The Melon kernel now has support for simple multitasking

1 files changed, 50 insertions, 0 deletions

diff --git a/Source/Kernel/TaskManager/Process.class.h b/Source/Kernel/TaskManager/Process.class.h
new file mode 100644
index 0000000..4ee7fcf
--- /dev/null
+++ b/Source/Kernel/TaskManager/Process.class.h
@@ -0,0 +1,50 @@
+#ifndef DEF_PROCESS_CLASS_H
+#define DEF_PROCESS_CLASS_H
+
+#include <Library/String.class.h>
+#include <Library/Vector.class.h>
+#include <MemoryManager/PageDirectory.class.h>
+
+#define P_ZOMBIE 0
+#define P_RUNNING 1
+#define P_FINISHED 2
+
+#define E_PAGEFAULT 0x0FFFFF00
+#define E_ABORTED 0x0FFFFF01
+#define E_EXCEPTION 0x0FFFFF02
+
+#define STACKSIZE 4096	//Can change
+
+class Thread;
+
+class Process {
+	friend class Thread;
+
+	private:
+	Process(); //Creates an empty process, used by creatKernel()
+
+	u32int m_pid;
+	String m_cmdline;
+	s32int m_retval;	//Can be either a standard return value or an E_* (see #defines above)
+	u8int m_state; 	//Is one of P_* defined above
+	PageDirectory* m_pagedir;
+	u32int m_uid;	//User ID
+	u32int m_stacksstart;
+
+	Vector<Thread*> m_threads;
+	
+	public:
+	static Process* createKernel(String cmdline);	//Also creates a Thread for what's curently happening
+	Process(String cmdline, u32int uid);
+	~Process();
+
+	u32int stackAlloc();	//Allocates pages for STACKSIZE bytes at end of app memory (just before 0xC0000000)
+	void exit();	//Exits properly process by killing all threads
+	void registerThread(Thread* t);	//Called when a thread starts
+	void threadFinishes(Thread* thread, u32int retval); //Called when a thread finishes
+
+	PageDirectory* getPagedir();
+
+};
+
+#endif