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Introduced alternative signal handling actions

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This commit is contained in:
Thomas Schmitt
2010-03-05 09:08:16 +00:00
parent b4e5afd317
commit 3519b42c14
12 changed files with 395 additions and 51 deletions
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44
libburn/async.c
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@ -40,6 +40,7 @@
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <signal.h>
/*
#include <a ssert.h>
@ -534,8 +535,22 @@ no_non_default_bd_re:;
static void *write_disc_worker_func(struct w_list *w)
{
struct burn_drive *d = w->u.write.drive;
char msg[80];
#define Libburn_protect_write_threaD 1
#ifdef Libburn_protect_write_threaD
sigset_t sigset, oldset;
/* Protect write thread from being interrupted by external signals */
sigfillset(&sigset);
sigdelset(&sigset, SIGSEGV);
sigdelset(&sigset, SIGILL);
pthread_sigmask(SIG_SETMASK, &sigset, &oldset);
#endif /* Libburn_protect_write_threaD */
d->thread_pid = getpid();
d->thread_tid = pthread_self();
d->thread_pid_valid= 1;
burn_disc_write_sync(w->u.write.opts, w->u.write.disc);
d->thread_pid_valid= 0;
@ -545,7 +560,18 @@ static void *write_disc_worker_func(struct w_list *w)
*/
burn_write_opts_free(w->u.write.opts);
sprintf(msg, "Write thread on drive %d ended", d->global_index);
libdax_msgs_submit(libdax_messenger, d->global_index, 0x00020178,
LIBDAX_MSGS_SEV_DEBUG, LIBDAX_MSGS_PRIO_HIGH,
msg, 0, 0);
#ifdef Libburn_protect_write_threaD
/* (just in case it would not end with all signals blocked) */
pthread_sigmask(SIG_SETMASK, &oldset, NULL);
#endif /* Libburn_protect_write_threaD */
remove_worker(pthread_self());
d->busy = BURN_DRIVE_IDLE;
return NULL;
}
@ -653,6 +679,18 @@ int burn_fifo_start(struct burn_source *source, int flag)
struct fifo_opts o;
struct burn_source_fifo *fs = source->data;
#define Libburn_protect_fifo_threaD 1
#ifdef Libburn_protect_fifo_threaD
sigset_t sigset, oldset;
/* Protect write thread from being interrupted by external signals */
sigfillset(&sigset);
sigdelset(&sigset, SIGSEGV);
sigdelset(&sigset, SIGILL);
pthread_sigmask(SIG_SETMASK, &sigset, &oldset);
#endif /* Libburn_protect_fifo_threaD */
fs->is_started = -1;
/* create and set up ring buffer */;
@ -668,6 +706,12 @@ int burn_fifo_start(struct burn_source *source, int flag)
add_worker(Burnworker_type_fifO, NULL,
(WorkerFunc) fifo_worker_func, &o);
fs->is_started = 1;
#ifdef Libburn_protect_fifo_threaD
/* (just in case it would not end with all signals blocked) */
pthread_sigmask(SIG_SETMASK, &oldset, NULL);
#endif /* Libburn_protect_fifo_threaD */
return 1;
}