void fault_handler(int sn, struct siginfo *si, void *ctx)
{
void *p = si->si_addr;
/* quick access to SIGSEGV info in GDB */
int c = si->si_code;
#ifdef MZ_USE_PLACES
int m = 0;
#endif
if (si->si_code != SEGV_ACCERR) { /*SEGV_MAPERR*/
if (c == SEGV_MAPERR) {
printf("SIGSEGV MAPERR si_code %i fault on addr %p\n", c, p);
}
if (c == 0 ) {
/* I have now idea why this happens on linux */
/* supposedly its coming from the user via kill */
/* so just ignore it. */
printf("SIGSEGV SI_USER SI_CODE %i fault on addr %p\n", c, p);
printf("pid %i uid %i thread %lx\n", si->si_pid, si->si_uid, mz_proc_thread_self());
return;
}
if (c == 128 ) {
printf("SIGSEGV SI_KERNEL SI_CODE %i fault on addr %p sent by kernel\n", c, p);
}
#if WAIT_FOR_GDB
launchgdb();
#endif
abort();
}
if (!designate_modified(p)) {
if (si->si_code == SEGV_ACCERR) {
#ifdef MZ_USE_PLACES
if(pagemap_find_page(MASTERGC->page_maps, p)) {
m = 1;
printf("ADDR %p OWNED BY MASTER %i\n", p, m);
}
#endif
printf("SIGSEGV SEGV_ACCERR SI_CODE %i fault on %p\n", c, p);
}
else {
printf("SIGSEGV ???? SI_CODE %i fault on %p\n", c, p);
}
abort();
}
# define NEED_SIGSTACK
# define NEED_SIGACTION
# define USE_SIGACTON_SIGNAL_KIND SIGSEGV
}
void fault_handler(int sn, siginfo_t *si, void *ctx)
{
void *p = si->si_addr;
/* quick access to SIGSEGV info in GDB */
int c = si->si_code;
#ifdef MZ_USE_PLACES
int m = 0;
#endif
if (si->si_code != SEGV_ACCERR) { /*SEGV_MAPERR*/
if (c == SEGV_MAPERR) {
printf("SIGSEGV MAPERR si_code %i fault on addr %p\n", c, p);
/* SIGSEGV MAPERRs are invalid addresses. Possible reasons:
An object is prematurely freed because it isn't getting marked correctly
An unsafe operation was used incorrectly
The stack grew beyond its bounds.
*/
}
if (c == 0) {
/* I have no idea why this happens on linux */
/* supposedly its coming from the user via kill */
/* so just ignore it. It appears when */
/* running w/ places in GDB */
printf("SIGSEGV SI_USER SI_ERRNO %i fault on addr %p\n", si->si_errno, p);
#ifdef MZ_USE_PLACES
printf("pid %i uid %i thread %lx\n", si->si_pid, si->si_uid, mz_proc_thread_self());
#else
printf("pid %i uid %i\n", si->si_pid, si->si_uid);
#endif
return;
}
if (c == 128) {
printf("SIGSEGV SI_KERNEL SI_ERRNO %i fault on addr %p\n", si->si_errno, p);
}
#if WAIT_FOR_GDB
launchgdb();
#endif
abort();
}
if (!designate_modified(p)) {
if (si->si_code == SEGV_ACCERR) {
#ifdef MZ_USE_PLACES
if(pagemap_find_page(MASTERGC->page_maps, p)) {
m = 1;
printf("ADDR %p OWNED BY MASTER %i\n", p, m);
}
#endif
printf("SIGSEGV SEGV_ACCERR SI_CODE %i fault on %p\n", c, p);
}
else {
printf("SIGSEGV ???? SI_CODE %i fault on %p\n", c, p);
}
#if WAIT_FOR_GDB
launchgdb();
#endif
abort();
}
# define NEED_SIGSTACK
# define NEED_SIGACTION
# define USE_SIGACTON_SIGNAL_KIND SIGSEGV
}
