1 /********************************************************************* 2 * 3 * Filename: irqueue.h 4 * Version: 0.3 5 * Description: General queue implementation 6 * Status: Experimental. 7 * Author: Dag Brattli <dagb@cs.uit.no> 8 * Created at: Tue Jun 9 13:26:50 1998 9 * Modified at: Thu Oct 7 13:25:16 1999 10 * Modified by: Dag Brattli <dagb@cs.uit.no> 11 * 12 * Copyright (C) 1998-1999, Aage Kvalnes <aage@cs.uit.no> 13 * Copyright (c) 1998, Dag Brattli 14 * All Rights Reserved. 15 * 16 * This code is taken from the Vortex Operating System written by Aage 17 * Kvalnes and has been ported to Linux and Linux/IR by Dag Brattli 18 * 19 * This program is free software; you can redistribute it and/or 20 * modify it under the terms of the GNU General Public License as 21 * published by the Free Software Foundation; either version 2 of 22 * the License, or (at your option) any later version. 23 * 24 * Neither Dag Brattli nor University of Tromsø admit liability nor 25 * provide warranty for any of this software. This material is 26 * provided "AS-IS" and at no charge. 27 * 28 ********************************************************************/ 29 30 #include <linux/types.h> 31 #include <linux/spinlock.h> 32 33 #ifndef IRDA_QUEUE_H 34 #define IRDA_QUEUE_H 35 36 #define NAME_SIZE 32 37 38 /* 39 * Hash types (some flags can be xored) 40 * See comments in irqueue.c for which one to use... 41 */ 42 #define HB_NOLOCK 0 /* No concurent access prevention */ 43 #define HB_LOCK 1 /* Prevent concurent write with global lock */ 44 45 /* 46 * Hash defines 47 */ 48 #define HASHBIN_SIZE 8 49 #define HASHBIN_MASK 0x7 50 51 #ifndef IRDA_ALIGN 52 #define IRDA_ALIGN __attribute__((aligned)) 53 #endif 54 55 #define Q_NULL { NULL, NULL, "", 0 } 56 57 typedef void (*FREE_FUNC)(void *arg); 58 59 struct irda_queue { 60 struct irda_queue *q_next; 61 struct irda_queue *q_prev; 62 63 char q_name[NAME_SIZE]; 64 long q_hash; /* Must be able to cast a (void *) */ 65 }; 66 typedef struct irda_queue irda_queue_t; 67 68 typedef struct hashbin_t { 69 __u32 magic; 70 int hb_type; 71 int hb_size; 72 spinlock_t hb_spinlock; /* HB_LOCK - Can be used by the user */ 73 74 irda_queue_t* hb_queue[HASHBIN_SIZE] IRDA_ALIGN; 75 76 irda_queue_t* hb_current; 77 } hashbin_t; 78 79 hashbin_t *hashbin_new(int type); 80 int hashbin_delete(hashbin_t* hashbin, FREE_FUNC func); 81 int hashbin_clear(hashbin_t* hashbin, FREE_FUNC free_func); 82 void hashbin_insert(hashbin_t* hashbin, irda_queue_t* entry, long hashv, 83 const char* name); 84 void* hashbin_remove(hashbin_t* hashbin, long hashv, const char* name); 85 void* hashbin_remove_first(hashbin_t *hashbin); 86 void* hashbin_remove_this( hashbin_t* hashbin, irda_queue_t* entry); 87 void* hashbin_find(hashbin_t* hashbin, long hashv, const char* name); 88 void* hashbin_lock_find(hashbin_t* hashbin, long hashv, const char* name); 89 void* hashbin_find_next(hashbin_t* hashbin, long hashv, const char* name, 90 void ** pnext); 91 irda_queue_t *hashbin_get_first(hashbin_t *hashbin); 92 irda_queue_t *hashbin_get_next(hashbin_t *hashbin); 93 94 #define HASHBIN_GET_SIZE(hashbin) hashbin->hb_size 95 96 #endif 97