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Adapted libburner to new advise about signal handling

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This commit is contained in:
Thomas Schmitt 2010-03-06 13:52:21 +00:00
parent 8648c6d80f
commit 22095d9789
1 changed files with 31 additions and 7 deletions
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38
libburn/trunk/test/libburner.c
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@ -26,7 +26,7 @@
approaches are shown here in application functions:
libburner_aquire_by_adr() demonstrates usage as of cdrecord traditions
libburner_aquire_by_driveno() demonstrates a scan-and-choose approach
With that aquired drive you can blank a CD-RW
With that aquired drive you can blank a CD-RW or DVD-RW
libburner_blank_disc()
or you can format a DVD-RW to profile "Restricted Overwrite" (needed once)
or an unused BD to default size with spare blocks
@ -36,9 +36,15 @@
When everything is done, main() releases the drive and shuts down libburn:
burn_drive_release();
burn_finish()
FreeBSD does not work well with the convenient synchronous signal handler. So
the waiting loops for blanking, formatting, and writing use the asynchronous
mode of the libburn signal handler. It will not shutdown the library and
abort the program, but rather tell the ongoing drive operation to stop as
soon as possible. After the loops and at the end of the program there is a
call to determine whether an abort happened:
burn_is_aborting()
*/
/*
Applications must use 64 bit off_t. E.g. by defining
#define _LARGEFILE_SOURCE
#define _FILE_OFFSET_BITS 64
@ -310,9 +316,12 @@ int libburner_blank_disc(struct burn_drive *drive, int blank_fast)
"FATAL : Media is not of erasable type\n");
return 0;
}
printf(
"Beginning to %s-blank media.\n", (blank_fast?"fast":"full"));
/* Switch to asynchronous signal handling for the time of waiting */
burn_set_signal_handling("libburner : ", NULL, 48);
printf("Beginning to %s-blank media.\n", (blank_fast?"fast":"full"));
burn_disc_erase(drive, blank_fast);
sleep(1);
while (burn_drive_get_status(drive, &p) != BURN_DRIVE_IDLE) {
if(p.sectors>0 && p.sector>=0) /* display 1 to 99 percent */
@ -321,6 +330,10 @@ int libburner_blank_disc(struct burn_drive *drive, int blank_fast)
printf("Blanking ( %.1f%% done )\n", percent);
sleep(1);
}
if (burn_is_aborting(0) > 0)
return -1;
/* Back to synchronous handling */
burn_set_signal_handling("libburner : ", NULL, 0);
printf("Done\n");
return 1;
}
@ -373,6 +386,7 @@ int libburner_format(struct burn_drive *drive)
fprintf(stderr, "FATAL: Can only format DVD-RW or BD\n");
return 0;
}
burn_set_signal_handling("libburner : ", NULL, 48);
printf("Beginning to format media.\n");
burn_disc_format(drive, size, format_flag);
@ -385,6 +399,9 @@ int libburner_format(struct burn_drive *drive)
printf("Formatting ( %.1f%% done )\n", percent);
sleep(1);
}
if (burn_is_aborting(0) > 0)
return -1;
burn_set_signal_handling("libburner : ", NULL, 0);
burn_disc_get_profile(drive_list[0].drive, &current_profile,
current_profile_name);
if (current_profile == 0x14 || current_profile == 0x13)
@ -530,6 +547,7 @@ int libburner_payload(struct burn_drive *drive,
fprintf(stderr, "Reasons given:\n%s\n", reasons);
return 0;
}
burn_set_signal_handling("libburner : ", NULL, 48);
printf("Burning starts. With e.g. 4x media expect up to a minute of zero progress.\n");
start_time = time(0);
@ -577,6 +595,8 @@ int libburner_payload(struct burn_drive *drive,
}
burn_session_free(session);
burn_disc_free(target_disc);
if (burn_is_aborting(0) > 0)
return -1;
if (multi && current_profile != 0x1a && current_profile != 0x13 &&
current_profile != 0x12 && current_profile != 0x43)
/* not with DVD+RW, formatted DVD-RW, DVD-RAM, BD-RE */
@ -728,7 +748,7 @@ int main(int argc, char **argv)
/* Print messages of severity SORRY or more directly to stderr */
burn_msgs_set_severities("NEVER", "SORRY", "libburner : ");
/* Activate the default signal handler which eventually will try to
/* Activate the synchronous signal handler which eventually will try to
properly shutdown drive and library on aborting events. */
burn_set_signal_handling("libburner : ", NULL, 0);
@ -762,10 +782,14 @@ release_drive:;
burn_drive_release(drive_list[driveno].drive, 0);
finish_libburn:;
if (burn_is_aborting(0) > 0) {
burn_abort(4400, burn_abort_pacifier, "libburner : ");
fprintf(stderr,"\nlibburner run aborted\n");
exit(1);
}
/* This app does not bother to know about exact scan state.
Better to accept a memory leak here. We are done anyway. */
/* burn_drive_info_free(drive_list); */
burn_finish();
exit(ret);
}