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bmon 3.3

    1: /*
    2:  * output.c               Output API
    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/output.h>
   28: #include <bmon/module.h>
   29: #include <bmon/conf.h>
   30: #include <bmon/group.h>
   31: #include <bmon/utils.h>
   32: 
   33: static struct bmon_subsys output_subsys;
   34: 
   35: void output_register(struct bmon_module *m)
   36: {
   37: 	module_register(&output_subsys, m);
   38: }
   39: 
   40: static void activate_default(void)
   41: {
   42: 	/*
   43: 	 * Try to activate a default output module if the user did not make
   44: 	 * a selection
   45: 	 */
   46: 	if (!output_subsys.s_nmod) {
   47: 		struct bmon_module *m;
   48: 
   49: 		if (!output_set("curses"))
   50: 			return;
   51: 
   52: 		if (!output_set("ascii"))
   53: 			return;
   54: 
   55: 		/* Fall back to anything that could act as default */
   56: 		list_for_each_entry(m, &output_subsys.s_mod_list, m_list) {
   57: 			if (m->m_flags & BMON_MODULE_DEFAULT)
   58: 				if (!output_set(m->m_name))
   59: 					return;
   60: 		}
   61: 
   62: 		quit("No output module found\n");
   63: 	}
   64: }
   65: 
   66: void output_pre(void)
   67: {
   68: 	module_foreach_run_enabled_pre(&output_subsys);
   69: }
   70: 					
   71: void output_draw(void)
   72: {
   73: 	module_foreach_run_enabled(&output_subsys);
   74: }
   75: 
   76: void output_post(void)
   77: {
   78: 	module_foreach_run_enabled_post(&output_subsys);
   79: }
   80: 
   81: int output_set(const char *name)
   82: {
   83: 	return module_set(&output_subsys, name);
   84: }
   85: 
   86: static struct bmon_subsys output_subsys = {
   87: 	.s_name			= "output",
   88: 	.s_activate_default	= &activate_default,
   89: 	.s_mod_list		= LIST_SELF(output_subsys.s_mod_list),
   90: };
   91: 
   92: static void __init __output_init(void)
   93: {
   94: 	return module_register_subsys(&output_subsys);
   95: }