这段代码我已经看明白了，我根据这段代码自己写了如下的三段代码，不过结果不对！
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k` M6K%V4vs1R+KhG#include <stdio.h>
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#include <sys/shm.h>
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CLinux伊甸园论坛#include <sys/ipc.h>
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j)I5x ~-M%A MIwww.linuxeden.com#include <unistd.h>
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,?2]EC,@.p,R#include <errno.h>
UGE5?a&rqE#define shm_key (key_t)0x8000
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typedef struct share_memory{
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int index;
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subproc1.c
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#include "proc.h"
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#include <stdio.h>
9j x,jk\ v E.O#include <sys/shm.h>
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#include <sys/types.h>
+dk)z'B8z,dwww.linuxeden.com#include <unistd.h>
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#include <string.h>
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y;NA [X!yl8]2fZYint main(int argc,char *argv[])
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{
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int shmid = 0;
2s#FTs xwww.linuxeden.com SHARE_MEMORY *mshare_memory;
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[q \,xQ ft4b*e Awww.linuxeden.com shmid = shmget(shm_key,0,0777);
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}
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}#F!hA` ~9Z&g6ALinux伊甸园论坛 mshare_memory = (SHARE_MEMORY*)shmat(shmid,0,0);
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`-Rn(^www.linuxeden.com printf("subproc1 start...\n");
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while(mshare_memory->index <6)
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printf("index= %d\n ",mshare_memory->index );
#e f!z,n kj mshare_memory->index++;
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return 1;
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}
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subproc2.c
5Y4fgA lsJ0U*HaF#include "proc.h"
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#include <stdio.h>
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#include <sys/ipc.h>
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#include <string.h>
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7d P6l\$D7vILint main(int argc,char *argv[])
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{
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int shmid = 0;
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SHARE_MEMORY *mshare_memory;
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v*@5Q8Vp$L L#i q:Y"~ shmid = shmget(shm_key,0,0777);
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YTQi p1s5A,| printf("subproc2 error %d\n",errno);
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4F(p_'K^9OCLinux伊甸园论坛 mshare_memory = (SHARE_MEMORY*)shmat(shmid,0,0);
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while(mshare_memory->index >5 && mshare_memory->index<11)
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wU@"Q*T,Jm!I+~0p printf("index= %d\n ",mshare_memory->index );
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mshare_memory->index++;
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}
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return 1;
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proc.c
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#include "proc.h"
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#include <stdio.h>
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#include <sys/shm.h>
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#include <sys/types.h>
hv _K A;n"t+?B#include <unistd.h>
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#include <string.h>
4V G*z"@Q)mW9w4_*N!I#include <errno.h>
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int main(int argc,char *argv[])
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{
ca9|(S,? pwww.linuxeden.com int shmid = 0;
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|8o(Am y SHARE_MEMORY *msharememory = NULL;
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|n2bBc&Piwww.linuxeden.com struct shmid_ds *shm_ds = NULL;
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shmid = shmget(shm_key,sizeof(SHARE_MEMORY ), 0777 | IPC_CREAT );
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if ( shmid == -1 )
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{
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return 1;
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}
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b pZ/@ f&O G}:c)yMLinux伊甸园论坛 shmret = shmctl( shm_key, IPC_RMID, shm_ds );
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if( shmret == -1 ){
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}
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shmid = shmget( shm_key,sizeof(SHARE_MEMORY ),0777 | IPC_CREAT);
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return 1;
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}
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return 1;
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memset( msharememory,0,sizeof(SHARE_MEMORY));
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printf("index = %d",msharememory->index);
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if(execv("/root/kevin/subproc1",argv ) == -1)
v6t dE xg0hwww.linuxeden.com {
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tW+U4?} if(execv("/root/kevin/subproc2",argv ) == -1)
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{
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}
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while(1)
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{
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}
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shmret = shmctl( shm_key, IPC_RMID, shm_ds );
WPZ V G+@www.linuxeden.com if(shmret = -1){
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return 1;
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}
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printf("main proc end...\n");
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}
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我是在redhat9下运行的，可以出现结果，但结果和预订的不一样，你能帮我看看吗？谢谢啊！
