libs/rt-thread-official
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add errno implementation in RT-Thread.

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git-svn-id: https://rt-thread.googlecode.com/svn/trunk@1682 bbd45198-f89e-11dd-88c7-29a3b14d5316
This commit is contained in:
bernard.xiong@gmail.com 2011-08-28 15:57:10 +00:00
parent da74af2347
commit 472cc9334a
3 changed files with 28 additions and 7 deletions
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2
components/net/lwip/src/lwipopts.h
View File

@ -3,9 +3,7 @@
#include <rtconfig.h> #include <rtconfig.h>
#if defined(RT_USING_NEWLIB) || defined(RT_USING_MINILIBC)
#define ERRNO 1 #define ERRNO 1
#endif
#define NO_SYS 0 #define NO_SYS 0
#define LWIP_SOCKET 1 #define LWIP_SOCKET 1

6
include/rtthread.h
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@ -365,6 +365,12 @@ void rt_kprintf(const char *fmt, ...);
rt_err_t rt_get_errno(void); rt_err_t rt_get_errno(void);
void rt_set_errno(rt_err_t no); void rt_set_errno(rt_err_t no);
int *_rt_errno(void);
#ifndef RT_USING_NEWLIB
#ifndef errno
#define errno *_rt_errno()
#endif
#endif
void* rt_memset(void *src, int c, rt_ubase_t n); void* rt_memset(void *src, int c, rt_ubase_t n);
void* rt_memcpy(void *dest, const void *src, rt_ubase_t n); void* rt_memcpy(void *dest, const void *src, rt_ubase_t n);

27
src/kservice.c
View File

@ -27,7 +27,7 @@
#ifndef RT_USING_NEWLIB #ifndef RT_USING_NEWLIB
/* global errno in RT-Thread*/ /* global errno in RT-Thread*/
volatile int errno; static volatile int _errno;
#else #else
#include <errno.h> #include <errno.h>
#endif #endif
@ -47,11 +47,11 @@ rt_err_t rt_get_errno(void)
if(rt_interrupt_get_nest() != 0) if(rt_interrupt_get_nest() != 0)
{ {
/* it's in interrupt context */ /* it's in interrupt context */
return errno; return _errno;
} }
tid = rt_thread_self(); tid = rt_thread_self();
if (tid == RT_NULL) return errno; if (tid == RT_NULL) return _errno;
return tid->error; return tid->error;
} }
@ -68,16 +68,33 @@ void rt_set_errno(rt_err_t error)
if(rt_interrupt_get_nest() != 0) if(rt_interrupt_get_nest() != 0)
{ {
/* it's in interrupt context */ /* it's in interrupt context */
errno = error; _errno = error;
return; return;
} }
tid = rt_thread_self(); tid = rt_thread_self();
if (tid == RT_NULL) { errno = error; return; } if (tid == RT_NULL) { _errno = error; return; }
tid->error = error; tid->error = error;
} }
/**
* This function returns errno.
*
* @return the errno in the system
*/
int *_rt_errno(void)
{
rt_thread_t tid;
if (rt_interrupt_get_nest() != 0) return (int *)&_errno;
tid = rt_thread_self();
if (tid != RT_NULL) return (int *)&(tid->error);
return (int *)&_errno;
}
/** /**
* This function will set the content of memory to specified value * This function will set the content of memory to specified value
* *