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Quake-III-Arena/code/sys/sys_main.c

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/*
===========================================================================
Copyright (C) 1999-2005 Id Software, Inc.
This file is part of Quake III Arena source code.
Quake III Arena source code 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.
Quake III Arena source code 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 Quake III Arena source code; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
===========================================================================
*/
#include <signal.h>
#include <stdlib.h>
#include <limits.h>
#include <sys/types.h>
#include <stdarg.h>
#include <stdio.h>
#include <sys/stat.h>
#include <string.h>
#include <ctype.h>
#include <errno.h>
#ifndef DEDICATED
#ifdef USE_LOCAL_HEADERS
# include "SDL.h"
# include "SDL_cpuinfo.h"
#else
# include <SDL.h>
# include <SDL_cpuinfo.h>
#endif
#endif
#include "sys_local.h"
#include "sys_loadlib.h"
#include "../qcommon/q_shared.h"
#include "../qcommon/qcommon.h"
static char binaryPath[ MAX_OSPATH ] = { 0 };
static char installPath[ MAX_OSPATH ] = { 0 };
/*
=================
Sys_SetBinaryPath
=================
*/
void Sys_SetBinaryPath(const char *path)
{
Q_strncpyz(binaryPath, path, sizeof(binaryPath));
}
/*
=================
Sys_BinaryPath
=================
*/
char *Sys_BinaryPath(void)
{
return binaryPath;
}
/*
=================
Sys_SetDefaultInstallPath
=================
*/
void Sys_SetDefaultInstallPath(const char *path)
{
Q_strncpyz(installPath, path, sizeof(installPath));
}
/*
=================
Sys_DefaultInstallPath
=================
*/
char *Sys_DefaultInstallPath(void)
{
if (*installPath)
return installPath;
else
return Sys_Cwd();
}
/*
=================
Sys_DefaultAppPath
=================
*/
char *Sys_DefaultAppPath(void)
{
return Sys_BinaryPath();
}
/*
=================
Sys_In_Restart_f
Restart the input subsystem
=================
*/
void Sys_In_Restart_f( void )
{
IN_Restart( );
}
/*
=================
Sys_ConsoleInput
Handle new console input
=================
*/
char *Sys_ConsoleInput(void)
{
return CON_Input( );
}
#ifdef DEDICATED
# define PID_FILENAME PRODUCT_NAME "_server.pid"
#else
# define PID_FILENAME PRODUCT_NAME ".pid"
#endif
/*
=================
Sys_PIDFileName
=================
*/
static char *Sys_PIDFileName( void )
{
return va( "%s/%s", Sys_TempPath( ), PID_FILENAME );
}
/*
=================
Sys_WritePIDFile
Return qtrue if there is an existing stale PID file
=================
*/
qboolean Sys_WritePIDFile( void )
{
char *pidFile = Sys_PIDFileName( );
FILE *f;
qboolean stale = qfalse;
// First, check if the pid file is already there
if( ( f = fopen( pidFile, "r" ) ) != NULL )
{
char pidBuffer[ 64 ] = { 0 };
int pid;
pid = fread( pidBuffer, sizeof( char ), sizeof( pidBuffer ) - 1, f );
fclose( f );
if(pid > 0)
{
pid = atoi( pidBuffer );
if( !Sys_PIDIsRunning( pid ) )
stale = qtrue;
}
else
stale = qtrue;
}
if( ( f = fopen( pidFile, "w" ) ) != NULL )
{
fprintf( f, "%d", Sys_PID( ) );
fclose( f );
}
else
Com_Printf( S_COLOR_YELLOW "Couldn't write %s.\n", pidFile );
return stale;
}
/*
=================
Sys_Exit
Single exit point (regular exit or in case of error)
=================
*/
static __attribute__ ((noreturn)) void Sys_Exit( int exitCode )
{
CON_Shutdown( );
#ifndef DEDICATED
SDL_Quit( );
#endif
if( exitCode < 2 )
{
// Normal exit
remove( Sys_PIDFileName( ) );
}
Sys_PlatformExit( );
exit( exitCode );
}
/*
=================
Sys_Quit
=================
*/
void Sys_Quit( void )
{
Sys_Exit( 0 );
}
/*
=================
Sys_GetProcessorFeatures
=================
*/
cpuFeatures_t Sys_GetProcessorFeatures( void )
{
cpuFeatures_t features = 0;
#ifndef DEDICATED
if( SDL_HasRDTSC( ) ) features |= CF_RDTSC;
if( SDL_HasMMX( ) ) features |= CF_MMX;
if( SDL_HasMMXExt( ) ) features |= CF_MMX_EXT;
if( SDL_Has3DNow( ) ) features |= CF_3DNOW;
if( SDL_Has3DNowExt( ) ) features |= CF_3DNOW_EXT;
if( SDL_HasSSE( ) ) features |= CF_SSE;
if( SDL_HasSSE2( ) ) features |= CF_SSE2;
if( SDL_HasAltiVec( ) ) features |= CF_ALTIVEC;
#endif
return features;
}
/*
=================
Sys_Init
=================
*/
void Sys_Init(void)
{
Cmd_AddCommand( "in_restart", Sys_In_Restart_f );
Cvar_Set( "arch", OS_STRING " " ARCH_STRING );
Cvar_Set( "username", Sys_GetCurrentUser( ) );
}
/*
=================
Sys_AnsiColorPrint
Transform Q3 colour codes to ANSI escape sequences
=================
*/
void Sys_AnsiColorPrint( const char *msg )
{
static char buffer[ MAXPRINTMSG ];
int length = 0;
static int q3ToAnsi[ 8 ] =
{
30, // COLOR_BLACK
31, // COLOR_RED
32, // COLOR_GREEN
33, // COLOR_YELLOW
34, // COLOR_BLUE
36, // COLOR_CYAN
35, // COLOR_MAGENTA
0 // COLOR_WHITE
};
while( *msg )
{
if( Q_IsColorString( msg ) || *msg == '\n' )
{
// First empty the buffer
if( length > 0 )
{
buffer[ length ] = '\0';
fputs( buffer, stderr );
length = 0;
}
if( *msg == '\n' )
{
// Issue a reset and then the newline
fputs( "\033[0m\n", stderr );
msg++;
}
else
{
// Print the color code
Com_sprintf( buffer, sizeof( buffer ), "\033[%dm",
q3ToAnsi[ ColorIndex( *( msg + 1 ) ) ] );
fputs( buffer, stderr );
msg += 2;
}
}
else
{
if( length >= MAXPRINTMSG - 1 )
break;
buffer[ length ] = *msg;
length++;
msg++;
}
}
// Empty anything still left in the buffer
if( length > 0 )
{
buffer[ length ] = '\0';
fputs( buffer, stderr );
}
}
/*
=================
Sys_Print
=================
*/
void Sys_Print( const char *msg )
{
CON_LogWrite( msg );
CON_Print( msg );
}
/*
=================
Sys_Error
=================
*/
void Sys_Error( const char *error, ... )
{
va_list argptr;
char string[1024];
va_start (argptr,error);
Q_vsnprintf (string, sizeof(string), error, argptr);
va_end (argptr);
Sys_ErrorDialog( string );
Sys_Exit( 3 );
}
#if 0
/*
=================
Sys_Warn
=================
*/
static __attribute__ ((format (printf, 1, 2))) void Sys_Warn( char *warning, ... )
{
va_list argptr;
char string[1024];
va_start (argptr,warning);
Q_vsnprintf (string, sizeof(string), warning, argptr);
va_end (argptr);
CON_Print( va( "Warning: %s", string ) );
}
#endif
/*
============
Sys_FileTime
returns -1 if not present
============
*/
int Sys_FileTime( char *path )
{
struct stat buf;
if (stat (path,&buf) == -1)
return -1;
return buf.st_mtime;
}
/*
=================
Sys_UnloadDll
=================
*/
void Sys_UnloadDll( void *dllHandle )
{
if( !dllHandle )
{
Com_Printf("Sys_UnloadDll(NULL)\n");
return;
}
Sys_UnloadLibrary(dllHandle);
}
/*
=================
Sys_LoadDll
First try to load library name from system library path,
from executable path, then fs_basepath.
=================
*/
void *Sys_LoadDll(const char *name, qboolean useSystemLib)
{
void *dllhandle;
if(useSystemLib)
Com_Printf("Trying to load \"%s\"...\n", name);
if(!useSystemLib || !(dllhandle = Sys_LoadLibrary(name)))
{
const char *topDir;
char libPath[MAX_OSPATH];
topDir = Sys_BinaryPath();
if(!*topDir)
topDir = ".";
Com_Printf("Trying to load \"%s\" from \"%s\"...\n", name, topDir);
Com_sprintf(libPath, sizeof(libPath), "%s%c%s", topDir, PATH_SEP, name);
if(!(dllhandle = Sys_LoadLibrary(libPath)))
{
const char *basePath = Cvar_VariableString("fs_basepath");
if(!basePath || !*basePath)
basePath = ".";
if(FS_FilenameCompare(topDir, basePath))
{
Com_Printf("Trying to load \"%s\" from \"%s\"...\n", name, basePath);
Com_sprintf(libPath, sizeof(libPath), "%s%c%s", basePath, PATH_SEP, name);
dllhandle = Sys_LoadLibrary(libPath);
}
if(!dllhandle)
Com_Printf("Loading \"%s\" failed\n", name);
}
}
return dllhandle;
}
/*
=================
Sys_LoadGameDll
Used to load a development dll instead of a virtual machine
=================
*/
void *Sys_LoadGameDll(const char *name,
intptr_t (QDECL **entryPoint)(int, ...),
intptr_t (*systemcalls)(intptr_t, ...))
{
void *libHandle;
void (*dllEntry)(intptr_t (*syscallptr)(intptr_t, ...));
assert(name);
Com_Printf( "Loading DLL file: %s\n", name);
libHandle = Sys_LoadLibrary(name);
if(!libHandle)
{
Com_Printf("Sys_LoadGameDll(%s) failed:\n\"%s\"\n", name, Sys_LibraryError());
return NULL;
}
dllEntry = Sys_LoadFunction( libHandle, "dllEntry" );
*entryPoint = Sys_LoadFunction( libHandle, "vmMain" );
if ( !*entryPoint || !dllEntry )
{
Com_Printf ( "Sys_LoadGameDll(%s) failed to find vmMain function:\n\"%s\" !\n", name, Sys_LibraryError( ) );
Sys_UnloadLibrary(libHandle);
return NULL;
}
Com_Printf ( "Sys_LoadGameDll(%s) found vmMain function at %p\n", name, *entryPoint );
dllEntry( systemcalls );
return libHandle;
}
/*
=================
Sys_ParseArgs
=================
*/
void Sys_ParseArgs( int argc, char **argv )
{
if( argc == 2 )
{
if( !strcmp( argv[1], "--version" ) ||
!strcmp( argv[1], "-v" ) )
{
const char* date = __DATE__;
#ifdef DEDICATED
fprintf( stdout, Q3_VERSION " dedicated server (%s)\n", date );
#else
fprintf( stdout, Q3_VERSION " client (%s)\n", date );
#endif
Sys_Exit( 0 );
}
}
}
#ifndef DEFAULT_BASEDIR
# ifdef MACOS_X
# define DEFAULT_BASEDIR Sys_StripAppBundle(Sys_BinaryPath())
# else
# define DEFAULT_BASEDIR Sys_BinaryPath()
# endif
#endif
/*
=================
Sys_SigHandler
=================
*/
void Sys_SigHandler( int signal )
{
static qboolean signalcaught = qfalse;
if( signalcaught )
{
fprintf( stderr, "DOUBLE SIGNAL FAULT: Received signal %d, exiting...\n",
signal );
}
else
{
signalcaught = qtrue;
VM_Forced_Unload_Start();
#ifndef DEDICATED
CL_Shutdown(va("Received signal %d", signal), qtrue, qtrue);
#endif
SV_Shutdown(va("Received signal %d", signal) );
VM_Forced_Unload_Done();
}
if( signal == SIGTERM || signal == SIGINT )
Sys_Exit( 1 );
else
Sys_Exit( 2 );
}
/*
=================
main
=================
*/
int main( int argc, char **argv )
{
int i;
char commandLine[ MAX_STRING_CHARS ] = { 0 };
#ifndef DEDICATED
// SDL version check
// Compile time
# if !SDL_VERSION_ATLEAST(MINSDL_MAJOR,MINSDL_MINOR,MINSDL_PATCH)
# error A more recent version of SDL is required
# endif
// Run time
const SDL_version *ver = SDL_Linked_Version( );
#define MINSDL_VERSION \
XSTRING(MINSDL_MAJOR) "." \
XSTRING(MINSDL_MINOR) "." \
XSTRING(MINSDL_PATCH)
if( SDL_VERSIONNUM( ver->major, ver->minor, ver->patch ) <
SDL_VERSIONNUM( MINSDL_MAJOR, MINSDL_MINOR, MINSDL_PATCH ) )
{
Sys_Dialog( DT_ERROR, va( "SDL version " MINSDL_VERSION " or greater is required, "
"but only version %d.%d.%d was found. You may be able to obtain a more recent copy "
"from http://www.libsdl.org/.", ver->major, ver->minor, ver->patch ), "SDL Library Too Old" );
Sys_Exit( 1 );
}
#endif
Sys_PlatformInit( );
// Set the initial time base
Sys_Milliseconds( );
Sys_ParseArgs( argc, argv );
Sys_SetBinaryPath( Sys_Dirname( argv[ 0 ] ) );
Sys_SetDefaultInstallPath( DEFAULT_BASEDIR );
// Concatenate the command line for passing to Com_Init
for( i = 1; i < argc; i++ )
{
const qboolean containsSpaces = strchr(argv[i], ' ') != NULL;
if (containsSpaces)
Q_strcat( commandLine, sizeof( commandLine ), "\"" );
Q_strcat( commandLine, sizeof( commandLine ), argv[ i ] );
if (containsSpaces)
Q_strcat( commandLine, sizeof( commandLine ), "\"" );
Q_strcat( commandLine, sizeof( commandLine ), " " );
}
Com_Init( commandLine );
NET_Init( );
CON_Init( );
signal( SIGILL, Sys_SigHandler );
signal( SIGFPE, Sys_SigHandler );
signal( SIGSEGV, Sys_SigHandler );
signal( SIGTERM, Sys_SigHandler );
signal( SIGINT, Sys_SigHandler );
while( 1 )
{
IN_Frame( );
Com_Frame( );
}
return 0;
}
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