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quakeforge/libs/util/sys.c
Bill Currie ce9e2e62e3 whitespace
2001-12-02 17:29:14 +00:00

367 lines
7.7 KiB
C
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/*
sys.c
virtual filesystem functions
Copyright (C) 1996-1997 Id Software, Inc.
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to:
Free Software Foundation, Inc.
59 Temple Place - Suite 330
Boston, MA 02111-1307, USA
*/
static const char rcsid[] =
"$Id$";
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#ifdef HAVE_STRING_H
# include <string.h>
#endif
#ifdef HAVE_STRINGS_H
# include <strings.h>
#endif
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#ifdef HAVE_LIMITS_H
# include <limits.h>
#endif
#ifdef HAVE_IO_H
# include <io.h>
#endif
#ifdef HAVE_WINDOWS_H
# include <windows.h>
#endif
#ifdef HAVE_SYS_MMAN_H
# include <sys/mman.h>
#endif
#include <errno.h>
#include <fcntl.h>
#include <stdarg.h>
#include <time.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <sys/types.h>
#include "QF/cvar.h"
#include "QF/sys.h"
#include "compat.h"
static void Sys_StdPrintf (const char *fmt, va_list args);
cvar_t *sys_nostdout;
cvar_t *sys_extrasleep;
cvar_t *sys_dead_sleep;
cvar_t *sys_sleep;
static sys_printf_t sys_printf_function = Sys_StdPrintf;
typedef struct shutdown_list_s {
struct shutdown_list_s *next;
void (*func)(void);
} shutdown_list_t;
static shutdown_list_t *shutdown_list;
/* The translation table between the graphical font and plain ASCII --KB */
const char sys_char_map[256] = {
'\0', '#', '#', '#', '#', '.', '#', '#',
'#', 9, 10, '#', ' ', 13, '.', '.',
'[', ']', '0', '1', '2', '3', '4', '5',
'6', '7', '8', '9', '.', '<', '=', '>',
' ', '!', '"', '#', '$', '%', '&', '\'',
'(', ')', '*', '+', ',', '-', '.', '/',
'0', '1', '2', '3', '4', '5', '6', '7',
'8', '9', ':', ';', '<', '=', '>', '?',
'@', 'A', 'B', 'C', 'D', 'E', 'F', 'G',
'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O',
'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W',
'X', 'Y', 'Z', '[', '\\', ']', '^', '_',
'`', 'a', 'b', 'c', 'd', 'e', 'f', 'g',
'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o',
'p', 'q', 'r', 's', 't', 'u', 'v', 'w',
'x', 'y', 'z', '{', '|', '}', '~', '<',
'<', '=', '>', '#', '#', '.', '#', '#',
'#', '#', ' ', '#', ' ', '>', '.', '.',
'[', ']', '0', '1', '2', '3', '4', '5',
'6', '7', '8', '9', '.', '<', '=', '>',
' ', '!', '"', '#', '$', '%', '&', '\'',
'(', ')', '*', '+', ',', '-', '.', '/',
'0', '1', '2', '3', '4', '5', '6', '7',
'8', '9', ':', ';', '<', '=', '>', '?',
'@', 'A', 'B', 'C', 'D', 'E', 'F', 'G',
'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O',
'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W',
'X', 'Y', 'Z', '[', '\\', ']', '^', '_',
'`', 'a', 'b', 'c', 'd', 'e', 'f', 'g',
'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o',
'p', 'q', 'r', 's', 't', 'u', 'v', 'w',
'x', 'y', 'z', '{', '|', '}', '~', '<'
};
#define MAXPRINTMSG 4096
void
Sys_mkdir (const char *path)
{
#ifdef HAVE_MKDIR
# ifdef _WIN32
if (mkdir (path) == 0)
return;
# else
if (mkdir (path, 0777) == 0)
return;
# endif
#else
# ifdef HAVE__MKDIR
if (_mkdir (path) == 0)
return;
# else
# error do not know how to make directories
# endif
#endif
if (errno != EEXIST)
Sys_Error ("mkdir %s: %s", path, strerror (errno));
}
int
Sys_FileTime (const char *path)
{
#ifdef HAVE_ACCESS
if (access (path, R_OK) == 0)
return 0;
#else
# ifdef HAVE__ACCESS
if (_access (path, R_OK) == 0)
return 0;
# else
# error do not know how to check access
# endif
#endif
return -1;
}
/*
Sys_SetPrintf
for want of a better name, but it sets the function pointer for the
actual implementation of Sys_Printf.
*/
void
Sys_SetPrintf (sys_printf_t func)
{
sys_printf_function = func;
}
static void
Sys_StdPrintf (const char *fmt, va_list args)
{
char msg[MAXPRINTMSG];
unsigned char *p;
if (sys_nostdout && sys_nostdout->int_val)
return;
vsnprintf (msg, sizeof (msg), fmt, args);
/* translate to ASCII instead of printing [xx] --KB */
for (p = (unsigned char *) msg; *p; p++)
putc (sys_char_map[*p], stdout);
fflush (stdout);
}
void
Sys_Printf (const char *fmt, ...)
{
va_list args;
va_start (args, fmt);
sys_printf_function (fmt, args);
va_end (args);
}
void
Sys_DPrintf (const char *fmt, ...)
{
va_list args;
if (!developer || !developer->int_val)
return;
va_start (args, fmt);
sys_printf_function (fmt, args);
va_end (args);
}
double
Sys_DoubleTime (void)
{
static qboolean first = true;
#ifdef _WIN32
static DWORD starttime;
DWORD now;
now = timeGetTime ();
if (first) {
first = false;
starttime = now;
return 0.0;
}
if (now < starttime) // wrapped?
return (now / 1000.0) + (LONG_MAX - starttime / 1000.0);
if (now - starttime == 0)
return 0.0;
return (now - starttime) / 1000.0;
#else
struct timeval tp;
struct timezone tzp;
double now;
static double start_time;
gettimeofday (&tp, &tzp);
now = tp.tv_sec + tp.tv_usec / 1e6;
if (first) {
first = false;
start_time = now;
}
return now - start_time;
#endif
}
void
Sys_MakeCodeWriteable (unsigned long startaddr, unsigned long length)
{
#ifdef _WIN32
DWORD flOldProtect;
if (!VirtualProtect
((LPVOID) startaddr, length, PAGE_READWRITE, &flOldProtect))
Sys_Error ("Protection change failed\n");
#else
# ifdef HAVE_MPROTECT
int r;
unsigned long addr;
int psize = getpagesize ();
addr = (startaddr & ~(psize - 1)) - psize;
// fprintf(stderr, "writable code %lx(%lx)-%lx, length=%lx\n", startaddr,
// addr, startaddr+length, length);
r = mprotect ((char *) addr, length + startaddr - addr + psize, 7);
if (r < 0)
Sys_Error ("Protection change failed\n");
# endif
#endif
}
void
Sys_Init_Cvars (void)
{
sys_nostdout = Cvar_Get ("sys_nostdout", "0", CVAR_NONE, NULL,
"Set to disable std out");
sys_extrasleep = Cvar_Get ("sys_extrasleep", "0", CVAR_NONE, NULL,
"Set to cause whatever amount delay in "
"microseconds you want. Mostly "
"useful to generate simulated bad "
"connections.");
sys_dead_sleep = Cvar_Get ("sys_dead_sleep", "1", CVAR_NONE, NULL,
"When set, the server gets NO cpu if no "
"clients are connected and there's no other "
"activity. *MIGHT* cause problems with some "
"mods.");
sys_sleep = Cvar_Get ("sys_sleep", "8", CVAR_NONE, NULL, "Sleep how long "
"in seconds between checking for connections. "
"Minimum is 0, maximum is 13");
}
static void
run_shutdown_list (void)
{
shutdown_list_t *p = shutdown_list;
while (p) {
p->func ();
p = p->next;
}
}
void
Sys_Quit (void)
{
run_shutdown_list ();
exit (0);
}
void
Sys_Error (const char *error, ...)
{
va_list argptr;
char string[1024];
va_start (argptr, error);
vsnprintf (string, sizeof (string), error, argptr);
va_end (argptr);
#ifdef WIN32
MessageBox (NULL, string, "Error", 0 /* MB_OK */ );
#endif
fprintf (stderr, "Fatal error: %s\n", string);
run_shutdown_list ();
exit (1);
}
void
Sys_RegisterShutdown (void (*func) (void))
{
shutdown_list_t *p;
if (!func)
return;
p = malloc (sizeof (*p));
if (!p)
Sys_Error ("Sys_RegisterShutdown: insufficient memory");
p->func = func;
p->next = shutdown_list;
shutdown_list = p;
}
int
Sys_TimeID (void) //FIXME I need a new name, one that doesn't make me feel 3 feet thick
{
int val;
#ifdef _WIN32
val = ((int) (timeGetTime () * 1000) * time (NULL)) & 0xffff;
#else
val = ((int) (getpid () + getuid () * 1000) * time (NULL)) & 0xffff;
#endif
return val;
}
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