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Cancelling libburn fifo thread before freeing the fifo object

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This commit is contained in:
Thomas Schmitt 2008-11-08 14:18:14 +00:00
parent 6053f3a6e3
commit 6fe53827da
4 changed files with 39 additions and 5 deletions
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2
cdrskin/cdrskin_timestamp.h
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@ -1 +1 @@
#define Cdrskin_timestamP "2008.11.08.134828"
#define Cdrskin_timestamP "2008.11.08.141734"

26
libburn/async.c
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@ -25,9 +25,9 @@
#include "drive.h"
#include "write.h"
#include "options.h"
#include "file.h"
#include "async.h"
#include "init.h"
#include "file.h"
#include "back_hacks.h"
#include <pthread.h>
@ -518,6 +518,12 @@ void burn_disc_write(struct burn_write_opts *opts, struct burn_disc *disc)
static void *fifo_worker_func(struct w_list *w)
{
int old;
pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, &old);
pthread_setcanceltype(PTHREAD_CANCEL_ASYNCHRONOUS, &old);
/* Note: Only burn_fifo_abort() shall cancel the fifo thread */
burn_fifo_source_shoveller(w->u.fifo.source, w->u.fifo.flag);
remove_worker(pthread_self());
return NULL;
@ -547,6 +553,24 @@ int burn_fifo_start(struct burn_source *source, int flag)
}
int burn_fifo_abort(struct burn_source_fifo *fs, int flag)
{
int ret;
pthread_t pt;
if (fs->thread_is_valid <= 0 || fs->thread_handle == NULL)
return(2);
libdax_msgs_submit(libdax_messenger, -1, 0x00000002,
LIBDAX_MSGS_SEV_DEBUG, LIBDAX_MSGS_PRIO_HIGH,
"Aborting running burn_source_fifo thread", 0, 0);
pt= *((pthread_t *) fs->thread_handle);
remove_worker(pt);
ret = pthread_cancel(pt);
return (ret == 0);
}
#ifdef Libburn_has_burn_async_join_alL
/* ts A71019 : never used */

13
libburn/file.c
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@ -9,6 +9,8 @@
#include <unistd.h>
#include <fcntl.h>
#include <time.h>
#include <pthread.h>
#include "source.h"
#include "libburn.h"
#include "file.h"
@ -307,6 +309,7 @@ static void fifo_free(struct burn_source *source)
{
struct burn_source_fifo *fs = source->data;
burn_fifo_abort(fs, 0);
if (fs->inp != NULL)
burn_source_free(fs->inp);
if (fs->buf != NULL)
@ -320,9 +323,12 @@ int burn_fifo_source_shoveller(struct burn_source *source, int flag)
struct burn_source_fifo *fs = source->data;
int ret, bufsize, diff, wpos, rpos, trans_end, free_bytes;
char *bufpt;
pthread_t thread_handle_storage;
fs->thread_handle= &thread_handle_storage;
*((pthread_t *) fs->thread_handle)= pthread_self();
fs->thread_pid = getpid();
fs->thread_pid_valid = 1;
fs->thread_is_valid = 1;
bufsize = fs->chunksize * fs->chunks;
while (!fs->end_of_consumption) {
@ -430,6 +436,8 @@ int burn_fifo_source_shoveller(struct burn_source *source, int flag)
free(fs->buf); /* Give up fifo buffer. Next fifo might start soon. */
fs->buf = NULL;
fs->thread_handle= NULL;
fs->thread_is_valid = 0;
return (fs->input_error == 0);
}
@ -465,8 +473,9 @@ struct burn_source *burn_fifo_source_new(struct burn_source *inp,
if (fs == NULL)
return NULL;
fs->is_started = 0;
fs->thread_handle = NULL;
fs->thread_pid = 0;
fs->thread_pid_valid = 0;
fs->thread_is_valid = 0;
fs->inp = NULL; /* set later */
fs->chunksize = chunksize;
fs->chunks = chunks;

3
libburn/file.h
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@ -29,8 +29,9 @@ struct burn_source_fifo {
*/
int is_started;
void *thread_handle; /* actually a pointer to a thread_t */
int thread_pid;
int thread_pid_valid;
int thread_is_valid;
/* the burn_source for which this fifo is acting as proxy */
struct burn_source *inp;