sysproc.c

#include "types.h"
#include "x86.h"
#include "defs.h"
#include "date.h"
#include "param.h"
#include "memlayout.h"
#include "mmu.h"
#include "proc.h"

int
sys_thread_create(void)
{
  int fcn, arg,stack, ret;
  argint(0,&fcn);
  argint(1,&arg);
  argint(2,&stack);
  ret = thread_create((void*(*)(void *))fcn,(void *)arg,(void *)stack);
  return ret;
}

int 
sys_thread_join(void)
{
    int tid;
    int retval;
    argint(0, &tid);
    argint(1, &retval);
    return thread_join(tid, (void**)retval);
}

int 
sys_thread_exit(void)
{
     int retval;
     argint(0, &retval);
     return thread_exit((void*)retval);
}

int
sys_getpid(void){
	return myproc()->pid;
}
int
sys_gettid(void){
     return gettid();
}

int
sys_procdump(void)
{
   procdump();
   return 0;
}
int
sys_fork(void)
{
  return fork();
}

int
sys_exit(void)
{
  exit();
  return 0;  // not reached
}

int
sys_wait(void)
{
  return wait();
}

int
sys_kill(void)
{
  int pid;

  if(argint(0, &pid) < 0)
    return -1;
  return kill(pid);
}

/*int
sys_getpid(void)
{
	cprintf("sysproc");
  return myproc()->pid;
}*/

int
sys_sbrk(void)
{
  int addr;
  int n;

  if(argint(0, &n) < 0)
    return -1;
  addr = myproc()->sz;
  if(growproc(n) < 0)
    return -1;
  return addr;
}

int
sys_sleep(void)
{
  int n;
  uint ticks0;

  if(argint(0, &n) < 0)
    return -1;
  acquire(&tickslock);
  ticks0 = ticks;
  while(ticks - ticks0 < n){
    if(myproc()->killed){
      release(&tickslock);
      return -1;
    }
    sleep(&ticks, &tickslock);
  }
  release(&tickslock);
  return 0;
}

// return how many clock tick interrupts have occurred
// since start.
int
sys_uptime(void)
{
  uint xticks;

  acquire(&tickslock);
  xticks = ticks;
  release(&tickslock);
  return xticks;
}