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/* Copyright (C) 1995,1996 Robert de Bath <rdebath@cix.compulink.co.uk>
* This file is part of the Linux-8086 C library and is distributed
* under the GNU Library General Public License.
*/
#include <sys/types.h>
#include <errno.h>
#include <time.h>
/* MSDOS has it's own versions */
#ifndef __MSDOS__
/********************** Function time ************************************/
#ifdef L_time
time_t time(where)
time_t *where;
{
struct timeval rv;
if( gettimeofday(&rv, (void*)0) < 0 ) return -1;
if(where) *where = rv.tv_sec;
return rv.tv_sec;
}
#endif
/********************** Function abort ************************************/
#ifdef L_abort
#include <signal.h>
int abort()
{
signal(SIGABRT, SIG_DFL);
kill(SIGABRT, getpid()); /* Correct one */
pause(); /* System may just schedule */
signal(SIGKILL, SIG_DFL);
kill(SIGKILL, getpid()); /* Can't trap this! */
__exit(255); /* WHAT!! */
}
#endif
/********************** Function wait ************************************/
#ifdef L_wait
int
wait(status)
int * status;
{
return wait4(-1, status, 0, (void*)0);
}
#endif
/********************** Function waitpid ************************************/
#ifdef L_waitpid
int
waitpid(pid, status, opts)
int pid;
int * status;
int opts;
{
return wait4(pid, status, opts, (void*)0);
}
#endif
/********************** Function killpg ************************************/
#ifdef L_killpg
int
killpg(pid, sig)
int pid;
int sig;
{
if(pid == 0)
pid = getpgrp();
if(pid > 1)
return kill(-pid, sig);
errno = EINVAL;
return -1;
}
#endif
/********************** Function setpgrp ************************************/
#ifdef L_setpgrp
int
setpgrp()
{
return setpgid(0,0);
}
#endif
/********************** Function sleep ************************************/
#ifdef L_sleep
#include <signal.h>
/* This uses SIGALRM, it does keep the previous alarm call but will lose
* any alarms that go off during the sleep
*/
static void alrm() { }
unsigned int sleep(seconds)
unsigned int seconds;
{
void (*last_alarm)();
unsigned int prev_sec;
prev_sec = alarm(0);
if( prev_sec <= seconds ) prev_sec = 1; else prev_sec -= seconds;
last_alarm = signal(SIGALRM, alrm);
alarm(seconds);
pause();
seconds = alarm(prev_sec);
signal(SIGALRM, last_alarm);
return seconds;
}
#if 0
/* Is this a better way ? If we have select of course :-) */
#include <sys/time.h>
unsigned int
sleep(seconds)
unsigned int seconds;
{
struct timeval timeout;
time_t start = time((void*)0);
timeout.tv_sec = seconds;
timeout.tv_usec = 0;
select(1, NULL, NULL, NULL, &timeout);
return seconds - (time((void*)0) - start);
}
#endif
#endif
/********************** Function usleep ************************************/
#ifdef L_usleep
#include <sys/time.h>
void
usleep(useconds)
unsigned long useconds;
{
struct timeval timeout;
timeout.tv_sec = useconds%1000000L;
timeout.tv_usec = useconds/1000000L;
select(1, NULL, NULL, NULL, &timeout);
}
#endif
/********************** THE END ********************************************/
#endif /* __MSDOS__ */
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