44 lines
795 B
C
44 lines
795 B
C
// Adapted form IPC Message Queues Slides
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// sender.c
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// usage: ./sender <key> <type> <text>
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/types.h>
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#include <sys/ipc.h>
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#include <sys/shm.h>
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#include <string.h>
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struct text_message
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{
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long mtype;
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char mtext[100];
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};
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main(int argc, char *argv[])
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{
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int msid, v;
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struct text_message mess;
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/* Creating a message queue */
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msid = msgget((key_t) atoi( argv[1] ), IPC_CREAT | 0666 );
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if( msid == -1 )
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{
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printf("Failed to create queue\n");
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exit(1);
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}
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/* Preparing a message */
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mess.mtype = atoi( argv[2] );
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strcpy( mess.mtext, argv[3] );
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/* Write a message into queue */
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v = msgsnd (msid, &mess, strlen( argv[3] ) + 1, 0 );
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if ( v < 0 )
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{
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printf("Message failed to send\n");
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exit(1);
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}
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printf("Message sent\n");
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}
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