101 lines
1.7 KiB
C
101 lines
1.7 KiB
C
#pragma once
|
|
|
|
#include "arch/MMU.h"
|
|
#include "fs/VFS.h"
|
|
#include "memory/UserVM.h"
|
|
#include <luna/LinkedList.h>
|
|
#include <luna/OwnedPtr.h>
|
|
#include <luna/Result.h>
|
|
#include <luna/Stack.h>
|
|
|
|
#ifdef ARCH_X86_64
|
|
#include "arch/x86_64/CPU.h"
|
|
#else
|
|
#error "Unknown architecture."
|
|
#endif
|
|
|
|
enum class ThreadState
|
|
{
|
|
Idle,
|
|
Runnable,
|
|
Sleeping,
|
|
Exited,
|
|
Dying
|
|
};
|
|
|
|
struct FileDescriptor
|
|
{
|
|
SharedPtr<VFS::Inode> inode;
|
|
usize offset { 0 };
|
|
int flags { 0 };
|
|
|
|
bool should_append();
|
|
bool should_block();
|
|
bool is_writable();
|
|
bool is_readable();
|
|
};
|
|
|
|
static constexpr int FD_MAX = 64;
|
|
|
|
struct Thread : public LinkedListNode<Thread>
|
|
{
|
|
Registers regs;
|
|
|
|
u64 id;
|
|
u64 parent_id;
|
|
|
|
u64 ticks = 0;
|
|
u64 ticks_in_user = 0;
|
|
u64 ticks_in_kernel = 0;
|
|
|
|
u64 ticks_left;
|
|
u64 sleep_ticks_left;
|
|
|
|
Stack stack;
|
|
Stack kernel_stack;
|
|
|
|
OwnedPtr<UserVM> vm_allocator;
|
|
Option<FileDescriptor> fd_table[FD_MAX] = {};
|
|
|
|
Result<int> allocate_fd(int min);
|
|
Result<FileDescriptor*> resolve_fd(int fd);
|
|
|
|
FPData fp_data;
|
|
|
|
ThreadState state = ThreadState::Runnable;
|
|
|
|
bool is_kernel { true };
|
|
|
|
u8 status { 0 };
|
|
|
|
PageDirectory* directory;
|
|
|
|
bool is_idle()
|
|
{
|
|
return state == ThreadState::Idle;
|
|
}
|
|
|
|
void init_regs_kernel();
|
|
void init_regs_user();
|
|
|
|
void set_arguments(u64 arg1, u64 arg2, u64 arg3, u64 arg4);
|
|
|
|
void set_ip(u64 ip);
|
|
u64 ip();
|
|
|
|
void set_sp(u64 sp);
|
|
u64 sp();
|
|
|
|
void set_return(u64 ret);
|
|
|
|
static void init();
|
|
};
|
|
|
|
void switch_context(Thread* old_thread, Thread* new_thread, Registers* regs);
|
|
|
|
bool is_in_kernel(Registers* regs);
|
|
|
|
Result<Thread*> new_thread();
|
|
|
|
extern LinkedList<Thread> g_threads;
|