1 /* 2 * Copyright (C) 2017 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 <log/log.h> 20 #include <backtrace/Backtrace.h> 21 #include <memory> 22 23 class CallStack { 24 public: 25 // Create a callstack with the current thread's stack trace. 26 // Immediately dump it to logcat using the given logtag. log(const char * logtag)27 static void log(const char* logtag) noexcept { 28 std::unique_ptr<Backtrace> backtrace( 29 Backtrace::Create(BACKTRACE_CURRENT_PROCESS, BACKTRACE_CURRENT_THREAD)); 30 if (backtrace->Unwind(2)) { 31 for (size_t i = 0, c = backtrace->NumFrames(); i < c; i++) { 32 __android_log_print(ANDROID_LOG_DEBUG, logtag, "%s", 33 backtrace->FormatFrameData(i).c_str()); 34 } 35 } 36 } 37 }; 38 39