[SP/P13] Solved first two exercises

1 files changed, 36 insertions, 0 deletions

diff --git a/Year 3/System programming/Practice13/ex2.c b/Year 3/System programming/Practice13/ex2.c
new file mode 100644
index 0000000..029fcfa
--- /dev/null
+++ b/Year 3/System programming/Practice13/ex2.c
@@ -0,0 +1,36 @@
+#include <fcntl.h>
+#include <sys/stat.h>
+#include <mqueue.h>
+#include <signal.h>
+#include <stdio.h>
+#include <unistd.h>
+
+int main() {
+	struct mq_attr mqattr = {
+		.mq_maxmsg = 1,
+		.mq_msgsize = 1,
+	};
+	mqd_t mq = mq_open("/mq", O_RDWR | O_CREAT, 0755, &mqattr);
+
+	int fpid = fork();
+	if (fpid == 0) {
+		char tmp[1];
+		while (1) {
+			mq_receive(mq, tmp, 1, NULL);
+			printf("child\n");
+		}
+	}
+	else {
+		while (1) {
+			printf("parent\n");
+			mq_send(mq, "", 1, 0);
+			sleep(1);
+		}
+	}
+
+	mq_close(mq);
+	if (fpid != 0)
+		mq_unlink("/mq");
+
+	return 0;
+}