1 /* 2 * Copyright (c) 2024-2025 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16 #ifndef HITRACE_COMMON_DEFINE_H 17 #define HITRACE_COMMON_DEFINE_H 18 19 #include <string> 20 21 #define EXPECTANTLY(exp) (__builtin_expect(!!(exp), true)) 22 #define UNEXPECTANTLY(exp) (__builtin_expect(!!(exp), false)) 23 #define UNUSED_PARAM __attribute__((__unused__)) 24 25 #ifndef PAGE_SIZE 26 constexpr size_t PAGE_SIZE = 4096; 27 #endif 28 constexpr uint64_t S_TO_NS = 1000000000; 29 constexpr uint64_t MS_TO_NS = 1000000; 30 constexpr uint64_t S_TO_MS = 1000; 31 32 constexpr int DEFAULT_FILE_SIZE = 100 * 1024; 33 34 static const char* TRACE_TAG_ENABLE_FLAGS = "debug.hitrace.tags.enableflags"; 35 static const char* TRACE_KEY_APP_PID = "debug.hitrace.app_pid"; 36 static const char* TRACE_LEVEL_THRESHOLD = "persist.hitrace.level.threshold"; 37 38 static const std::string DEBUGFS_TRACING_DIR = "/sys/kernel/debug/tracing/"; 39 static const std::string TRACEFS_DIR = "/sys/kernel/tracing/"; 40 static const char* TRACING_ON_NODE = "tracing_on"; 41 static const char* TRACE_MARKER_NODE = "trace_marker"; 42 static const char* TRACE_NODE = "trace"; 43 static const char* TRACE_BUFFER_SIZE_NODE = "buffer_size_kb"; 44 45 static const std::string TRACE_FILE_DEFAULT_DIR = "/data/log/hitrace/"; 46 static const char* TRACE_SAVED_EVENTS_FORMAT = "saved_events_format"; 47 #endif // HITRACE_COMMON_DEFINE_H