1 files changed, 47 insertions, 13 deletions

diff --git a/sync/sync.c b/sync/sync.c
index e1fbc4c..66574a1 100644
--- a/sync/sync.c
+++ b/sync/sync.c
@@ -1,16 +1,23 @@
-#include <sys/types.h>
+#include <stdio.h>
+#include <stdlib.h>
 #include <sys/ipc.h>
 #include <sys/shm.h>
-#include <stdlib.h>
+#include <sys/types.h>
+#include <sys/wait.h>
 #include <unistd.h>
-#include <stdio.h>
+
+void quit(signum)
+int signum;
+{
+	shmctl(shmid, IPC_RMID, NULL);
+}
 
 
 int main(argc, argv)
 int argc;
 char **argv;
 {
-	int shmid, i, pid, n_read, n_write;
+	int shmid, i, pid, n_read, n_write, w;
 	char *mem, **arg_r, **arg_w;
 
 	if (argc < 2) {
@@ -29,33 +36,60 @@ char **argv;
 		perror("shmat");
 		exit(1);
 	}
+	signal(SIGQUIT, quit);
 
+printf("\nSHMID: %d\nsetting initial memory values...\n", shmid);
 	for (i = 0; i < 1<<14; i++) {
 		*(mem + i) = 0x30;
 	}
 
-	arg_r = malloc(sizeof(char*) * 2);
-	arg_w = malloc(sizeof(char*) * 2);
+	arg_r = malloc(sizeof(char*) * 3);
+	arg_w = malloc(sizeof(char*) * 3);
+	*arg_r = malloc(sizeof(char) * 10);
+	*arg_w = malloc(sizeof(char) * 10);
+
+	*(arg_r + 1) = malloc(sizeof(char) * 50);
+	*(arg_w + 1) = malloc(sizeof(char) * 50);
 
-	*(arg_r + 1) = NULL;
-	*(arg_w + 1) = NULL;
+	*arg_r = "reader";
+	*arg_w = "writer";
 
+	*(arg_r + 2) = NULL;
+	*(arg_w + 2) = NULL;
+
+printf("forking readers...\n");
 	for (i = 0; i < n_read; i++){
-		sprintf(*arg_r, "%d", i);
+printf("sprintf...\n");
+		sprintf(*(arg_r + 1), "%d", i);
+printf("\t%d\n",i);
 		if (pid = fork()) {
-			printf("starting reader %d...\n", i);
+			/* printf("starting reader %d...\n", i); */
 		} else {
-			execvp("./reader", arg_r);
+			int ret = execv("./reader", arg_r);
+			printf("exec retern %d", ret);
 		}
 	}
 
+printf("forking writers...\n");
 	for (i = 0; i < n_write; i++) {
-		sprintf(*arg_w, "%d", i);
+		sprintf(*(arg_w + 1), "%d", i);
+printf("\t%d\n", i);
 		if (pid = fork()) {
-			printf("starting writer %d...\n", i);
+			/* printf("starting writer %d...\n", i); */
 		} else {
 			execvp("./writer", arg_w);
 		}
 		
 	}
+
+	shmdt(mem);
+printf("sync done...\n");
+/* TODO
+ * why is this returning 8
+ */
+	for (i = 0; i < (n_write + n_read); i++) {
+		wait(&w);
+		printf("\nReturned with code:%d\n", WTERMSIG(w));
+	}
+	quit();
 }