1/* 2 * Copyright © 2021 Google, Inc. 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice (including the next 12 * paragraph) shall be included in all copies or substantial portions of the 13 * Software. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 20 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 21 * SOFTWARE. 22 */ 23 24#include <perfetto.h> 25 26#include "c11/threads.h" 27 28#include "u_perfetto.h" 29 30static void 31util_perfetto_fini(void) 32{ 33 perfetto::Tracing::Shutdown(); 34} 35 36static void 37util_perfetto_init_once(void) 38{ 39 // Connects to the system tracing service 40 perfetto::TracingInitArgs args; 41 args.backends = perfetto::kSystemBackend; 42 perfetto::Tracing::Initialize(args); 43 atexit(&util_perfetto_fini); 44} 45 46static once_flag perfetto_once_flag = ONCE_FLAG_INIT; 47 48void 49util_perfetto_init(void) 50{ 51 call_once(&perfetto_once_flag, util_perfetto_init_once); 52} 53