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#pragma once
#include <sys.h>
#include <paging.h>
#include <region.h>
#include <idt.h>
#define T_STATE_RUNNING 1
#define T_STATE_PAUSED 2
#define T_STATE_FINISHED 3
#define KPROC_STACK_SIZE 0x8000 // 8Kb
#define TASK_SWITCH_FREQUENCY 100 // in herz
typedef struct saved_context {
uint32_t *esp;
void (*eip)();
} saved_context_t;
struct process;
typedef struct thread {
saved_context_t ctx;
pagedir_t *current_pd_d;
uint32_t state;
region_info_t *stack_region;
struct process *proc;
isr_handler_t user_ex_handler; // page fault in kernel memory accessed by user code (violation)
struct thread *next_in_queue;
} thread_t;
typedef void (*entry_t)(void*);
void threading_setup(entry_t cont, void* data); // never returns
thread_t *new_thread(entry_t entry, void* data); // thread is PAUSED, and must be resume_thread'ed
extern thread_t *current_thread;
void yield();
void pause();
void exit();
void usleep(int usecs);
bool resume_thread(thread_t *thread, bool run_at_once); // true if thrad was paused, false if was running
void kill_thread(thread_t *thread);
/* vim: set ts=4 sw=4 tw=0 noet :*/
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