1 /* 2 * Copyright (C) 2018 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef INCLUDE_PERFETTO_EXT_BASE_WATCHDOG_H_ 18 #define INCLUDE_PERFETTO_EXT_BASE_WATCHDOG_H_ 19 20 #include <functional> 21 22 #include "perfetto/base/build_config.h" 23 24 // The POSIX watchdog is only supported on Linux and Android in non-embedder 25 // builds. 26 #if PERFETTO_BUILDFLAG(PERFETTO_WATCHDOG) 27 #include "perfetto/ext/base/watchdog_posix.h" 28 #else 29 #include "perfetto/ext/base/watchdog_noop.h" 30 #endif 31 32 namespace perfetto { 33 namespace base { 34 35 // Make the limits more relaxed on desktop, where multi-GB traces are likely. 36 // Multi-GB traces can take bursts of cpu time to write into disk at the end of 37 // the trace. 38 #if PERFETTO_BUILDFLAG(PERFETTO_OS_ANDROID) 39 constexpr uint32_t kWatchdogDefaultCpuLimit = 75; 40 constexpr uint32_t kWatchdogDefaultCpuWindow = 5 * 60 * 1000; // 5 minutes. 41 #else 42 constexpr uint32_t kWatchdogDefaultCpuLimit = 90; 43 constexpr uint32_t kWatchdogDefaultCpuWindow = 10 * 60 * 1000; // 10 minutes. 44 #endif 45 46 // The default memory margin we give to our processes. This is used as as a 47 // constant to put on top of the trace buffers. 48 constexpr uint64_t kWatchdogDefaultMemorySlack = 32 * 1024 * 1024; // 32 MiB. 49 constexpr uint32_t kWatchdogDefaultMemoryWindow = 30 * 1000; // 30 seconds. 50 RunTaskWithWatchdogGuard(const std::function<void ()> & task)51inline void RunTaskWithWatchdogGuard(const std::function<void()>& task) { 52 // Maximum time a single task can take in a TaskRunner before the 53 // program suicides. 54 constexpr int64_t kWatchdogMillis = 30000; // 30s 55 56 Watchdog::Timer handle = 57 base::Watchdog::GetInstance()->CreateFatalTimer(kWatchdogMillis); 58 task(); 59 60 // Suppress unused variable warnings in the client library amalgamated build. 61 (void)kWatchdogDefaultCpuLimit; 62 (void)kWatchdogDefaultCpuWindow; 63 (void)kWatchdogDefaultMemorySlack; 64 (void)kWatchdogDefaultMemoryWindow; 65 } 66 67 } // namespace base 68 } // namespace perfetto 69 70 #endif // INCLUDE_PERFETTO_EXT_BASE_WATCHDOG_H_ 71