day09

ex10-03.c

@@ -23,5 +23,5 @@ int main() {
 
 void int_handle(int signum) {
 	printf("SIGINT:%d\n", signum);
-	printf("int_handle called %d times\n", +num);
+	printf("int_handle called %d times\n", +num)
 }

ex10-04.c

@@ -0,0 +1,28 @@
+#include <signal.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <stdio.h>
+
+void int_handle(int);
+
+int num = 0;
+
+int main() {
+        static struct sigaction act;
+        act.sa_handler = int_handle;
+        sigfillset(&(act.sa_mask));
+        sigaction(SIGINT, &act, NULL);
+
+        while(1){
+                printf("I'm sleepy\n");
+                sleep(1);
+                if(num >= 3)
+                        exit(0);
+        }
+}
+
+void int_handle(int signum) {
+        printf("SIGINT:%d\n", signum);
+        printf("int_handle called %d times\n", +num)
+}
+

ex10-05.c

@@ -0,0 +1,22 @@
+#include <unistd.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+int main() {
+	sigset_t set;
+	int count = 3;
+
+	sigemptyset(&set);
+	sigaddset(&set, SIGINT);
+
+	sigprocmask(SIG_BLOCK, &set, NULL);
+
+	while(count) {
+		printf("don't disturb me (%d)\n", count--);
+		sleep(1);
+	}
+
+	sigprocmask(SIG_UNBLOCK, &set, NULL);
+	printf("you did not disturb me!!\n");
+}

ex10-05_1.c

@@ -0,0 +1,23 @@
+#include <unistd.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+int main() {
+        sigset_t set;
+        int count = 5;
+
+        sigemptyset(&set);
+	sigfillset(&set);
+
+        sigprocmask(SIG_BLOCK, &set, NULL);
+
+        while(count) {
+                printf("don't disturb me (%d)\n", count--);
+                sleep(1);
+        }
+	sigemptyset(&set);
+	sigaddset(&set, SIGINT);
+        sigprocmask(SIG_UNBLOCK, &set, NULL);
+        printf("disturb me!!\n");
+}