Message Queue

Message Queue/sender.c

@@ -0,0 +1,42 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/stat.h>
+#include <mqueue.h>
+#include <errno.h>
+
+#define MAX_MSG_SIZE        256
+#define MSG_BUFFER_SIZE     (MAX_MSG_SIZE + 10)
+
+
+int
+main(int argc, char** argv) {
+
+    char buffer[MSG_BUFFER_SIZE];
+    int recvr_msgq_fd = 0;
+
+    if (argc <= 1) {
+        printf("provide a reciepient msgQ name : format </msgq-name>\n");
+        return 0;
+    }
+
+    memset(buffer, 0, MSG_BUFFER_SIZE);
+    printf("Enter msg to be sent to reciever %s\n", argv[1]);
+    scanf("%s", buffer);
+
+    if ((recvr_msgq_fd = mq_open(argv[1], O_WRONLY | O_CREAT, 0, 0)) == -1) {
+        printf("Client: mq_open failed, errno = %d", errno);
+        exit(1);
+    }
+
+    if (mq_send(recvr_msgq_fd, buffer, strlen(buffer) + 1, 0) == -1) {
+        perror("Client: Not able to send message to server");
+        exit(1);
+    }
+
+    mq_close(recvr_msgq_fd);
+    return 0;
+}