QSegfaultHandler Class Reference

#include <qcrashhandler_p.h>

Static Public Functions
static QtCrashHandler	crashHandler ()
static void	initialize (char **, int)
static void	installCrashHandler (QtCrashHandler h)

Static Private Attributes
static QtCrashHandler	callback = 0

Friends
void	qt_signal_handler (int)

Detailed Description

Definition at line 64 of file qcrashhandler_p.h.

Functions

crashHandler()

static QtCrashHandler QSegfaultHandler::crashHandler ( )

inlinestatic

Definition at line 72 of file qcrashhandler_p.h.

{ return callback; }

initialize()

void QSegfaultHandler::initialize ( char **  argv, int  argc  )

static

Definition at line 409 of file qcrashhandler.cpp.

{
    init_backtrace(argv, argc);

    struct sigaction SignalAction;
    SignalAction.sa_flags = 0;
    SignalAction.sa_handler = qt_signal_handler;
    sigemptyset(&SignalAction.sa_mask);
    sigaction(SIGSEGV, &SignalAction, NULL);
    sigaction(SIGBUS, &SignalAction, NULL);
}

installCrashHandler()

static void QSegfaultHandler::installCrashHandler ( QtCrashHandler  h )

inlinestatic

Definition at line 71 of file qcrashhandler_p.h.

{ callback = h; }

Friends and Related Functions

qt_signal_handler

void qt_signal_handler ( int  sig )

friend

Definition at line 385 of file qcrashhandler.cpp.

Referenced by initialize().

{
    signal(sig, SIG_DFL);
    if(QSegfaultHandler::callback) {
        (*QSegfaultHandler::callback)();
        _exit(1);
    }
    FILE *outb = stderr;
    if(char *crash_loc = ::getenv("QT_CRASH_OUTPUT")) {
        if(FILE *new_outb = fopen(crash_loc, "w")) {
            fprintf(stderr, "Crash (backtrace written to %s)!!!\n", crash_loc);
            outb = new_outb;
        }
    } else {
        fprintf(outb, "Crash!!!\n");
    }
    print_backtrace(outb);
    if(outb != stderr)
        fclose(outb);
    _exit(1);
}

Properties

callback

QtCrashHandler QSegfaultHandler::callback = 0

staticprivate

Definition at line 67 of file qcrashhandler_p.h.

Referenced by qt_signal_handler().

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The documentation for this class was generated from the following files:

• /src/corelib/kernel/qcrashhandler_p.h
• /src/corelib/kernel/qcrashhandler.cpp