Adds a status bar.

Makefile

@@ -64,8 +64,8 @@ obj/stdlib.o: src/stdlib.c include/stdlib.h include/varargs.h \
 	$(CC)  $(FLAGS) $(CCFLAGS) -o $@ -c src/stdlib.c
 
 # src/timer.c
-obj/timer.o: src/timer.c include/timer.h include/interrupts.h \
- include/cpustate.h
+obj/timer.o: src/timer.c include/timer.h include/kernel.h \
+ include/interrupts.h include/cpustate.h
 	$(CC)  $(FLAGS) $(CCFLAGS) -o $@ -c src/timer.c
 
 # src/vmm.c

include/console.h

@@ -5,7 +5,7 @@ extern "C"  {
 #endif
 
 #define CONSOLE_WIDTH 80
-#define CONSOLE_HEIGHT 25
+#define CONSOLE_HEIGHT 24
 
 #define COLOR_BLACK 0x0
 #define COLOR_BLUE 0x1
@@ -23,6 +23,12 @@ extern "C"  {
 #define COLOR_YELLOW 0xE
 #define COLOR_WHITE 0xF
 
+/**
+ * @brief Sets the console status bar
+ * @param text
+ */
+void console_setstate(const char *text);
+
 /**
  * @brief Sets the cursor position.
  * @param x Distance of the cursor from the left border.

include/timer.h

@@ -25,6 +25,13 @@ time_t __cdecl timer_get();
  */
 void __cdecl timer_set(time_t time);
 
+/**
+ * @brief Adds a callback to the timer.
+ * @param interval The period time when the callback is called.
+ * @param callback The callback that is called.
+ */
+void __cdecl timer_add_callback(time_t interval, void (*callback)(time_t));
+
 /**
  * @brief Waits until a certain time elapsed.
  * @param ticks The number of ticks to wait

scripts/main.ts

@@ -5,7 +5,10 @@ BEGIN
 	0 -> i;
 	# Print numbers from 1 to 5
 	WHILE ((i + 1) -> i) <= 5 DO
+	BEGIN
 		printInt(i);
+		sleep(20);
+	END
 END
 
 PUB fun() -> i : INT

src/console.c

@@ -28,6 +28,21 @@ static ConsoleState state = csDefault;
 
 static ConsoleChar *screen = (ConsoleChar*)0xB8000;
 
+static ConsoleChar *statusbar = (ConsoleChar*)(0xB8000 + 0x02 * CONSOLE_WIDTH * CONSOLE_HEIGHT);
+
+void console_setstate(const char *text)
+{
+    for(size_t i = 0; i < CONSOLE_WIDTH; i++) {
+        statusbar[i].c = ' ';
+        statusbar[i].color = 0x70;
+    }
+    ConsoleChar *ptr = statusbar;
+    while(*text) {
+        (ptr++)->c = *text++;
+    }
+
+}
+
 void ksetpos(int x, int y)
 {
 	if((x >= 0) && (x < CONSOLE_WIDTH))

src/init.c

@@ -18,6 +18,41 @@ void die(const char *msg)
     }
 }
 
+extern size_t mallocCount;
+extern size_t freeCount;
+extern size_t allocatedMemory;
+
+void update_statusbar(time_t t)
+{
+    size_t a, b;
+    static char tmp[64];
+    static char buffer[CONSOLE_WIDTH];
+    memset(buffer, ' ', sizeof(char) * CONSOLE_WIDTH);
+
+    memcpy(&buffer[0], "Malloc: ", 8);
+
+    b = 8;
+    a = strlen(itoa(freeCount, tmp, 10));
+    memcpy(&buffer[8], tmp, a);
+    b += a;
+
+    buffer[b] = '/'; b++;
+
+    a = strlen(itoa(mallocCount, tmp, 10));
+    memcpy(&buffer[b], tmp, a);
+    b += a;
+
+    b += 2;
+
+    a = strlen(itoa(allocatedMemory, tmp, 10));
+    memcpy(&buffer[b], tmp, a);
+    b += a;
+
+    memcpy(&buffer[b], " Byte", 5);
+
+    console_setstate(buffer);
+}
+
 static void debug_test()
 {
 	char buffer[64];
@@ -31,12 +66,13 @@ static void debug_test()
 	kprintf("This %s %c test line.\n", "is", 'a');
 	kprintf("Numbers: %d %i %x %b\n", 15, 15, 15, 15);
 
-	/*
+    ///*
 	kputs("scroll-test:\n");
-	for(int i = 0; i < 100; i++)
+    for(int i = 0; i < 10; i++)
 	{
 		kprintf("They see me scrolling, they hating! %i\n", i);
-	}
+    }
+    /*
 	for(int i = 0; i < 272; i++)
 	{
 		kprintf("x");
@@ -136,7 +172,7 @@ void init(const MultibootStructure *mbHeader)
 	putsuccess();
 
 	kputs("Prepare heap memory:");
-	for(uintptr_t ptr = 0x400000; ptr < 0x800000; ptr += 4096)
+    for(uintptr_t ptr = 0x400000; ptr < 0x800000; ptr += 4096)
 	{
 		vmm_map(ptr, (uintptr_t)pmm_alloc(), VM_PROGRAM);
 	}
@@ -148,11 +184,11 @@ void init(const MultibootStructure *mbHeader)
 
 	kputs("Initialize C++ objects: ");
 	cpp_init();
-	putsuccess();
+    putsuccess();
 
-	double f = 1.0;
+    timer_add_callback(1, update_statusbar);
 
-	int i = (int)f;
+    debug_test();
 
     vm_start();
 
@@ -171,3 +207,8 @@ int main(int argc, char **argv)
 
 void __init_array_start() { }
 void __init_array_end() { }
+
+
+
+
+

src/interrupts.c

@@ -85,7 +85,11 @@ void intr_routine(CpuState *state)
 		if(handler != nullptr) {
 			handler(state);
 		} else {
-			kprintf("\n\x12\x04Exception [%d] %s!\x12\0x7\n", state->intr, name);
+            kprintf("\n\x12\x04 Exception [%d] %s!\x12\0x07  \n", state->intr, name);
+            kprintf(
+                "EIP: %x"
+                "",
+                state->eip);
 			while(1)
 			{
 				__asm__ volatile("cli; hlt");

src/malloc.c

@@ -41,6 +41,9 @@ struct __freelist {
 	struct __freelist *nx;
 };
 
+size_t mallocCount = 0, freeCount = 0;
+size_t allocatedMemory = 0;
+
 size_t __malloc_margin = 32;
 char * const __malloc_heap_start = (char *)0x400000;
 char * const __malloc_heap_end = (char *)0x800000;
@@ -50,6 +53,8 @@ struct __freelist *__flp;
 
 void *malloc(size_t len)
 {
+    allocatedMemory += len;
+    mallocCount++;
 	struct __freelist *fp1, *fp2, *sfp1, *sfp2;
 	char *cp;
 	size_t s, avail;
@@ -168,6 +173,7 @@ void *malloc(size_t len)
 
 void free(void *p)
 {
+    freeCount++;
 	struct __freelist *fp1, *fp2, *fpnew;
 	char *cp1, *cp2, *cpnew;
 

src/timer.c

@@ -1,12 +1,31 @@
+#include <timer.h>
+#include <stdio.h>
+#include <kernel.h>
+#include <interrupts.h>
 
-#include "timer.h"
-#include "interrupts.h"
+#define CALLBACK_COUNT 64
 
 static volatile time_t ticks = 0;
 
+static struct {
+    time_t interval;
+    void (*callback)(time_t);
+} callbacks[CALLBACK_COUNT];
+
 static void timer_irq()
 {
 	ticks++;
+
+    irq_disable();
+    for(size_t i = 0; i < CALLBACK_COUNT; i++) {
+        if(callbacks[i].callback != nullptr) {
+            if((ticks % callbacks[i].interval) == 0) {
+                callbacks[i].callback(ticks);
+            }
+            return;
+        }
+    }
+    irq_enable();
 }
 
 void timer_init()
@@ -25,6 +44,18 @@ void timer_set(time_t time)
 	ticks = time;
 }
 
+void timer_add_callback(time_t interval, void (*callback)(time_t))
+{
+    for(size_t i = 0; i < CALLBACK_COUNT; i++) {
+        if(callbacks[i].callback == nullptr) {
+            callbacks[i].interval = interval;
+            callbacks[i].callback = callback;
+            return;
+        }
+    }
+    die("no timer callbacks left.");
+}
+
 void sleep(time_t t)
 {
 	uint64_t end = timer_get() + t;