--- a/src/CrashCatcher.cc Wed Mar 12 16:21:49 2014 +0200
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,139 +0,0 @@
-/*
- * LDForge: LDraw parts authoring CAD
- * Copyright (C) 2013, 2014 Santeri Piippo
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program 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 General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#ifdef __unix__
-
-#include <QString>
-#include <QProcess>
-#include <QTemporaryFile>
-#include <QMessageBox>
-#include <unistd.h>
-#include <signal.h>
-
-#ifdef Q_OS_LINUX
-# include <sys/prctl.h>
-#endif
-
-#include "CrashCatcher.h"
-#include "Types.h"
-#include "Dialogs.h"
-
-// Is the crash catcher active now?
-static bool g_crashCatcherActive = false;
-
-// If an assertion failed, what was it?
-static QString g_assertionFailure;
-
-// List of signals to catch and crash on
-static QList<int> g_signalsToCatch ({
- SIGSEGV, // segmentation fault
- SIGABRT, // abort() calls
- SIGFPE, // floating point exceptions (e.g. division by zero)
- SIGILL, // illegal instructions
-});
-
-// =============================================================================
-//
-static void handleCrash (int sig)
-{
- printf ("%s: crashed with signal %d, launching gdb\n", __func__, sig);
-
- if (g_crashCatcherActive)
- {
- printf ("caught signal while crash catcher is active!\n");
- exit (149);
- }
-
- const pid_t pid = getpid();
- QProcess proc;
- QTemporaryFile commandsFile;
-
- g_crashCatcherActive = true;
-
- if (commandsFile.open())
- {
- commandsFile.write (format ("attach %1\n", pid).toLocal8Bit());
- commandsFile.write (QString ("backtrace full\n").toLocal8Bit());
- commandsFile.write (QString ("detach\n").toLocal8Bit());
- commandsFile.write (QString ("quit").toLocal8Bit());
- commandsFile.flush();
- commandsFile.close();
- }
-
- QStringList args ({"-x", commandsFile.fileName()});
-
- proc.start ("gdb", args);
-
- // Linux doesn't allow ptrace to be used on anything but direct child processes
- // so we need to use prctl to register an exception to this to allow GDB attach to us.
- // We need to do this now and no earlier because only now we actually know GDB's PID.
-#ifdef Q_OS_LINUX
- prctl (PR_SET_PTRACER, proc.pid(), 0, 0, 0);
-#endif
-
- proc.waitForFinished (1000);
- QString output = QString (proc.readAllStandardOutput());
- QString err = QString (proc.readAllStandardError());
-
- bombBox (format ("<h3>Program crashed with signal %1</h3>\n\n"
- "%2"
- "<p><b>GDB <tt>stdout</tt>:</b></p><pre>%3</pre>\n"
- "<p><b>GDB <tt>stderr</tt>:</b></p><pre>%4</pre>",
- sig, (!g_assertionFailure.isEmpty()) ? g_assertionFailure : "", output, err));
-}
-
-// =============================================================================
-//
-void initCrashCatcher()
-{
- struct sigaction sighandler;
- sighandler.sa_handler = &handleCrash;
- sighandler.sa_flags = 0;
- sigemptyset (&sighandler.sa_mask);
-
- for (int sig : g_signalsToCatch)
- sigaction (sig, &sighandler, null);
-
- print ("%1: crash catcher hooked to signals: %2\n", __func__, g_signalsToCatch);
-}
-#endif // #ifdef __unix__
-
-// =============================================================================
-//
-// This function must be readily available in both Windows and Linux. We display
-// the bomb box straight in Windows while in Linux we let abort() trigger the
-// signal handler, which will cause the usual bomb box with GDB diagnostics.
-// Said prompt will embed the assertion failure information.
-//
-void assertionFailure (const char* file, int line, const char* funcname, const char* expr)
-{
- QString errmsg = format (
- "<p><b>File</b>: <tt>%1</tt><br />"
- "<b>Line</b>: <tt>%2</tt><br />"
- "<b>Function:</b> <tt>%3</tt></p>"
- "<p>Assertion <b><tt>`%4'</tt></b> failed.</p>",
- file, line, funcname, expr);
-
- g_assertionFailure = errmsg;
-
-#ifndef __unix__
- bombBox (errmsg);
-#endif
-
- abort();
-}
\ No newline at end of file