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add menuetlibc sources

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git-svn-id: svn://kolibrios.org@1882 a494cfbc-eb01-0410-851d-a64ba20cac60
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CleverMouse
2011-02-21 13:30:08 +00:00
parent 39faeeed84
commit 4f5f25a6c2
1183 changed files with 107287 additions and 0 deletions
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44
programs/develop/libraries/menuetlibc/include/os_layer/queue.h Executable file
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@@ -0,0 +1,44 @@
#ifndef __QUEUE_H
#define __QUEUE_H
#include<menuet/os.h>
#include<menuet/sem.h>
typedef struct
{
int in_ptr,out_ptr,size;
unsigned char * databuf;
DECLARE_SEMAPHORE_S(q_lock);
} __oe_queue_t;
#define DECL_EMPTY_Q(n,sz,buf) __oe_queue_t n = {0,0,sz,buf,SEM_INIT}
#define __OE_QUEUE_INQ(x,c) \
({ \
register int __ret,temp; \
sem_lock(&(x)->q_lock); \
temp=(x)->in_ptr+1; \
if(temp>=(x)->size) temp=0; \
if(temp==(x)->out_ptr) { __ret=-1; goto __OEQI_D; } \
(x)->databuf[(x)->in_ptr]=(c)&0xFF; \
(x)->in_ptr=temp; \
__ret=0; \
__OEQI_D: \
sem_unlock(&(x)->q_lock); \
__ret; })
#define __OE_QUEUE_DEQ(x,c) \
({ \
register int __ret; \
register unsigned char __tmp; \
sem_lock(&(x)->q_lock); \
if((x)->out_ptr==(x)->in_ptr) { __ret=-1; goto __OEQD_D; } \
__tmp=(x)->databuf[(x)->out_ptr++]; \
if((x)->out_ptr>=(x)->size) (x)->out_ptr=0; \
__ret=0; \
(c)=__tmp; \
__OEQD_D: \
sem_unlock(&(x)->q_lock); \
__ret; })
#endif