Make backtrace work on windows
This commit is contained in:
Sebastian Messmer
parent
2299867320
commit
efbe606961
@ -37,7 +37,8 @@ set(SOURCES
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data/DataFixture.cpp
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data/DataUtils.cpp
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data/Data.cpp
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assert/backtrace.cpp
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assert/backtrace_nonwindows.cpp
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assert/backtrace_windows.cpp
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assert/AssertFailed.cpp
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system/get_total_memory.cpp
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system/homedir.cpp
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@ -6,6 +6,9 @@
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namespace cpputils {
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std::string backtrace();
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//TODO Refactor (for example: RAII or at least try{}finally{} instead of free())
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//TODO Use the following? https://github.com/bombela/backward-cpp
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void showBacktraceOnSigSegv();
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}
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@ -1,3 +1,5 @@
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#if !defined(_MSC_VER)
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#include "backtrace.h"
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#include <execinfo.h>
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#include <signal.h>
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@ -12,12 +14,9 @@ using std::string;
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using std::ostringstream;
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using namespace cpputils::logging;
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//TODO Use the following? https://github.com/bombela/backward-cpp
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namespace cpputils {
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//TODO Refactor (for example: RAII or at least try{}finally{} instead of free())
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namespace {
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std::string demangle(const string &mangledName) {
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string result;
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int status = -10;
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@ -37,7 +36,8 @@ namespace cpputils {
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if (startMangledName == string::npos || endMangledName == string::npos) {
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return backtraceLine;
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}
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return demangle(backtraceLine.substr(startMangledName+1, endMangledName-startMangledName-1)) + ": (" + backtraceLine.substr(0, startMangledName) + backtraceLine.substr(endMangledName);
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return demangle(backtraceLine.substr(startMangledName + 1, endMangledName - startMangledName - 1)) + ": (" +
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backtraceLine.substr(0, startMangledName) + backtraceLine.substr(endMangledName);
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}
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string backtrace_to_string(void *array[], size_t size) {
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@ -49,20 +49,29 @@ namespace cpputils {
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free(ptr);
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return result.str();
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}
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}
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string backtrace() {
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constexpr unsigned int MAX_SIZE = 100;
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void *array[MAX_SIZE];
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size_t size = ::backtrace(array, MAX_SIZE);
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return backtrace_to_string(array, size);
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}
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string backtrace() {
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constexpr unsigned int MAX_SIZE = 100;
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void *array[MAX_SIZE];
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size_t size = ::backtrace(array, MAX_SIZE);
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return backtrace_to_string(array, size);
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}
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namespace {
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void sigsegv_handler(int) {
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LOG(ERROR, "SIGSEGV\n{}", backtrace());
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exit(1);
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}
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void showBacktraceOnSigSegv() {
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signal(SIGSEGV, sigsegv_handler);
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}
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}
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void showBacktraceOnSigSegv() {
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auto result = signal(SIGSEGV, sigsegv_handler);
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if (SIG_ERR == result) {
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LOG(ERROR, "Failed to set sigsegv signal handler. Errno: {}", errno);
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}
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}
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}
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#endif
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127
src/cpp-utils/assert/backtrace_windows.cpp
Normal file
127
src/cpp-utils/assert/backtrace_windows.cpp
Normal file
@ -0,0 +1,127 @@
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#if defined(_MSC_VER)
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#include "backtrace.h"
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#include <signal.h>
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#include <iostream>
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#include <string>
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#include <sstream>
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#include "../logging/logging.h"
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#include <Windows.h>
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#include <Dbghelp.h>
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using std::string;
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using std::ostringstream;
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using namespace cpputils::logging;
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namespace cpputils {
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namespace {
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std::string backtrace_to_string(CONTEXT* context_record) {
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std::ostringstream backtrace;
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HANDLE process = GetCurrentProcess();
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if (!::SymInitialize(process, NULL, TRUE)) {
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DWORD error = GetLastError();
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backtrace << "[Can't get backtrace. SymInitialize failed with error code " << std::dec << error << "]\n";
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}
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else {
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// Initialize stack walking.
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STACKFRAME64 stack_frame;
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memset(&stack_frame, 0, sizeof(stack_frame));
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#if defined(_WIN64)
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int machine_type = IMAGE_FILE_MACHINE_AMD64;
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stack_frame.AddrPC.Offset = context_record->Rip;
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stack_frame.AddrFrame.Offset = context_record->Rbp;
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stack_frame.AddrStack.Offset = context_record->Rsp;
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#else
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int machine_type = IMAGE_FILE_MACHINE_I386;
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stack_frame.AddrPC.Offset = context_record->Eip;
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stack_frame.AddrFrame.Offset = context_record->Ebp;
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stack_frame.AddrStack.Offset = context_record->Esp;
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#endif
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stack_frame.AddrPC.Mode = AddrModeFlat;
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stack_frame.AddrFrame.Mode = AddrModeFlat;
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stack_frame.AddrStack.Mode = AddrModeFlat;
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auto symbol_storage = std::make_unique<char[]>(sizeof(SYMBOL_INFO) + MAX_SYM_NAME * sizeof(TCHAR));
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PSYMBOL_INFO symbol = (PSYMBOL_INFO)symbol_storage.get();
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symbol->SizeOfStruct = sizeof(SYMBOL_INFO);
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symbol->MaxNameLen = MAX_SYM_NAME;
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int i = 0;
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while (StackWalk64(machine_type,
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GetCurrentProcess(),
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GetCurrentThread(),
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&stack_frame,
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context_record,
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nullptr,
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&SymFunctionTableAccess64,
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&SymGetModuleBase64,
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nullptr)) {
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backtrace << "#" << (i++) << " ";
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DWORD64 displacement = 0;
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if (SymFromAddr(process, (DWORD64)stack_frame.AddrPC.Offset, &displacement, symbol))
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{
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IMAGEHLP_MODULE64 moduleInfo;
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std::memset(&moduleInfo, 0, sizeof(IMAGEHLP_MODULE64));
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moduleInfo.SizeOfStruct = sizeof(moduleInfo);
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if (::SymGetModuleInfo64(process, symbol->ModBase, &moduleInfo)) {
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backtrace << moduleInfo.ModuleName << ":";
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}
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backtrace << "0x" << std::hex << (DWORD64)stack_frame.AddrPC.Offset << ": ";
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backtrace << symbol->Name << " + 0x" << std::hex << static_cast<int64_t>(displacement);
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}
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else {
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DWORD error = GetLastError();
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backtrace << std::hex << (DWORD64)stack_frame.AddrPC.Offset << ": [can't get symbol. SymFromAddr failed with error code " << std::dec << error << "]";
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}
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DWORD dwDisplacement;
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IMAGEHLP_LINE64 line;
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SymSetOptions(SYMOPT_LOAD_LINES);
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line.SizeOfStruct = sizeof(IMAGEHLP_LINE64);
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if (::SymGetLineFromAddr64(process, (DWORD64)stack_frame.AddrPC.Offset, &dwDisplacement, &line)) {
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backtrace << " at " << line.FileName << ":" << std::dec << line.LineNumber;
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}
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else {
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DWORD error = GetLastError();
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backtrace << " at [file/line unavailable, SymGetLineFromAddr64 failed with error code " << std::dec << error << "]";
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}
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backtrace << "\n";
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}
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}
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return backtrace.str();
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}
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LONG WINAPI TopLevelExceptionHandler(PEXCEPTION_POINTERS pExceptionInfo)
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{
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std::string backtrace = backtrace_to_string(pExceptionInfo->ContextRecord);
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LOG(ERROR, "Top level exception. Backtrace:\n{}", backtrace);
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return EXCEPTION_CONTINUE_SEARCH;
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}
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}
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std::string backtrace() {
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CONTEXT context;
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memset(&context, 0, sizeof(CONTEXT));
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context.ContextFlags = CONTEXT_FULL;
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RtlCaptureContext(&context);
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return backtrace_to_string(&context);
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}
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void showBacktraceOnSigSegv() {
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SetUnhandledExceptionFilter(TopLevelExceptionHandler);
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}
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}
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#endif
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