stackwalker_linux.cpp

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//  Copyright (c) 2003-2021 Xsens Technologies B.V. or subsidiaries worldwide.
//  All rights reserved.
//  
//  Redistribution and use in source and binary forms, with or without modification,
//  are permitted provided that the following conditions are met:
//  
//  1.  Redistributions of source code must retain the above copyright notice,
//      this list of conditions, and the following disclaimer.
//  
//  2.  Redistributions in binary form must reproduce the above copyright notice,
//      this list of conditions, and the following disclaimer in the documentation
//      and/or other materials provided with the distribution.
//  
//  3.  Neither the names of the copyright holders nor the names of their contributors
//      may be used to endorse or promote products derived from this software without
//      specific prior written permission.
//  
//  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
//  EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
//  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
//  THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
//  SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT 
//  OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
//  HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY OR
//  TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
//  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.THE LAWS OF THE NETHERLANDS 
//  SHALL BE EXCLUSIVELY APPLICABLE AND ANY DISPUTES SHALL BE FINALLY SETTLED UNDER THE RULES 
//  OF ARBITRATION OF THE INTERNATIONAL CHAMBER OF COMMERCE IN THE HAGUE BY ONE OR MORE 
//  ARBITRATORS APPOINTED IN ACCORDANCE WITH SAID RULES.
//  
 
 
//  Copyright (c) 2003-2021 Xsens Technologies B.V. or subsidiaries worldwide.
//  All rights reserved.
//  
//  Redistribution and use in source and binary forms, with or without modification,
//  are permitted provided that the following conditions are met:
//  
//  1.  Redistributions of source code must retain the above copyright notice,
//      this list of conditions, and the following disclaimer.
//  
//  2.  Redistributions in binary form must reproduce the above copyright notice,
//      this list of conditions, and the following disclaimer in the documentation
//      and/or other materials provided with the distribution.
//  
//  3.  Neither the names of the copyright holders nor the names of their contributors
//      may be used to endorse or promote products derived from this software without
//      specific prior written permission.
//  
//  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
//  EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
//  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
//  THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
//  SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT 
//  OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
//  HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY OR
//  TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
//  SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.THE LAWS OF THE NETHERLANDS 
//  SHALL BE EXCLUSIVELY APPLICABLE AND ANY DISPUTES SHALL BE FINALLY SETTLED UNDER THE RULES 
//  OF ARBITRATION OF THE INTERNATIONAL CHAMBER OF COMMERCE IN THE HAGUE BY ONE OR MORE 
//  ARBITRATORS APPOINTED IN ACCORDANCE WITH SAID RULES.
//  
 
#include "stackwalker_linux.h"
 
#include <stdlib.h>
 
#ifdef ANDROID
        #include <android/log.h>
#elif defined(USING_UNWIND_LIB)
        #define UNW_LOCAL_ONLY
        #include <libunwind.h>
        #include <cxxabi.h>
        #include <cstdio>
#endif
 
#ifdef __arm__
        #define UNW_PRINTF_POINTER "0x%x: "
        #define UNW_PRINTF_NAME_AND_POINTER " (%s+0x%x)"
#else
        #include <stdint.h>
        #if UINTPTR_MAX == 0xffffffff
                /* 32-bit */
                #define UNW_PRINTF_POINTER "0x%x: "
                #define UNW_PRINTF_NAME_AND_POINTER " (%s+0x%x)"
        #elif UINTPTR_MAX == 0xffffffffffffffff
                /* 64-bit */
                #define UNW_PRINTF_POINTER "0x%lx: "
                #define UNW_PRINTF_NAME_AND_POINTER " (%s+0x%lx)"
        #else
                /* wtf */
        #endif
#endif
 
StackWalker::StackWalker()
{
}
 
StackWalker::~StackWalker()
{
}
 
void StackWalker::ShowCallstack()
{
#ifdef ANDROID
        __android_log_print(ANDROID_LOG_WARN, "stackwalker", "stack trace is not available");
#elif defined(USING_UNWIND_LIB)
        unw_context_t context;
        unw_getcontext(&context);
 
        unw_cursor_t cursor;
        unw_init_local(&cursor, &context);
 
        while (unw_step(&cursor) > 0)
        {
                unw_word_t instructionPointer;
                unw_get_reg(&cursor, UNW_REG_IP, &instructionPointer);
 
                if (instructionPointer == 0)
                        break;
 
                static const int logLineSize = 256;
                char logLine[logLineSize];
                int offset = std::snprintf(logLine, logLineSize, UNW_PRINTF_POINTER, instructionPointer);
 
                char symbol[logLineSize - 20];
                unw_word_t symbolOffset;
                if (unw_get_proc_name(&cursor, symbol, sizeof(symbol), &symbolOffset) == 0)
                {
                        int status;
                        char* demangled = abi::__cxa_demangle(symbol, nullptr, nullptr, &status);
 
                        char* symbolName = symbol;
                        if (status == 0)
                                symbolName = demangled;
 
                        std::snprintf(&logLine[offset], logLineSize - offset, UNW_PRINTF_NAME_AND_POINTER, symbolName, symbolOffset);
                        std::free(demangled);
                }
                else
                        std::snprintf(&logLine[offset], logLineSize - offset, " (unable to retrieve symbol name)");
 
                OnOutput(logLine);
        }
#else
        OnOutput("Stack trace is not available");
#endif
}