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Activated re-usal of disposed global drive_array slots

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This commit is contained in:
Thomas Schmitt 2007-10-15 14:41:29 +00:00
parent 9322c1832a
commit 3bb68810d7
2 changed files with 49 additions and 60 deletions
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2
libburn/trunk/cdrskin/cdrskin_timestamp.h
View File

@ -1 +1 @@
#define Cdrskin_timestamP "2007.10.15.115851"
#define Cdrskin_timestamP "2007.10.15.144050"

107
libburn/trunk/libburn/drive.c
View File

@ -312,6 +312,10 @@ int burn_drive_grab(struct burn_drive *d, int le)
return ret;
}
/* ts A71015 */
#define Libburn_ticket_62_re_register_is_possiblE 1
struct burn_drive *burn_drive_register(struct burn_drive *d)
{
#ifdef Libburn_ticket_62_re_register_is_possiblE
@ -338,6 +342,7 @@ struct burn_drive *burn_drive_register(struct burn_drive *d)
#ifdef Libburn_ticket_62_re_register_is_possiblE
/* ts A60904 : ticket 62, contribution by elmom */
/* Not yet accepted because no use case seen yet */
/* ts A71015 : xorriso dialog imposes a use case now */
/* This is supposed to find an already freed drive struct among
all the the ones that have been used before */
@ -859,77 +864,67 @@ int burn_drive_scan_sync(struct burn_drive_info *drives[],
drive by drive (within scsi_enumerate_drives()).
I will use "scanned" for marking drives found by previous runs.
Leaving it static for now, but initializing it on each call by
iterating over the list of known drives.
It will not be static any more.
*/
/* state vars for the scan process */
/* ts A60904 : did set some default values to feel comfortable */
static int scanning = 0;
/* ts A71015 : this makes only trouble : static int scanning = 0; */
/* ts A70907 :
These variables are too small anyway. We got up to 255 drives.
static int scanned = 0, found = 0;
Variable "found" was only set but never read.
*/
static unsigned char scanned[32];
static unsigned num_scanned = 0, count = 0;
unsigned char scanned[32];
unsigned count = 0;
int i;
/* ts A61007 : moved up to burn_drive_scan() */
/* a ssert(burn_running); */
if (!scanning) {
scanning = 1;
/* ts A61007 : test moved up to burn_drive_scan()
/* ts A61007 : test moved up to burn_drive_scan()
burn_wait_all() is obsoleted */
#if 0
/* make sure the drives aren't in use */
burn_wait_all(); /* make sure the queue cleans up
before checking for the released
state */
/* make sure the drives aren't in use */
burn_wait_all(); /* make sure the queue cleans up
before checking for the released
state */
#endif /* 0 */
*n_drives = num_scanned = 0;
*n_drives = 0;
/* ts A70907 : wether to scan from scratch or to extend */
if (flag & 1) {
burn_drive_free_all();
for (i = 0; i < sizeof(scanned); i++)
scanned[i] = 0;
} else {
for (i = 0; i <= drivetop; i++)
if (drive_array[i].global_index >= 0)
scanned[i / 8] |= (1 << (i % 8));
if (drivetop + 1 > 0)
num_scanned= drivetop + 1;
}
/* refresh the lib's drives */
/* ts A61115 : formerly sg_enumerate(); ata_enumerate(); */
scsi_enumerate_drives();
count = burn_drive_count();
if (count) {
/* ts A70907 :
Extra array element marks end of array. */
*drives = calloc(count + 1,
sizeof(struct burn_drive_info));
if (*drives == NULL) {
libdax_msgs_submit(libdax_messenger, -1,
0x00000003,
LIBDAX_MSGS_SEV_FATAL,
LIBDAX_MSGS_PRIO_HIGH,
"Out of virtual memory", 0, 0);
scanning = 0;
return -1;
} else
for (i = 0; i <= count; i++) /* invalidate */
(*drives)[i].drive = NULL;
} else
*drives = NULL;
/* ts A70907 : wether to scan from scratch or to extend */
for (i = 0; i < sizeof(scanned); i++)
scanned[i] = 0;
if (flag & 1) {
burn_drive_free_all();
} else {
for (i = 0; i <= drivetop; i++)
if (drive_array[i].global_index >= 0)
scanned[i / 8] |= (1 << (i % 8));
}
/* refresh the lib's drives */
/* ts A61115 : formerly sg_enumerate(); ata_enumerate(); */
scsi_enumerate_drives();
count = burn_drive_count();
if (count) {
/* ts A70907 :
Extra array element marks end of array. */
*drives = calloc(count + 1,
sizeof(struct burn_drive_info));
if (*drives == NULL) {
libdax_msgs_submit(libdax_messenger, -1, 0x00000003,
LIBDAX_MSGS_SEV_FATAL,
LIBDAX_MSGS_PRIO_HIGH,
"Out of virtual memory", 0, 0);
return -1;
} else
for (i = 0; i <= count; i++) /* invalidate */
(*drives)[i].drive = NULL;
} else
*drives = NULL;
for (i = 0; i < count; ++i) {
if (scanned[i / 8] & (1 << (i % 8)))
continue; /* device already scanned by previous run */
@ -942,15 +937,9 @@ int burn_drive_scan_sync(struct burn_drive_info *drives[],
}
(*n_drives)++;
scanned[i / 8] |= 1 << (i % 8);
num_scanned++;
}
if (num_scanned == count) {
/* done scanning */
scanning = 0;
return 1;
}
return 0;
return(1);
}
/* ts A61001 : internal call */