119 lines
2.9 KiB
C
119 lines
2.9 KiB
C
/*
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* Management of the debugging channels
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*
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* Copyright 2000 Alexandre Julliard
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*/
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <ctype.h>
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struct dll
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{
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struct dll *next; /* linked list of dlls */
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struct dll *prev;
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char * const *channels; /* array of channels */
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int nb_channels; /* number of channels in array */
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};
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static struct dll *first_dll;
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struct option
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{
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struct option *next; /* next option in list */
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unsigned char set; /* bits to set */
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unsigned char clear; /* bits to clear */
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char name[14]; /* channel name, or empty for "all" */
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};
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static struct option *first_option;
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static struct option *last_option;
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static int cmp_name( const void *p1, const void *p2 )
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{
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const char *name = p1;
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const char * const *chan = p2;
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return strcmp( name, *chan + 1 );
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}
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/* apply a debug option to the channels of a given dll */
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static void apply_option( struct dll *dll, const struct option *opt )
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{
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if (opt->name[0])
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{
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char **dbch = bsearch( opt->name, dll->channels, dll->nb_channels,
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sizeof(*dll->channels), cmp_name );
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if (dbch) **dbch = (**dbch & ~opt->clear) | opt->set;
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}
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else /* all */
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{
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int i;
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for (i = 0; i < dll->nb_channels; i++)
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dll->channels[i][0] = (dll->channels[i][0] & ~opt->clear) | opt->set;
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}
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}
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/* register a new set of channels for a dll */
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void *__wine_dbg_register( char * const *channels, int nb )
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{
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struct option *opt = first_option;
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struct dll *dll = malloc( sizeof(*dll) );
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if (dll)
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{
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dll->channels = channels;
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dll->nb_channels = nb;
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dll->prev = NULL;
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if ((dll->next = first_dll)) dll->next->prev = dll;
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first_dll = dll;
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/* apply existing options to this dll */
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while (opt)
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{
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apply_option( dll, opt );
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opt = opt->next;
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}
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}
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return dll;
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}
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/* unregister a set of channels; must pass the pointer obtained from wine_dbg_register */
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void __wine_dbg_unregister( void *channel )
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{
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struct dll *dll = channel;
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if (dll)
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{
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if (dll->next) dll->next->prev = dll->prev;
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if (dll->prev) dll->prev->next = dll->next;
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else first_dll = dll->next;
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free( dll );
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}
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}
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/* add a new debug option at the end of the option list */
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void wine_dbg_add_option( const char *name, unsigned char set, unsigned char clear )
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{
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struct dll *dll = first_dll;
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struct option *opt;
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if (!(opt = malloc( sizeof(*opt) ))) return;
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opt->next = NULL;
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opt->set = set;
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opt->clear = clear;
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strncpy( opt->name, name, sizeof(opt->name) );
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opt->name[sizeof(opt->name)-1] = 0;
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if (last_option) last_option->next = opt;
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else first_option = opt;
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last_option = opt;
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/* apply option to all existing dlls */
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while (dll)
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{
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apply_option( dll, opt );
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dll = dll->next;
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}
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}
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