libburnia/libburn
2
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Introduced alternative signal handling actions

Browse Source
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
Download Patch File Download Diff File Expand all files Collapse all files

135
libburn/drive.c
View File

@ -376,6 +376,7 @@ struct burn_drive *burn_drive_register(struct burn_drive *d)
d->busy = BURN_DRIVE_IDLE;
d->thread_pid = 0;
d->thread_pid_valid = 0;
memset(&(d->thread_tid), 0, sizeof(d->thread_tid));
d->toc_entries = 0;
d->toc_entry = NULL;
d->disc = NULL;
@ -815,10 +816,22 @@ int burn_disc_erasable(struct burn_drive *d)
enum burn_drive_status burn_drive_get_status(struct burn_drive *d,
struct burn_progress *p)
{
/* --- Part of asynchronous signal handling --- */
/* This frequently used call may be used to react on messages from
the libburn built-in signal handler.
*/
/* ts B00225 :
If aborting with action 2:
catch control thread after it returned from signal handler.
Let it run burn_abort(4440,...)
*/
burn_init_catch_on_abort(0);
/* ts A70928 : inform control thread of signal in sub-threads */
if (burn_global_abort_level > 0)
if (burn_builtin_triggered_action < 2 && burn_global_abort_level > 0)
burn_global_abort_level++;
if (burn_global_abort_level > 5) {
if (burn_builtin_triggered_action < 2 && burn_global_abort_level > 5) {
if (burn_global_signal_handler == NULL)
kill(getpid(), burn_global_abort_signum);
else
@ -828,6 +841,9 @@ enum burn_drive_status burn_drive_get_status(struct burn_drive *d,
burn_global_abort_level = -1;
}
/* --- End of asynchronous signal handling --- */
if (p != NULL) {
memcpy(p, &(d->progress), sizeof(struct burn_progress));
/* TODO: add mutex */
@ -849,9 +865,13 @@ int burn_drive_set_stream_recording(struct burn_drive *d, int recmode,
void burn_drive_cancel(struct burn_drive *d)
{
/* ts B00225 : these mutexes are unnecessary because "= 1" is atomar.
pthread_mutex_lock(&d->access_lock);
*/
d->cancel = 1;
/*
pthread_mutex_unlock(&d->access_lock);
*/
}
/* ts A61007 : defunct because unused */
@ -1868,17 +1888,12 @@ int burn_abort_pacifier(void *handle, int patience, int elapsed)
}
/** Abort any running drive operation and finish libburn.
@param patience Maximum number of seconds to wait for drives to finish
@param pacifier_func Function to produce appeasing messages. See
burn_abort_pacifier() for an example.
@return 1 ok, all went well
0 had to leave a drive in unclean state
<0 severe error, do no use libburn again
/* ts B00226 : Outsourced backend of burn_abort()
@param flag bit0= do not call burn_finish()
*/
int burn_abort(int patience,
int burn_abort_5(int patience,
int (*pacifier_func)(void *handle, int patience, int elapsed),
void *handle)
void *handle, int elapsed, int flag)
{
int ret, i, occup, still_not_done= 1, pacifier_off= 0, first_round= 1;
unsigned long wait_grain= 100000;
@ -1888,7 +1903,11 @@ int burn_abort(int patience,
time_t stdio_patience = 3;
#endif
fprintf(stderr, "libburn_EXPERIMENTAL: burn_abort_5(%d,%d)\n", patience, flag);
current_time = start_time = pacifier_time = time(0);
start_time -= elapsed;
end_time = start_time + patience;
/* >>> ts A71002 : are there any threads at work ?
@ -1935,6 +1954,9 @@ int burn_abort(int patience,
}
if(occup <= 10) {
if (drive_array[i].drive_role != 1)
/* occup == -1 comes early */
usleep(1000000);
burn_drive_forget(&(drive_array[i]), 1);
} else if(occup <= 100) {
if(first_round)
@ -1959,12 +1981,95 @@ int burn_abort(int patience,
pacifier_time = current_time;
}
}
if (patience > 0)
if (!(flag & 1))
burn_finish();
return(still_not_done == 0);
}
#ifdef NIX
/* <<< did not help. Is on its way out */
/* ts B00226 */
/* Wait for the most delicate drive states to end
*/
int burn_abort_write(int patience,
int (*pacifier_func)(void *handle, int patience, int elapsed),
void *handle)
{
int ret, i, still_not_done= 1, pacifier_off= 0;
unsigned long wait_grain= 100000;
time_t start_time, current_time, pacifier_time, end_time;
struct burn_drive *d;
fprintf(stderr, "libburn_EXPERIMENTAL: burn_abort_write\n");
current_time = start_time = pacifier_time = time(0);
end_time = start_time + patience;
while(current_time < end_time || patience <= 0) {
still_not_done = 0;
for(i = 0; i < drivetop + 1; i++) {
d = &(drive_array[i]);
if(d->global_index < 0)
continue;
if(d->busy != BURN_DRIVE_WRITING &&
d->busy != BURN_DRIVE_WRITING_LEADIN &&
d->busy != BURN_DRIVE_WRITING_LEADOUT &&
d->busy != BURN_DRIVE_WRITING_PREGAP &&
d->busy != BURN_DRIVE_CLOSING_TRACK &&
d->busy != BURN_DRIVE_CLOSING_SESSION)
continue;
still_not_done = 1;
}
if(still_not_done == 0 || patience <= 0)
break;
usleep(wait_grain);
current_time = time(0);
if(current_time>pacifier_time) {
if(pacifier_func != NULL && !pacifier_off) {
ret = (*pacifier_func)(handle, patience,
current_time - start_time);
pacifier_off = (ret <= 0);
}
pacifier_time = current_time;
}
}
if (current_time - start_time > patience - 3)
patience = current_time - start_time + 3;
ret = burn_abort_5(patience, pacifier_func, handle,
current_time - start_time, 0);
return ret;
}
#endif /* NIX */
/** Abort any running drive operation and finish libburn.
@param patience Maximum number of seconds to wait for drives to finish
@param pacifier_func Function to produce appeasing messages. See
burn_abort_pacifier() for an example.
@return 1 ok, all went well
0 had to leave a drive in unclean state
<0 severe error, do no use libburn again
*/
int burn_abort(int patience,
int (*pacifier_func)(void *handle, int patience, int elapsed),
void *handle)
{
int ret, flg = 0;
if (patience < 0) {
patience = 0;
flg |= 1;
}
ret = burn_abort_5(patience, pacifier_func, handle, 0, flg);
return ret;
}
/* ts A61020 API function */
int burn_drive_get_start_end_lba(struct burn_drive *d,
int *start_lba, int *end_lba, int flag)
@ -2698,7 +2803,8 @@ int burn_drive_equals_adr(struct burn_drive *d1, char *adr2_in, int role2)
}
int burn_drive_find_by_thread_pid(struct burn_drive **d, pid_t pid)
int burn_drive_find_by_thread_pid(struct burn_drive **d, pid_t pid,
pthread_t tid)
{
int i;
@ -2710,7 +2816,8 @@ int burn_drive_find_by_thread_pid(struct burn_drive **d, pid_t pid)
*/
if (drive_array[i].thread_pid_valid &&
drive_array[i].thread_pid == pid) {
drive_array[i].thread_pid == pid &&
pthread_equal(drive_array[i].thread_tid, tid)) {
*d = &(drive_array[i]);
return 1;
}