diff options
Diffstat (limited to 'indra/newview/llappviewerlinux.cpp')
| -rw-r--r-- | indra/newview/llappviewerlinux.cpp | 262 |
1 files changed, 245 insertions, 17 deletions
diff --git a/indra/newview/llappviewerlinux.cpp b/indra/newview/llappviewerlinux.cpp index 7629265730..78b0f7ba83 100644 --- a/indra/newview/llappviewerlinux.cpp +++ b/indra/newview/llappviewerlinux.cpp @@ -2,25 +2,31 @@ * @file llappviewerlinux.cpp * @brief The LLAppViewerLinux class definitions * - * $LicenseInfo:firstyear=2007&license=viewerlgpl$ - * Second Life Viewer Source Code - * Copyright (C) 2010, Linden Research, Inc. + * $LicenseInfo:firstyear=2007&license=viewergpl$ + * + * Copyright (c) 2007-2009, Linden Research, Inc. * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; - * version 2.1 of the License only. + * Second Life Viewer Source Code + * The source code in this file ("Source Code") is provided by Linden Lab + * to you under the terms of the GNU General Public License, version 2.0 + * ("GPL"), unless you have obtained a separate licensing agreement + * ("Other License"), formally executed by you and Linden Lab. Terms of + * the GPL can be found in doc/GPL-license.txt in this distribution, or + * online at http://secondlifegrid.net/programs/open_source/licensing/gplv2 * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Lesser General Public License for more details. + * There are special exceptions to the terms and conditions of the GPL as + * it is applied to this Source Code. View the full text of the exception + * in the file doc/FLOSS-exception.txt in this software distribution, or + * online at + * http://secondlifegrid.net/programs/open_source/licensing/flossexception * - * You should have received a copy of the GNU Lesser General Public - * License along with this library; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + * By copying, modifying or distributing this software, you acknowledge + * that you have read and understood your obligations described above, + * and agree to abide by those obligations. * - * Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA + * ALL LINDEN LAB SOURCE CODE IS PROVIDED "AS IS." LINDEN LAB MAKES NO + * WARRANTIES, EXPRESS, IMPLIED OR OTHERWISE, REGARDING ITS ACCURACY, + * COMPLETENESS OR PERFORMANCE. * $/LicenseInfo$ */ @@ -40,6 +46,23 @@ #include <exception> +#if LL_LINUX +# include <dlfcn.h> // RTLD_LAZY +# include <execinfo.h> // backtrace - glibc only +#elif LL_SOLARIS +# include <sys/types.h> +# include <unistd.h> +# include <fcntl.h> +# include <ucontext.h> +#endif + +#ifdef LL_ELFBIN +# ifdef __GNUC__ +# include <cxxabi.h> // for symbol demangling +# endif +# include "ELFIO/ELFIO.h" // for better backtraces +#endif + #if LL_DBUS_ENABLED # include "llappviewerlinux_api_dbus.h" @@ -63,6 +86,7 @@ static void exceptionTerminateHandler() // reinstall default terminate() handler in case we re-terminate. if (gOldTerminateHandler) std::set_terminate(gOldTerminateHandler); // treat this like a regular viewer crash, with nice stacktrace etc. + LLAppViewer::handleSyncViewerCrash(); LLAppViewer::handleViewerCrash(); // we've probably been killed-off before now, but... gOldTerminateHandler(); // call old terminate() handler @@ -85,6 +109,7 @@ int main( int argc, char **argv ) gOldTerminateHandler = std::set_terminate(exceptionTerminateHandler); // install crash handlers viewer_app_ptr->setErrorHandler(LLAppViewer::handleViewerCrash); + viewer_app_ptr->setSyncErrorHandler(LLAppViewer::handleSyncViewerCrash); bool ok = viewer_app_ptr->init(); if(!ok) @@ -113,6 +138,201 @@ int main( int argc, char **argv ) return 0; } +#ifdef LL_SOLARIS +static inline BOOL do_basic_glibc_backtrace() +{ + BOOL success = FALSE; + + std::string strace_filename = gDirUtilp->getExpandedFilename(LL_PATH_LOGS,"stack_trace.log"); + llinfos << "Opening stack trace file " << strace_filename << llendl; + LLFILE* StraceFile = LLFile::fopen(strace_filename, "w"); + if (!StraceFile) + { + llinfos << "Opening stack trace file " << strace_filename << " failed. Using stderr." << llendl; + StraceFile = stderr; + } + + printstack(fileno(StraceFile)); + + if (StraceFile != stderr) + fclose(StraceFile); + + return success; +} +#else +#define MAX_STACK_TRACE_DEPTH 40 +// This uses glibc's basic built-in stack-trace functions for a not very +// amazing backtrace. +static inline BOOL do_basic_glibc_backtrace() +{ + void *stackarray[MAX_STACK_TRACE_DEPTH]; + size_t size; + char **strings; + size_t i; + BOOL success = FALSE; + + size = backtrace(stackarray, MAX_STACK_TRACE_DEPTH); + strings = backtrace_symbols(stackarray, size); + + std::string strace_filename = gDirUtilp->getExpandedFilename(LL_PATH_LOGS,"stack_trace.log"); + llinfos << "Opening stack trace file " << strace_filename << llendl; + LLFILE* StraceFile = LLFile::fopen(strace_filename, "w"); // Flawfinder: ignore + if (!StraceFile) + { + llinfos << "Opening stack trace file " << strace_filename << " failed. Using stderr." << llendl; + StraceFile = stderr; + } + + if (size) + { + for (i = 0; i < size; i++) + { + // the format of the StraceFile is very specific, to allow (kludgy) machine-parsing + fprintf(StraceFile, "%-3lu ", (unsigned long)i); + fprintf(StraceFile, "%-32s\t", "unknown"); + fprintf(StraceFile, "%p ", stackarray[i]); + fprintf(StraceFile, "%s\n", strings[i]); + } + + success = TRUE; + } + + if (StraceFile != stderr) + fclose(StraceFile); + + free (strings); + return success; +} + +#if LL_ELFBIN +// This uses glibc's basic built-in stack-trace functions together with +// ELFIO's ability to parse the .symtab ELF section for better symbol +// extraction without exporting symbols (which'd cause subtle, fatal bugs). +static inline BOOL do_elfio_glibc_backtrace() +{ + void *stackarray[MAX_STACK_TRACE_DEPTH]; + size_t btsize; + char **strings; + BOOL success = FALSE; + + std::string appfilename = gDirUtilp->getExecutablePathAndName(); + + std::string strace_filename = gDirUtilp->getExpandedFilename(LL_PATH_LOGS,"stack_trace.log"); + llinfos << "Opening stack trace file " << strace_filename << llendl; + LLFILE* StraceFile = LLFile::fopen(strace_filename, "w"); // Flawfinder: ignore + if (!StraceFile) + { + llinfos << "Opening stack trace file " << strace_filename << " failed. Using stderr." << llendl; + StraceFile = stderr; + } + + // get backtrace address list and basic symbol info + btsize = backtrace(stackarray, MAX_STACK_TRACE_DEPTH); + strings = backtrace_symbols(stackarray, btsize); + + // create ELF reader for our app binary + IELFI* pReader; + const IELFISection* pSec = NULL; + IELFISymbolTable* pSymTbl = 0; + if (ERR_ELFIO_NO_ERROR != ELFIO::GetInstance()->CreateELFI(&pReader) || + ERR_ELFIO_NO_ERROR != pReader->Load(appfilename.c_str()) || + // find symbol table, create reader-object + NULL == (pSec = pReader->GetSection( ".symtab" )) || + ERR_ELFIO_NO_ERROR != pReader->CreateSectionReader(IELFI::ELFI_SYMBOL, pSec, (void**)&pSymTbl) ) + { + // Failed to open our binary and read its symbol table somehow + llinfos << "Could not initialize ELF symbol reading - doing basic backtrace." << llendl; + if (StraceFile != stderr) + fclose(StraceFile); + // note that we may be leaking some of the above ELFIO + // objects now, but it's expected that we'll be dead soon + // and we want to tread delicately until we get *some* kind + // of useful backtrace. + return do_basic_glibc_backtrace(); + } + + // iterate over trace and symtab, looking for plausible symbols + std::string name; + Elf32_Addr value; + Elf32_Word ssize; + unsigned char bind; + unsigned char type; + Elf32_Half section; + int nSymNo = pSymTbl->GetSymbolNum(); + size_t btpos; + for (btpos = 0; btpos < btsize; ++btpos) + { + // the format of the StraceFile is very specific, to allow (kludgy) machine-parsing + fprintf(StraceFile, "%-3ld ", (long)btpos); + int symidx; + for (symidx = 0; symidx < nSymNo; ++symidx) + { + if (ERR_ELFIO_NO_ERROR == + pSymTbl->GetSymbol(symidx, name, value, ssize, + bind, type, section)) + { + // check if trace address within symbol range + if (uintptr_t(stackarray[btpos]) >= value && + uintptr_t(stackarray[btpos]) < value+ssize) + { + // symbol is inside viewer + fprintf(StraceFile, "%-32s\t", "com.secondlife.indra.viewer"); + fprintf(StraceFile, "%p ", stackarray[btpos]); + + char *demangled_str = NULL; + int demangle_result = 1; + demangled_str = + abi::__cxa_demangle + (name.c_str(), NULL, NULL, + &demangle_result); + if (0 == demangle_result && + NULL != demangled_str) { + fprintf(StraceFile, + "%s", demangled_str); + free(demangled_str); + } + else // failed demangle; print it raw + { + fprintf(StraceFile, + "%s", name.c_str()); + } + // print offset from symbol start + fprintf(StraceFile, + " + %lu\n", + uintptr_t(stackarray[btpos]) - + value); + goto got_sym; // early escape + } + } + } + // Fallback: + // Didn't find a suitable symbol in the binary - it's probably + // a symbol in a DSO; use glibc's idea of what it should be. + fprintf(StraceFile, "%-32s\t", "unknown"); + fprintf(StraceFile, "%p ", stackarray[btpos]); + fprintf(StraceFile, "%s\n", strings[btpos]); + got_sym:; + } + + if (StraceFile != stderr) + fclose(StraceFile); + + pSymTbl->Release(); + pSec->Release(); + pReader->Release(); + + free(strings); + + llinfos << "Finished generating stack trace." << llendl; + + success = TRUE; + return success; +} +#endif // LL_ELFBIN + +#endif // LL_SOLARIS + + LLAppViewerLinux::LLAppViewerLinux() { } @@ -321,6 +541,16 @@ bool LLAppViewerLinux::sendURLToOtherInstance(const std::string& url) } #endif // LL_DBUS_ENABLED +void LLAppViewerLinux::handleSyncCrashTrace() +{ + // This backtrace writes into stack_trace.log +# if LL_ELFBIN + do_elfio_glibc_backtrace(); // more useful backtrace +# else + do_basic_glibc_backtrace(); // only slightly useful backtrace +# endif // LL_ELFBIN +} + void LLAppViewerLinux::handleCrashReporting(bool reportFreeze) { std::string cmd =gDirUtilp->getExecutableDir(); @@ -456,8 +686,6 @@ bool LLAppViewerLinux::beingDebugged() bool LLAppViewerLinux::initLogging() { // Remove the last stack trace, if any - // This file is no longer created, since the move to Google Breakpad - // The code is left here to clean out any old state in the log dir std::string old_stack_file = gDirUtilp->getExpandedFilename(LL_PATH_LOGS,"stack_trace.log"); LLFile::remove(old_stack_file); |