Mathias Agopian
ca3ff7e08e
Perfetto has significantly less overhead. The User facing API is
mostly unchanged:
Here are the differences:
- SYSTRACE_ENABLE() does nothing on ANDROID, initializes systraces on darwin.
- SYSTRACE_DISABLE() is removed.
- A new "gltfio" tag is added.
- SYSTRACE_TAG *must* be defined before including `utils/Systrace.h`
- `utils/Systrace.h` should not be used from a public header
- the new SYSTRACE_TAG_DISABLE disables systrace at compile time
For android a data source MUST be created in the perfetto config:
```
data_sources {
config {
name: "track_event"
track_event_config {
enabled_categories: ["filament", "jobsystem", "gltfio"]
disabled_categories: "*"
}
}
}
```
This can for example be added to AGI's custom/advanced config.
FIXES=[407572663]
83 lines
2.3 KiB
C++
83 lines
2.3 KiB
C++
/*
|
|
* Copyright (C) 2023 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.
|
|
*/
|
|
|
|
#include <utils/darwin/Systrace.h>
|
|
|
|
#ifndef FILAMENT_APPLE_SYSTRACE
|
|
# define FILAMENT_APPLE_SYSTRACE 0
|
|
#endif
|
|
|
|
#if FILAMENT_APPLE_SYSTRACE
|
|
|
|
#include <atomic>
|
|
#include <stack>
|
|
#include <stdint.h>
|
|
#include <pthread.h>
|
|
|
|
static pthread_once_t atrace_once_control = PTHREAD_ONCE_INIT;
|
|
|
|
thread_local std::stack<const char*> ___tracerSections;
|
|
|
|
namespace utils {
|
|
namespace details {
|
|
|
|
Systrace::GlobalState Systrace::sGlobalState = {};
|
|
|
|
void Systrace::init_once() noexcept {
|
|
GlobalState& s = sGlobalState;
|
|
|
|
s.systraceLog = os_log_create("com.google.filament", "systrace");
|
|
s.frameIdLog = os_log_create("com.google.filament", "frameId");
|
|
}
|
|
|
|
void Systrace::setup() noexcept {
|
|
pthread_once(&atrace_once_control, init_once);
|
|
}
|
|
|
|
void Systrace::enable(uint32_t tag) noexcept {
|
|
setup();
|
|
uint32_t const mask = 1 << tag;
|
|
sGlobalState.isTracingEnabled.fetch_or(mask, std::memory_order_relaxed);
|
|
}
|
|
|
|
void Systrace::disable(uint32_t tag) noexcept {
|
|
uint32_t const mask = 1 << tag;
|
|
sGlobalState.isTracingEnabled.fetch_and(~mask, std::memory_order_relaxed);
|
|
}
|
|
|
|
// Unfortunately, this generates quite a bit of code because reading a global is not
|
|
// trivial. For this reason, we do not inline this method.
|
|
bool Systrace::isTracingEnabled(uint32_t tag) noexcept {
|
|
if (tag) {
|
|
setup();
|
|
uint32_t const mask = 1 << tag;
|
|
return bool(sGlobalState.isTracingEnabled.load(std::memory_order_relaxed) & mask);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
// ------------------------------------------------------------------------------------------------
|
|
|
|
void Systrace::init(uint32_t tag) noexcept {
|
|
// must be called first
|
|
mIsTracingEnabled = isTracingEnabled(tag);
|
|
}
|
|
|
|
} // namespace details
|
|
} // namespace utils
|
|
|
|
#endif // FILAMENT_APPLE_SYSTRACE
|