#include "std.h"
#include "port.h"
#include "lint.h"
#include "file_incl.h"
#include "network_incl.h"
#include <unistd.h>
#ifndef MINGW
#include <sys/mman.h>
#endif
#if defined(WIN32)
int dos_style_link (char * x, char * y) {
char link_cmd[100];
sprintf(link_cmd, "copy %s %s", x, y);
return system(link_cmd);
}
#endif
/* for get_cpu_times() */
#ifdef GET_PROCESS_STATS
#include <sys/procstats.h>
#endif
#ifdef RUSAGE
#include <sys/resource.h>
#endif
#ifdef sun
time_t time (time_t *);
#endif
/*
* Return a pseudo-random number in the range 0 .. n-1
*/
long random_number (long n)
{
#if defined(RAND) || defined(DRAND48)
static char called = 0;
if (!called) {
time_t tim;
time(&tim);
# ifdef RAND
srand(tim);
# else
srand48(tim);
# endif
called = 1;
} /* endif */
# ifdef RAND
# ifdef MINGW
return rand() % n;
# else
return 1 + (long) ((float)n * rand() / (RAND_MAX+1.0);
#endif
# else
return (long)(drand48() * n);
# endif
#else
# ifdef RANDOM
return random() % n;
# else /* RANDOM */
return current_time % n; /* You really don't want to use this method */
# endif /* RANDOM */
#endif /* RAND */
}
/*
* The function time() can't really be trusted to return an integer.
* But MudOS uses the 'current_time', which is an integer number
* of seconds. To make this more portable, the following functions
* should be defined in such a way as to return the number of seconds since
* some chosen year. The old behaviour of time(), is to return the number
* of seconds since 1970.
*/
long get_current_time()
{
return time(0l); /* Just use the old time() for now */
}
char *time_string (time_t t)
{
char *res = ctime(&t);
if(!res)
res = "ctime failed";
return res;
}
/*
* Initialize the microsecond clock.
*/
void init_usec_clock()
{
#ifdef _SEQUENT_
usclk_init();
#endif
}
/*
* Get a microsecond clock sample.
*/
void
get_usec_clock (long * sec, long * usec)
{
#ifdef HAS_GETTIMEOFDAY
struct timeval tv;
gettimeofday(&tv, NULL);
*sec = tv.tv_sec;
*usec = tv.tv_usec;
#else
#ifdef _SEQUENT_
*sec = 0;
*usec = GETUSCLK();
#else
*sec = time(0);
*usec = 0;
#endif
#endif
}
#ifdef USE_POSIX_SIGNALS
int
port_sigblock (sigset_t mask)
{
sigset_t omask;
sigprocmask(SIG_BLOCK, &mask, &omask);
return (omask);
}
int
port_sigmask (int sig)
{
sigset_t set;
sigemptyset(&set);
sigaddset(&set, sig);
return (set);
}
void
(*port_signal(sig, func)) ()
int sig;
void (*func) ();
{
struct sigaction act, oact;
act.sa_handler = func;
act.sa_mask = 0;
act.sa_flags = 0;
if (sigaction(sig, &act, &oact) == -1)
return ((void (*) ()) -1);
return (oact.sa_handler);
}
int
port_sigsetmask (sigset_t mask)
{
sigset_t omask;
sigprocmask(SIG_SETMASK, &mask, &omask);
return (omask);
}
#endif
int
get_cpu_times (unsigned long * secs, unsigned long * usecs)
{
#ifdef RUSAGE
struct rusage rus;
#endif
#if defined(TIMES) && !defined(RUSAGE)
struct tms t;
unsigned long total;
#endif
#ifdef GET_PROCESS_STATS
struct process_stats ps;
#endif
#ifdef RUSAGE /* start RUSAGE */
if (getrusage(RUSAGE_SELF, &rus) < 0) {
return 0;
}
*secs = rus.ru_utime.tv_sec + rus.ru_stime.tv_sec;
*usecs = rus.ru_utime.tv_usec + rus.ru_stime.tv_usec;
return 1;
#else /* end then RUSAGE */
#ifdef GET_PROCESS_STATS /* start GET_PROCESS_STATS */
if (get_process_stats(NULL, PS_SELF, &ps, NULL) == -1) {
return 0;
}
*secs = ps.ps_utime.tv_sec + ps.ps_stime.tv_sec;
*usecs = ps.ps_utime.tv_usec + ps.ps_stime.tv_usec;
return 1;
#else /* end then GET_PROCESS_STATS */
#ifdef TIMES /* start TIMES */
times(&t);
*secs = (total = t.tms_utime + t.tms_stime) / CLK_TCK;
*usecs = ((total - (*secs * CLK_TCK)) * 1000000) / CLK_TCK;
return 1;
#else /* end then TIMES */
return 0;
#endif /* end TIMES */
#endif /* end else GET_PROCESS_STATS */
#endif /* end else RUSAGE */
}
/* return the current working directory */
char *
get_current_dir (char * buf, int limit)
{
#ifdef HAS_GETCWD
return getcwd(buf, limit); /* POSIX */
#else
return getwd(buf); /* BSD */
#endif
}
#ifndef HAS_STRERROR
/* for those systems without strerror() but with sys_errlist, sys_nerr */
/* Warning: Sun has a prototype for strerror, but no definition for it,
so we can't use that name */
extern char *sys_errlist[];
extern int sys_nerr;
char *port_strerror (int which)
{
if ((which < 0) || (which >= sys_nerr)) {
return "unknown error";
} else {
return sys_errlist[which];
}
}
#endif /* STRERROR */
#ifdef MEMMOVE_MISSING
/* for those without memmove() and a working bcopy() that can handle overlaps */
INLINE char *memmove (register char * b, register char * a, register int s)
{
char *r = b;
if (b < a) {
while (s--)
*(b++) = *(a++);
} else if (b > a) {
b += s;
a += s;
while (s--)
*(--b) = *(--a);
}
return r;
}
#endif
#ifdef WIN32
char *WinStrError(int err) {
static char buf[30];
if (errno < 10000) return strerror(err);
sprintf(buf, "error #%d", err);
return buf;
}
#endif
#ifdef MMAP_SBRK
void * sbrkx(long size){
static void *end = 0;
static unsigned long tsize = 0;
void *tmp, *result;
long long newsize;
if(!end){
tmp = mmap((void *)0x41000000, 4096, PROT_READ|PROT_WRITE, MAP_FIXED|MAP_PRIVATE|MAP_ANONYMOUS,0,0);
tsize=4096;
end=(void *)0x41000000;
if(tmp != end)
return NULL;
}
newsize = (long)end + size;
result = end;
end = newsize;
newsize &= 0xFFFFF000;
newsize += 0x1000;
newsize -= 0x41000000;
tmp = mremap((void *)0x41000000, tsize, newsize, 0);
if(tmp != (void *) 0x41000000)
return NULL;
tsize = newsize;
return result;
}
#else
void *sbrkx(long size){
#ifndef MINGW
return sbrk(size);
#endif
}
#endif
