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/*
* Management of the debugging channels
*
* Copyright 2000 Alexandre Julliard
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <ctype.h>
struct dll
{
struct dll *next; /* linked list of dlls */
struct dll *prev;
char * const *channels; /* array of channels */
int nb_channels; /* number of channels in array */
};
static struct dll *first_dll;
struct debug_option
{
struct debug_option *next; /* next option in list */
unsigned char set; /* bits to set */
unsigned char clear; /* bits to clear */
char name[14]; /* channel name, or empty for "all" */
};
static struct debug_option *first_option;
static struct debug_option *last_option;
static int cmp_name( const void *p1, const void *p2 )
{
const char *name = p1;
const char * const *chan = p2;
return strcmp( name, *chan + 1 );
}
/* apply a debug option to the channels of a given dll */
static void apply_option( struct dll *dll, const struct debug_option *opt )
{
if (opt->name[0])
{
char **dbch = bsearch( opt->name, dll->channels, dll->nb_channels,
sizeof(*dll->channels), cmp_name );
if (dbch) **dbch = (**dbch & ~opt->clear) | opt->set;
}
else /* all */
{
int i;
for (i = 0; i < dll->nb_channels; i++)
dll->channels[i][0] = (dll->channels[i][0] & ~opt->clear) | opt->set;
}
}
/* register a new set of channels for a dll */
void *__wine_dbg_register( char * const *channels, int nb )
{
struct debug_option *opt = first_option;
struct dll *dll = malloc( sizeof(*dll) );
if (dll)
{
dll->channels = channels;
dll->nb_channels = nb;
dll->prev = NULL;
if ((dll->next = first_dll)) dll->next->prev = dll;
first_dll = dll;
/* apply existing options to this dll */
while (opt)
{
apply_option( dll, opt );
opt = opt->next;
}
}
return dll;
}
/* unregister a set of channels; must pass the pointer obtained from wine_dbg_register */
void __wine_dbg_unregister( void *channel )
{
struct dll *dll = channel;
if (dll)
{
if (dll->next) dll->next->prev = dll->prev;
if (dll->prev) dll->prev->next = dll->next;
else first_dll = dll->next;
free( dll );
}
}
/* add a new debug option at the end of the option list */
void wine_dbg_add_option( const char *name, unsigned char set, unsigned char clear )
{
struct dll *dll = first_dll;
struct debug_option *opt;
if (!(opt = malloc( sizeof(*opt) ))) return;
opt->next = NULL;
opt->set = set;
opt->clear = clear;
strncpy( opt->name, name, sizeof(opt->name) );
opt->name[sizeof(opt->name)-1] = 0;
if (last_option) last_option->next = opt;
else first_option = opt;
last_option = opt;
/* apply option to all existing dlls */
while (dll)
{
apply_option( dll, opt );
dll = dll->next;
}
}
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