03a done

diff --git a/mart/ex03/Makefile b/mart/ex03/Makefile
new file mode 100644 (file)
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 (file)
--- 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 (file)
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 (file)
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 (file)
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.