base

gms/LG/new_sh_statusd/test/test_fork.c

@@ -0,0 +1,111 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <pthread.h>
+
+void *func1(void *data)
+{
+	int i;
+	char *string;
+
+	string = (char *)data;
+
+	for (i = 0; i < 10; i++)
+	{
+		fprintf(stderr, "[%d] --> %s\n", i, string);
+	}
+}
+
+void *func2(void *data)
+{
+	int i;
+	char *string;
+
+	string = (char *)data;
+	for (i = 0; i < 10; i++)
+	{
+		fprintf(stderr, "--[%d] --> %s\n", i, string);
+	}
+}
+
+int main()
+{
+	int pid, pid2;
+	int status1 = 0;
+	int status2 = 0;
+	int pstatus1;
+	int pstatus2;
+	int c1 = 0;
+	int pth_id;
+	int retval = -1;
+	char *str1 = "RyuHyunSoo";
+	char *str2 = "RooluAndJin";
+
+	pthread_t pthr_t[2];
+	
+	if ( (pid = fork()) < 0 )
+	{
+		fprintf(stderr, "Cannot Fork(1)!!\n");
+	}
+	else if ( pid == 0 )
+	{
+		fprintf(stderr, "Start Child(one) Process!!\n");
+//		scanf("%d", &c1);
+//		fprintf(stderr, "Child(one) Result is : %d\n", c1);
+		
+		if (pthread_create(&pthr_t[0], NULL, func1, (void *)str1))
+		{
+			perror("thread of Child(one) create error:");
+			exit(0);
+		}
+		else
+			fprintf(stderr, "Success!! pth_id1 = %d\n", pthr_t[0]);
+	}
+	else
+	{
+		fprintf(stderr, "Mother's job with Child(one)\n");
+
+		if ( (pid2=fork()) == 0 )
+		{
+			fprintf(stderr, "Start Child(two) Process!!\n");
+//			scanf("%d", &c1);
+//	        fprintf(stderr, "Child(two) Result is : %x\n", c1);
+			
+			if (pthread_create(&pthr_t[1], NULL, func2, (void *)str2))
+			{
+				perror("thread of Child(two) create error:");
+				exit(0);
+			}
+			else
+				fprintf(stderr, "Success!! pth_id2 = %d\n", pthr_t[1]);
+		}
+		else
+		{
+			fprintf(stderr, "Mothers' job with Child(two) !!\n");
+			wait(&status1);
+		}
+		wait(&status2);
+	}
+
+	/* Ending .... */
+	if (pid == 0 || pid2 == 0)
+	{
+		fprintf(stderr, "End Child Process!!..(pid=%d)\n", pid);
+
+		if (pid == 0)
+		{
+			retval = pthread_join(pthr_t[0], (void **)&pstatus1);
+			fprintf(stderr, "Thread of Child(one) End %d(%d)\n", (pthread_t)pthr_t[0], retval);
+		}
+		else if (pid2 == 0)
+		{
+			retval = pthread_join(pthr_t[1], (void **)&pstatus2);
+            fprintf(stderr, "Thread of Child(two) End %d(%d)\n", (pthread_t)pthr_t[1], retval);
+		}
+	}
+	else
+	{
+		fprintf(stderr, "End Mother Process!!..(pid=%d)\n", pid);
+	}
+	exit(0);
+}