--- a/src/crashcatcher.cpp Fri Dec 13 00:39:49 2013 +0200
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,109 +0,0 @@
-#ifdef __unix__
-
-#include <QString>
-#include <QProcess>
-#include <QTemporaryFile>
-#include <QMessageBox>
-#include <unistd.h>
-#include <signal.h>
-#include <sys/prctl.h>
-#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 str 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 (fmt ("attach %1\n", pid).toLocal8Bit());
- commandsFile.write (str ("backtrace full\n").toLocal8Bit());
- commandsFile.write (str ("detach\n").toLocal8Bit());
- commandsFile.write (str ("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.
- prctl (PR_SET_PTRACER, proc.pid(), 0, 0, 0);
-
- proc.waitForFinished (1000);
- str output = QString (proc.readAllStandardOutput());
- str err = QString (proc.readAllStandardError());
-
- bombBox (fmt ("<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);
-
- log ("%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)
-{ str errmsg = fmt (
- "<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