From 05a6f2fcf4556ba9f3d0384c07554c387f6efba2 Mon Sep 17 00:00:00 2001
From: Andreas Baumann <mail@andreasbaumann.cc>
Date: Tue, 4 Jul 2017 22:23:37 +0200
Subject: got scheduling of task A and B working (now graphics output and
 termination is broken)

---
 src/kernel/kernel.c | 31 ++++++++++++++++++++++++++++++-
 src/kernel/tasks.c  |  2 +-
 src/kernel/tasks.h  |  2 +-
 3 files changed, 32 insertions(+), 3 deletions(-)

(limited to 'src/kernel')

diff --git a/src/kernel/kernel.c b/src/kernel/kernel.c
index 9a9f32e..b9beeb1 100644
--- a/src/kernel/kernel.c
+++ b/src/kernel/kernel.c
@@ -26,6 +26,8 @@
 #include "text_widget.h"
 #include "window.h"
 
+#include "tasks.h"
+
 static jmp_buf panic_jmp_buf;
 
 static void handle_keyboard_event( keyboard_event_t *event, void *context );
@@ -53,6 +55,9 @@ typedef struct {
 
 static global_context_t global_context;
 
+static void funcA( );
+static void funcB( );
+	
 // must be first entry in kernel.bin (0x8800) as stage 2 of
 // the boot loader expects the entry point to be here!
 void kernel_main( void )
@@ -83,9 +88,19 @@ void kernel_main( void )
 		goto TERMINATE;
 	}
 
+	// TODO: two demo tasks for now, later we should do something useful in a task
+	task_manager_t task_manager;
+	task_manager_init( &task_manager );
+	task_t taskA;
+	task_init( &taskA, GDT_CODE_SEGMENT_SELECTOR, &funcA );
+	task_manager_add_task( &task_manager, &taskA );
+	task_t taskB;
+	task_init( &taskB, GDT_CODE_SEGMENT_SELECTOR, &funcB );
+	task_manager_add_task( &task_manager, &taskB );
+	
 	puts( "Initializing interrupts" );
 	interrupt_t interrupt;
-	interrupts_init( &interrupt );
+	interrupts_init( &interrupt, GDT_CODE_SEGMENT_SELECTOR, &task_manager );
 
 	puts( "Initializing drivers" );
 	driver_manager_init( &global_context.driver_manager );
@@ -362,3 +377,17 @@ static void handle_mouse_event( mouse_event_t *event, void *context )
 			break;
 	}
 }
+
+static void funcA( )
+{
+	while( true ) {
+		printf( "A" );
+	}
+}
+
+static void funcB( )
+{
+	while( true ) {
+		printf( "B" );
+	}
+}
diff --git a/src/kernel/tasks.c b/src/kernel/tasks.c
index 164409a..4dd7f38 100644
--- a/src/kernel/tasks.c
+++ b/src/kernel/tasks.c
@@ -3,7 +3,7 @@
 #include "kernel.h"
 #include "string.h"
 
-void task_init( task_t *task, uint16_t gdt_code_segment_selector, task_func_t *entrypoint )
+void task_init( task_t *task, uint16_t gdt_code_segment_selector, task_func_t entrypoint )
 {
 	memset( task, 0, sizeof( task_t ) );
 	
diff --git a/src/kernel/tasks.h b/src/kernel/tasks.h
index 604c463..523631b 100644
--- a/src/kernel/tasks.h
+++ b/src/kernel/tasks.h
@@ -47,7 +47,7 @@ typedef struct {
 
 typedef void (*task_func_t)( void );
 
-void task_init( task_t *task, uint16_t gdt_code_segment_selector, task_func_t *entrypoint );
+void task_init( task_t *task, uint16_t gdt_code_segment_selector, task_func_t entrypoint );
 
 #define MAX_NOF_TASKS 256
 
-- 
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