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Initial revision

    1: /*
    2:  * element_cfg.c		Element Configuration
    3:  *
    4:  * Copyright (c) 2001-2013 Thomas Graf <tgraf@suug.ch>
    5:  * Copyright (c) 2013 Red Hat, Inc.
    6:  *
    7:  * Permission is hereby granted, free of charge, to any person obtaining a
    8:  * copy of this software and associated documentation files (the "Software"),
    9:  * to deal in the Software without restriction, including without limitation
   10:  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   11:  * and/or sell copies of the Software, and to permit persons to whom the
   12:  * Software is furnished to do so, subject to the following conditions:
   13:  *
   14:  * The above copyright notice and this permission notice shall be included
   15:  * in all copies or substantial portions of the Software.
   16:  *
   17:  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
   18:  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   19:  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
   20:  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   21:  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
   22:  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
   23:  * DEALINGS IN THE SOFTWARE.
   24:  */
   25: 
   26: #include <bmon/bmon.h>
   27: #include <bmon/conf.h>
   28: #include <bmon/element.h>
   29: #include <bmon/element_cfg.h>
   30: #include <bmon/utils.h>
   31: 
   32: static LIST_HEAD(cfg_list);
   33: 
   34: struct element_cfg *element_cfg_alloc(const char *name)
   35: {
   36: 	struct element_cfg *ec;
   37: 
   38: 	if ((ec = element_cfg_lookup(name))) {
   39: 		ec->ec_refcnt++;
   40: 		return ec;
   41: 	}
   42: 
   43: 	ec = xcalloc(1, sizeof(*ec));
   44: 	ec->ec_name = strdup(name);
   45: 	ec->ec_refcnt = 1;
   46: 
   47: 	list_add_tail(&ec->ec_list, &cfg_list);
   48: 
   49: 	return ec;
   50: }
   51: 
   52: struct element_cfg *element_cfg_create(const char *name)
   53: {
   54: 	struct element_cfg *cfg;
   55: 
   56: 	if (!(cfg = element_cfg_lookup(name)))
   57: 		cfg = element_cfg_alloc(name);
   58: 
   59: 	return cfg;
   60: }
   61: 
   62: static void __element_cfg_free(struct element_cfg *ec)
   63: {
   64: 	list_del(&ec->ec_list);
   65: 	
   66: 	xfree(ec->ec_name);
   67: 	xfree(ec->ec_description);
   68: 	xfree(ec);
   69: }
   70: 
   71: void element_cfg_free(struct element_cfg *ec)
   72: {
   73: 	if (!ec || --ec->ec_refcnt)
   74: 		return;
   75: 
   76: 	__element_cfg_free(ec);
   77: }
   78: 
   79: struct element_cfg *element_cfg_lookup(const char *name)
   80: {
   81: 	struct element_cfg *ec;
   82: 
   83: 	list_for_each_entry(ec, &cfg_list, ec_list)
   84: 		if (!strcmp(name, ec->ec_name))
   85: 			return ec;
   86: 	
   87: 	return NULL;
   88: }
   89: 
   90: static void __exit __element_cfg_exit(void)
   91: {
   92: 	struct element_cfg *ec, *n;
   93: 
   94: 	list_for_each_entry_safe(ec, n, &cfg_list, ec_list)
   95: 		__element_cfg_free(ec);
   96: }