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#ifndef DEF_PROCESS_CLASS_H
#define DEF_PROCESS_CLASS_H
#include <String.class.h>
#include <Vector.class.h>
#include <SimpleList.class.h>
#include <MemoryManager/PageDirectory.class.h>
#include <Heap.class.h>
#include <VTManager/VirtualTerminal.proto.h>
#include <VFS/File.class.h>
#include <SyscallManager/Ressource.class.h>
#define P_ZOMBIE 0
#define P_RUNNING 1
#define P_STARTING 2
#define P_FINISHED 3
#define E_PAGEFAULT 0x0FFFFF00
#define E_EXIT 0x0FFFFF01
#define E_UNHANDLED_EXCEPTION 0x0FFFFF02
#define STACKSIZE 4096 //Could change
#define USERHEAPINITSIZE 0x00010000 //Heap initially is 64k, but can grow
#define USERHEAPSTART 0xB7000000 //Heap is at 0xB7000000, 128Mo before kernel space.
class Thread;
class File;
class Process : public Ressource {
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
VirtualTerminal *m_inVT, *m_outVT;
Heap *m_userHeap;
Vector<Thread*> m_threads;
SimpleList<File*> *m_fileDescriptors;
//System calls
static call_t m_callTable[];
u32int exitSC();
u32int allocPageSC(u32int);
public:
static u32int scall(u8int, u32int, u32int, u32int, u32int);
static Process* createKernel(String cmdline, VirtualTerminal *vt); //Also creates a Thread for what's curently happening
static Process* run(String filename, FSNode* cwd, u32int uid);
Process(String cmdline, u32int uid);
~Process();
Heap& heap() { return *m_userHeap; }
void start(); //Starts thread execution - sets m_state to P_RUNNING if == P_STARTING
void exit(); //Exits properly process by killing all threads and deleting file descriptors
void registerThread(Thread* t); //Called when a thread starts
void threadFinishes(Thread* thread, u32int retval); //Called when a thread finishes
void registerFileDescriptor(File* fd);
void unregisterFileDescriptor(File* fd);
PageDirectory* getPagedir();
VirtualTerminal* getInVT();
VirtualTerminal* getOutVT();
void setInVT(VirtualTerminal* vt);
void setOutVT(VirtualTerminal* vt);
u32int getState() { return m_state; }
u32int freePageSC(u32int);
};
#endif
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