mirror of
https://github.com/ioquake/ioq3.git
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435 lines
10 KiB
C
435 lines
10 KiB
C
/*
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===========================================================================
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Copyright (C) 1999-2005 Id Software, Inc.
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This file is part of Quake III Arena source code.
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Quake III Arena source code is free software; you can redistribute it
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and/or modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of the License,
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or (at your option) any later version.
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Quake III Arena source code is distributed in the hope that it will be
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useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Quake III Arena source code; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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===========================================================================
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*/
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <errno.h>
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#include <stdio.h>
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#include <dirent.h>
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#include <unistd.h>
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#include <sys/mman.h>
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#include <sys/time.h>
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#include <pwd.h>
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#include "../qcommon/q_shared.h"
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#include "../qcommon/qcommon.h"
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//=============================================================================
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// Used to determine CD Path
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static char cdPath[MAX_OSPATH];
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// Used to determine local installation path
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static char installPath[MAX_OSPATH];
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// Used to determine where to store user-specific files
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static char homePath[MAX_OSPATH];
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/*
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================
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Sys_Milliseconds
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================
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*/
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/* base time in seconds, that's our origin
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timeval:tv_sec is an int:
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assuming this wraps every 0x7fffffff - ~68 years since the Epoch (1970) - we're safe till 2038
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using unsigned long data type to work right with Sys_XTimeToSysTime */
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unsigned long sys_timeBase = 0;
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/* current time in ms, using sys_timeBase as origin
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NOTE: sys_timeBase*1000 + curtime -> ms since the Epoch
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0x7fffffff ms - ~24 days
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although timeval:tv_usec is an int, I'm not sure wether it is actually used as an unsigned int
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(which would affect the wrap period) */
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int curtime;
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int Sys_Milliseconds (void)
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{
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struct timeval tp;
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gettimeofday(&tp, NULL);
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if (!sys_timeBase)
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{
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sys_timeBase = tp.tv_sec;
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return tp.tv_usec/1000;
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}
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curtime = (tp.tv_sec - sys_timeBase)*1000 + tp.tv_usec/1000;
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return curtime;
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}
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#if (defined(__linux__) || defined(__FreeBSD__) || defined(__sun)) && !defined(DEDICATED)
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/*
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================
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Sys_XTimeToSysTime
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sub-frame timing of events returned by X
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X uses the Time typedef - unsigned long
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disable with in_subframe 0
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sys_timeBase*1000 is the number of ms since the Epoch of our origin
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xtime is in ms and uses the Epoch as origin
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Time data type is an unsigned long: 0xffffffff ms - ~49 days period
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I didn't find much info in the XWindow documentation about the wrapping
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we clamp sys_timeBase*1000 to unsigned long, that gives us the current origin for xtime
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the computation will still work if xtime wraps (at ~49 days period since the Epoch) after we set sys_timeBase
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================
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*/
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extern cvar_t *in_subframe;
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int Sys_XTimeToSysTime (unsigned long xtime)
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{
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int ret, time, test;
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if (!in_subframe->value)
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{
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// if you don't want to do any event times corrections
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return Sys_Milliseconds();
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}
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// test the wrap issue
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#if 0
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// reference values for test: sys_timeBase 0x3dc7b5e9 xtime 0x541ea451 (read these from a test run)
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// xtime will wrap in 0xabe15bae ms >~ 0x2c0056 s (33 days from Nov 5 2002 -> 8 Dec)
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// NOTE: date -d '1970-01-01 UTC 1039384002 seconds' +%c
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// use sys_timeBase 0x3dc7b5e9+0x2c0056 = 0x3df3b63f
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// after around 5s, xtime would have wrapped around
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// we get 7132, the formula handles the wrap safely
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unsigned long xtime_aux,base_aux;
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int test;
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// Com_Printf("sys_timeBase: %p\n", sys_timeBase);
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// Com_Printf("xtime: %p\n", xtime);
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xtime_aux = 500; // 500 ms after wrap
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base_aux = 0x3df3b63f; // the base a few seconds before wrap
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test = xtime_aux - (unsigned long)(base_aux*1000);
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Com_Printf("xtime wrap test: %d\n", test);
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#endif
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// some X servers (like suse 8.1's) report weird event times
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// if the game is loading, resolving DNS, etc. we are also getting old events
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// so we only deal with subframe corrections that look 'normal'
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ret = xtime - (unsigned long)(sys_timeBase*1000);
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time = Sys_Milliseconds();
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test = time - ret;
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//printf("delta: %d\n", test);
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if (test < 0 || test > 30) // in normal conditions I've never seen this go above
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{
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return time;
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}
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return ret;
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}
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#endif
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//#if 0 // bk001215 - see snapvector.nasm for replacement
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#if !(defined __i386__) // rcg010206 - using this for PPC builds...
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long fastftol( float f ) { // bk001213 - from win32/win_shared.c
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//static int tmp;
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// __asm fld f
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//__asm fistp tmp
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//__asm mov eax, tmp
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return (long)f;
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}
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void Sys_SnapVector( float *v ) { // bk001213 - see win32/win_shared.c
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// bk001213 - old linux
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v[0] = rint(v[0]);
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v[1] = rint(v[1]);
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v[2] = rint(v[2]);
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}
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#endif
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void Sys_Mkdir( const char *path )
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{
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mkdir (path, 0777);
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}
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char *strlwr (char *s) {
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if ( s==NULL ) { // bk001204 - paranoia
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assert(0);
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return s;
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}
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while (*s) {
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*s = tolower(*s);
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s++;
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}
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return s; // bk001204 - duh
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}
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//============================================
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#define MAX_FOUND_FILES 0x1000
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// bk001129 - new in 1.26
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void Sys_ListFilteredFiles( const char *basedir, char *subdirs, char *filter, char **list, int *numfiles ) {
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char search[MAX_OSPATH], newsubdirs[MAX_OSPATH];
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char filename[MAX_OSPATH];
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DIR *fdir;
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struct dirent *d;
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struct stat st;
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if ( *numfiles >= MAX_FOUND_FILES - 1 ) {
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return;
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}
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if (strlen(subdirs)) {
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Com_sprintf( search, sizeof(search), "%s/%s", basedir, subdirs );
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}
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else {
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Com_sprintf( search, sizeof(search), "%s", basedir );
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}
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if ((fdir = opendir(search)) == NULL) {
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return;
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}
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while ((d = readdir(fdir)) != NULL) {
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Com_sprintf(filename, sizeof(filename), "%s/%s", search, d->d_name);
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if (stat(filename, &st) == -1)
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continue;
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if (st.st_mode & S_IFDIR) {
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if (Q_stricmp(d->d_name, ".") && Q_stricmp(d->d_name, "..")) {
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if (strlen(subdirs)) {
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Com_sprintf( newsubdirs, sizeof(newsubdirs), "%s/%s", subdirs, d->d_name);
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}
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else {
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Com_sprintf( newsubdirs, sizeof(newsubdirs), "%s", d->d_name);
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}
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Sys_ListFilteredFiles( basedir, newsubdirs, filter, list, numfiles );
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}
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}
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if ( *numfiles >= MAX_FOUND_FILES - 1 ) {
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break;
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}
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Com_sprintf( filename, sizeof(filename), "%s/%s", subdirs, d->d_name );
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if (!Com_FilterPath( filter, filename, qfalse ))
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continue;
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list[ *numfiles ] = CopyString( filename );
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(*numfiles)++;
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}
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closedir(fdir);
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}
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// bk001129 - in 1.17 this used to be
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// char **Sys_ListFiles( const char *directory, const char *extension, int *numfiles, qboolean wantsubs )
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char **Sys_ListFiles( const char *directory, const char *extension, char *filter, int *numfiles, qboolean wantsubs )
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{
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struct dirent *d;
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// char *p; // bk001204 - unused
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DIR *fdir;
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qboolean dironly = wantsubs;
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char search[MAX_OSPATH];
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int nfiles;
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char **listCopy;
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char *list[MAX_FOUND_FILES];
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//int flag; // bk001204 - unused
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int i;
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struct stat st;
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int extLen;
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if (filter) {
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nfiles = 0;
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Sys_ListFilteredFiles( directory, "", filter, list, &nfiles );
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list[ nfiles ] = NULL;
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*numfiles = nfiles;
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if (!nfiles)
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return NULL;
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listCopy = Z_Malloc( ( nfiles + 1 ) * sizeof( *listCopy ) );
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for ( i = 0 ; i < nfiles ; i++ ) {
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listCopy[i] = list[i];
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}
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listCopy[i] = NULL;
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return listCopy;
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}
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if ( !extension)
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extension = "";
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if ( extension[0] == '/' && extension[1] == 0 ) {
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extension = "";
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dironly = qtrue;
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}
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extLen = strlen( extension );
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// search
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nfiles = 0;
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if ((fdir = opendir(directory)) == NULL) {
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*numfiles = 0;
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return NULL;
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}
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while ((d = readdir(fdir)) != NULL) {
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Com_sprintf(search, sizeof(search), "%s/%s", directory, d->d_name);
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if (stat(search, &st) == -1)
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continue;
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if ((dironly && !(st.st_mode & S_IFDIR)) ||
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(!dironly && (st.st_mode & S_IFDIR)))
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continue;
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if (*extension) {
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if ( strlen( d->d_name ) < strlen( extension ) ||
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Q_stricmp(
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d->d_name + strlen( d->d_name ) - strlen( extension ),
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extension ) ) {
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continue; // didn't match
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}
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}
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if ( nfiles == MAX_FOUND_FILES - 1 )
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break;
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list[ nfiles ] = CopyString( d->d_name );
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nfiles++;
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}
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list[ nfiles ] = NULL;
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closedir(fdir);
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// return a copy of the list
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*numfiles = nfiles;
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if ( !nfiles ) {
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return NULL;
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}
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listCopy = Z_Malloc( ( nfiles + 1 ) * sizeof( *listCopy ) );
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for ( i = 0 ; i < nfiles ; i++ ) {
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listCopy[i] = list[i];
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}
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listCopy[i] = NULL;
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return listCopy;
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}
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void Sys_FreeFileList( char **list ) {
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int i;
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if ( !list ) {
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return;
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}
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for ( i = 0 ; list[i] ; i++ ) {
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Z_Free( list[i] );
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}
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Z_Free( list );
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}
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char *Sys_Cwd( void )
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{
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static char cwd[MAX_OSPATH];
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getcwd( cwd, sizeof( cwd ) - 1 );
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cwd[MAX_OSPATH-1] = 0;
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return cwd;
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}
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void Sys_SetDefaultCDPath(const char *path)
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{
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Q_strncpyz(cdPath, path, sizeof(cdPath));
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}
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char *Sys_DefaultCDPath(void)
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{
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return cdPath;
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}
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void Sys_SetDefaultInstallPath(const char *path)
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{
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Q_strncpyz(installPath, path, sizeof(installPath));
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}
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char *Sys_DefaultInstallPath(void)
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{
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if (*installPath)
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return installPath;
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else
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return Sys_Cwd();
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}
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void Sys_SetDefaultHomePath(const char *path)
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{
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Q_strncpyz(homePath, path, sizeof(homePath));
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}
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char *Sys_DefaultHomePath(void)
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{
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char *p;
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if (*homePath)
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return homePath;
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if ((p = getenv("HOME")) != NULL) {
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Q_strncpyz(homePath, p, sizeof(homePath));
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#ifdef MACOS_X
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Q_strcat(homePath, sizeof(homePath), "/Library/Application Support/Quake3");
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#else
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Q_strcat(homePath, sizeof(homePath), "/.q3a");
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#endif
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if (mkdir(homePath, 0777)) {
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if (errno != EEXIST)
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Sys_Error("Unable to create directory \"%s\", error is %s(%d)\n", homePath, strerror(errno), errno);
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}
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return homePath;
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}
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return ""; // assume current dir
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}
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//============================================
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int Sys_GetProcessorId( void )
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{
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return CPUID_GENERIC;
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}
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void Sys_ShowConsole( int visLevel, qboolean quitOnClose )
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{
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}
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char *Sys_GetCurrentUser( void )
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{
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struct passwd *p;
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if ( (p = getpwuid( getuid() )) == NULL ) {
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return "player";
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}
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return p->pw_name;
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}
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#if defined(__linux__) || defined(__FreeBSD__)
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// TTimo
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// sysconf() in libc, POSIX.1 compliant
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unsigned int Sys_ProcessorCount(void)
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{
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return sysconf(_SC_NPROCESSORS_ONLN);
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}
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#endif
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