[babeltrace.git] / formats / registry.c

/*
 * BabelTrace
 *
 * Format Registry
 *
 * Copyright 2010 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 */

#include <glib.h>
#include <errno.h>

static int init_done;
void __attribute__((constructor)) format_init(void);
void __attribute__((destructor)) format_finalize(void);

/*
 * Format registry hash table contains the registered formats. Format
 * registration is typically performed by a format plugin.
 * TODO: support plugin unload (unregistration of formats).
 */
GHashTable *format_registry;

struct format *bt_lookup_format(GQuark qname)
{
	if (!init_done)
		return NULL;
	return g_hash_table_lookup(format_registry,
				   (gconstpointer) (unsigned long) qname)
}

int bt_register_format(const struct format *format)
{
	if (!init_done)
		format_init();

	if (bt_lookup_format(qname))
		return -EEXIST;

	g_hash_table_insert(format_registry,
			    (gconstpointer) (unsigned long) format->name,
			    format);
	return 0;
}

void format_init(void)
{
	format_registry = g_hash_table_new(g_direct_hash, g_direct_equal);
	assert(format_registry);
	init_done = 1;
}

int format_finalize(void)
{
	g_hash_table_destroy(format_registry);
}
Commit	Line	Data
	1	/*
	2	* BabelTrace
	3	*
	4	* Format Registry
	5	*
	6	* Copyright 2010 - Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
	7	*
	8	* Permission is hereby granted, free of charge, to any person obtaining a copy
	9	* of this software and associated documentation files (the "Software"), to deal
	10	* in the Software without restriction, including without limitation the rights
	11	* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
	12	* copies of the Software, and to permit persons to whom the Software is
	13	* furnished to do so, subject to the following conditions:
	14	*
	15	* The above copyright notice and this permission notice shall be included in
	16	* all copies or substantial portions of the Software.
	17	*/
	18
	19	#include <glib.h>
	20	#include <errno.h>
	21
	22	static int init_done;
	23	void __attribute__((constructor)) format_init(void);
	24	void __attribute__((destructor)) format_finalize(void);
	25
	26	/*
	27	* Format registry hash table contains the registered formats. Format
	28	* registration is typically performed by a format plugin.
	29	* TODO: support plugin unload (unregistration of formats).
	30	*/
	31	GHashTable *format_registry;
	32
	33	struct format *bt_lookup_format(GQuark qname)
	34	{
	35	if (!init_done)
	36	return NULL;
	37	return g_hash_table_lookup(format_registry,
	38	(gconstpointer) (unsigned long) qname)
	39	}
	40
	41	int bt_register_format(const struct format *format)
	42	{
	43	if (!init_done)
	44	format_init();
	45
	46	if (bt_lookup_format(qname))
	47	return -EEXIST;
	48
	49	g_hash_table_insert(format_registry,
	50	(gconstpointer) (unsigned long) format->name,
	51	format);
	52	return 0;
	53	}
	54
	55	void format_init(void)
	56	{
	57	format_registry = g_hash_table_new(g_direct_hash, g_direct_equal);
	58	assert(format_registry);
	59	init_done = 1;
	60	}
	61
	62	int format_finalize(void)
	63	{
	64	g_hash_table_destroy(format_registry);
	65	}