FreeBSD/Linux Kernel Cross Reference
sys/dev/drm2/drm_gem_names.h

     /*-
      * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
      *
      * Copyright (c) 2011 The FreeBSD Foundation
      * All rights reserved.
      *
      * This software was developed by Konstantin Belousov under sponsorship from
      * the FreeBSD Foundation.
      *
     * Redistribution and use in source and binary forms, with or without
     * modification, are permitted provided that the following conditions
     * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     * SUCH DAMAGE.
     *
     * $FreeBSD$
     *
     */
    
    #ifndef DRM_GEM_NAMES_H
    #define DRM_GEM_NAMES_H
    
    #include <sys/types.h>
    #include <sys/lock.h>
    #include <sys/mutex.h>
    #include <sys/queue.h>
    
    struct drm_gem_name {
            uint32_t name;
            void *ptr;
            LIST_ENTRY(drm_gem_name) link;
    };
    
    struct drm_gem_names {
            struct mtx lock;
            LIST_HEAD(drm_gem_names_head, drm_gem_name) *names_hash;
            u_long hash_mask;
            struct unrhdr *unr;
    };
    
    void drm_gem_names_init(struct drm_gem_names *names);
    void drm_gem_names_fini(struct drm_gem_names *names);
    uint32_t drm_gem_find_name(struct drm_gem_names *names, void *ptr);
    void *drm_gem_find_ptr(struct drm_gem_names *names, uint32_t name);
    void *drm_gem_name_ref(struct drm_gem_names *names, uint32_t name,
        void (*ref)(void *));
    int drm_gem_name_create(struct drm_gem_names *names, void *obj, uint32_t *name);
    void drm_gem_names_foreach(struct drm_gem_names *names,
        int (*f)(uint32_t, void *, void *), void *arg);
    void *drm_gem_names_remove(struct drm_gem_names *names, uint32_t name);
    
    #endif

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