp template
// functions are defined here instead of in the macro, because the arg_values
// could be temporary objects, such as std::string. In order to store
// pointers to the internal c_str and pass through to the tracing API,
// the arg_values must live throughout these procedures.
template <class ARG1_TYPE>
static inline base::trace_event::TraceEventHandle
AddTraceEventWithThreadIdAndTimestamp(
char phase,
const unsigned char* category_group_enabled,
const char* name,
const char* scope,
unsigned long long id,
int thread_id,
const base::TimeTicks& timestamp,
unsigned int flags,
unsigned long long bind_id,
const char* arg1_name,
ARG1_TYPE&& arg1_val) {
base::trace_event::TraceArguments args(arg1_name,
std::forward<ARG1_TYPE>(arg1_val));
return TRACE_EVENT_API_ADD_TRACE_EVENT_WITH_THREAD_ID_AND_TIMESTAMP(
phase, category_group_enabled, name, scope, id, bind_id, thread_id,
timestamp, &args, flags);
}
template <class ARG1_TYPE, class ARG2_TYPE>
static inline base::trace_event::TraceEventHandle
AddTraceEventWithThreadIdAndTimestamp(
char phase,
const unsigned char* category_group_enabled,
const char* name,
const char* scope,
unsigned long long id,
int thread_id,
const base::TimeTicks& timestamp,
unsigned int flags,
unsigned long long bind_id,
const char* arg1_name,
ARG1_TYPE&& arg1_val,
const char* arg2_name,
ARG2_TYPE&& arg2_val) {
base::trace_event::TraceArguments args(
arg1_name, std::forward<ARG1_TYPE>(arg1_val), arg2_name,
std::forward<ARG2_TYPE>(arg2_val));
return TRACE_EVENT_API_ADD_TRACE_EVENT_WITH_THREAD_ID_AND_TIMESTAMP(
phase, category_group_enabled, name, scope, id, bind_id, thread_id,
timestamp, &args, flags);
}
static inline base::trace_event::TraceEventHandle
AddTraceEventWithThreadIdAndTimestamp(
char phase,
const unsigned char* category_group_enabled,
const char* name,
const char* scope,
unsigned long long id,
int thread_id,
const base::TimeTicks& timestamp,
unsigned int flags,
unsigned long long bind_id) {
return TRACE_EVENT_API_ADD_TRACE_EVENT_WITH_THREAD_ID_AND_TIMESTAMP(
phase, category_group_enabled, name, scope, id, bind_id, thread_id,
timestamp, nullptr, flags);
}
static inline base::trace_event::TraceEventHandle AddTraceEvent(
char phase,
const unsigned char* category_group_enabled,
const char* name,
const char* scope,
unsigned long long id,
unsigned int flags,
unsigned long long bind_id) {
const int thread_id = static_cast<int>(base::PlatformThread::CurrentId());
const base::TimeTicks now = TRACE_TIME_TICKS_NOW();
return AddTraceEventWithThreadIdAndTimestamp(
phase, category_group_enabled, name, scope, id, thread_id, now, flags,
bind_id);
}
template <class ARG1_TYPE>
static inline base::trace_event::TraceEventHandle AddTraceEvent(
char phase,
const unsigned char* category_group_enabled,
const char* name,
const char* scope,
unsigned long long id,
unsigned int flags,
unsigned long long bind_id,
const char* arg1_name,
ARG1_TYPE&& arg1_val) {
int thread_id = static_cast<int>(base::PlatformThread::CurrentId());
base::TimeTicks now = TRACE_TIME_TICKS_NOW();
return AddTraceEventWithThreadIdAndTimestamp(
phase, category_group_enabled, name, scope, id, thread_id, now, flags,
bind_id, arg1_name, std::forward<ARG1_TYPE>(arg1_val));
}
template <class ARG1_TYPE, class ARG2_TYPE>
static inline base::trace_event::TraceEventHandle AddTraceEvent(
char phase,
const unsigned char* category_group_enabled,
const char* name,
const char* scope,
unsigned long long id,
unsigned int flags,
unsigned long long bind_id,
const char* arg1_name,
ARG1_TYPE&& arg1_val,
const char* arg2_name,
ARG2_TYPE&& arg2_val) {
int thread_id = static_cast<int>(base::PlatformThread::CurrentId());
base::TimeTicks now = TRACE_TIME_TICKS_NOW();
return AddTraceEventWithThreadIdAndTimestamp(
phase, category_group_enabled, name, scope, id, thread_id, now, flags,
bind_id, arg1_name, std::forward<ARG1_TYPE>(arg1_val), arg2_name,
std::forward<ARG2_TYPE>(arg2_val));
}
template <class ARG1_TYPE>
static void AddMetadataEvent(const unsigned char* category_group_enabled,
const char* event_name,
const char* arg_name,
ARG1_TYPE&& arg_val) {
base::trace_event::TraceArguments args(arg_name,
std::forward<ARG1_TYPE>(arg_val));
trace_event_internal::AddMetadataEvent(category_group_enabled, event_name,
&args, TRACE_EVENT_FLAG_NONE);
}
// Used by TRACE_EVENTx macros. Do not use directly.
class TRACE_EVENT_API_CLASS_EXPORT ScopedTracer {
public:
ScopedTracer() = default;
~ScopedTracer() {
if (category_group_enabled_ && *category_group_enabled_) {
TRACE_EVENT_API_UPDATE_TRACE_EVENT_DURATION(category_group_enabled_,
name_, event_handle_);
}
}
void Initialize(const unsigned char* category_group_enabled,
const char* name,
base::trace_event::TraceEventHandle event_handle) {
category_group_enabled_ = category_group_enabled;
name_ = name;
event_handle_ = event_handle;
}
private:
// NOTE: Only initialize the first member to reduce generated code size,
// since there is no point in initializing the other members if Initialize()
// is never called.
const unsigned char* category_group_enabled_ = nullptr;
const char* name_;
base::trace_event::TraceEventHandle event_handle_;
};
// Used by TRACE_EVENT_BINARY_EFFICIENTx macro. Do not use directly.
class TRACE_EVENT_API_CLASS_EXPORT ScopedTraceBinaryEfficient {
public:
ScopedTraceBinaryEfficient(const char* category_group, const char* name);
~ScopedTraceBinaryEfficient();
private:
const unsigned char* category_group_enabled_;
const char* name_;
base::trace_event::TraceEventHandle event_handle_;
};
// This macro generates less code then TRACE_EVENT0 but is also
// slower to execute when tracing is off. It should generally only be
// used with code that is seldom executed or conditionally executed
// when debugging.
// For now the category_group must be "gpu".
#define TRACE_EVENT_BINARY_EFFICIENT0(category_group, name) \
trace_event_internal::ScopedTraceBinaryEfficient \
INTERNAL_TRACE_EVENT_UID(scoped_trace)(category_group, name);
} // namespace trace_event_internal
namespace base {
namespace trace_event {
template <typename IDType, const char* category>
class TraceScopedTrackableObject {
public:
TraceScopedTrackableObject(const char* name, IDType id)
: name_(name), id_(id) {
TRACE_EVENT_OBJECT_CREATED_WITH_ID(category, name_, id_);
}
template <typename ArgType> void snapshot(ArgType snapshot) {
TRACE_EVENT_OBJECT_SNAPSHOT_WITH_ID(category, name_, id_, snapshot);
}
~TraceScopedTrackableObject() {
TRACE_EVENT_OBJECT_DELETED_WITH_ID(category, name_, id_);
}
private:
const char* name_;
IDType id_;
DISALLOW_COPY_AND_ASSIGN(TraceScopedTrackableObject);
};
} // namespace trace_event
} // namespace base
#endif // BASE_TRACE_EVENT_TRACE_EVENT_H_
Reference in New Issue Copy Permalink