| // Copyright 2015 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 SkTraceEventCommon_DEFINED |
| #define SkTraceEventCommon_DEFINED |
| |
| // Trace events are for tracking application performance and resource usage. |
| // Macros are provided to track: |
| // Duration of scoped regions |
| // Instantaneous events |
| // Counters |
| // |
| // The first two arguments to all TRACE macros are the category and name. Both are strings, and |
| // must have application lifetime (statics or literals). The same applies to arg_names, and string |
| // argument values. However, you can force a copy of a string argument value with TRACE_STR_COPY: |
| // TRACE_EVENT1("category", "name", "arg1", "literal string is only referenced"); |
| // TRACE_EVENT1("category", "name", "arg1", TRACE_STR_COPY("string will be copied")); |
| // |
| // |
| // Categories are used to group events, and |
| // can be enabled or disabled by the tracing framework. The trace system will automatically add the |
| // process id, thread id, and microsecond timestamp to all events. |
| // |
| // |
| // The TRACE_EVENT[0-2] macros trace the duration of entire scopes: |
| // void doSomethingCostly() { |
| // TRACE_EVENT0("MY_SUBSYSTEM", "doSomethingCostly"); |
| // ... |
| // } |
| // |
| // Additional parameters can be associated with an event: |
| // void doSomethingCostly2(int howMuch) { |
| // TRACE_EVENT1("MY_SUBSYSTEM", "doSomethingCostly", "howMuch", howMuch); |
| // ... |
| // } |
| // |
| // |
| // Trace event also supports counters, which is a way to track a quantity as it varies over time. |
| // Counters are created with the following macro: |
| // TRACE_COUNTER1("MY_SUBSYSTEM", "myCounter", g_myCounterValue); |
| // |
| // Counters are process-specific. The macro itself can be issued from any thread, however. |
| // |
| // Sometimes, you want to track two counters at once. You can do this with two counter macros: |
| // TRACE_COUNTER1("MY_SUBSYSTEM", "myCounter0", g_myCounterValue[0]); |
| // TRACE_COUNTER1("MY_SUBSYSTEM", "myCounter1", g_myCounterValue[1]); |
| // Or you can do it with a combined macro: |
| // TRACE_COUNTER2("MY_SUBSYSTEM", "myCounter", |
| // "bytesPinned", g_myCounterValue[0], |
| // "bytesAllocated", g_myCounterValue[1]); |
| // The tracing UI will show these counters in a single graph, as a summed area chart. |
| |
| #if defined(TRACE_EVENT0) |
| #error "Another copy of this file has already been included." |
| #endif |
| |
| // Records a pair of begin and end events called "name" for the current scope, with 0, 1 or 2 |
| // associated arguments. If the category is not enabled, then this does nothing. |
| #define TRACE_EVENT0(category_group, name) \ |
| INTERNAL_TRACE_EVENT_ADD_SCOPED(category_group, name) |
| |
| #define TRACE_EVENT1(category_group, name, arg1_name, arg1_val) \ |
| INTERNAL_TRACE_EVENT_ADD_SCOPED(category_group, name, arg1_name, arg1_val) |
| |
| #define TRACE_EVENT2(category_group, name, arg1_name, arg1_val, arg2_name, arg2_val) \ |
| INTERNAL_TRACE_EVENT_ADD_SCOPED(category_group, name, arg1_name, arg1_val, arg2_name, arg2_val) |
| |
| // Records a single event called "name" immediately, with 0, 1 or 2 associated arguments. If the |
| // category is not enabled, then this does nothing. |
| #define TRACE_EVENT_INSTANT0(category_group, name, scope) \ |
| INTERNAL_TRACE_EVENT_ADD(TRACE_EVENT_PHASE_INSTANT, category_group, name, \ |
| TRACE_EVENT_FLAG_NONE | scope) |
| |
| #define TRACE_EVENT_INSTANT1(category_group, name, scope, arg1_name, arg1_val) \ |
| INTERNAL_TRACE_EVENT_ADD(TRACE_EVENT_PHASE_INSTANT, category_group, name, \ |
| TRACE_EVENT_FLAG_NONE | scope, arg1_name, arg1_val) |
| |
| #define TRACE_EVENT_INSTANT2(category_group, name, scope, arg1_name, arg1_val, \ |
| arg2_name, arg2_val) \ |
| INTERNAL_TRACE_EVENT_ADD(TRACE_EVENT_PHASE_INSTANT, category_group, name, \ |
| TRACE_EVENT_FLAG_NONE | scope, arg1_name, arg1_val, \ |
| arg2_name, arg2_val) |
| |
| // Records the value of a counter called "name" immediately. Value |
| // must be representable as a 32 bit integer. |
| #define TRACE_COUNTER1(category_group, name, value) \ |
| INTERNAL_TRACE_EVENT_ADD(TRACE_EVENT_PHASE_COUNTER, category_group, name, \ |
| TRACE_EVENT_FLAG_NONE, "value", \ |
| static_cast<int>(value)) |
| |
| // Records the values of a multi-parted counter called "name" immediately. |
| // The UI will treat value1 and value2 as parts of a whole, displaying their |
| // values as a stacked-bar chart. |
| #define TRACE_COUNTER2(category_group, name, value1_name, value1_val, \ |
| value2_name, value2_val) \ |
| INTERNAL_TRACE_EVENT_ADD(TRACE_EVENT_PHASE_COUNTER, category_group, name, \ |
| TRACE_EVENT_FLAG_NONE, value1_name, \ |
| static_cast<int>(value1_val), value2_name, \ |
| static_cast<int>(value2_val)) |
| |
| // Macro to efficiently determine if a given category group is enabled. |
| #define TRACE_EVENT_CATEGORY_GROUP_ENABLED(category_group, ret) \ |
| do { \ |
| INTERNAL_TRACE_EVENT_GET_CATEGORY_INFO(category_group); \ |
| if (INTERNAL_TRACE_EVENT_CATEGORY_GROUP_ENABLED_FOR_RECORDING_MODE()) { \ |
| *ret = true; \ |
| } else { \ |
| *ret = false; \ |
| } \ |
| } while (0) |
| |
| |
| // Phase indicates the nature of an event entry. E.g. part of a begin/end pair. |
| #define TRACE_EVENT_PHASE_BEGIN ('B') |
| #define TRACE_EVENT_PHASE_END ('E') |
| #define TRACE_EVENT_PHASE_COMPLETE ('X') |
| #define TRACE_EVENT_PHASE_INSTANT ('I') |
| #define TRACE_EVENT_PHASE_ASYNC_BEGIN ('S') |
| #define TRACE_EVENT_PHASE_ASYNC_END ('F') |
| #define TRACE_EVENT_PHASE_COUNTER ('C') |
| |
| // Flags for changing the behavior of TRACE_EVENT_API_ADD_TRACE_EVENT. |
| #define TRACE_EVENT_FLAG_NONE (static_cast<unsigned int>(0)) |
| #define TRACE_EVENT_FLAG_COPY (static_cast<unsigned int>(1 << 0)) |
| #define TRACE_EVENT_FLAG_HAS_ID (static_cast<unsigned int>(1 << 1)) |
| #define TRACE_EVENT_FLAG_MANGLE_ID (static_cast<unsigned int>(1 << 2)) |
| #define TRACE_EVENT_FLAG_SCOPE_OFFSET (static_cast<unsigned int>(1 << 3)) |
| #define TRACE_EVENT_FLAG_SCOPE_EXTRA (static_cast<unsigned int>(1 << 4)) |
| #define TRACE_EVENT_FLAG_EXPLICIT_TIMESTAMP (static_cast<unsigned int>(1 << 5)) |
| #define TRACE_EVENT_FLAG_ASYNC_TTS (static_cast<unsigned int>(1 << 6)) |
| #define TRACE_EVENT_FLAG_BIND_TO_ENCLOSING (static_cast<unsigned int>(1 << 7)) |
| #define TRACE_EVENT_FLAG_FLOW_IN (static_cast<unsigned int>(1 << 8)) |
| #define TRACE_EVENT_FLAG_FLOW_OUT (static_cast<unsigned int>(1 << 9)) |
| #define TRACE_EVENT_FLAG_HAS_CONTEXT_ID (static_cast<unsigned int>(1 << 10)) |
| |
| #define TRACE_EVENT_FLAG_SCOPE_MASK \ |
| (static_cast<unsigned int>(TRACE_EVENT_FLAG_SCOPE_OFFSET | \ |
| TRACE_EVENT_FLAG_SCOPE_EXTRA)) |
| |
| // Type values for identifying types in the TraceValue union. |
| #define TRACE_VALUE_TYPE_BOOL (static_cast<unsigned char>(1)) |
| #define TRACE_VALUE_TYPE_UINT (static_cast<unsigned char>(2)) |
| #define TRACE_VALUE_TYPE_INT (static_cast<unsigned char>(3)) |
| #define TRACE_VALUE_TYPE_DOUBLE (static_cast<unsigned char>(4)) |
| #define TRACE_VALUE_TYPE_POINTER (static_cast<unsigned char>(5)) |
| #define TRACE_VALUE_TYPE_STRING (static_cast<unsigned char>(6)) |
| #define TRACE_VALUE_TYPE_COPY_STRING (static_cast<unsigned char>(7)) |
| #define TRACE_VALUE_TYPE_CONVERTABLE (static_cast<unsigned char>(8)) |
| |
| // Enum reflecting the scope of an INSTANT event. Must fit within TRACE_EVENT_FLAG_SCOPE_MASK. |
| #define TRACE_EVENT_SCOPE_GLOBAL (static_cast<unsigned char>(0 << 3)) |
| #define TRACE_EVENT_SCOPE_PROCESS (static_cast<unsigned char>(1 << 3)) |
| #define TRACE_EVENT_SCOPE_THREAD (static_cast<unsigned char>(2 << 3)) |
| |
| #define TRACE_EVENT_SCOPE_NAME_GLOBAL ('g') |
| #define TRACE_EVENT_SCOPE_NAME_PROCESS ('p') |
| #define TRACE_EVENT_SCOPE_NAME_THREAD ('t') |
| |
| #endif // SkTraceEventCommon_DEFINED |
