Mihail Stoyanov / HTTPServer

My fork of the HTTPServer (working)

Dependents:   DGWWebServer LAN2

Core/lwIP/include/lwip/sys.h@0:7a64fbb4069d, 2012-08-06 (annotated)

Committer:
screamer
Date:
Mon Aug 06 09:23:14 2012 +0000
Revision:
0:7a64fbb4069d
[mbed] converted /DGWWebServer/HTTPServer

Who changed what in which revision?

UserRevisionLine numberNew contents of line
screamer 0:7a64fbb4069d 1 /*
screamer 0:7a64fbb4069d 2 * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
screamer 0:7a64fbb4069d 3 * All rights reserved.
screamer 0:7a64fbb4069d 4 *
screamer 0:7a64fbb4069d 5 * Redistribution and use in source and binary forms, with or without modification,
screamer 0:7a64fbb4069d 6 * are permitted provided that the following conditions are met:
screamer 0:7a64fbb4069d 7 *
screamer 0:7a64fbb4069d 8 * 1. Redistributions of source code must retain the above copyright notice,
screamer 0:7a64fbb4069d 9 * this list of conditions and the following disclaimer.
screamer 0:7a64fbb4069d 10 * 2. Redistributions in binary form must reproduce the above copyright notice,
screamer 0:7a64fbb4069d 11 * this list of conditions and the following disclaimer in the documentation
screamer 0:7a64fbb4069d 12 * and/or other materials provided with the distribution.
screamer 0:7a64fbb4069d 13 * 3. The name of the author may not be used to endorse or promote products
screamer 0:7a64fbb4069d 14 * derived from this software without specific prior written permission.
screamer 0:7a64fbb4069d 15 *
screamer 0:7a64fbb4069d 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
screamer 0:7a64fbb4069d 17 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
screamer 0:7a64fbb4069d 18 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
screamer 0:7a64fbb4069d 19 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
screamer 0:7a64fbb4069d 20 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
screamer 0:7a64fbb4069d 21 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
screamer 0:7a64fbb4069d 22 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
screamer 0:7a64fbb4069d 23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
screamer 0:7a64fbb4069d 24 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
screamer 0:7a64fbb4069d 25 * OF SUCH DAMAGE.
screamer 0:7a64fbb4069d 26 *
screamer 0:7a64fbb4069d 27 * This file is part of the lwIP TCP/IP stack.
screamer 0:7a64fbb4069d 28 *
screamer 0:7a64fbb4069d 29 * Author: Adam Dunkels <adam@sics.se>
screamer 0:7a64fbb4069d 30 *
screamer 0:7a64fbb4069d 31 */
screamer 0:7a64fbb4069d 32 #ifndef __LWIP_SYS_H__
screamer 0:7a64fbb4069d 33 #define __LWIP_SYS_H__
screamer 0:7a64fbb4069d 34
screamer 0:7a64fbb4069d 35 #include "lwip/opt.h"
screamer 0:7a64fbb4069d 36
screamer 0:7a64fbb4069d 37 #ifdef __cplusplus
screamer 0:7a64fbb4069d 38 extern "C" {
screamer 0:7a64fbb4069d 39 #endif
screamer 0:7a64fbb4069d 40
screamer 0:7a64fbb4069d 41 #if NO_SYS
screamer 0:7a64fbb4069d 42
screamer 0:7a64fbb4069d 43 /* For a totally minimal and standalone system, we provide null
screamer 0:7a64fbb4069d 44 definitions of the sys_ functions. */
screamer 0:7a64fbb4069d 45 typedef u8_t sys_sem_t;
screamer 0:7a64fbb4069d 46 typedef u8_t sys_mbox_t;
screamer 0:7a64fbb4069d 47 struct sys_timeo {u8_t dummy;};
screamer 0:7a64fbb4069d 48
screamer 0:7a64fbb4069d 49 #define sys_init()
screamer 0:7a64fbb4069d 50 #define sys_timeout(m,h,a)
screamer 0:7a64fbb4069d 51 #define sys_untimeout(m,a)
screamer 0:7a64fbb4069d 52 #define sys_sem_new(c) c
screamer 0:7a64fbb4069d 53 #define sys_sem_signal(s)
screamer 0:7a64fbb4069d 54 #define sys_sem_wait(s)
screamer 0:7a64fbb4069d 55 #define sys_sem_wait_timeout(s,t)
screamer 0:7a64fbb4069d 56 #define sys_arch_sem_wait(s,t)
screamer 0:7a64fbb4069d 57 #define sys_sem_free(s)
screamer 0:7a64fbb4069d 58 #define sys_mbox_new(s) 0
screamer 0:7a64fbb4069d 59 #define sys_mbox_fetch(m,d)
screamer 0:7a64fbb4069d 60 #define sys_mbox_tryfetch(m,d)
screamer 0:7a64fbb4069d 61 #define sys_mbox_post(m,d)
screamer 0:7a64fbb4069d 62 #define sys_mbox_trypost(m,d)
screamer 0:7a64fbb4069d 63 #define sys_mbox_free(m)
screamer 0:7a64fbb4069d 64
screamer 0:7a64fbb4069d 65 #define sys_thread_new(n,t,a,s,p)
screamer 0:7a64fbb4069d 66
screamer 0:7a64fbb4069d 67 #else /* NO_SYS */
screamer 0:7a64fbb4069d 68
screamer 0:7a64fbb4069d 69 /** Return code for timeouts from sys_arch_mbox_fetch and sys_arch_sem_wait */
screamer 0:7a64fbb4069d 70 #define SYS_ARCH_TIMEOUT 0xffffffffUL
screamer 0:7a64fbb4069d 71
screamer 0:7a64fbb4069d 72 /* sys_mbox_tryfetch returns SYS_MBOX_EMPTY if appropriate.
screamer 0:7a64fbb4069d 73 * For now we use the same magic value, but we allow this to change in future.
screamer 0:7a64fbb4069d 74 */
screamer 0:7a64fbb4069d 75 #define SYS_MBOX_EMPTY SYS_ARCH_TIMEOUT
screamer 0:7a64fbb4069d 76
screamer 0:7a64fbb4069d 77 #include "lwip/err.h"
screamer 0:7a64fbb4069d 78 #include "arch/sys_arch.h"
screamer 0:7a64fbb4069d 79
screamer 0:7a64fbb4069d 80 typedef void (* sys_timeout_handler)(void *arg);
screamer 0:7a64fbb4069d 81
screamer 0:7a64fbb4069d 82 struct sys_timeo {
screamer 0:7a64fbb4069d 83 struct sys_timeo *next;
screamer 0:7a64fbb4069d 84 u32_t time;
screamer 0:7a64fbb4069d 85 sys_timeout_handler h;
screamer 0:7a64fbb4069d 86 void *arg;
screamer 0:7a64fbb4069d 87 };
screamer 0:7a64fbb4069d 88
screamer 0:7a64fbb4069d 89 struct sys_timeouts {
screamer 0:7a64fbb4069d 90 struct sys_timeo *next;
screamer 0:7a64fbb4069d 91 };
screamer 0:7a64fbb4069d 92
screamer 0:7a64fbb4069d 93 /* sys_init() must be called before anthing else. */
screamer 0:7a64fbb4069d 94 void sys_init(void);
screamer 0:7a64fbb4069d 95
screamer 0:7a64fbb4069d 96 /*
screamer 0:7a64fbb4069d 97 * sys_timeout():
screamer 0:7a64fbb4069d 98 *
screamer 0:7a64fbb4069d 99 * Schedule a timeout a specified amount of milliseconds in the
screamer 0:7a64fbb4069d 100 * future. When the timeout occurs, the specified timeout handler will
screamer 0:7a64fbb4069d 101 * be called. The handler will be passed the "arg" argument when
screamer 0:7a64fbb4069d 102 * called.
screamer 0:7a64fbb4069d 103 *
screamer 0:7a64fbb4069d 104 */
screamer 0:7a64fbb4069d 105 void sys_timeout(u32_t msecs, sys_timeout_handler h, void *arg);
screamer 0:7a64fbb4069d 106 void sys_untimeout(sys_timeout_handler h, void *arg);
screamer 0:7a64fbb4069d 107 struct sys_timeouts *sys_arch_timeouts(void);
screamer 0:7a64fbb4069d 108
screamer 0:7a64fbb4069d 109 /* Semaphore functions. */
screamer 0:7a64fbb4069d 110 sys_sem_t sys_sem_new(u8_t count);
screamer 0:7a64fbb4069d 111 void sys_sem_signal(sys_sem_t sem);
screamer 0:7a64fbb4069d 112 u32_t sys_arch_sem_wait(sys_sem_t sem, u32_t timeout);
screamer 0:7a64fbb4069d 113 void sys_sem_free(sys_sem_t sem);
screamer 0:7a64fbb4069d 114 void sys_sem_wait(sys_sem_t sem);
screamer 0:7a64fbb4069d 115 int sys_sem_wait_timeout(sys_sem_t sem, u32_t timeout);
screamer 0:7a64fbb4069d 116
screamer 0:7a64fbb4069d 117 /* Time functions. */
screamer 0:7a64fbb4069d 118 #ifndef sys_msleep
screamer 0:7a64fbb4069d 119 void sys_msleep(u32_t ms); /* only has a (close to) 1 jiffy resolution. */
screamer 0:7a64fbb4069d 120 #endif
screamer 0:7a64fbb4069d 121 #ifndef sys_jiffies
screamer 0:7a64fbb4069d 122 u32_t sys_jiffies(void); /* since power up. */
screamer 0:7a64fbb4069d 123 #endif
screamer 0:7a64fbb4069d 124
screamer 0:7a64fbb4069d 125 /* Mailbox functions. */
screamer 0:7a64fbb4069d 126 sys_mbox_t sys_mbox_new(int size);
screamer 0:7a64fbb4069d 127 void sys_mbox_post(sys_mbox_t mbox, void *msg);
screamer 0:7a64fbb4069d 128 err_t sys_mbox_trypost(sys_mbox_t mbox, void *msg);
screamer 0:7a64fbb4069d 129 u32_t sys_arch_mbox_fetch(sys_mbox_t mbox, void **msg, u32_t timeout);
screamer 0:7a64fbb4069d 130 #ifndef sys_arch_mbox_tryfetch /* Allow port to override with a macro */
screamer 0:7a64fbb4069d 131 u32_t sys_arch_mbox_tryfetch(sys_mbox_t mbox, void **msg);
screamer 0:7a64fbb4069d 132 #endif
screamer 0:7a64fbb4069d 133 /* For now, we map straight to sys_arch implementation. */
screamer 0:7a64fbb4069d 134 #define sys_mbox_tryfetch(mbox, msg) sys_arch_mbox_tryfetch(mbox, msg)
screamer 0:7a64fbb4069d 135 void sys_mbox_free(sys_mbox_t mbox);
screamer 0:7a64fbb4069d 136 void sys_mbox_fetch(sys_mbox_t mbox, void **msg);
screamer 0:7a64fbb4069d 137
screamer 0:7a64fbb4069d 138 /* Thread functions. */
screamer 0:7a64fbb4069d 139 sys_thread_t sys_thread_new(char *name, void (* thread)(void *arg), void *arg, int stacksize, int prio);
screamer 0:7a64fbb4069d 140
screamer 0:7a64fbb4069d 141 #endif /* NO_SYS */
screamer 0:7a64fbb4069d 142
screamer 0:7a64fbb4069d 143 /** Returns the current time in milliseconds. */
screamer 0:7a64fbb4069d 144 u32_t sys_now(void);
screamer 0:7a64fbb4069d 145
screamer 0:7a64fbb4069d 146 /* Critical Region Protection */
screamer 0:7a64fbb4069d 147 /* These functions must be implemented in the sys_arch.c file.
screamer 0:7a64fbb4069d 148 In some implementations they can provide a more light-weight protection
screamer 0:7a64fbb4069d 149 mechanism than using semaphores. Otherwise semaphores can be used for
screamer 0:7a64fbb4069d 150 implementation */
screamer 0:7a64fbb4069d 151 #ifndef SYS_ARCH_PROTECT
screamer 0:7a64fbb4069d 152 /** SYS_LIGHTWEIGHT_PROT
screamer 0:7a64fbb4069d 153 * define SYS_LIGHTWEIGHT_PROT in lwipopts.h if you want inter-task protection
screamer 0:7a64fbb4069d 154 * for certain critical regions during buffer allocation, deallocation and memory
screamer 0:7a64fbb4069d 155 * allocation and deallocation.
screamer 0:7a64fbb4069d 156 */
screamer 0:7a64fbb4069d 157 #if SYS_LIGHTWEIGHT_PROT
screamer 0:7a64fbb4069d 158
screamer 0:7a64fbb4069d 159 /** SYS_ARCH_DECL_PROTECT
screamer 0:7a64fbb4069d 160 * declare a protection variable. This macro will default to defining a variable of
screamer 0:7a64fbb4069d 161 * type sys_prot_t. If a particular port needs a different implementation, then
screamer 0:7a64fbb4069d 162 * this macro may be defined in sys_arch.h.
screamer 0:7a64fbb4069d 163 */
screamer 0:7a64fbb4069d 164 #define SYS_ARCH_DECL_PROTECT(lev) sys_prot_t lev
screamer 0:7a64fbb4069d 165 /** SYS_ARCH_PROTECT
screamer 0:7a64fbb4069d 166 * Perform a "fast" protect. This could be implemented by
screamer 0:7a64fbb4069d 167 * disabling interrupts for an embedded system or by using a semaphore or
screamer 0:7a64fbb4069d 168 * mutex. The implementation should allow calling SYS_ARCH_PROTECT when
screamer 0:7a64fbb4069d 169 * already protected. The old protection level is returned in the variable
screamer 0:7a64fbb4069d 170 * "lev". This macro will default to calling the sys_arch_protect() function
screamer 0:7a64fbb4069d 171 * which should be implemented in sys_arch.c. If a particular port needs a
screamer 0:7a64fbb4069d 172 * different implementation, then this macro may be defined in sys_arch.h
screamer 0:7a64fbb4069d 173 */
screamer 0:7a64fbb4069d 174 #define SYS_ARCH_PROTECT(lev) lev = sys_arch_protect()
screamer 0:7a64fbb4069d 175 /** SYS_ARCH_UNPROTECT
screamer 0:7a64fbb4069d 176 * Perform a "fast" set of the protection level to "lev". This could be
screamer 0:7a64fbb4069d 177 * implemented by setting the interrupt level to "lev" within the MACRO or by
screamer 0:7a64fbb4069d 178 * using a semaphore or mutex. This macro will default to calling the
screamer 0:7a64fbb4069d 179 * sys_arch_unprotect() function which should be implemented in
screamer 0:7a64fbb4069d 180 * sys_arch.c. If a particular port needs a different implementation, then
screamer 0:7a64fbb4069d 181 * this macro may be defined in sys_arch.h
screamer 0:7a64fbb4069d 182 */
screamer 0:7a64fbb4069d 183 #define SYS_ARCH_UNPROTECT(lev) sys_arch_unprotect(lev)
screamer 0:7a64fbb4069d 184 sys_prot_t sys_arch_protect(void);
screamer 0:7a64fbb4069d 185 void sys_arch_unprotect(sys_prot_t pval);
screamer 0:7a64fbb4069d 186
screamer 0:7a64fbb4069d 187 #else
screamer 0:7a64fbb4069d 188
screamer 0:7a64fbb4069d 189 #define SYS_ARCH_DECL_PROTECT(lev)
screamer 0:7a64fbb4069d 190 #define SYS_ARCH_PROTECT(lev)
screamer 0:7a64fbb4069d 191 #define SYS_ARCH_UNPROTECT(lev)
screamer 0:7a64fbb4069d 192
screamer 0:7a64fbb4069d 193 #endif /* SYS_LIGHTWEIGHT_PROT */
screamer 0:7a64fbb4069d 194
screamer 0:7a64fbb4069d 195 #endif /* SYS_ARCH_PROTECT */
screamer 0:7a64fbb4069d 196
screamer 0:7a64fbb4069d 197 /*
screamer 0:7a64fbb4069d 198 * Macros to set/get and increase/decrease variables in a thread-safe way.
screamer 0:7a64fbb4069d 199 * Use these for accessing variable that are used from more than one thread.
screamer 0:7a64fbb4069d 200 */
screamer 0:7a64fbb4069d 201
screamer 0:7a64fbb4069d 202 #ifndef SYS_ARCH_INC
screamer 0:7a64fbb4069d 203 #define SYS_ARCH_INC(var, val) do { \
screamer 0:7a64fbb4069d 204 SYS_ARCH_DECL_PROTECT(old_level); \
screamer 0:7a64fbb4069d 205 SYS_ARCH_PROTECT(old_level); \
screamer 0:7a64fbb4069d 206 var += val; \
screamer 0:7a64fbb4069d 207 SYS_ARCH_UNPROTECT(old_level); \
screamer 0:7a64fbb4069d 208 } while(0)
screamer 0:7a64fbb4069d 209 #endif /* SYS_ARCH_INC */
screamer 0:7a64fbb4069d 210
screamer 0:7a64fbb4069d 211 #ifndef SYS_ARCH_DEC
screamer 0:7a64fbb4069d 212 #define SYS_ARCH_DEC(var, val) do { \
screamer 0:7a64fbb4069d 213 SYS_ARCH_DECL_PROTECT(old_level); \
screamer 0:7a64fbb4069d 214 SYS_ARCH_PROTECT(old_level); \
screamer 0:7a64fbb4069d 215 var -= val; \
screamer 0:7a64fbb4069d 216 SYS_ARCH_UNPROTECT(old_level); \
screamer 0:7a64fbb4069d 217 } while(0)
screamer 0:7a64fbb4069d 218 #endif /* SYS_ARCH_DEC */
screamer 0:7a64fbb4069d 219
screamer 0:7a64fbb4069d 220 #ifndef SYS_ARCH_GET
screamer 0:7a64fbb4069d 221 #define SYS_ARCH_GET(var, ret) do { \
screamer 0:7a64fbb4069d 222 SYS_ARCH_DECL_PROTECT(old_level); \
screamer 0:7a64fbb4069d 223 SYS_ARCH_PROTECT(old_level); \
screamer 0:7a64fbb4069d 224 ret = var; \
screamer 0:7a64fbb4069d 225 SYS_ARCH_UNPROTECT(old_level); \
screamer 0:7a64fbb4069d 226 } while(0)
screamer 0:7a64fbb4069d 227 #endif /* SYS_ARCH_GET */
screamer 0:7a64fbb4069d 228
screamer 0:7a64fbb4069d 229 #ifndef SYS_ARCH_SET
screamer 0:7a64fbb4069d 230 #define SYS_ARCH_SET(var, val) do { \
screamer 0:7a64fbb4069d 231 SYS_ARCH_DECL_PROTECT(old_level); \
screamer 0:7a64fbb4069d 232 SYS_ARCH_PROTECT(old_level); \
screamer 0:7a64fbb4069d 233 var = val; \
screamer 0:7a64fbb4069d 234 SYS_ARCH_UNPROTECT(old_level); \
screamer 0:7a64fbb4069d 235 } while(0)
screamer 0:7a64fbb4069d 236 #endif /* SYS_ARCH_SET */
screamer 0:7a64fbb4069d 237
screamer 0:7a64fbb4069d 238
screamer 0:7a64fbb4069d 239 #ifdef __cplusplus
screamer 0:7a64fbb4069d 240 }
screamer 0:7a64fbb4069d 241 #endif
screamer 0:7a64fbb4069d 242
screamer 0:7a64fbb4069d 243 #endif /* __LWIP_SYS_H__ */