Archipelago » qemu

/*

 * QEMU Module Infrastructure

 *

 * Copyright IBM, Corp. 2009

 *

 * Authors:

 *  Anthony Liguori   <aliguori@us.ibm.com>

 *

 * This work is licensed under the terms of the GNU GPL, version 2.  See

 * the COPYING file in the top-level directory.

 *

 */

#include "qemu-common.h"

#include "sys-queue.h"

#include "module.h"

typedef struct ModuleEntry

{

    module_init_type type;

    void (*init)(void);

    TAILQ_ENTRY(ModuleEntry) node;

} ModuleEntry;

typedef TAILQ_HEAD(, ModuleEntry) ModuleTypeList;

static ModuleTypeList init_type_list[MODULE_INIT_MAX];

static void init_types(void)

{

    static int inited;

    int i;

    if (inited) {

        return;

    }

    for (i = 0; i < MODULE_INIT_MAX; i++) {

        TAILQ_INIT(&init_type_list[i]);

    }

    inited = 1;

}

static ModuleTypeList *find_type(module_init_type type)

{

    ModuleTypeList *l;

    init_types();

    l = &init_type_list[type];

    return l;

}

void register_module_init(void (*fn)(void), module_init_type type)

{

    ModuleEntry *e;

    ModuleTypeList *l;

    e = qemu_mallocz(sizeof(*e));

    e->init = fn;

    l = find_type(type);

    TAILQ_INSERT_TAIL(l, e, node);

}

void module_call_init(module_init_type type)

{

    ModuleTypeList *l;

    ModuleEntry *e;

    l = find_type(type);

    TAILQ_FOREACH(e, l, node) {

        e->init();

    }

}