From: root <root@xenomailinux.localdomain>
Date: Thu, 17 Sep 2015 12:50:15 +0000 (+0200)
Subject: 03a done
X-Git-Url: https://git.martlubbers.net/?a=commitdiff_plain;h=6ef9df24af633025d2a8501f9ea50deedb95e1c9;p=des2015.git

03a done
---

diff --git a/mart/ex03/Makefile b/mart/ex03/Makefile
new file mode 100644
index 0000000..bbbff1d
--- /dev/null
+++ b/mart/ex03/Makefile
@@ -0,0 +1,9 @@
+CFLAGS=$(shell xeno-config --xeno-cflags) -lnative -lrtdk
+LDFLAGS=$(shell xeno-config --xeno-ldflags)
+
+BINARIES=$(addprefix ex03,a b c)
+
+all: $(BINARIES)
+
+clean:
+	$(RM) -v $(BINARIES) *.o
diff --git a/mart/ex03/ex03a.c b/mart/ex03/ex03a.c
index 195a64f..7d6b061 100644
--- a/mart/ex03/ex03a.c
+++ b/mart/ex03/ex03a.c
@@ -18,39 +18,37 @@ int global = 0;
 
 void taskOne(void *arg)
 {
-    int i;
-    for (i=0; i < ITER; i++)
-    {
-        rt_printf("I am taskOne and global = %d................\n", ++global);
-    }
+	int i;
+	for (i=0; i < ITER; i++)
+	{
+		rt_printf("I am taskOne and global = %d................\n", ++global);
+	}
 }
 
 void taskTwo(void *arg)
 {
-    int i;
-    for (i=0; i < ITER; i++)
-    {
-        rt_printf("I am taskTwo and global = %d----------------\n", --global);
-    }
+	int i;
+	for (i=0; i < ITER; i++)
+	{
+		rt_printf("I am taskTwo and global = %d----------------\n", --global);
+	}
 }
 
 int main(int argc, char* argv[])
 {
-    /* Perform auto-init of rt_print buffers if the task doesn't do so */
-    rt_print_auto_init(1);
+	/* Perform auto-init of rt_print buffers if the task doesn't do so */
+	rt_print_auto_init(1);
 
-    /* Avoids memory swapping for this program */
-    mlockall(MCL_CURRENT|MCL_FUTURE);
+	/* Avoids memory swapping for this program */
+	mlockall(MCL_CURRENT|MCL_FUTURE);
 
-    /* create the two tasks */
-    rt_task_create(&t1, "task1", 0, 1, 0);
-    rt_task_create(&t2, "task2", 0, 1, 0);
+	/* create the two tasks */
+	rt_task_create(&t1, "task1", 0, 1, 0);
+	rt_task_create(&t2, "task2", 0, 1, 0);
 
-    /* start the two tasks */
-    rt_task_start(&t1, &taskOne, 0);
-    rt_task_start(&t2, &taskTwo, 0);
+	/* start the two tasks */
+	rt_task_start(&t1, &taskOne, 0);
+	rt_task_start(&t2, &taskTwo, 0);
 
-    return 0;
+	return 0;
 }
-
-
diff --git a/mart/ex03/ex03b.c b/mart/ex03/ex03b.c
new file mode 100644
index 0000000..9c6f544
--- /dev/null
+++ b/mart/ex03/ex03b.c
@@ -0,0 +1,64 @@
+#include <stdio.h>
+#include <signal.h>
+#include <unistd.h>
+#include <sys/mman.h>
+
+#include <native/task.h>
+#include <native/timer.h>
+#include <native/sem.h>
+
+#include  <rtdk.h>
+
+#define ITER 10
+
+static RT_TASK  t1;
+static RT_TASK  t2;
+RT_SEM sem;
+
+int global = 0;
+
+void taskOne(void *arg)
+{
+	int i;
+	for (i=0; i < ITER; i++)
+	{
+		rt_sem_p(&sem, TM_INFINITE);
+		rt_printf("I am taskOne and global = %d................\n", ++global);
+		rt_sem_v(&sem);
+	}
+}
+
+void taskTwo(void *arg)
+{
+	int i;
+	for (i=0; i < ITER; i++)
+	{
+		rt_sem_p(&sem, TM_INFINITE);
+		rt_printf("I am taskTwo and global = %d----------------\n", --global);
+		rt_sem_v(&sem);
+	}
+}
+
+int main(int argc, char* argv[])
+{
+	/* Perform auto-init of rt_print buffers if the task doesn't do so */
+	rt_print_auto_init(1);
+
+	/* Avoids memory swapping for this program */
+	mlockall(MCL_CURRENT|MCL_FUTURE);
+
+	/* create the two tasks */
+	rt_task_create(&t1, "task1", 0, 1, 0);
+	rt_task_create(&t2, "task2", 0, 1, 0);
+
+	/* create semaphore and start in blocked mode */
+	rt_sem_create(&sem, "sem", 0, S_FIFO);
+
+	/* start the two tasks */
+	rt_task_start(&t1, &taskOne, 0);
+	rt_task_start(&t2, &taskTwo, 0);
+
+	/* release the semaphore */
+	rt_sem_v(&sem);
+	return 0;
+}
diff --git a/mart/ex03/ex03c.c b/mart/ex03/ex03c.c
new file mode 100644
index 0000000..195a64f
--- /dev/null
+++ b/mart/ex03/ex03c.c
@@ -0,0 +1,56 @@
+#include <stdio.h>
+#include <signal.h>
+#include <unistd.h>
+#include <sys/mman.h>
+
+#include <native/task.h>
+#include <native/timer.h>
+#include <native/sem.h>
+
+#include  <rtdk.h>
+
+#define ITER 10
+
+static RT_TASK  t1;
+static RT_TASK  t2;
+
+int global = 0;
+
+void taskOne(void *arg)
+{
+    int i;
+    for (i=0; i < ITER; i++)
+    {
+        rt_printf("I am taskOne and global = %d................\n", ++global);
+    }
+}
+
+void taskTwo(void *arg)
+{
+    int i;
+    for (i=0; i < ITER; i++)
+    {
+        rt_printf("I am taskTwo and global = %d----------------\n", --global);
+    }
+}
+
+int main(int argc, char* argv[])
+{
+    /* Perform auto-init of rt_print buffers if the task doesn't do so */
+    rt_print_auto_init(1);
+
+    /* Avoids memory swapping for this program */
+    mlockall(MCL_CURRENT|MCL_FUTURE);
+
+    /* create the two tasks */
+    rt_task_create(&t1, "task1", 0, 1, 0);
+    rt_task_create(&t2, "task2", 0, 1, 0);
+
+    /* start the two tasks */
+    rt_task_start(&t1, &taskOne, 0);
+    rt_task_start(&t2, &taskTwo, 0);
+
+    return 0;
+}
+
+
diff --git a/mart/ex03/explanations.txt b/mart/ex03/explanations.txt
new file mode 100644
index 0000000..f53474f
--- /dev/null
+++ b/mart/ex03/explanations.txt
@@ -0,0 +1,6 @@
+3a.
+Since the first task is started first the main loop halts until it's finished.
+
+3b.
+
+3c.