summaryrefslogblamecommitdiffstats
blob: bd6015e7928c2b638f990cef2c3ee597a6dc3150 (plain) (tree)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18

















                                                                           

                            

                 


                          

                                
 

                   
                        

 

                                                               
                      

 
                         

 

                                                        
 
                                                                                            

                                                               
     

                                                                            
     

 



                                                                                                 
 


                                                                    



                                                       







                                               

                                                     
     

 
                       
/*
 * Copyright (C) 2007 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#define LOG_TAG "CallStack"

#include <utils/CallStack.h>

#include <memory>

#include <utils/Printer.h>
#include <utils/Errors.h>
#include <utils/Log.h>

#include <backtrace/Backtrace.h>

namespace android {

CallStack::CallStack() {
}

CallStack::CallStack(const char* logtag, int32_t ignoreDepth) {
    this->update(ignoreDepth+1);
    this->log(logtag);
}

CallStack::~CallStack() {
}

void CallStack::update(int32_t ignoreDepth, pid_t tid) {
    mFrameLines.clear();

    std::unique_ptr<Backtrace> backtrace(Backtrace::Create(BACKTRACE_CURRENT_PROCESS, tid));
    if (!backtrace->Unwind(ignoreDepth)) {
        ALOGW("%s: Failed to unwind callstack.", __FUNCTION__);
    }
    for (size_t i = 0; i < backtrace->NumFrames(); i++) {
      mFrameLines.push_back(String8(backtrace->FormatFrameData(i).c_str()));
    }
}

void CallStack::log(const char* logtag, android_LogPriority priority, const char* prefix) const {
    LogPrinter printer(logtag, priority, prefix, /*ignoreBlankLines*/false);
    print(printer);
}

void CallStack::dump(int fd, int indent, const char* prefix) const {
    FdPrinter printer(fd, indent, prefix);
    print(printer);
}

String8 CallStack::toString(const char* prefix) const {
    String8 str;

    String8Printer printer(&str, prefix);
    print(printer);

    return str;
}

void CallStack::print(Printer& printer) const {
    for (size_t i = 0; i < mFrameLines.size(); i++) {
        printer.printLine(mFrameLines[i]);
    }
}

}; // namespace android