filter.c

linux下的多线程调试工具

/* Copyright (C) 2004,2005,2006  Bull S.A.
 *
 * 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
 */

#if HAVE_CONFIG_H
#include <config.h>
#endif

#include "types.h"
#include "glib_hash.h"
#include "modules.h"

static int *eventtable;
static GHashTable *hashtable_pid, *hashtable_object;
static int ok = 1;
static int pid_search = 0, name_search = 0;

static int init (pid_t *list_pid, int *list_event, char **list_name) {
    int i;
    if (list_pid) {
        hashtable_pid = g_hash_table_new (g_int_hash, g_int_equal);
        pid_search = 1;
        for (i = 0; list_pid[i]; i++)
            g_hash_table_insert (hashtable_pid, list_pid + i, &ok);
    }
    eventtable = list_event;
    if (list_name) {
        hashtable_object = g_hash_table_new (g_str_hash, g_str_equal);
        name_search = 1;
        for (i = 0; list_name[i]; i++)
            g_hash_table_insert (hashtable_object, list_name[i], &ok);
    }
    return 0;
}

static int accept (pid_t pid, ptt_event_t event, char **list_name) {
    if (pid_search && g_hash_table_lookup (hashtable_pid, &pid) == NULL)
        return 0;
    if (eventtable[event] == 0) return 0;

    if (name_search) {
        int i;
        for(i = 0; list_name[i]; i++)
            if (g_hash_table_lookup (hashtable_object, list_name[i])) break;
        if (list_name[i] == 0) return 0;
    }
    return 1;
}

static void close () {
    if (pid_search) g_hash_table_destroy (hashtable_pid);
    if (name_search) g_hash_table_destroy (hashtable_object);
}

struct filter filter = {
    .init = init,
    .accept = accept,
    .close = close
};