From 082a48fe6e316df7766507d1e04f721fb10b07c1 Mon Sep 17 00:00:00 2001
From: KimNayoung <skdud1201@ajou.ac.kr>
Date: Wed, 26 Jan 2022 16:00:21 +0900
Subject: [PATCH] lec14
---
lec12/Makefile.2 | 8 ++++++++
lec13/forktest.c | 17 ++++++++++++++++
lec13/lserr.txt | 1 +
lec13/lsout.txt | 1 +
lec13/lsoutierr.txt | 2 ++
lec13/output.txt | 1 +
lec13/test.c | 7 +++++++
lec13/th3.c | 29 +++++++++++++++++++++++++++
lec13/thread2.c | 37 ++++++++++++++++++++++++++++++++++
lec13/threadtest.c | 42 +++++++++++++++++++++++++++++++++++++++
lec14/prtest.c | 12 ++++++++++++
lec14/th4.c | 34 ++++++++++++++++++++++++++++++++
lec14/threadtest.c | 48 +++++++++++++++++++++++++++++++++++++++++++++
13 files changed, 239 insertions(+)
create mode 100644 lec12/Makefile.2
create mode 100644 lec13/forktest.c
create mode 100644 lec13/lserr.txt
create mode 100644 lec13/lsout.txt
create mode 100644 lec13/lsoutierr.txt
create mode 100644 lec13/output.txt
create mode 100644 lec13/test.c
create mode 100644 lec13/th3.c
create mode 100644 lec13/thread2.c
create mode 100644 lec13/threadtest.c
create mode 100644 lec14/prtest.c
create mode 100644 lec14/th4.c
create mode 100644 lec14/threadtest.c
diff --git a/lec12/Makefile.2 b/lec12/Makefile.2
new file mode 100644
index 0000000..9dbc9c0
--- /dev/null
+++ b/lec12/Makefile.2
@@ -0,0 +1,8 @@
+main: main.o fx_s15_16.o
+ cc main.o fx_s15_16.o -o main
+main.o: main.c fx_head.h fx_s15_16.h
+ cc -c main.c
+fx_s15_16.o: fx_head.h fx_s15_16.c
+ cc -c fx_s15_16.c
+clean:
+ rm main *.o *.out
diff --git a/lec13/forktest.c b/lec13/forktest.c
new file mode 100644
index 0000000..9223066
--- /dev/null
+++ b/lec13/forktest.c
@@ -0,0 +1,17 @@
+#include <stdio.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+int main()
+{
+ int a = 0;
+ pid_t pid ,pid2;
+ pid = fork();
+ pid2 = fork();
+ for (int i = 0; i < 100; i++)
+ {
+ sleep(1);
+ if (pid == 0)
+ printf("PID %d : PID2 %d : A=%d : i=%d : \n", pid, pid2, a++, i);
+ }
+}
diff --git a/lec13/lserr.txt b/lec13/lserr.txt
new file mode 100644
index 0000000..06488f2
--- /dev/null
+++ b/lec13/lserr.txt
@@ -0,0 +1 @@
+ls: cannot access 'zzz': No such file or directory
diff --git a/lec13/lsout.txt b/lec13/lsout.txt
new file mode 100644
index 0000000..f386eaf
--- /dev/null
+++ b/lec13/lsout.txt
@@ -0,0 +1 @@
+-rw-r--r-- 1 pcc004 pcc 127 1월 25 15:22 test.c
diff --git a/lec13/lsoutierr.txt b/lec13/lsoutierr.txt
new file mode 100644
index 0000000..ec19ad5
--- /dev/null
+++ b/lec13/lsoutierr.txt
@@ -0,0 +1,2 @@
+ls: cannot access 'zzz': No such file or directory
+-rw-r--r-- 1 pcc004 pcc 127 1월 25 15:22 test.c
diff --git a/lec13/output.txt b/lec13/output.txt
new file mode 100644
index 0000000..ce01362
--- /dev/null
+++ b/lec13/output.txt
@@ -0,0 +1 @@
+hello
diff --git a/lec13/test.c b/lec13/test.c
new file mode 100644
index 0000000..f0c7b0e
--- /dev/null
+++ b/lec13/test.c
@@ -0,0 +1,7 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+int main(){
+ printf("System Call: %d\n", system("ls -li test.c zzz"));
+ return(100);
+}
diff --git a/lec13/th3.c b/lec13/th3.c
new file mode 100644
index 0000000..c47f256
--- /dev/null
+++ b/lec13/th3.c
@@ -0,0 +1,29 @@
+#include <stdio.h>
+#include <sys/types.h>
+#include <unistd.h>
+int bbb = 0;
+void fn_s()
+{
+ char bufff[10];
+ static int a = 0;
+ setvbuf(stdout, bufff, _IOFBF, 10);
+ printf("== %d %d ==",a++, bbb++);
+}
+
+void *run (void *arg)
+{
+ printf("Hello world of POSIX threads.%d\n", (int) (0) );
+ for (int i = 0; i < 10; i++)
+ {
+ sleep(1);
+ fn_s();
+ }
+ return 0;
+}
+
+int main()
+{
+ int result1;
+ run((void *) 0);
+ printf("Thread return %d at the end\n", result1);
+}
diff --git a/lec13/thread2.c b/lec13/thread2.c
new file mode 100644
index 0000000..d9761b6
--- /dev/null
+++ b/lec13/thread2.c
@@ -0,0 +1,37 @@
+#include <pthread.h>
+#include <stdio.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+
+int bbb = 0;
+
+void fn_s()
+{
+ static int a = 0;
+ printf("== %d %d ==",a++, bbb++);
+}
+
+
+void *run (void *arg)
+{
+ printf("Hello world of POSXI threads.%d\n", (int) pthread_self() );
+ for (int i = 0; i < 100; i++)
+ {
+ usleep(100);
+ fn_s();
+ }
+ return 0;
+
+}
+
+int main()
+{
+ pthread_t thread1;
+ int result1;
+ pthread_create(&thread1, NULL, run, NULL );
+ run((void *) 0);
+ pthread_join(thread1, (void **) &result1);
+ printf("Thread return %d at the end\n", result1);
+}
+
diff --git a/lec13/threadtest.c b/lec13/threadtest.c
new file mode 100644
index 0000000..3e8026c
--- /dev/null
+++ b/lec13/threadtest.c
@@ -0,0 +1,42 @@
+#include <pthread.h>
+#include <stdio.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+int bbb = 0;
+
+void fn_s()
+{
+ static int a = 0;
+ printf("== %d %d ==",a++, bbb++);
+}
+
+
+void *run (void *arg)
+{
+ printf("Hello world of POSXI threads.%d\n", (int) pthread_self() );
+ for (int i = 0; i < 100; i++)
+ {
+ sleep(1);
+ fn_s();
+ }
+ return 0;
+
+}
+
+int main()
+{
+ pthread_t thread1;
+ // pthread_t thread2;
+ // pthread_t thread3;
+ int result1;
+ // int result2;
+ pthread_create(&thread1, NULL, run, NULL );
+ // pthread_create(&thread2, NULL, run, NULL );
+ // pthread_create(&thread3, NULL, run, NULL );
+ pthread_join(thread1, &result1);
+ // pthread_join(thread2, &result2);
+ printf("Thread return %d at the end\n", result1);
+ // printf("Thread return %d at the end\n", result2);
+}
+
diff --git a/lec14/prtest.c b/lec14/prtest.c
new file mode 100644
index 0000000..9188cf9
--- /dev/null
+++ b/lec14/prtest.c
@@ -0,0 +1,12 @@
+#include <stdio.h>
+
+int main()
+{
+ char a;
+ short b;
+ int c;
+ long long d;
+
+ scanf("%d %d %d %d", &a, &b, &c, &d);
+ printf("%d %d %d %d\n", a, b, c, d);
+}
diff --git a/lec14/th4.c b/lec14/th4.c
new file mode 100644
index 0000000..6f3fa9c
--- /dev/null
+++ b/lec14/th4.c
@@ -0,0 +1,34 @@
+#include <stdio.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+int bbb = 0;
+
+void fn_s()
+{
+ static int a = 0;
+ printf("== %d %d ==",a++, bbb++);
+ fflush(stdout);
+}
+
+
+void *run (void *arg)
+{
+ printf("Hello world of POSIX threads.%d\n", (int) (0) );
+ for (int i = 0; i < 10; i++)
+ {
+ sleep(1);
+ fn_s();
+ }
+ return 0;
+
+}
+
+int main()
+{
+ int result1;
+ char bufff[10];
+ setvbuf(stdout,bufff, _IONBF, 10);
+ run((void *) 0);
+ printf("Thread return %d at the end\n", result1);
+}
diff --git a/lec14/threadtest.c b/lec14/threadtest.c
new file mode 100644
index 0000000..4308c85
--- /dev/null
+++ b/lec14/threadtest.c
@@ -0,0 +1,48 @@
+#include <stdio.h>
+#include <sys/types.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <pthread.h>
+
+int bbb = 0;
+
+void fn_s()
+{
+ static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
+ static int a = 0;
+ printf("<= %d %d =>",a, bbb);
+ pthread_mutex_lock(&mutex);
+ a++; bbb++;
+ pthread_mutex_unlock(&mutex);
+}
+
+
+void *run (void *arg)
+{
+ printf("Hello world of POSXI threads.%d\n", (int) pthread_self() );
+ for (int i = 0; i < 1000000; i++)
+ {
+ //usleep(10000);
+ fn_s();
+ }
+ return 0;
+
+}
+
+int main()
+{
+ pthread_t thread1;
+ pthread_t thread2;
+ pthread_t thread3;
+ int result1, result2, result3;
+
+ pthread_create(&thread1, NULL, run, NULL );
+ pthread_create(&thread2, NULL, run, NULL );
+ pthread_create(&thread3, NULL, run, NULL );
+ run((void *) 0);
+ pthread_join(thread1, (void **) &result1);
+ pthread_join(thread2, (void **) &result2);
+ pthread_join(thread3, (void **) &result3);
+ printf("\nThread return %d at the end\n", result1);
+}
+
--
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