UbixOS V2  2.0
sys.c
Go to the documentation of this file.
1 
7 /*
8  * Copyright (c) 2001-2004 Swedish Institute of Computer Science.
9  * All rights reserved.
10  *
11  * Redistribution and use in source and binary forms, with or without modification,
12  * are permitted provided that the following conditions are met:
13  *
14  * 1. Redistributions of source code must retain the above copyright notice,
15  * this list of conditions and the following disclaimer.
16  * 2. Redistributions in binary form must reproduce the above copyright notice,
17  * this list of conditions and the following disclaimer in the documentation
18  * and/or other materials provided with the distribution.
19  * 3. The name of the author may not be used to endorse or promote products
20  * derived from this software without specific prior written permission.
21  *
22  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
23  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
24  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
25  * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
26  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
27  * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
28  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
29  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
30  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
31  * OF SUCH DAMAGE.
32  *
33  * This file is part of the lwIP TCP/IP stack.
34  *
35  * Author: Adam Dunkels <adam@sics.se>
36  *
37  */
38 
77 #include "net/opt.h"
78 
79 #include "net/sys.h"
80 
81 /* Most of the functions defined in sys.h must be implemented in the
82  * architecture-dependent file sys_arch.c */
83 
84 #if !NO_SYS
85 
86 #ifndef sys_msleep
87 
92 void
93 sys_msleep(u32_t ms)
94 {
95  if (ms > 0) {
96  sys_sem_t delaysem;
97  err_t err = sys_sem_new(&delaysem, 0);
98  if (err == ERR_OK) {
99  sys_arch_sem_wait(&delaysem, ms);
100  sys_sem_free(&delaysem);
101  }
102  }
103 }
104 #endif /* sys_msleep */
105 
106 #endif /* !NO_SYS */
sys.h
opt.h
sys_sem_new
err_t sys_sem_new(sys_sem_t **sem, u8_t count)
Definition: sys_arch.c:52
sys_sem_free
void sys_sem_free(sys_sem_t **sem)
Definition: sys_arch.c:75
sys_arch_sem_wait
uint32_t sys_arch_sem_wait(struct sys_sem **s, uint32_t timeout)
Definition: sys_arch.c:105
u32_t
uint32_t u32_t
Definition: arch.h:126
sys_sem
Definition: sem.h:36
sys_msleep
void sys_msleep(u32_t ms)
Definition: sys.c:93
ERR_OK
Definition: err.h:63
err_t
s8_t err_t
Definition: err.h:57