CK Sin / Mbed 2 deprecated Ethernetwebsocket

Ethernetwebsoc

Dependencies:   C12832_lcd LM75B WebSocketClient mbed-rtos mbed Socket lwip-eth lwip-sys lwip

mbed-rtos/rtx/rt_MemBox.c@0:0ed2a7c7190c, 2013-05-31 (annotated)

Committer:
GordonSin
Date:
Fri May 31 04:09:54 2013 +0000
Revision:
0:0ed2a7c7190c
31/5/2013;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
GordonSin 0:0ed2a7c7190c 1 /*----------------------------------------------------------------------------
GordonSin 0:0ed2a7c7190c 2 * RL-ARM - RTX
GordonSin 0:0ed2a7c7190c 3 *----------------------------------------------------------------------------
GordonSin 0:0ed2a7c7190c 4 * Name: RT_MEMBOX.C
GordonSin 0:0ed2a7c7190c 5 * Purpose: Interface functions for fixed memory block management system
GordonSin 0:0ed2a7c7190c 6 * Rev.: V4.50
GordonSin 0:0ed2a7c7190c 7 *----------------------------------------------------------------------------
GordonSin 0:0ed2a7c7190c 8 *
GordonSin 0:0ed2a7c7190c 9 * Copyright (c) 1999-2009 KEIL, 2009-2012 ARM Germany GmbH
GordonSin 0:0ed2a7c7190c 10 * All rights reserved.
GordonSin 0:0ed2a7c7190c 11 * Redistribution and use in source and binary forms, with or without
GordonSin 0:0ed2a7c7190c 12 * modification, are permitted provided that the following conditions are met:
GordonSin 0:0ed2a7c7190c 13 * - Redistributions of source code must retain the above copyright
GordonSin 0:0ed2a7c7190c 14 * notice, this list of conditions and the following disclaimer.
GordonSin 0:0ed2a7c7190c 15 * - Redistributions in binary form must reproduce the above copyright
GordonSin 0:0ed2a7c7190c 16 * notice, this list of conditions and the following disclaimer in the
GordonSin 0:0ed2a7c7190c 17 * documentation and/or other materials provided with the distribution.
GordonSin 0:0ed2a7c7190c 18 * - Neither the name of ARM nor the names of its contributors may be used
GordonSin 0:0ed2a7c7190c 19 * to endorse or promote products derived from this software without
GordonSin 0:0ed2a7c7190c 20 * specific prior written permission.
GordonSin 0:0ed2a7c7190c 21 *
GordonSin 0:0ed2a7c7190c 22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
GordonSin 0:0ed2a7c7190c 23 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
GordonSin 0:0ed2a7c7190c 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
GordonSin 0:0ed2a7c7190c 25 * ARE DISCLAIMED. IN NO EVENT SHALL COPYRIGHT HOLDERS AND CONTRIBUTORS BE
GordonSin 0:0ed2a7c7190c 26 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
GordonSin 0:0ed2a7c7190c 27 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
GordonSin 0:0ed2a7c7190c 28 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
GordonSin 0:0ed2a7c7190c 29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
GordonSin 0:0ed2a7c7190c 30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
GordonSin 0:0ed2a7c7190c 31 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
GordonSin 0:0ed2a7c7190c 32 * POSSIBILITY OF SUCH DAMAGE.
GordonSin 0:0ed2a7c7190c 33 *---------------------------------------------------------------------------*/
GordonSin 0:0ed2a7c7190c 34
GordonSin 0:0ed2a7c7190c 35 #include "rt_TypeDef.h"
GordonSin 0:0ed2a7c7190c 36 #include "RTX_Config.h"
GordonSin 0:0ed2a7c7190c 37 #include "rt_System.h"
GordonSin 0:0ed2a7c7190c 38 #include "rt_MemBox.h"
GordonSin 0:0ed2a7c7190c 39 #include "rt_HAL_CM.h"
GordonSin 0:0ed2a7c7190c 40
GordonSin 0:0ed2a7c7190c 41 /*----------------------------------------------------------------------------
GordonSin 0:0ed2a7c7190c 42 * Global Functions
GordonSin 0:0ed2a7c7190c 43 *---------------------------------------------------------------------------*/
GordonSin 0:0ed2a7c7190c 44
GordonSin 0:0ed2a7c7190c 45
GordonSin 0:0ed2a7c7190c 46 /*--------------------------- _init_box -------------------------------------*/
GordonSin 0:0ed2a7c7190c 47
GordonSin 0:0ed2a7c7190c 48 int _init_box (void *box_mem, U32 box_size, U32 blk_size) {
GordonSin 0:0ed2a7c7190c 49 /* Initialize memory block system, returns 0 if OK, 1 if fails. */
GordonSin 0:0ed2a7c7190c 50 void *end;
GordonSin 0:0ed2a7c7190c 51 void *blk;
GordonSin 0:0ed2a7c7190c 52 void *next;
GordonSin 0:0ed2a7c7190c 53 U32 sizeof_bm;
GordonSin 0:0ed2a7c7190c 54
GordonSin 0:0ed2a7c7190c 55 /* Create memory structure. */
GordonSin 0:0ed2a7c7190c 56 if (blk_size & BOX_ALIGN_8) {
GordonSin 0:0ed2a7c7190c 57 /* Memory blocks 8-byte aligned. */
GordonSin 0:0ed2a7c7190c 58 blk_size = ((blk_size & ~BOX_ALIGN_8) + 7) & ~7;
GordonSin 0:0ed2a7c7190c 59 sizeof_bm = (sizeof (struct OS_BM) + 7) & ~7;
GordonSin 0:0ed2a7c7190c 60 }
GordonSin 0:0ed2a7c7190c 61 else {
GordonSin 0:0ed2a7c7190c 62 /* Memory blocks 4-byte aligned. */
GordonSin 0:0ed2a7c7190c 63 blk_size = (blk_size + 3) & ~3;
GordonSin 0:0ed2a7c7190c 64 sizeof_bm = sizeof (struct OS_BM);
GordonSin 0:0ed2a7c7190c 65 }
GordonSin 0:0ed2a7c7190c 66 if (blk_size == 0) {
GordonSin 0:0ed2a7c7190c 67 return (1);
GordonSin 0:0ed2a7c7190c 68 }
GordonSin 0:0ed2a7c7190c 69 if ((blk_size + sizeof_bm) > box_size) {
GordonSin 0:0ed2a7c7190c 70 return (1);
GordonSin 0:0ed2a7c7190c 71 }
GordonSin 0:0ed2a7c7190c 72 /* Create a Memory structure. */
GordonSin 0:0ed2a7c7190c 73 blk = ((U8 *) box_mem) + sizeof_bm;
GordonSin 0:0ed2a7c7190c 74 ((P_BM) box_mem)->free = blk;
GordonSin 0:0ed2a7c7190c 75 end = ((U8 *) box_mem) + box_size;
GordonSin 0:0ed2a7c7190c 76 ((P_BM) box_mem)->end = end;
GordonSin 0:0ed2a7c7190c 77 ((P_BM) box_mem)->blk_size = blk_size;
GordonSin 0:0ed2a7c7190c 78
GordonSin 0:0ed2a7c7190c 79 /* Link all free blocks using offsets. */
GordonSin 0:0ed2a7c7190c 80 end = ((U8 *) end) - blk_size;
GordonSin 0:0ed2a7c7190c 81 while (1) {
GordonSin 0:0ed2a7c7190c 82 next = ((U8 *) blk) + blk_size;
GordonSin 0:0ed2a7c7190c 83 if (next > end) break;
GordonSin 0:0ed2a7c7190c 84 *((void **)blk) = next;
GordonSin 0:0ed2a7c7190c 85 blk = next;
GordonSin 0:0ed2a7c7190c 86 }
GordonSin 0:0ed2a7c7190c 87 /* end marker */
GordonSin 0:0ed2a7c7190c 88 *((void **)blk) = 0;
GordonSin 0:0ed2a7c7190c 89 return (0);
GordonSin 0:0ed2a7c7190c 90 }
GordonSin 0:0ed2a7c7190c 91
GordonSin 0:0ed2a7c7190c 92 /*--------------------------- rt_alloc_box ----------------------------------*/
GordonSin 0:0ed2a7c7190c 93
GordonSin 0:0ed2a7c7190c 94 void *rt_alloc_box (void *box_mem) {
GordonSin 0:0ed2a7c7190c 95 /* Allocate a memory block and return start address. */
GordonSin 0:0ed2a7c7190c 96 void **free;
GordonSin 0:0ed2a7c7190c 97 #ifndef __USE_EXCLUSIVE_ACCESS
GordonSin 0:0ed2a7c7190c 98 int irq_dis;
GordonSin 0:0ed2a7c7190c 99
GordonSin 0:0ed2a7c7190c 100 irq_dis = __disable_irq ();
GordonSin 0:0ed2a7c7190c 101 free = ((P_BM) box_mem)->free;
GordonSin 0:0ed2a7c7190c 102 if (free) {
GordonSin 0:0ed2a7c7190c 103 ((P_BM) box_mem)->free = *free;
GordonSin 0:0ed2a7c7190c 104 }
GordonSin 0:0ed2a7c7190c 105 if (!irq_dis) __enable_irq ();
GordonSin 0:0ed2a7c7190c 106 #else
GordonSin 0:0ed2a7c7190c 107 do {
GordonSin 0:0ed2a7c7190c 108 if ((free = (void **)__ldrex(&((P_BM) box_mem)->free)) == 0) {
GordonSin 0:0ed2a7c7190c 109 __clrex();
GordonSin 0:0ed2a7c7190c 110 break;
GordonSin 0:0ed2a7c7190c 111 }
GordonSin 0:0ed2a7c7190c 112 } while (__strex((U32)*free, &((P_BM) box_mem)->free));
GordonSin 0:0ed2a7c7190c 113 #endif
GordonSin 0:0ed2a7c7190c 114 return (free);
GordonSin 0:0ed2a7c7190c 115 }
GordonSin 0:0ed2a7c7190c 116
GordonSin 0:0ed2a7c7190c 117
GordonSin 0:0ed2a7c7190c 118 /*--------------------------- _calloc_box -----------------------------------*/
GordonSin 0:0ed2a7c7190c 119
GordonSin 0:0ed2a7c7190c 120 void *_calloc_box (void *box_mem) {
GordonSin 0:0ed2a7c7190c 121 /* Allocate a 0-initialized memory block and return start address. */
GordonSin 0:0ed2a7c7190c 122 void *free;
GordonSin 0:0ed2a7c7190c 123 U32 *p;
GordonSin 0:0ed2a7c7190c 124 U32 i;
GordonSin 0:0ed2a7c7190c 125
GordonSin 0:0ed2a7c7190c 126 free = _alloc_box (box_mem);
GordonSin 0:0ed2a7c7190c 127 if (free) {
GordonSin 0:0ed2a7c7190c 128 p = free;
GordonSin 0:0ed2a7c7190c 129 for (i = ((P_BM) box_mem)->blk_size; i; i -= 4) {
GordonSin 0:0ed2a7c7190c 130 *p = 0;
GordonSin 0:0ed2a7c7190c 131 p++;
GordonSin 0:0ed2a7c7190c 132 }
GordonSin 0:0ed2a7c7190c 133 }
GordonSin 0:0ed2a7c7190c 134 return (free);
GordonSin 0:0ed2a7c7190c 135 }
GordonSin 0:0ed2a7c7190c 136
GordonSin 0:0ed2a7c7190c 137
GordonSin 0:0ed2a7c7190c 138 /*--------------------------- rt_free_box -----------------------------------*/
GordonSin 0:0ed2a7c7190c 139
GordonSin 0:0ed2a7c7190c 140 int rt_free_box (void *box_mem, void *box) {
GordonSin 0:0ed2a7c7190c 141 /* Free a memory block, returns 0 if OK, 1 if box does not belong to box_mem */
GordonSin 0:0ed2a7c7190c 142 #ifndef __USE_EXCLUSIVE_ACCESS
GordonSin 0:0ed2a7c7190c 143 int irq_dis;
GordonSin 0:0ed2a7c7190c 144 #endif
GordonSin 0:0ed2a7c7190c 145
GordonSin 0:0ed2a7c7190c 146 if (box < box_mem || box >= ((P_BM) box_mem)->end) {
GordonSin 0:0ed2a7c7190c 147 return (1);
GordonSin 0:0ed2a7c7190c 148 }
GordonSin 0:0ed2a7c7190c 149
GordonSin 0:0ed2a7c7190c 150 #ifndef __USE_EXCLUSIVE_ACCESS
GordonSin 0:0ed2a7c7190c 151 irq_dis = __disable_irq ();
GordonSin 0:0ed2a7c7190c 152 *((void **)box) = ((P_BM) box_mem)->free;
GordonSin 0:0ed2a7c7190c 153 ((P_BM) box_mem)->free = box;
GordonSin 0:0ed2a7c7190c 154 if (!irq_dis) __enable_irq ();
GordonSin 0:0ed2a7c7190c 155 #else
GordonSin 0:0ed2a7c7190c 156 do {
GordonSin 0:0ed2a7c7190c 157 *((void **)box) = (void *)__ldrex(&((P_BM) box_mem)->free);
GordonSin 0:0ed2a7c7190c 158 } while (__strex ((U32)box, &((P_BM) box_mem)->free));
GordonSin 0:0ed2a7c7190c 159 #endif
GordonSin 0:0ed2a7c7190c 160 return (0);
GordonSin 0:0ed2a7c7190c 161 }
GordonSin 0:0ed2a7c7190c 162
GordonSin 0:0ed2a7c7190c 163 /*----------------------------------------------------------------------------
GordonSin 0:0ed2a7c7190c 164 * end of file
GordonSin 0:0ed2a7c7190c 165 *---------------------------------------------------------------------------*/
GordonSin 0:0ed2a7c7190c 166