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Made first use of queued messages and fixed several bugs with that

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This commit is contained in:
Thomas Schmitt
2006-09-26 11:44:07 +00:00
parent bbcf7c269c
commit facd49dc4e
5 changed files with 125 additions and 29 deletions
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41
libburn/libdax_msgs.c
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@ -58,20 +58,38 @@ static int libdax_msgs_item_new(struct libdax_msgs_item **item,
}
int libdax_msgs_item_destroy(struct libdax_msgs_item **item,
int flag)
/** Detaches item from its queue and eventually readjusts start, end pointers
of the queue */
int libdax_msgs_item_unlink(struct libdax_msgs_item *o,
struct libdax_msgs_item **chain_start,
struct libdax_msgs_item **chain_end, int flag)
{
struct libdax_msgs_item *o;
o= *item;
if(o==NULL)
return(0);
if(o->msg_text!=NULL)
free((char *) o->msg_text);
if(o->prev!=NULL)
o->prev->next= o->next;
if(o->next!=NULL)
o->next->prev= o->prev;
if(chain_start!=NULL)
if(*chain_start == o)
*chain_start= o->next;
if(chain_end!=NULL)
if(*chain_end == o)
*chain_end= o->prev;
o->next= o->prev= NULL;
return(1);
}
int libdax_msgs_item_destroy(struct libdax_msgs_item **item,
int flag)
{
struct libdax_msgs_item *o;
o= *item;
if(o==NULL)
return(0);
libdax_msgs_item_unlink(o,NULL,NULL,0);
if(o->msg_text!=NULL)
free((char *) o->msg_text);
free((char *) o);
*item= NULL;
return(1);
@ -314,6 +332,8 @@ int libdax_msgs_submit(struct libdax_msgs *m, int driveno, int error_code,
strcpy(item->msg_text,msg_text);
}
item->os_errno= os_errno;
if(m->oldest==NULL)
m->oldest= item;
m->youngest= item;
m->count++;
libdax_msgs_unlock(m,0);
@ -337,6 +357,7 @@ int libdax_msgs_obtain(struct libdax_msgs *m, struct libdax_msgs_item **item,
int ret;
struct libdax_msgs_item *im, *next_im= NULL;
*item= NULL;
ret= libdax_msgs_lock(m,0);
if(ret<=0)
return(-1);
@ -345,6 +366,7 @@ int libdax_msgs_obtain(struct libdax_msgs *m, struct libdax_msgs_item **item,
next_im= im->next;
if(im->severity>=severity)
break;
libdax_msgs_item_unlink(im,&(m->oldest),&(m->youngest),0);
libdax_msgs_item_destroy(&im,0); /* severity too low: delete */
}
if(im==NULL)
@ -354,6 +376,7 @@ int libdax_msgs_obtain(struct libdax_msgs *m, struct libdax_msgs_item **item,
}
if(im==NULL)
{ret= 0; goto ex;}
libdax_msgs_item_unlink(im,&(m->oldest),&(m->youngest),0);
*item= im;
ret= 1;
ex:;