platform_system_core/libcutils/trace-host.cpp
Florian Mayer b06766cbbf Use sequence number to check if to reload atrace tags.
This is to deprecate the sysprop change notification in atrace.
After this change, processes will only update their enabled tags
at the first atrace event. Previously we reloaded the tags as a
result of the sysprop changed Binder notification, which woke up
every process in the system.

Test: adb shell su root atrace -t 10 ss
Test: #define ATRACE_SHMEM 0; adb shell su root atrace -t 10 ss

Bug: 137366208

Change-Id: Idffba5fd4ba23fba2f6b9f594365df68ac0c1626
2020-01-13 17:02:58 +00:00

39 lines
1.4 KiB
C++

/*
* Copyright (C) 2012 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 <cutils/trace.h>
atomic_bool atrace_is_ready = ATOMIC_VAR_INIT(true);
int atrace_marker_fd = -1;
uint64_t atrace_enabled_tags = 0;
void atrace_set_debuggable(bool /*debuggable*/) {}
void atrace_set_tracing_enabled(bool /*enabled*/) {}
void atrace_update_tags() { }
void atrace_setup() { }
void atrace_begin_body(const char* /*name*/) {}
void atrace_end_body() { }
void atrace_async_begin_body(const char* /*name*/, int32_t /*cookie*/) {}
void atrace_async_end_body(const char* /*name*/, int32_t /*cookie*/) {}
void atrace_int_body(const char* /*name*/, int32_t /*value*/) {}
void atrace_int64_body(const char* /*name*/, int64_t /*value*/) {}
#if ATRACE_SHMEM
void atrace_init() {}
uint64_t atrace_get_enabled_tags()
{
return ATRACE_TAG_NOT_READY;
}
#endif