1 /* 2 * Copyright 2021 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 #pragma once 18 19 #include <cutils/trace.h> 20 #include <utils/Trace.h> 21 22 #define ATRACE_FORMAT(fmt, ...) \ 23 TraceUtils::TraceEnder __traceEnder = \ 24 (TraceUtils::atraceFormatBegin(fmt, ##__VA_ARGS__), TraceUtils::TraceEnder()) 25 26 #define ATRACE_FORMAT_BEGIN(fmt, ...) TraceUtils::atraceFormatBegin(fmt, ##__VA_ARGS__) 27 28 namespace android { 29 30 class TraceUtils { 31 public: 32 class TraceEnder { 33 public: ~TraceEnder()34 ~TraceEnder() { ATRACE_END(); } 35 }; 36 atraceFormatBegin(const char * fmt,...)37 static void atraceFormatBegin(const char* fmt, ...) { 38 if (CC_LIKELY(!ATRACE_ENABLED())) return; 39 40 const int BUFFER_SIZE = 256; 41 va_list ap; 42 char buf[BUFFER_SIZE]; 43 44 va_start(ap, fmt); 45 vsnprintf(buf, BUFFER_SIZE, fmt, ap); 46 va_end(ap); 47 48 ATRACE_BEGIN(buf); 49 } 50 51 }; // class TraceUtils 52 53 } /* namespace android */ 54