C語言 生產者消費者問題

1.編寫所需標頭檔案

#include

#include

#define productor 2  

//生產者數目 為2
#define consumers 3  
//消費者數目 為3
#define buffers 10    
//緩衝區數目 為10
int nextp1 =
1000
;//生產者1生產資料
int nextp2=
2000
;//生產者2生產資料
int buf[buffers]=;
//緩衝區陣列
file *fpwrite=
fopen
("d:\\4.txt"
,"w");
//日誌檔案寫入位置

empty =

createsemaphore
(null
, buffers, buffers,
null);
//訊號量，緩衝區空位數量
full =
createsemaphore
(null,0
, buffers,
null);
//訊號量，緩衝區資料的個數
huchu =
createsemaphore
(null,1
,1,null);
//訊號量，緩衝區互斥使用

4.編寫建立執行緒函式

hthread[i]

=createthread
(null,0
, producer,
(lpvoid*
)&pid[i],0
,null);
//建立生產者執行緒
hthread[i + productor]
=createthread
(null,0
, consumer,
(lpvoid*
)&cid[i],0
,null);
//建立消費者程序

p

(empty);p
(huchu);if
(id==1)
else
//通過id判斷是哪乙個生產者，生產不同資料
v(huchu);v
(full)
;

p

(full);p
(huchu)
;fprintf
(fpwrite,
"\t\t\t\t\t\t消費者%d 將資料%d 取出緩衝區%d\n"
, id, num, out)
;out =
(out +1)
% buffers;
v(huchu);v
(empty)
;

waitformultipleobjects

(num_of_thread, hthread, true, infinite)
;printf
("寫入完成\n"
);

#include

#include
#define productor 2
#define consumers 3
#define buffers 10
#define p(s)  waitforsingleobject(s,infinite) 
#define v(s)  releasesemaphore(s,1,null)	  
int nextp1 =
1000
;int nextp2=
2000
;int in =
0, out =0;
int buf[buffers]=;	
file *fpwrite=
fopen
("d:\\4.txt"
,"w"
);  
handle empty, full;			
handle huchu;				
dword winapi producer
(lpvoid pm)
else
in =
(in +1)
% buffers;
v(huchu);v
(full);if
(nextp1 >
1200
||nextp2>
2200)}
return0;
}dword winapi consumer
(lpvoid pm)
}return0;
}int
main()
int cid[2]
;for
(int i =
0; i < consumers; i++
)waitformultipleobjects
(num_of_thread, hthread, true, infinite)
;printf
("寫入完成\n");
				
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