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cnq3/code/qcommon/common.cpp
myT a61c6f0e47 cvar and cmd auto-completion tweaks 
'h' indicates more help is available
'?' indicates a cvar is user-created
muted the Com_sprintf overflow warnings
2017-11-12 00:28:58 +01:00

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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
===========================================================================
*/
// common.c -- misc functions used in client and server
#include "q_shared.h"
#include "qcommon.h"
#include "common_help.h"
#include <setjmp.h>
#if (_MSC_VER >= 1400) // Visual C++ 2005 or later
#define MSVC_CPUID 1
#include <intrin.h>
#elif (__GNUC__)
#define GCC_CPUID 1
#include <cpuid.h>
#endif
#ifndef _WIN32
#include <netinet/in.h>
#include <sys/stat.h> // umask
#endif
#if defined(_MSC_VER)
#include "../win32/windows.h"
#endif
#define MIN_COMHUNKMEGS_DED 8 // for the dedicated server
#define MIN_COMHUNKMEGS 56
#define DEF_COMHUNKMEGS 64
#define DEF_COMZONEMEGS 32
static jmp_buf abortframe; // an ERR_DROP occured, exit the entire frame
static fileHandle_t logfile = 0;
static fileHandle_t com_journalFile = 0; // events are written here
fileHandle_t com_journalDataFile = 0; // config files are written here
cvar_t *com_viewlog = 0;
cvar_t *com_speeds = 0;
cvar_t *com_developer = 0;
cvar_t *com_dedicated = 0;
cvar_t *com_timescale = 0;
cvar_t *com_fixedtime = 0;
cvar_t *com_journal = 0;
cvar_t *com_maxfps = 0;
cvar_t *com_timedemo = 0;
cvar_t *com_sv_running = 0;
cvar_t *com_cl_running = 0;
cvar_t *com_logfile = 0; // 1 = buffer log, 2 = flush after each print
cvar_t *com_showtrace = 0;
cvar_t *com_version = 0;
cvar_t *cl_paused = 0;
cvar_t *sv_paused = 0;
cvar_t *cl_packetdelay = 0;
cvar_t *sv_packetdelay = 0;
#if defined(_WIN32) && defined(_DEBUG)
cvar_t *com_noErrorInterrupt;
#endif
static cvar_t *com_completionStyle; // 0 = legacy, 1 = ET-style
static cvar_t *con_history;
// com_speeds times
int time_game;
int time_frontend; // renderer frontend time
int time_backend; // renderer backend time
int com_frameTime;
int com_frameNumber;
qbool com_errorEntered;
qbool com_fullyInitialized;
static char com_errorMessage[MAXPRINTMSG];
static void Com_WriteConfig_f();
static void Com_CompleteWriteConfig_f( int startArg, int compArg );
extern void CIN_CloseAllVideos( void );
//============================================================================
static char *rd_buffer;
static int rd_buffersize;
static void (*rd_flush)( char *buffer );
void Com_BeginRedirect (char *buffer, int buffersize, void (*flush)( char *) )
{
if (!buffer || !buffersize || !flush)
return;
rd_buffer = buffer;
rd_buffersize = buffersize;
rd_flush = flush;
*rd_buffer = 0;
}
void Com_EndRedirect (void)
{
if ( rd_flush ) {
rd_flush(rd_buffer);
}
rd_buffer = NULL;
rd_buffersize = 0;
rd_flush = NULL;
}
///////////////////////////////////////////////////////////////
// client and server can both use these, and will do the appropriate things
// a raw string should NEVER be passed as fmt, because of "%f" type crashers
void QDECL Com_Printf( const char *fmt, ... )
{
char msg[MAXPRINTMSG];
va_list argptr;
va_start( argptr, fmt );
Q_vsnprintf( msg, sizeof(msg), fmt, argptr );
va_end( argptr );
if ( rd_buffer ) {
if ((strlen (msg) + strlen(rd_buffer)) > (rd_buffersize - 1)) {
rd_flush(rd_buffer);
*rd_buffer = 0;
}
Q_strcat(rd_buffer, rd_buffersize, msg);
return;
}
#ifndef DEDICATED
// echo to console if we're not a dedicated server
if ( com_dedicated && !com_dedicated->integer ) {
CL_ConsolePrint( msg );
}
#endif
// echo to dedicated console and early console
Sys_Print( msg );
if ( !com_logfile || !com_logfile->integer )
return;
static qbool opening_qconsole = qfalse;
// TTimo: only open the qconsole.log if the filesystem is in an initialized state
// also, avoid recursing in the qconsole.log opening (i.e. if fs_debug is on)
if ( !logfile && FS_Initialized() && !opening_qconsole) {
opening_qconsole = qtrue;
time_t aclock;
time( &aclock );
struct tm* newtime = localtime( &aclock );
logfile = FS_FOpenFileWrite( "qconsole.log" );
if (logfile)
{
Com_Printf( "logfile opened on %s\n", asctime( newtime ) );
if ( com_logfile->integer > 1 )
{
// force it to not buffer so we get valid
// data even if we are crashing
FS_ForceFlush(logfile);
}
}
else
{
Com_Printf("Opening qconsole.log failed!\n");
Cvar_SetValue("logfile", 0);
}
opening_qconsole = qfalse;
}
if ( logfile && FS_Initialized() ) {
FS_Write( msg, strlen(msg), logfile );
}
}
// a Com_Printf that only shows up if the "developer" cvar is set
void QDECL Com_DPrintf( const char *fmt, ...)
{
// don't confuse non-developers with techie stuff...
if ( !com_developer || !com_developer->integer )
return;
char msg[MAXPRINTMSG];
va_list argptr;
va_start( argptr, fmt );
Q_vsnprintf( msg, sizeof(msg), fmt, argptr );
Com_Printf( "%s", msg );
va_end( argptr );
}
void QDECL Com_Error( int level, const char* fmt, ... )
{
static char msg[MAXPRINTMSG];
va_list argptr;
va_start( argptr, fmt );
Q_vsnprintf( msg, sizeof(msg), fmt, argptr );
Com_ErrorExt( level, EXT_ERRMOD_ENGINE, qtrue, "%s", msg );
va_end(argptr);
}
void QDECL Com_ErrorExt( int code, int module, qbool realError, const char *fmt, ... )
{
static int lastErrorTime;
static int errorCount;
#ifndef DEDICATED
void CL_ForwardUIError( int level, int module, const char* error ); // client.h
#endif
// make sure we can get at our local stuff
FS_PureServerSetLoadedPaks( "" );
// if we are getting a solid stream of ERR_DROP, do an ERR_FATAL
int currentTime = Sys_Milliseconds();
if ( currentTime - lastErrorTime < 100 ) {
if ( ++errorCount > 3 ) {
code = ERR_FATAL;
}
} else {
errorCount = 0;
}
lastErrorTime = currentTime;
if ( com_errorEntered ) {
Sys_Error( "recursive error after: %s", com_errorMessage );
}
com_errorEntered = qtrue;
va_list argptr;
va_start( argptr, fmt );
vsprintf( com_errorMessage, fmt, argptr );
va_end( argptr );
#if defined(_WIN32) && defined(_DEBUG)
if ( code != ERR_DISCONNECT && code != ERR_NEED_CD ) {
if ((!com_noErrorInterrupt || !com_noErrorInterrupt->integer) && IsDebuggerPresent()) {
__debugbreak();
}
}
#endif
if ( code != ERR_DISCONNECT && code != ERR_NEED_CD ) {
Cvar_Set("com_errorMessage", com_errorMessage);
}
if ( code == ERR_SERVERDISCONNECT ) {
#ifndef DEDICATED
CL_Disconnect( qtrue );
CL_FlushMemory();
if ( realError )
CL_ForwardUIError( EXT_ERRLEV_SVDISC, module, com_errorMessage );
#endif
com_errorEntered = qfalse;
longjmp (abortframe, -1);
} else if ( code == ERR_DROP || code == ERR_DISCONNECT ) {
if (realError)
Com_Printf( "********************\nERROR: %s\n********************\n", com_errorMessage );
else
Com_Printf( "ERROR: %s\n", com_errorMessage );
SV_Shutdown( va("Server crashed: %s", com_errorMessage) );
#ifndef DEDICATED
CL_Disconnect( qtrue );
CL_FlushMemory(); // shuts down the VMs and starts them back up
if ( realError )
CL_ForwardUIError( code == ERR_DROP ? EXT_ERRLEV_DROP : EXT_ERRLEV_DISC, module, com_errorMessage );
#endif
com_errorEntered = qfalse;
longjmp (abortframe, -1);
} else if ( code == ERR_NEED_CD ) {
SV_Shutdown( "Server didn't have CD" );
#ifndef DEDICATED
if ( com_cl_running && com_cl_running->integer ) {
CL_Disconnect( qtrue );
CL_FlushMemory();
com_errorEntered = qfalse;
CL_CDDialog();
} else {
Com_Printf("Server didn't have CD\n" );
}
#endif
longjmp (abortframe, -1);
} else {
#ifndef DEDICATED
CL_Shutdown();
#endif
SV_Shutdown( va("Server fatal crashed: %s", com_errorMessage) );
}
Com_Shutdown();
Sys_Error( "%s", com_errorMessage );
}
void Com_Quit( int status )
{
Sys_SaveHistory();
// don't try to shutdown if we are in a recursive error
if ( !com_errorEntered ) {
SV_Shutdown( "Server quit" );
#ifndef DEDICATED
CL_Shutdown();
#endif
Com_Shutdown();
FS_Shutdown( qtrue );
}
Sys_Quit( status );
}
static void Com_Quit_f( void )
{
Com_Quit( 0 );
}
///////////////////////////////////////////////////////////////
/*
COMMAND LINE FUNCTIONS
+ characters seperate the commandLine string into multiple console
command lines.
All of these are valid:
quake3 +set test blah +map test
quake3 set test blah+map test
quake3 set test blah + map test
*/
#define MAX_CONSOLE_LINES 32
static int com_numConsoleLines;
static char* com_consoleLines[MAX_CONSOLE_LINES];
// break the process args up into multiple console lines
static void Com_ParseCommandLine( char* commandLine )
{
int inq = 0;
com_consoleLines[0] = commandLine;
com_numConsoleLines = 1;
while ( *commandLine ) {
if (*commandLine == '"') {
inq = !inq;
}
// look for a + separating character
// if commandLine came from a file, we might have real line separators
if ( (*commandLine == '+' && !inq) || *commandLine == '\n' || *commandLine == '\r' ) {
if ( com_numConsoleLines == MAX_CONSOLE_LINES ) {
return;
}
*commandLine++ = 0; // terminate the PREVIOUS command
com_consoleLines[com_numConsoleLines++] = commandLine;
}
++commandLine;
}
}
// check for "+safe" on the command line, which will skip loading of q3config.cfg
qbool Com_SafeMode()
{
for (int i = 0; i < com_numConsoleLines; ++i) {
Cmd_TokenizeString( com_consoleLines[i] );
if ( !Q_stricmp( Cmd_Argv(0), "safe" ) || !Q_stricmp( Cmd_Argv(0), "cvar_restart" ) ) {
com_consoleLines[i][0] = 0;
return qtrue;
}
}
return qfalse;
}
/*
Searches for command line parameters that are set commands.
If match is not NULL, only that cvar will be looked for.
That is necessary because cddir and basedir need to be set
before the filesystem is started, but all other sets should
be after execing the config and default.
*/
void Com_StartupVariable( const char *match )
{
for (int i = 0; i < com_numConsoleLines; ++i) {
Cmd_TokenizeString( com_consoleLines[i] );
if ( strcmp( Cmd_Argv(0), "set" ) )
continue;
const char* s = Cmd_Argv(1);
if ( !match || !strcmp( s, match ) ) {
Cvar_Set( s, Cmd_Argv(2) );
cvar_t* cv = Cvar_Get( s, "", 0 );
cv->flags |= CVAR_USER_CREATED;
}
}
}
/*
Adds command line parameters as script statements
Commands are separated by + signs
Returns qtrue if any late commands were added
which will keep the fucking annoying cins from playing
*/
static qbool Com_AddStartupCommands()
{
qbool added = qfalse;
// quote every token, so args with semicolons can work
for (int i = 0; i < com_numConsoleLines; ++i) {
if ( !com_consoleLines[i] || !com_consoleLines[i][0] ) {
continue;
}
// set commands won't override menu startup
if ( Q_stricmpn( com_consoleLines[i], "set", 3 ) ) {
added = qtrue;
}
Cbuf_AddText( com_consoleLines[i] );
Cbuf_AddText( "\n" );
}
return added;
}
//============================================================================
void Info_Print( const char *s ) {
char key[512];
char value[512];
char *o;
int l;
if (*s == '\\')
s++;
while (*s)
{
o = key;
while (*s && *s != '\\')
*o++ = *s++;
l = o - key;
if (l < 20)
{
Com_Memset (o, ' ', 20-l);
key[20] = 0;
}
else
*o = 0;
Com_Printf ("%s", key);
if (!*s)
{
Com_Printf ("MISSING VALUE\n");
return;
}
o = value;
s++;
while (*s && *s != '\\')
*o++ = *s++;
*o = 0;
if (*s)
s++;
Com_Printf ("%s\n", value);
}
}
static const char* Com_StringContains( const char* str1, const char* str2)
{
int i, j;
int len = strlen(str1) - strlen(str2);
for (i = 0; i <= len; i++, str1++) {
for (j = 0; str2[j]; j++) {
if (toupper(str1[j]) != toupper(str2[j])) {
break;
}
}
if (!str2[j]) {
return str1;
}
}
return NULL;
}
int Com_Filter( const char* filter, const char* name )
{
char buf[MAX_TOKEN_CHARS];
const char* ptr;
int i, found;
while (*filter) {
if (*filter == '*') {
filter++;
for (i = 0; *filter; i++) {
if (*filter == '*' || *filter == '?') break;
buf[i] = *filter;
filter++;
}
buf[i] = '\0';
if (buf[0]) {
ptr = Com_StringContains(name, buf);
if (!ptr) return qfalse;
name = ptr + strlen(buf);
}
}
else if (*filter == '?') {
filter++;
name++;
}
else if (*filter == '[' && *(filter+1) == '[') {
filter++;
}
else if (*filter == '[') {
filter++;
found = qfalse;
while(*filter && !found) {
if (*filter == ']' && *(filter+1) != ']') break;
if (*(filter+1) == '-' && *(filter+2) && (*(filter+2) != ']' || *(filter+3) == ']')) {
if (toupper(*name) >= toupper(*filter) && toupper(*name) <= toupper(*(filter+2)))
found = qtrue;
filter += 3;
}
else {
if (toupper(*filter) == toupper(*name))
found = qtrue;
filter++;
}
}
if (!found) return qfalse;
while(*filter) {
if (*filter == ']' && *(filter+1) != ']') break;
filter++;
}
filter++;
name++;
}
else {
if (toupper(*filter) != toupper(*name))
return qfalse;
filter++;
name++;
}
}
return qtrue;
}
int Com_FilterPath( const char* filter, const char* name )
{
int i;
char new_filter[MAX_QPATH];
char new_name[MAX_QPATH];
for (i = 0; i < MAX_QPATH-1 && filter[i]; i++) {
if ( filter[i] == '\\' || filter[i] == ':' ) {
new_filter[i] = '/';
}
else {
new_filter[i] = filter[i];
}
}
new_filter[i] = '\0';
for (i = 0; i < MAX_QPATH-1 && name[i]; i++) {
if ( name[i] == '\\' || name[i] == ':' ) {
new_name[i] = '/';
}
else {
new_name[i] = name[i];
}
}
new_name[i] = '\0';
return Com_Filter( new_filter, new_name );
}
/*
============
Com_HashKey
============
*/
int Com_HashKey(char *string, int maxlen) {
int register hash, i;
hash = 0;
for (i = 0; i < maxlen && string[i] != '\0'; i++) {
hash += string[i] * (119 + i);
}
hash = (hash ^ (hash >> 10) ^ (hash >> 20));
return hash;
}
int Com_RealTime( qtime_t* qtime )
{
time_t t = time(NULL);
if (!qtime)
return t;
const struct tm* tms = localtime(&t);
if (tms) {
qtime->tm_sec = tms->tm_sec;
qtime->tm_min = tms->tm_min;
qtime->tm_hour = tms->tm_hour;
qtime->tm_mday = tms->tm_mday;
qtime->tm_mon = tms->tm_mon;
qtime->tm_year = tms->tm_year;
qtime->tm_wday = tms->tm_wday;
qtime->tm_yday = tms->tm_yday;
qtime->tm_isdst = tms->tm_isdst;
}
return t;
}
/*
==============================================================================
ZONE MEMORY ALLOCATION
There is never any space between memblocks, and there will never be two
contiguous free memblocks.
The rover can be left pointing at a non-empty block
The zone calls are pretty much only used for small strings and structures,
all big things are allocated on the hunk.
==============================================================================
*/
#define ZONEID 0x1d4a11
#define MINFRAGMENT 64
typedef struct zonedebug_s {
char *label;
char *file;
int line;
int allocSize;
} zonedebug_t;
typedef struct memblock_s {
int size; // including the header and possibly tiny fragments
int tag; // a tag of 0 is a free block
struct memblock_s *next, *prev;
int id; // should be ZONEID
#ifdef ZONE_DEBUG
zonedebug_t d;
#endif
} memblock_t;
typedef struct {
int size; // total bytes malloced, including header
int used; // total bytes used
memblock_t blocklist; // start / end cap for linked list
memblock_t *rover;
} memzone_t;
// main zone for all "dynamic" memory allocation
static memzone_t* mainzone = NULL;
// we also have a small zone for small allocations that would only
// fragment the main zone (think of cvar and cmd strings)
static memzone_t* smallzone = NULL;
static void Z_ClearZone( memzone_t* zone, int size )
{
memblock_t* block;
// set the entire zone to one free block
zone->blocklist.next = zone->blocklist.prev = block =
(memblock_t *)( (byte *)zone + sizeof(memzone_t) );
zone->blocklist.tag = 1; // in use block
zone->blocklist.id = 0;
zone->blocklist.size = 0;
zone->rover = block;
zone->size = size;
zone->used = 0;
block->prev = block->next = &zone->blocklist;
block->tag = 0; // free block
block->id = ZONEID;
block->size = size - sizeof(memzone_t);
}
static int Z_AvailableZoneMemory( const memzone_t* zone )
{
return zone->size - zone->used;
}
int Z_AvailableMemory( void )
{
return Z_AvailableZoneMemory( mainzone );
}
void Z_Free( void* ptr )
{
if (!ptr) {
Com_Error( ERR_DROP, "Z_Free: NULL pointer" );
}
memblock_t* block = (memblock_t*)((byte*)ptr - sizeof(memblock_t));
if (block->id != ZONEID) {
Com_Error( ERR_FATAL, "Z_Free: freed a pointer without ZONEID" );
}
if (block->tag == 0) {
Com_Error( ERR_FATAL, "Z_Free: freed a freed pointer" );
}
// if static memory
if (block->tag == TAG_STATIC) {
return;
}
// check the memory trash tester
if ( *(int *)((byte *)block + block->size - 4 ) != ZONEID ) {
Com_Error( ERR_FATAL, "Z_Free: memory block wrote past end" );
}
memzone_t* zone = (block->tag == TAG_SMALL) ? smallzone : mainzone;
zone->used -= block->size;
// set the block to something that should cause problems
// if it is referenced...
Com_Memset( ptr, 0xaa, block->size - sizeof( *block ) );
block->tag = 0; // mark as free
memblock_t* other = block->prev;
if (!other->tag) {
// merge with previous free block
other->size += block->size;
other->next = block->next;
other->next->prev = other;
if (block == zone->rover) {
zone->rover = other;
}
block = other;
}
zone->rover = block;
other = block->next;
if ( !other->tag ) {
// merge the next free block onto the end
block->size += other->size;
block->next = other->next;
block->next->prev = block;
if (other == zone->rover) {
zone->rover = block;
}
}
}
#ifdef ZONE_DEBUG
static void Z_LogZoneHeap( const memzone_t* zone, const char* name )
{
char dump[32], *ptr;
int i, j;
memblock_t *block;
char buf[4096];
int size, allocSize, numBlocks;
if (!logfile || !FS_Initialized())
return;
size = allocSize = numBlocks = 0;
Com_sprintf(buf, sizeof(buf), "\r\n================\r\n%s log\r\n================\r\n", name);
FS_Write(buf, strlen(buf), logfile);
for (block = zone->blocklist.next ; block->next != &zone->blocklist; block = block->next) {
if (block->tag) {
ptr = ((char *) block) + sizeof(memblock_t);
j = 0;
for (i = 0; i < 20 && i < block->d.allocSize; i++) {
if (ptr[i] >= 32 && ptr[i] < 127) {
dump[j++] = ptr[i];
}
else {
dump[j++] = '_';
}
}
dump[j] = '\0';
Com_sprintf(buf, sizeof(buf), "size = %8d: %s, line: %d (%s) [%s]\r\n", block->d.allocSize, block->d.file, block->d.line, block->d.label, dump);
FS_Write(buf, strlen(buf), logfile);
allocSize += block->d.allocSize;
size += block->size;
numBlocks++;
}
}
// subtract debug memory
size -= numBlocks * sizeof(zonedebug_t);
allocSize = numBlocks * sizeof(memblock_t); // + 32 bit alignment
Com_sprintf(buf, sizeof(buf), "%d %s memory in %d blocks\r\n", size, name, numBlocks);
FS_Write(buf, strlen(buf), logfile);
Com_sprintf(buf, sizeof(buf), "%d %s memory overhead\r\n", size - allocSize, name);
FS_Write(buf, strlen(buf), logfile);
}
static void Z_LogHeap()
{
Z_LogZoneHeap( mainzone, "MAIN" );
Z_LogZoneHeap( smallzone, "SMALL" );
}
#endif
/*
================
Z_TagMalloc
================
*/
#ifdef ZONE_DEBUG
void *Z_TagMallocDebug( int size, int tag, char *label, char *file, int line ) {
#else
void *Z_TagMalloc( int size, int tag ) {
#endif
int extra, allocSize;
memblock_t *start, *rover, *base;
memzone_t *zone;
if (!tag) {
Com_Error( ERR_FATAL, "Z_TagMalloc: tried to use a 0 tag" );
}
if ( tag == TAG_SMALL ) {
zone = smallzone;
}
else {
zone = mainzone;
}
allocSize = size;
//
// scan through the block list looking for the first free block
// of sufficient size
//
size += sizeof(memblock_t); // account for size of block header
size += 4; // space for memory trash tester
size = PAD(size, sizeof(intptr_t)); // align to 32/64 bit boundary
base = rover = zone->rover;
start = base->prev;
do {
if (rover == start) {
#ifdef ZONE_DEBUG
Z_LogHeap();
#endif
// scaned all the way around the list
Com_Error( ERR_FATAL, "Z_Malloc: failed on allocation of %i bytes from the %s zone",
size, zone == smallzone ? "small" : "main");
return NULL;
}
if (rover->tag) {
base = rover = rover->next;
} else {
rover = rover->next;
}
} while (base->tag || base->size < size);
//
// found a block big enough
//
extra = base->size - size;
if (extra > MINFRAGMENT) {
// there will be a free fragment after the allocated block
memblock_t* p = (memblock_t *) ((byte *)base + size );
p->size = extra;
p->tag = 0; // free block
p->prev = base;
p->id = ZONEID;
p->next = base->next;
p->next->prev = p;
base->next = p;
base->size = size;
}
base->tag = tag; // no longer a free block
zone->rover = base->next; // next allocation will start looking here
zone->used += base->size; //
base->id = ZONEID;
#ifdef ZONE_DEBUG
base->d.label = label;
base->d.file = file;
base->d.line = line;
base->d.allocSize = allocSize;
#endif
// marker for memory trash testing
*(int *)((byte *)base + base->size - 4) = ZONEID;
return (void *) ((byte *)base + sizeof(memblock_t));
}
static void Z_CheckHeap()
{
const memblock_t* block;
for (block = mainzone->blocklist.next ; ; block = block->next) {
if (block->next == &mainzone->blocklist) {
break; // all blocks have been hit
}
if ( (byte *)block + block->size != (byte *)block->next)
Com_Error( ERR_FATAL, "Z_CheckHeap: block size does not touch the next block\n" );
if ( block->next->prev != block) {
Com_Error( ERR_FATAL, "Z_CheckHeap: next block doesn't have proper back link\n" );
}
if ( !block->tag && !block->next->tag ) {
Com_Error( ERR_FATAL, "Z_CheckHeap: two consecutive free blocks\n" );
}
}
}
#ifdef ZONE_DEBUG
void *Z_MallocDebug( int size, char *label, char *file, int line )
{
Z_CheckHeap();
void* buf = Z_TagMallocDebug( size, TAG_GENERAL, label, file, line );
#else
void *Z_Malloc( int size )
{
void* buf = Z_TagMalloc( size, TAG_GENERAL );
#endif
Com_Memset( buf, 0, size );
return buf;
}
#ifdef ZONE_DEBUG
void *S_MallocDebug( int size, char *label, char *file, int line )
{
return Z_TagMallocDebug( size, TAG_SMALL, label, file, line );
}
#else
void *S_Malloc( int size )
{
return Z_TagMalloc( size, TAG_SMALL );
}
#endif
// static mem blocks to reduce a lot of small zone overhead
typedef struct memstatic_s {
memblock_t b;
byte mem[2];
} memstatic_t;
static memstatic_t emptystring =
{ {(sizeof(memblock_t)+2 + 3) & ~3, TAG_STATIC, NULL, NULL, ZONEID}, {'\0', '\0'} };
static memstatic_t numberstring[] = {
{ {(sizeof(memstatic_t) + 3) & ~3, TAG_STATIC, NULL, NULL, ZONEID}, {'0', '\0'} },
{ {(sizeof(memstatic_t) + 3) & ~3, TAG_STATIC, NULL, NULL, ZONEID}, {'1', '\0'} },
{ {(sizeof(memstatic_t) + 3) & ~3, TAG_STATIC, NULL, NULL, ZONEID}, {'2', '\0'} },
{ {(sizeof(memstatic_t) + 3) & ~3, TAG_STATIC, NULL, NULL, ZONEID}, {'3', '\0'} },
{ {(sizeof(memstatic_t) + 3) & ~3, TAG_STATIC, NULL, NULL, ZONEID}, {'4', '\0'} },
{ {(sizeof(memstatic_t) + 3) & ~3, TAG_STATIC, NULL, NULL, ZONEID}, {'5', '\0'} },
{ {(sizeof(memstatic_t) + 3) & ~3, TAG_STATIC, NULL, NULL, ZONEID}, {'6', '\0'} },
{ {(sizeof(memstatic_t) + 3) & ~3, TAG_STATIC, NULL, NULL, ZONEID}, {'7', '\0'} },
{ {(sizeof(memstatic_t) + 3) & ~3, TAG_STATIC, NULL, NULL, ZONEID}, {'8', '\0'} },
{ {(sizeof(memstatic_t) + 3) & ~3, TAG_STATIC, NULL, NULL, ZONEID}, {'9', '\0'} }
};
/*
========================
CopyString
NOTE: never write over the memory CopyString returns because
memory from a memstatic_t might be returned
========================
*/
char* CopyString( const char *in )
{
if (!in[0]) {
return ((char *)&emptystring) + sizeof(memblock_t);
}
else if (!in[1]) {
if (in[0] >= '0' && in[0] <= '9') {
return ((char *)&numberstring[in[0]-'0']) + sizeof(memblock_t);
}
}
char* out = (char*)S_Malloc(strlen(in)+1);
strcpy(out, in);
return out;
}
/*
==============================================================================
Goals:
reproducable without history effects -- no out of memory errors on weird map to map changes
allow restarting of the client without fragmentation
minimize total pages in use at run time
minimize total pages needed during load time
Single block of memory with stack allocators coming from both ends towards the middle.
One side is designated the temporary memory allocator.
Temporary memory can be allocated and freed in any order.
A highwater mark is kept of the most in use at any time.
When there is no temporary memory allocated, the permanent and temp sides
can be switched, allowing the already touched temp memory to be used for
permanent storage.
Temp memory must never be allocated on two ends at once, or fragmentation
could occur.
If we have any in-use temp memory, additional temp allocations must come from
that side.
If not, we can choose to make either side the new temp side and push future
permanent allocations to the other side. Permanent allocations should be
kept on the side that has the current greatest wasted highwater mark.
==============================================================================
*/
typedef unsigned int hmagic;
static const hmagic HUNK_MAGIC_INUSE = 0x89537892;
static const hmagic HUNK_MAGIC_FREED = 0x89537893;
typedef struct {
hmagic magic;
int size;
} hunkHeader_t;
typedef struct {
int mark;
int permanent;
int temp;
int tempHighwater;
} hunkUsed_t;
static hunkUsed_t hunk_low = {0}, hunk_high = {0};
static hunkUsed_t *hunk_permanent = &hunk_low, *hunk_temp = &hunk_high;
static byte *s_hunkData = NULL;
static int s_hunkTotal = 0;
static int s_zoneTotal = 0;
#ifdef HUNK_DEBUG
typedef struct hunkblock_s {
int size;
byte printed;
struct hunkblock_s *next;
char *label;
char *file;
int line;
} hunkblock_t;
static hunkblock_t* hunkblocks = NULL;
#endif
static void Com_Meminfo_f( void )
{
const memblock_t* block;
int zoneBytes = 0;
int zoneBlocks = 0;
int botlibBytes = 0;
int rendererBytes = 0;
for (block = mainzone->blocklist.next ; ; block = block->next) {
if ( Cmd_Argc() != 1 ) {
Com_Printf ("block:%p size:%7i tag:%3i\n",
block, block->size, block->tag);
}
if ( block->tag ) {
zoneBytes += block->size;
zoneBlocks++;
if ( block->tag == TAG_BOTLIB ) {
botlibBytes += block->size;
} else if ( block->tag == TAG_RENDERER ) {
rendererBytes += block->size;
}
}
if (block->next == &mainzone->blocklist) {
break; // all blocks have been hit
}
if ( (byte *)block + block->size != (byte *)block->next) {
Com_Printf ("ERROR: block size does not touch the next block\n");
}
if ( block->next->prev != block) {
Com_Printf ("ERROR: next block doesn't have proper back link\n");
}
if ( !block->tag && !block->next->tag ) {
Com_Printf ("ERROR: two consecutive free blocks\n");
}
}
int smallZoneBytes = 0;
int smallZoneBlocks = 0;
for (block = smallzone->blocklist.next ; ; block = block->next) {
if ( block->tag ) {
smallZoneBytes += block->size;
smallZoneBlocks++;
}
if (block->next == &smallzone->blocklist) {
break; // all blocks have been hit
}
}
Com_Printf( "%8i bytes total hunk\n", s_hunkTotal );
Com_Printf( "%8i bytes total zone\n", s_zoneTotal );
Com_Printf( "\n" );
Com_Printf( "%8i low mark\n", hunk_low.mark );
Com_Printf( "%8i low permanent\n", hunk_low.permanent );
if ( hunk_low.temp != hunk_low.permanent ) {
Com_Printf( "%8i low temp\n", hunk_low.temp );
}
Com_Printf( "%8i low tempHighwater\n", hunk_low.tempHighwater );
Com_Printf( "\n" );
Com_Printf( "%8i high mark\n", hunk_high.mark );
Com_Printf( "%8i high permanent\n", hunk_high.permanent );
if ( hunk_high.temp != hunk_high.permanent ) {
Com_Printf( "%8i high temp\n", hunk_high.temp );
}
Com_Printf( "%8i high tempHighwater\n", hunk_high.tempHighwater );
Com_Printf( "\n" );
Com_Printf( "%8i total hunk in use\n", hunk_low.permanent + hunk_high.permanent );
int unused = 0;
if ( hunk_low.tempHighwater > hunk_low.permanent ) {
unused += hunk_low.tempHighwater - hunk_low.permanent;
}
if ( hunk_high.tempHighwater > hunk_high.permanent ) {
unused += hunk_high.tempHighwater - hunk_high.permanent;
}
Com_Printf( "%8i unused highwater\n", unused );
Com_Printf( "\n" );
Com_Printf( "%8i bytes in %i zone blocks\n", zoneBytes, zoneBlocks );
Com_Printf( " %8i bytes in dynamic botlib\n", botlibBytes );
Com_Printf( " %8i bytes in dynamic renderer\n", rendererBytes );
Com_Printf( " %8i bytes in dynamic other\n", zoneBytes - ( botlibBytes + rendererBytes ) );
Com_Printf( " %8i bytes in small Zone memory\n", smallZoneBytes );
}
// touch all known used data to make sure it is paged in
void Com_TouchMemory()
{
int i, j;
int sum = 0;
const memblock_t* block;
Z_CheckHeap();
int start = Sys_Milliseconds();
j = hunk_low.permanent >> 2;
for ( i = 0 ; i < j ; i+=64 ) { // only need to touch each page
sum += ((int *)s_hunkData)[i];
}
i = ( s_hunkTotal - hunk_high.permanent ) >> 2;
j = hunk_high.permanent >> 2;
for ( ; i < j ; i+=64 ) { // only need to touch each page
sum += ((int *)s_hunkData)[i];
}
for (block = mainzone->blocklist.next ; ; block = block->next) {
if ( block->tag ) {
j = block->size >> 2;
for ( i = 0 ; i < j ; i+=64 ) { // only need to touch each page
sum += ((int *)block)[i];
}
}
if ( block->next == &mainzone->blocklist ) {
break; // all blocks have been hit
}
}
int end = Sys_Milliseconds();
Com_Printf( "Com_TouchMemory: %i msec\n", end - start );
}
static void Com_InitSmallZoneMemory()
{
const int s_smallZoneTotal = 512 * 1024;
smallzone = (memzone_t*)calloc( s_smallZoneTotal, 1 );
if ( !smallzone )
Com_Error( ERR_FATAL, "Small zone data failed to allocate %1.1f megs", (float)s_smallZoneTotal / (1024*1024) );
Z_ClearZone( smallzone, s_smallZoneTotal );
}
static void Com_InitZoneMemory()
{
//FIXME: 05/01/06 com_zoneMegs is useless right now as neither q3config.cfg nor
// Com_StartupVariable have been executed by this point. The net result is that
// s_zoneTotal will always be set to the default value.
// myT: removed com_zoneMegs for now
// allocate the random block zone
s_zoneTotal = 1024 * 1024 * DEF_COMZONEMEGS;
mainzone = (memzone_t*)calloc( s_zoneTotal, 1 );
if ( !mainzone )
Com_Error( ERR_FATAL, "Zone data failed to allocate %i megs", s_zoneTotal / (1024*1024) );
Z_ClearZone( mainzone, s_zoneTotal );
}
#ifdef HUNK_DEBUG
static void Hunk_Log( void )
{
char buf[4096];
const hunkblock_t* block;
int size = 0, numBlocks = 0;
if (!logfile || !FS_Initialized())
return;
Com_sprintf(buf, sizeof(buf), "\r\n================\r\nHunk log\r\n================\r\n");
FS_Write(buf, strlen(buf), logfile);
for (block = hunkblocks ; block; block = block->next) {
Com_sprintf(buf, sizeof(buf), "size = %8d: %s, line: %d (%s)\r\n", block->size, block->file, block->line, block->label);
FS_Write(buf, strlen(buf), logfile);
size += block->size;
numBlocks++;
}
Com_sprintf(buf, sizeof(buf), "%d Hunk memory\r\n", size);
FS_Write(buf, strlen(buf), logfile);
Com_sprintf(buf, sizeof(buf), "%d hunk blocks\r\n", numBlocks);
FS_Write(buf, strlen(buf), logfile);
}
void Hunk_SmallLog( void )
{
hunkblock_t *block, *block2;
char buf[4096];
int size, locsize, numBlocks;
if (!logfile || !FS_Initialized())
return;
for (block = hunkblocks ; block; block = block->next) {
block->printed = qfalse;
}
size = 0;
numBlocks = 0;
Com_sprintf(buf, sizeof(buf), "\r\n================\r\nHunk Small log\r\n================\r\n");
FS_Write(buf, strlen(buf), logfile);
for (block = hunkblocks; block; block = block->next) {
if (block->printed) {
continue;
}
locsize = block->size;
for (block2 = block->next; block2; block2 = block2->next) {
if (block->line != block2->line) {
continue;
}
if (Q_stricmp(block->file, block2->file)) {
continue;
}
size += block2->size;
locsize += block2->size;
block2->printed = qtrue;
}
Com_sprintf(buf, sizeof(buf), "size = %8d: %s, line: %d (%s)\r\n", locsize, block->file, block->line, block->label);
FS_Write(buf, strlen(buf), logfile);
size += block->size;
numBlocks++;
}
Com_sprintf(buf, sizeof(buf), "%d Hunk memory\r\n", size);
FS_Write(buf, strlen(buf), logfile);
Com_sprintf(buf, sizeof(buf), "%d hunk blocks\r\n", numBlocks);
FS_Write(buf, strlen(buf), logfile);
}
#endif
static const cmdTableItem_t hunk_cmds[] =
{
{ "meminfo", Com_Meminfo_f, NULL, "prints memory allocation info" },
#ifdef ZONE_DEBUG
{ "zonelog", Z_LogHeap },
#endif
#ifdef HUNK_DEBUG
{ "hunklog", Hunk_Log },
{ "hunksmalllog", Hunk_SmallLog }
#endif
};
static void Com_InitHunkMemory()
{
// make sure the file system has allocated and "not" freed any temp blocks
// this allows the config and product id files ( journal files too ) to be loaded
// by the file system without redundant routines in the FS utilizing different memory systems
if (FS_LoadStack() != 0) {
Com_Error( ERR_FATAL, "Hunk initialization failed. File system load stack not zero" );
}
// allocate the stack based hunk allocator
const cvar_t* cv = Cvar_Get( "com_hunkMegs", XSTRING(DEF_COMHUNKMEGS), CVAR_LATCH | CVAR_ARCHIVE );
if (com_dedicated && com_dedicated->integer)
Cvar_SetRange( "com_hunkMegs", CVART_INTEGER, XSTRING(MIN_COMHUNKMEGS_DED), "256" );
else
Cvar_SetRange( "com_hunkMegs", CVART_INTEGER, XSTRING(MIN_COMHUNKMEGS), "256" );
int nMinAlloc;
const char* s;
if (com_dedicated && com_dedicated->integer) {
nMinAlloc = MIN_COMHUNKMEGS_DED;
s = "Minimum com_hunkMegs for a dedicated server is %i, allocating %i megs.\n";
}
else {
nMinAlloc = MIN_COMHUNKMEGS;
s = "Minimum com_hunkMegs is %i, allocating %i megs.\n";
}
if ( cv->integer < nMinAlloc ) {
s_hunkTotal = 1024 * 1024 * nMinAlloc;
Com_Printf( s, nMinAlloc, s_hunkTotal / (1024 * 1024) );
} else {
s_hunkTotal = cv->integer * 1024 * 1024;
}
#if defined( _MSC_VER ) && defined( _DEBUG ) && defined( idx64 )
// try to allocate at the highest possible address range to help detect errors during development
s_hunkData = (byte*)VirtualAlloc( NULL, ( s_hunkTotal + 4095 ) & ( ~4095 ), MEM_COMMIT | MEM_TOP_DOWN, PAGE_READWRITE );
Cvar_Get( "sys_hunkBaseAddress", va( "%p", s_hunkData ), CVAR_ROM );
#else
s_hunkData = (byte*)calloc( s_hunkTotal + 63, 1 );
#endif
if ( !s_hunkData ) {
Com_Error( ERR_FATAL, "Hunk data failed to allocate %i megs", s_hunkTotal / (1024*1024) );
}
// cacheline align
s_hunkData = (byte *) ( ( (intptr_t)s_hunkData + 63 ) & ( ~63 ) );
Hunk_Clear();
Cmd_RegisterArray( hunk_cmds, MODULE_COMMON );
}
int Hunk_MemoryRemaining()
{
int low = hunk_low.permanent > hunk_low.temp ? hunk_low.permanent : hunk_low.temp;
int high = hunk_high.permanent > hunk_high.temp ? hunk_high.permanent : hunk_high.temp;
return s_hunkTotal - ( low + high );
}
// the server calls this after the level and game VM have been loaded
void Hunk_SetMark()
{
hunk_low.mark = hunk_low.permanent;
hunk_high.mark = hunk_high.permanent;
}
// the client calls this before starting a vid_restart or snd_restart
void Hunk_ClearToMark()
{
hunk_low.permanent = hunk_low.temp = hunk_low.mark;
hunk_high.permanent = hunk_high.temp = hunk_high.mark;
}
// the bot code uses this for no good reason FAICT
qbool Hunk_CheckMark()
{
return ( hunk_low.mark || hunk_high.mark );
}
// the server calls this before shutting down or loading a new map
void Hunk_Clear()
{
#ifndef DEDICATED
extern void CL_ShutdownCGame();
extern void CL_ShutdownUI();
#endif
extern void SV_ShutdownGameProgs();
#ifndef DEDICATED
CL_ShutdownCGame();
CL_ShutdownUI();
#endif
SV_ShutdownGameProgs();
#ifndef DEDICATED
CIN_CloseAllVideos();
#endif
hunk_low.mark = 0;
hunk_low.permanent = 0;
hunk_low.temp = 0;
hunk_low.tempHighwater = 0;
hunk_high.mark = 0;
hunk_high.permanent = 0;
hunk_high.temp = 0;
hunk_high.tempHighwater = 0;
hunk_permanent = &hunk_low;
hunk_temp = &hunk_high;
VM_Clear();
#ifdef HUNK_DEBUG
hunkblocks = NULL;
#endif
}
static void Hunk_SwapBanks()
{
// can't swap banks if there is any temp already allocated
if ( hunk_temp->temp != hunk_temp->permanent ) {
return;
}
// if we have a larger highwater mark on this side, start making
// our permanent allocations here and use the other side for temp
if ( hunk_temp->tempHighwater - hunk_temp->permanent >
hunk_permanent->tempHighwater - hunk_permanent->permanent ) {
hunkUsed_t* swap = hunk_temp;
hunk_temp = hunk_permanent;
hunk_permanent = swap;
}
}
// allocate permanent (until the hunk is cleared) memory
#ifdef HUNK_DEBUG
void *Hunk_AllocDebug( int size, ha_pref preference, char *label, char *file, int line )
#else
void *Hunk_Alloc( int size, ha_pref preference )
#endif
{
if (!s_hunkData) {
Com_Error( ERR_FATAL, "Hunk_Alloc: Hunk memory system not initialized" );
}
// can't do preference if there is any temp allocated
if (preference == h_dontcare || hunk_temp->temp != hunk_temp->permanent) {
Hunk_SwapBanks();
} else {
if (preference == h_low && hunk_permanent != &hunk_low) {
Hunk_SwapBanks();
} else if (preference == h_high && hunk_permanent != &hunk_high) {
Hunk_SwapBanks();
}
}
#ifdef HUNK_DEBUG
size += sizeof(hunkblock_t);
#endif
// round to cacheline
size = ( size + 63 ) & ( ~63 );
if ( hunk_low.temp + hunk_high.temp + size > s_hunkTotal ) {
#ifdef HUNK_DEBUG
Hunk_Log();
Hunk_SmallLog();
#endif
Com_Error( ERR_DROP, "Hunk_Alloc failed on %i", size );
}
void* buf;
if ( hunk_permanent == &hunk_low ) {
buf = (void *)(s_hunkData + hunk_permanent->permanent);
hunk_permanent->permanent += size;
} else {
hunk_permanent->permanent += size;
buf = (void *)(s_hunkData + s_hunkTotal - hunk_permanent->permanent );
}
hunk_permanent->temp = hunk_permanent->permanent;
Com_Memset( buf, 0, size );
#ifdef HUNK_DEBUG
{
hunkblock_t* block = (hunkblock_t*)buf;
block->size = size - sizeof(hunkblock_t);
block->file = file;
block->label = label;
block->line = line;
block->next = hunkblocks;
hunkblocks = block;
buf = ((byte *) buf) + sizeof(hunkblock_t);
}
#endif
return buf;
}
/*
This is used by the file loading system.
Multiple files can be loaded in temporary memory.
When the files-in-use count reaches zero, all temp memory will be deleted
*/
void* Hunk_AllocateTempMemory( int size )
{
// return a Z_Malloc'd block if the hunk has not been initialized
// this allows the config and product id files ( journal files too ) to be loaded
// by the file system without redundant routines in the FS utilizing different memory systems
if (!s_hunkData) {
return Z_Malloc(size);
}
Hunk_SwapBanks();
size = PAD(size, sizeof(intptr_t)) + sizeof( hunkHeader_t );
if ( hunk_temp->temp + hunk_permanent->permanent + size > s_hunkTotal ) {
Com_Error( ERR_DROP, "Hunk_AllocateTempMemory: failed on %i", size );
}
void* buf;
if ( hunk_temp == &hunk_low ) {
buf = (void *)(s_hunkData + hunk_temp->temp);
hunk_temp->temp += size;
} else {
hunk_temp->temp += size;
buf = (void *)(s_hunkData + s_hunkTotal - hunk_temp->temp );
}
if ( hunk_temp->temp > hunk_temp->tempHighwater ) {
hunk_temp->tempHighwater = hunk_temp->temp;
}
hunkHeader_t* hdr = (hunkHeader_t*)buf;
buf = (void*)(hdr+1);
hdr->magic = HUNK_MAGIC_INUSE;
hdr->size = size;
// don't bother clearing, because we are going to load a file over it
return buf;
}
void Hunk_FreeTempMemory( void* buf )
{
// free with Z_Free if the hunk has not been initialized
// this allows the config and product id files ( journal files too ) to be loaded
// by the file system without redundant routines in the FS utilizing different memory systems
if (!s_hunkData) {
Z_Free(buf);
return;
}
hunkHeader_t* hdr = ( (hunkHeader_t *)buf ) - 1;
if ( hdr->magic != HUNK_MAGIC_INUSE ) {
Com_Error( ERR_FATAL, "Hunk_FreeTempMemory: bad magic" );
}
hdr->magic = HUNK_MAGIC_FREED;
// this only works if the files are freed in stack order,
// otherwise the memory will stay around until Hunk_ClearTempMemory
if ( hunk_temp == &hunk_low ) {
if ( hdr == (void *)(s_hunkData + hunk_temp->temp - hdr->size ) ) {
hunk_temp->temp -= hdr->size;
} else {
Com_Printf( "Hunk_FreeTempMemory: not the final block\n" );
}
} else {
if ( hdr == (void *)(s_hunkData + s_hunkTotal - hunk_temp->temp ) ) {
hunk_temp->temp -= hdr->size;
} else {
Com_Printf( "Hunk_FreeTempMemory: not the final block\n" );
}
}
}
/*
The temp space is no longer needed.
If we have left more touched but unused memory on this side,
have future permanent allocs use this side.
*/
void Hunk_ClearTempMemory()
{
if ( s_hunkData ) {
hunk_temp->temp = hunk_temp->permanent;
}
}
/*
===================================================================
EVENTS AND JOURNALING
In addition to these events, .cfg files are also copied to the
journaled file
===================================================================
*/
// FIXME TTimo blunt upping from 256 to 1024
// https://zerowing.idsoftware.com/bugzilla/show_bug.cgi?id=5
#define MAX_PUSHED_EVENTS 1024
static sysEvent_t com_pushedEvents[MAX_PUSHED_EVENTS];
static int com_pushedEventsHead;
static int com_pushedEventsTail;
static void Com_InitJournaling()
{
Com_StartupVariable( "journal" );
com_journal = Cvar_Get ("journal", "0", CVAR_INIT);
if ( !com_journal->integer ) {
return;
}
if ( com_journal->integer == 1 ) {
Com_Printf( "Journaling events\n");
com_journalFile = FS_FOpenFileWrite( "journal.dat" );
com_journalDataFile = FS_FOpenFileWrite( "journaldata.dat" );
} else if ( com_journal->integer == 2 ) {
Com_Printf( "Replaying journaled events\n");
FS_FOpenFileRead( "journal.dat", &com_journalFile, qtrue );
FS_FOpenFileRead( "journaldata.dat", &com_journalDataFile, qtrue );
}
if ( !com_journalFile || !com_journalDataFile ) {
Cvar_Set( "com_journal", "0" );
com_journalFile = 0;
com_journalDataFile = 0;
Com_Printf( "Couldn't open journal files\n" );
}
}
static sysEvent_t Com_GetRealEvent()
{
int r;
sysEvent_t ev;
// get an event from either the system or the journal file
if ( com_journal->integer == 2 ) {
r = FS_Read( &ev, sizeof(ev), com_journalFile );
if ( r != sizeof(ev) ) {
Com_Error( ERR_FATAL, "Error reading from journal file" );
}
if ( ev.evPtrLength ) {
ev.evPtr = Z_Malloc( ev.evPtrLength );
r = FS_Read( ev.evPtr, ev.evPtrLength, com_journalFile );
if ( r != ev.evPtrLength ) {
Com_Error( ERR_FATAL, "Error reading from journal file" );
}
}
} else {
ev = Sys_GetEvent();
// write the journal value out if needed
if ( com_journal->integer == 1 ) {
r = FS_Write( &ev, sizeof(ev), com_journalFile );
if ( r != sizeof(ev) ) {
Com_Error( ERR_FATAL, "Error writing to journal file" );
}
if ( ev.evPtrLength ) {
r = FS_Write( ev.evPtr, ev.evPtrLength, com_journalFile );
if ( r != ev.evPtrLength ) {
Com_Error( ERR_FATAL, "Error writing to journal file" );
}
}
}
}
return ev;
}
static void Com_PushEvent( const sysEvent_t* event )
{
static qbool printedWarning = qfalse;
sysEvent_t* ev = &com_pushedEvents[ com_pushedEventsHead & (MAX_PUSHED_EVENTS-1) ];
if ( com_pushedEventsHead - com_pushedEventsTail >= MAX_PUSHED_EVENTS ) {
// don't print the warning constantly, or it can give time for more...
if ( !printedWarning ) {
printedWarning = qtrue;
Com_Printf( "WARNING: Com_PushEvent overflow\n" );
}
if ( ev->evPtr ) {
Z_Free( ev->evPtr );
}
com_pushedEventsTail++;
} else {
printedWarning = qfalse;
}
*ev = *event;
com_pushedEventsHead++;
}
static sysEvent_t Com_GetEvent()
{
if ( com_pushedEventsHead > com_pushedEventsTail ) {
com_pushedEventsTail++;
return com_pushedEvents[ (com_pushedEventsTail-1) & (MAX_PUSHED_EVENTS-1) ];
}
return Com_GetRealEvent();
}
static void Com_RunAndTimeServerPacket( const netadr_t& from, msg_t* msg )
{
int t1 = (com_speeds->integer == 3) ? Sys_Milliseconds() : 0;
SV_PacketEvent( from, msg );
if (com_speeds->integer == 3) {
int ms = Sys_Milliseconds() - t1;
Com_Printf( "SV_PacketEvent time: %i\n", ms );
}
}
// returns last event time
int Com_EventLoop()
{
sysEvent_t ev;
netadr_t evFrom;
byte bufData[MAX_MSGLEN];
msg_t buf;
MSG_Init( &buf, bufData, sizeof( bufData ) );
while ( 1 ) {
NET_FlushPacketQueue();
ev = Com_GetEvent();
// if no more events are available
if ( ev.evType == SE_NONE ) {
// manually send packet events for the loopback channel
#ifndef DEDICATED
while ( NET_GetLoopPacket( NS_CLIENT, &evFrom, &buf ) ) {
CL_PacketEvent( evFrom, &buf );
}
#endif
while ( NET_GetLoopPacket( NS_SERVER, &evFrom, &buf ) ) {
// if the server just shut down, flush the events
if ( com_sv_running->integer ) {
Com_RunAndTimeServerPacket( evFrom, &buf );
}
}
return ev.evTime;
}
switch ( ev.evType ) {
default:
Com_Error( ERR_FATAL, "Com_EventLoop: bad event type %i", ev.evType );
break;
case SE_NONE:
break;
#ifndef DEDICATED
case SE_KEY:
CL_KeyEvent( ev.evValue, (ev.evValue2 != 0), ev.evTime );
break;
case SE_CHAR:
CL_CharEvent( ev.evValue );
break;
case SE_MOUSE:
CL_MouseEvent( ev.evValue, ev.evValue2, ev.evTime );
break;
case SE_JOYSTICK_AXIS:
CL_JoystickEvent( ev.evValue, ev.evValue2, ev.evTime );
break;
#endif
case SE_CONSOLE:
Cbuf_AddText( (char *)ev.evPtr );
Cbuf_AddText( "\n" );
break;
case SE_PACKET:
evFrom = *(netadr_t *)ev.evPtr;
buf.cursize = ev.evPtrLength - sizeof( evFrom );
// we must copy the contents of the message out, because
// the event buffers are only large enough to hold the
// exact payload, but channel messages need to be large
// enough to hold fragment reassembly
if ( (unsigned)buf.cursize > buf.maxsize ) {
Com_Printf("Com_EventLoop: oversize packet\n");
continue;
}
Com_Memcpy( buf.data, (byte *)((netadr_t *)ev.evPtr + 1), buf.cursize );
if ( com_sv_running->integer ) {
Com_RunAndTimeServerPacket( evFrom, &buf );
} else {
#ifndef DEDICATED
CL_PacketEvent( evFrom, &buf );
#endif
}
break;
}
// free any block data
if ( ev.evPtr ) {
Z_Free( ev.evPtr );
}
}
return 0; // never reached
}
// can be used for profiling, but will be journaled accurately
int Com_Milliseconds()
{
sysEvent_t ev;
// get events and push them until we get a null event with the current time
do {
ev = Com_GetRealEvent();
if ( ev.evType != SE_NONE ) {
Com_PushEvent( &ev );
}
} while ( ev.evType != SE_NONE );
return ev.evTime;
}
///////////////////////////////////////////////////////////////
#if defined(DEBUG) || defined(CNQ3_DEV)
// throw a fatal error to test error shutdown procedures
static void Com_Error_f( void )
{
if ( Cmd_Argc() > 1 ) {
Com_Error( ERR_DROP, "Testing drop error" );
} else {
Com_Error( ERR_FATAL, "Testing fatal error" );
}
}
// freeze in place for a given number of seconds to test error recovery
static void Com_Freeze_f( void )
{
if ( Cmd_Argc() != 2 ) {
Com_Printf( "freeze <seconds>\n" );
return;
}
float s = atof( Cmd_Argv(1) );
int start = Com_Milliseconds();
while ( ( Com_Milliseconds() - start ) / 1000.0f < s )
;
}
static void Com_Exit_f( void )
{
exit( 666 );
}
// force a bus error for development reasons
static void Com_Crash_f( void )
{
*(int*)0 = 0x12345678;
}
#endif
// TTimo: centralizing the cl_cdkey stuff after I discovered a buffer overflow problem with the dedicated server version
// not sure it's necessary to have different defaults for regular and dedicated, but I don't want to risk it
// https://zerowing.idsoftware.com/bugzilla/show_bug.cgi?id=470
#ifndef DEDICATED
char cl_cdkey[34] = " ";
#else
char cl_cdkey[34] = "123456789";
#endif
#ifndef DEDICATED
/*
=================
Com_ReadCDKey
=================
*/
qbool CL_CDKeyValidate( const char *key, const char *checksum );
void Com_ReadCDKey( const char *filename ) {
fileHandle_t f;
char buffer[33];
char fbuffer[MAX_OSPATH];
sprintf(fbuffer, "%s/q3key", filename);
FS_SV_FOpenFileRead( fbuffer, &f );
if ( !f ) {
Q_strncpyz( cl_cdkey, " ", 17 );
return;
}
Com_Memset( buffer, 0, sizeof(buffer) );
FS_Read( buffer, 16, f );
FS_FCloseFile( f );
if (CL_CDKeyValidate(buffer, NULL)) {
Q_strncpyz( cl_cdkey, buffer, 17 );
} else {
Q_strncpyz( cl_cdkey, " ", 17 );
}
}
/*
=================
Com_AppendCDKey
=================
*/
void Com_AppendCDKey( const char *filename ) {
fileHandle_t f;
char buffer[33];
char fbuffer[MAX_OSPATH];
sprintf(fbuffer, "%s/q3key", filename);
FS_SV_FOpenFileRead( fbuffer, &f );
if (!f) {
Q_strncpyz( &cl_cdkey[16], " ", 17 );
return;
}
Com_Memset( buffer, 0, sizeof(buffer) );
FS_Read( buffer, 16, f );
FS_FCloseFile( f );
if (CL_CDKeyValidate(buffer, NULL)) {
strcat( &cl_cdkey[16], buffer );
} else {
Q_strncpyz( &cl_cdkey[16], " ", 17 );
}
}
#else
void Com_AppendCDKey( const char *filename ) {
}
void Com_ReadCDKey( const char *filename ) {
}
#endif
// 0=eax 1=ebx 2=ecx 3=edx
static qbool Com_CPUID( int function, int registers[4] ) {
#if MSVC_CPUID
__cpuid( registers, function );
return qtrue;
#elif GCC_CPUID
if( __get_cpuid( (unsigned int)function, (unsigned int*)&registers[0], (unsigned int*)&registers[1],
(unsigned int*)&registers[2], (unsigned int*)&registers[3] ) != 1 )
return qfalse;
return qtrue;
#else
return qfalse;
#endif
}
static const char* Com_ProcessorName() {
static int regs[4];
if( !Com_CPUID( 0, regs) ) {
return NULL;
}
regs[0] = regs[1];
regs[1] = regs[3];
regs[3] = 0;
return (const char*)regs;
}
typedef struct {
const char* s;
int reg;
int bit;
int flag;
qbool noTest;
} cpuFeatureBit_t;
#if idx64
#define IS_X64 qtrue
#define BASIC_CPU_FEATURES (CPU_MMX | CPU_SSE | CPU_SSE2)
#else
#define IS_X64 qfalse
#define BASIC_CPU_FEATURES 0
#endif
static const cpuFeatureBit_t cpu_featureBits[] = {
{ " MMX", 3, 23, CPU_MMX, IS_X64 },
{ " SSE", 3, 25, CPU_SSE, IS_X64 },
{ " SSE2", 3, 26, CPU_SSE2, IS_X64 },
// the following aren't used anywhere for now:
// { " SSE3", 2, 0, CPU_SSE3, qfalse },
// { " SSSE3", 2, 9, CPU_SSSE3, qfalse },
// { " SSE4.1", 2, 19, CPU_SSE41, qfalse },
// { " SSE4.2", 2, 20, CPU_SSE42, qfalse },
// { " AVX", 2, 28, CPU_AVX, qfalse }
// for AVX2 and later, you'd need to call cpuid with eax=7 and ecx=0 ("extended features")
};
int cpu_features = BASIC_CPU_FEATURES;
static qbool Com_GetProcessorInfo()
{
Cvar_Get( "sys_cpustring", "unknown", 0 );
int regs[4];
const char* name = Com_ProcessorName();
if ( name == NULL || !Com_CPUID( 1, regs ) ) {
cpu_features = BASIC_CPU_FEATURES;
return qfalse;
}
char s[256] = "";
Q_strcat( s, sizeof(s), name );
int features = BASIC_CPU_FEATURES;
for (int i = 0; i < ARRAY_LEN(cpu_featureBits); i++) {
const cpuFeatureBit_t* f = cpu_featureBits + i;
if ( f->noTest || (regs[f->reg] & (1 << f->bit)) ) {
Q_strcat( s, sizeof(s), f->s );
features |= f->flag;
}
}
cpu_features = features;
Cvar_Set( "sys_cpustring", s );
return qtrue;
}
#undef BASIC_CPU_FEATURES
#undef IS_X64
static const cmdTableItem_t com_cmds[] =
{
#if defined(DEBUG) || defined(CNQ3_DEV)
{ "error", Com_Error_f },
{ "crash", Com_Crash_f },
{ "freeze", Com_Freeze_f },
{ "exit", Com_Exit_f },
#endif
{ "quit", Com_Quit_f, NULL, "closes the application" },
{ "writeconfig", Com_WriteConfig_f, Com_CompleteWriteConfig_f, "write the cvars and key binds to a file" }
};
static const cvarTableItem_t com_cvars[] =
{
{ &com_maxfps, "com_maxfps", "125", CVAR_ARCHIVE, CVART_INTEGER, "60", "250", help_com_maxfps },
{ &com_developer, "developer", "0", CVAR_TEMP, CVART_BOOL, NULL, NULL, "enables detailed logging" },
{ &com_logfile, "logfile", "0", CVAR_TEMP, CVART_INTEGER, "0", "2", help_com_logfile },
{ &com_timescale, "timescale", "1", CVAR_CHEAT | CVAR_SYSTEMINFO, CVART_FLOAT, "0.1", "100", "game time to real time ratio" },
{ &com_fixedtime, "fixedtime", "0", CVAR_CHEAT, CVART_INTEGER, "1", "64", "fixed number of ms per simulation tick" },
{ &com_showtrace, "com_showtrace", "0", CVAR_CHEAT, CVART_BOOL, NULL, NULL, "prints trace optimization info" },
{ &com_viewlog, "viewlog", "0", CVAR_CHEAT, CVART_INTEGER, "0", "2", help_com_viewlog },
{ &com_speeds, "com_speeds", "0", 0, CVART_BOOL, NULL, NULL, "prints timing info" },
{ &com_timedemo, "timedemo", "0", CVAR_CHEAT, CVART_BOOL, NULL, NULL, "benchmarking mode for demo playback" },
{ &cl_paused, "cl_paused", "0", CVAR_ROM, CVART_BOOL },
{ &sv_paused, "sv_paused", "0", CVAR_ROM, CVART_BOOL },
{ &cl_packetdelay, "cl_packetdelay", "0", CVAR_CHEAT, CVART_INTEGER, "0", NULL },
{ &sv_packetdelay, "sv_packetdelay", "0", CVAR_CHEAT, CVART_INTEGER, "0", NULL },
{ &com_sv_running, "sv_running", "0", CVAR_ROM, CVART_BOOL },
{ &com_cl_running, "cl_running", "0", CVAR_ROM, CVART_BOOL },
#if defined(_WIN32) && defined(_DEBUG)
{ &com_noErrorInterrupt, "com_noErrorInterrupt", "0", 0, CVART_BOOL },
#endif
{ &com_completionStyle, "com_completionStyle", "0", CVAR_ARCHIVE, CVART_BOOL, NULL, NULL, help_com_completionStyle },
{ &con_history, "con_history", "1", CVAR_ARCHIVE, CVART_BOOL, NULL, NULL, "writes the command history to a file on exit" }
};
#if defined(_MSC_VER)
#pragma warning (disable: 4611) // setjmp + destructors = bad. which it is, but...
#endif
void Com_Init( char *commandLine )
{
Com_Printf( "%s %s %s\n", Q3_VERSION, PLATFORM_STRING, __DATE__ );
if ( setjmp(abortframe) ) {
Sys_Error ("Error during initialization");
}
memset( com_pushedEvents, 0, sizeof(com_pushedEvents) );
com_pushedEventsHead = 0;
com_pushedEventsTail = 0;
Com_InitSmallZoneMemory();
Cvar_Init();
// prepare enough of the subsystems to handle
// cvar and command buffer management
Com_ParseCommandLine( commandLine );
Cbuf_Init();
Com_InitZoneMemory();
Cmd_Init();
// override anything from the config files with command line args
Com_StartupVariable( NULL );
// get the developer cvar set as early as possible
Com_StartupVariable( "developer" );
// done early so bind command exists
#ifndef DEDICATED
CL_InitKeyCommands();
#endif
FS_InitFilesystem();
Com_InitJournaling();
Cbuf_AddText("exec default.cfg\n");
// skip the q3config.cfg if "safe" is on the command line
if ( !Com_SafeMode() )
Cbuf_AddText("exec q3config.cfg\n");
Cbuf_AddText("exec autoexec.cfg\n");
Cbuf_Execute();
// override anything from the config files with command line args
Com_StartupVariable( NULL );
// get dedicated here for proper hunk megs initialization
#ifdef DEDICATED
com_dedicated = Cvar_Get("dedicated", "1", CVAR_ROM);
#else
com_dedicated = Cvar_Get("dedicated", "0", CVAR_LATCH);
#endif
// allocate the stack based hunk allocator
Com_InitHunkMemory();
// if any archived cvars are modified after this, we will trigger a writing
// of the config file
cvar_modifiedFlags &= ~CVAR_ARCHIVE;
//
// init commands and vars
//
Cvar_RegisterArray( com_cvars, MODULE_COMMON );
if ( com_dedicated->integer ) {
if ( !com_viewlog->integer ) {
Cvar_Set( "viewlog", "1" );
}
}
Cmd_RegisterArray( com_cmds, MODULE_COMMON );
const char* s = Q3_VERSION" "PLATFORM_STRING" "__DATE__;
com_version = Cvar_Get( "version", s, CVAR_ROM | CVAR_SERVERINFO );
Cvar_Get( "sys_cpustring", "detect", 0 );
if ( Com_GetProcessorInfo() ) {
Com_Printf( "CPU: %s\n", Cvar_VariableString( "sys_cpustring" ) );
}
Sys_Init();
Netchan_Init( Com_Milliseconds() & 0xffff ); // pick a port value that should be nice and random
VM_Init();
SV_Init();
com_dedicated->modified = qfalse;
if ( !com_dedicated->integer ) {
#ifndef DEDICATED
CL_Init();
#endif
}
Sys_LoadHistory();
// set com_frameTime so that if a map is started on the
// command line it will still be able to count on com_frameTime
// being random enough for a serverid
com_frameTime = Com_Milliseconds();
// add + commands from command line
Com_AddStartupCommands();
// start in full screen ui mode
Cvar_Set( "r_uiFullScreen", "1" );
#ifndef DEDICATED
CL_StartHunkUsers();
#endif
// moved to fix the console window staying visible when starting the game in full-screen mode
if ( !com_dedicated->integer )
Sys_ShowConsole( com_viewlog->integer, qfalse );
// make sure single player is off by default
Cvar_Set( "sv_singlePlayer", "0" );
com_fullyInitialized = qtrue;
Com_Printf ("--- Common Initialization Complete ---\n");
}
//==================================================================
static void Com_WriteConfigToFile( const char* filename )
{
fileHandle_t f = FS_FOpenFileWrite( filename );
if ( !f ) {
Com_Printf ("Couldn't write %s.\n", filename );
return;
}
FS_Printf(f, "// generated by quake, do not modify\n");
#ifndef DEDICATED
Key_WriteBindings(f);
#endif
Cvar_WriteVariables(f);
FS_FCloseFile( f );
}
// write the config file to a specific name
static void Com_WriteConfig_f()
{
if ( Cmd_Argc() != 2 ) {
Com_Printf( "Usage: writeconfig <filename>\n" );
return;
}
char filename[MAX_QPATH];
Q_strncpyz( filename, Cmd_Argv(1), sizeof( filename ) );
COM_DefaultExtension( filename, sizeof( filename ), ".cfg" );
Com_Printf( "Writing %s.\n", filename );
Com_WriteConfigToFile( filename );
}
static void Com_CompleteWriteConfig_f( int startArg, int compArg )
{
if ( startArg + 1 == compArg )
Field_AutoCompleteCustom( startArg, compArg, &Field_AutoCompleteConfigName );
}
static int Com_ModifyMsec( int msec )
{
// modify time for debugging values
//
if ( com_fixedtime->integer ) {
msec = com_fixedtime->integer;
} else if ( com_timescale->value ) {
msec *= com_timescale->value;
}
// don't let it scale below 1 msec
if ( msec < 1 && com_timescale->value) {
msec = 1;
}
int clampTime;
if ( com_dedicated->integer ) {
// dedicated servers don't want to clamp for too long a period
// because it would mess up all the client's views of time
if ( msec > 500 ) {
Com_Printf( "Hitch warning: %i msec frame time\n", msec );
}
clampTime = 5000;
}
else if ( !com_sv_running->integer ) {
// clients of remote servers do not want to clamp time, because
// it would skew their view of the server's time temporarily
clampTime = 5000;
}
else {
// for local single player gaming
// we may want to clamp the time to prevent players from
// flying off edges when something hitches.
clampTime = 200;
}
if ( msec > clampTime ) {
msec = clampTime;
}
return msec;
}
void Com_Frame()
{
if ( setjmp(abortframe) ) {
return; // an ERR_DROP was thrown
}
// bk001204 - init to zero.
// also: might be clobbered by `longjmp' or `vfork'
int timeBeforeFirstEvents =0;
int timeBeforeServer =0;
int timeBeforeEvents =0;
int timeBeforeClient = 0;
int timeAfter = 0;
// if "viewlog" has been modified, show or hide the log console
if ( com_viewlog->modified ) {
if ( !com_dedicated->value ) {
Sys_ShowConsole( com_viewlog->integer, qfalse );
}
com_viewlog->modified = qfalse;
}
//
// main event loop
//
if ( com_speeds->integer ) {
timeBeforeFirstEvents = Sys_Milliseconds();
}
// we may want to spin here if things are going too fast
int minMsec = 1;
if ( !com_dedicated->integer && com_maxfps->integer > 0 && !com_timedemo->integer )
minMsec = 1000 / com_maxfps->integer;
#ifndef DEDICATED
// let's not limit the download speed by sleeping too much
qbool CL_MapDownload_Active(); // in client.h
if ( CL_MapDownload_Active() )
minMsec = 1;
#endif
static int lastTime = 0;
int msec;
do {
com_frameTime = Com_EventLoop();
msec = com_frameTime - lastTime;
} while ( msec < minMsec );
lastTime = com_frameTime;
Cbuf_Execute();
// mess with msec if needed
msec = Com_ModifyMsec( msec );
//
// server side
//
if ( com_speeds->integer ) {
timeBeforeServer = Sys_Milliseconds();
}
SV_Frame( msec );
// if "dedicated" has been modified, start up
// or shut down the client system.
// Do this after the server may have started,
// but before the client tries to auto-connect
if ( com_dedicated->modified ) {
// get the latched value
Cvar_Get( "dedicated", "0", 0 );
com_dedicated->modified = qfalse;
if ( !com_dedicated->integer ) {
#ifndef DEDICATED
CL_Init();
#endif
Sys_ShowConsole( com_viewlog->integer, qfalse );
} else {
#ifndef DEDICATED
CL_Shutdown();
#endif
Sys_ShowConsole( 1, qtrue );
}
}
#ifdef DEDICATED
if ( com_speeds->integer ) {
timeAfter = Sys_Milliseconds();
timeBeforeEvents = timeAfter;
timeBeforeClient = timeAfter;
}
#else
//
// client system
//
if ( !com_dedicated->integer ) {
//
// run event loop a second time to get server to client packets
// without a frame of latency
//
if ( com_speeds->integer ) {
timeBeforeEvents = Sys_Milliseconds();
}
Com_EventLoop();
Cbuf_Execute();
//
// client side
//
if ( com_speeds->integer ) {
timeBeforeClient = Sys_Milliseconds();
}
CL_Frame( msec );
if ( com_speeds->integer ) {
timeAfter = Sys_Milliseconds();
}
}
#endif
//
// report timing information
//
if ( com_speeds->integer ) {
int all = timeAfter - timeBeforeServer;
int sv = timeBeforeEvents - timeBeforeServer - time_game;
int ev = timeBeforeServer - timeBeforeFirstEvents + timeBeforeClient - timeBeforeEvents;
int cl = timeAfter - timeBeforeClient - (time_frontend + time_backend);
Com_Printf( "frame:%i all:%3i sv:%3i ev:%3i cl:%3i gm:%3i rf:%3i bk:%3i\n",
com_frameNumber, all, sv, ev, cl, time_game, time_frontend, time_backend );
}
//
// trace optimization tracking
//
if ( com_showtrace->integer ) {
extern int c_traces, c_brush_traces, c_patch_traces, c_pointcontents;
Com_Printf( "%4i traces (%ib %ip) %4i points\n",
c_traces, c_brush_traces, c_patch_traces, c_pointcontents );
c_traces = 0;
c_brush_traces = 0;
c_patch_traces = 0;
c_pointcontents = 0;
}
com_frameNumber++;
}
void Com_Shutdown()
{
if (logfile) {
FS_FCloseFile( logfile );
logfile = 0;
}
if ( com_journalFile ) {
FS_FCloseFile( com_journalFile );
com_journalFile = 0;
}
}
///////////////////////////////////////////////////////////////
/*
=====================
KHB !!! see if this is still true - even vc might actually have a bug fixed in 8 years :P
the msvc acos doesn't always return a value between -PI and PI:
int i;
i = 1065353246;
acos(*(float*) &i) == -1.#IND0
This should go in q_math but it is too late to add new traps
to game and ui
=====================
*/
float Q_acos(float c)
{
float angle = acos(c);
if (angle > M_PI) {
return (float)M_PI;
}
if (angle < -M_PI) {
return (float)M_PI;
}
return angle;
}
static unsigned int CRC32_table[256];
static qbool CRC32_tableCreated = qfalse;
void CRC32_Begin( unsigned int* crc )
{
if ( !CRC32_tableCreated )
{
for ( int i = 0; i < 256; i++ )
{
unsigned int c = i;
for ( int j = 0; j < 8; j++ )
c = c & 1 ? (c >> 1) ^ 0xEDB88320UL : c >> 1;
CRC32_table[i] = c;
}
CRC32_tableCreated = qtrue;
}
*crc = 0xFFFFFFFFUL;
}
void CRC32_ProcessBlock( unsigned int* crc, const void* buffer, unsigned int length )
{
unsigned int hash = *crc;
const unsigned char* buf = (const unsigned char*)buffer;
while ( length-- )
{
hash = CRC32_table[(hash ^ *buf++) & 0xFF] ^ (hash >> 8);
}
*crc = hash;
}
void CRC32_End( unsigned int* crc )
{
*crc ^= 0xFFFFFFFFUL;
}
/*
===========================================
command line completion
===========================================
*/
void Field_Clear( field_t* edit )
{
memset(edit->buffer, 0, MAX_EDIT_LINE);
edit->cursor = 0;
edit->scroll = 0;
}
static const char* completionString;
static char shortestMatch[MAX_TOKEN_CHARS];
static char fullMatch[MAX_TOKEN_CHARS];
static int matchCount;
static int matchIndex;
static qbool findIndexOnly; // for ET-style completion of command arguments
static field_t* completionField; // field we are working on, passed to Field_AutoComplete
static void FindMatches( const char *s )
{
int i;
if ( Q_stricmpn( s, completionString, strlen( completionString ) ) ) {
return;
}
matchCount++;
if ( matchCount == 1 ) {
Q_strncpyz( shortestMatch, s, sizeof( shortestMatch ) );
return;
}
// cut shortestMatch to the amount common with s
for ( i = 0 ; shortestMatch[i] ; i++ ) {
if ( i >= strlen( s ) ) {
shortestMatch[i] = 0;
break;
}
if ( tolower(shortestMatch[i]) != tolower(s[i]) ) {
shortestMatch[i] = 0;
}
}
}
static int findMatchIndex;
static void FindIndexMatch( const char *s )
{
if ( Q_stricmpn( s, completionString, strlen( completionString ) ) ) {
return;
}
if ( findMatchIndex == matchIndex ) {
Q_strncpyz( fullMatch, s, sizeof( fullMatch ) );
}
findMatchIndex++;
}
static void PrintMatches( const char *s )
{
if ( !Q_stricmpn( s, shortestMatch, strlen( shortestMatch ) ) ) {
Com_Printf( " %s\n", s );
}
}
static void PrintCmdMatches( const char *s )
{
if ( Q_stricmpn( s, shortestMatch, strlen( shortestMatch ) ) )
return;
char msg[CONSOLE_WIDTH * 2]; // account for lots of color codes
const char* desc;
const char* help;
Cmd_GetHelp( &desc, &help, s );
const char h = help != NULL ? 'h' : ' ';
if ( desc )
Com_sprintf( msg, sizeof(msg), " %c "COLOR_CMD"%s - "COLOR_HELP"%s\n", h, s, desc );
else
Com_sprintf( msg, sizeof(msg), " %c "COLOR_CMD"%s\n", h, s );
Com_TruncatePrintString( msg, sizeof(msg), CONSOLE_WIDTH );
Com_Printf( msg );
}
static void PrintCvarMatches( const char *s )
{
if ( Q_stricmpn( s, shortestMatch, strlen( shortestMatch ) ) )
return;
char msg[CONSOLE_WIDTH * 2]; // account for lots of color codes
const char* desc;
const char* help;
Cvar_GetHelp( &desc, &help, s );
const char h = help != NULL ? 'h' : ' ';
const char u = ( Cvar_Flags(s) & CVAR_USER_CREATED ) != 0 ? '?' : h;
if ( desc )
Com_sprintf( msg, sizeof(msg), " %c "COLOR_CVAR"%s^7 = \""COLOR_VAL"%s^7\" - "COLOR_HELP"%s\n", u, s, Cvar_VariableString( s ), desc );
else
Com_sprintf( msg, sizeof(msg), " %c "COLOR_CVAR"%s^7 = \""COLOR_VAL"%s^7\"\n", u, s, Cvar_VariableString( s ) );
Com_TruncatePrintString( msg, sizeof(msg), CONSOLE_WIDTH );
Com_Printf( msg );
}
static void Field_AppendArgString( field_t *field, int arg, const char *s )
{
const qbool quoted = Cmd_ArgQuoted( arg );
if ( quoted )
Q_strcat( field->buffer, sizeof( field->buffer ), "\"" );
Q_strcat( field->buffer, sizeof( field->buffer ), s );
if ( quoted )
Q_strcat( field->buffer, sizeof( field->buffer ), "\"" );
}
static void Field_AppendArg( field_t *field, int arg )
{
Field_AppendArgString( field, arg, Cmd_Argv( arg ) );
}
static void Field_AppendLastArgs( field_t *field, int startArg )
{
const int argc = Cmd_Argc();
for ( int i = startArg; i < argc; ++i ) {
Q_strcat( field->buffer, sizeof( field->buffer ), " " );
Field_AppendArg( field, i );
}
}
static void Field_AppendFirstArgs( field_t *field, int count )
{
if ( count <= 0 )
return;
Field_AppendArg( field, 0 );
for ( int i = 1; i < count; ++i ) {
Q_strcat( field->buffer, sizeof( field->buffer ), " " );
Field_AppendArg( field, i );
}
}
static qbool String_HasLeadingSlash( const char *arg )
{
return ((*arg == '\\') || (*arg == '/'));
}
// returns qtrue if the match list should be printed
static qboolean Field_CompleteShortestMatch( int startArg, int compArg )
{
if ( matchCount == 0 )
return qfalse;
field_t *const field = completionField;
// write the first part of the field
*field->buffer = '\0';
if ( compArg > 0 ) {
Field_AppendFirstArgs( field, compArg );
Q_strcat( field->buffer, sizeof( field->buffer ), " " );
}
Field_AppendArgString( field, compArg, shortestMatch );
if ( matchCount == 1 ) {
// finish the field with the only match
if ( compArg == Cmd_Argc() - 1 )
Q_strcat( field->buffer, sizeof( field->buffer ), " " );
field->cursor = strlen( field->buffer );
Field_AppendLastArgs( field, compArg + 1 );
return qfalse;
}
// finish the field with the shortest match and echo the command
field->cursor = strlen( field->buffer );
if ( Cmd_ArgQuoted( compArg ) )
field->cursor--;
Field_AppendLastArgs( field, compArg + 1 );
Com_Printf( "]%s\n", Cmd_Cmd() );
return qtrue;
}
static void Field_AutoCompleteCmdOrVarName( int startArg, int compArg, qbool searchCmds, qbool searchVars )
{
if ( !searchCmds && !searchVars )
return;
field_t* const field = completionField;
if ( field->acOffset > 0 ) {
if ( matchCount > 1 ) {
// find the next match
completionString = shortestMatch;
findMatchIndex = 0;
if ( searchCmds )
Cmd_CommandCompletion( FindIndexMatch );
if ( searchVars )
Cvar_CommandCompletion( FindIndexMatch );
matchIndex = ( matchIndex + 1 ) % matchCount;
// insert it in the edit field
if ( compArg == 0 ) {
Q_strncpyz( field->buffer, fullMatch, sizeof(field->buffer) );
field->cursor = strlen( field->buffer );
Field_AppendLastArgs( field, 1 );
} else {
field->buffer[0] = '\0';
Field_AppendFirstArgs( field, compArg );
Q_strcat( field->buffer, sizeof(field->buffer), " " );
Q_strcat( field->buffer, sizeof(field->buffer), fullMatch );
field->cursor = strlen( field->buffer );
Field_AppendLastArgs( field, compArg + 1 );
}
const int delta = String_HasLeadingSlash( field->buffer ) ? 0 : 1;
field->acLength = field->cursor + delta - field->acOffset;
}
return;
}
*shortestMatch = '\0';
matchCount = 0;
matchIndex = 0;
if ( searchCmds )
Cmd_CommandCompletion( FindMatches );
if ( searchVars )
Cvar_CommandCompletion( FindMatches );
if ( !Field_CompleteShortestMatch( startArg, compArg ) )
return;
// we found 2+ matches
if ( com_completionStyle->integer ) {
const int delta = String_HasLeadingSlash( field->buffer ) ? 0 : 1;
field->acStartArg = startArg;
field->acCompArg = compArg;
field->acOffset = field->cursor + delta;
field->acLength = 0;
}
if ( searchCmds )
Cmd_CommandCompletion( PrintCmdMatches );
if ( searchVars )
Cvar_CommandCompletion( PrintCvarMatches );
}
static void Field_AutoCompleteCommandArgument( int startArg, int compArg )
{
field_t* const field = completionField;
if ( field->acOffset == 0 ) {
*shortestMatch = '\0';
matchCount = 0;
matchIndex = 0;
}
const char* cmdName = Cmd_Argv( startArg );
if ( String_HasLeadingSlash( cmdName ) )
cmdName++;
if ( *cmdName == '\0' )
return;
if ( field->acStartArg == startArg && field->acOffset > 0 ) {
if ( matchCount > 1 ) {
// find the next match
completionString = shortestMatch;
findMatchIndex = 0;
findIndexOnly = qtrue;
Cmd_AutoCompleteArgument( cmdName, startArg, compArg );
findIndexOnly = qfalse;
matchIndex = ( matchIndex + 1 ) % matchCount;
// insert it in the edit field
field->buffer[0] = '\0';
Field_AppendFirstArgs( field, compArg );
Q_strcat( field->buffer, sizeof(field->buffer), " " );
Q_strcat( field->buffer, sizeof(field->buffer), fullMatch );
field->cursor = strlen( field->buffer );
Field_AppendLastArgs( field, compArg + 1 );
const int delta = String_HasLeadingSlash( field->buffer ) ? 0 : 1;
field->acLength = field->cursor + delta - field->acOffset;
}
return;
}
Cmd_AutoCompleteArgument( cmdName, startArg, compArg );
// we found 2+ matches
if ( field->acOffset == 0 && matchCount >= 2 && com_completionStyle->integer ) {
const int delta = String_HasLeadingSlash( field->buffer ) ? 0 : 1;
field->acStartArg = startArg;
field->acCompArg = compArg;
field->acOffset = field->cursor + delta;
field->acLength = 0;
}
}
void Field_AutoCompleteFrom( int startArg, int compArg, qbool searchCmds, qbool searchVars )
{
// For the first argument, we always check both variables and commands.
// For other arguments, we run a custom auto-completion handler
// registered by the command if one was provided.
if ( compArg == startArg ) {
Field_AutoCompleteCmdOrVarName( startArg, compArg, searchCmds, searchVars );
} else {
Field_AutoCompleteCommandArgument( startArg, compArg );
}
}
static void Field_AddLeadingSlash( field_t *field )
{
const size_t length = strlen( field->buffer );
if ( length + 1 < sizeof( field->buffer ) ) {
memmove( field->buffer + 1, field->buffer, length + 1 );
*field->buffer = '\\';
field->cursor++;
}
}
// runs the auto-completion but doesn't do the final leading slash and cursor position fix-ups
// returns qtrue if auto-completion was actually run on an argument
static qbool Field_AutoCompleteNoLeadingSlash( field_t *field )
{
completionField = field;
// first, decide which argument we're going to run completion on
Cmd_TokenizeString( field->buffer );
const int compArg = Cmd_Argc() == 1 ? 0 : Cmd_ArgIndexFromOffset( field->cursor );
if ( compArg < 0 || compArg >= Cmd_Argc() )
return qfalse;
// now select the actual string that needs completing
completionString = Cmd_Argv( compArg );
#ifndef DEDICATED
if ( compArg == 0 && String_HasLeadingSlash( completionString ) )
completionString++;
#endif
if ( *completionString == '\0' )
return qfalse;
Field_AutoCompleteFrom( 0, compArg, qtrue, qtrue );
// get rid of any superfluous space between arguments
if ( matchCount == 0 ) {
*field->buffer = '\0';
Field_AppendFirstArgs( field, Cmd_Argc() );
field->cursor = strlen( field->buffer );
}
return qtrue;
}
void Field_AutoComplete( field_t *field, qbool insertBackslash )
{
const qbool ranComp = Field_AutoCompleteNoLeadingSlash( field );
const qbool hadSlash = String_HasLeadingSlash( field->buffer );
if ( !hadSlash && insertBackslash )
Field_AddLeadingSlash( field );
if ( ranComp )
return;
const int argc = Cmd_Argc();
if ( argc > 0 ) {
// keep the whitespace and clamp the cursor to 1 past the last argument
const int offset = Cmd_ArgOffset( argc - 1 );
const int length = strlen( Cmd_Argv( argc - 1 ) );
const int max = offset + length + 1 + ( hadSlash ? 0 : 1 );
if ( field->cursor > max )
field->cursor = max;
} else {
// the input line is pure whitespace so we rewrite it
Q_strncpyz ( field->buffer, insertBackslash ? "\\" : "", sizeof( field->buffer ) );
field->cursor = strlen( field->buffer );
}
}
void Field_AutoCompleteCustom( int startArg, int compArg, fieldCompletionHandler_t callback )
{
if ( findIndexOnly ) {
( *callback )( FindIndexMatch );
return;
}
( *callback )( FindMatches );
if ( Field_CompleteShortestMatch( startArg, compArg ) )
( *callback )( PrintMatches );
}
void Field_AutoCompleteMapName( fieldCallback_t callback )
{
FS_FilenameCompletion( "maps", "bsp", qtrue, callback, 0 );
}
void Field_AutoCompleteConfigName( fieldCallback_t callback )
{
FS_FilenameCompletion( "", "cfg", qtrue, callback, FS_FILTER_INPAK );
}
void Field_AutoCompleteDemoNameRead( fieldCallback_t callback )
{
FS_FilenameCompletion( "demos", "dm_66", qtrue, callback, 0 );
FS_FilenameCompletion( "demos", "dm_67", qtrue, callback, 0 );
FS_FilenameCompletion( "demos", "dm_68", qtrue, callback, 0 );
}
void Field_AutoCompleteDemoNameWrite( fieldCallback_t callback )
{
FS_FilenameCompletion( "demos", "dm_68", qtrue, callback, FS_FILTER_INPAK );
}
#ifndef DEDICATED
void Field_AutoCompleteKeyName( fieldCallback_t callback )
{
Key_KeyNameCompletion( callback );
}
#endif
void History_Clear( history_t* history, int width )
{
for ( int i = 0; i < COMMAND_HISTORY; ++i ) {
Field_Clear( &history->commands[i] );
history->commands[i].widthInChars = width;
}
}
static int LengthWithoutTrailingWhitespace( const char* s )
{
int i = (int)strlen(s);
while ( i-- ) {
if ( s[i] != ' ' && s[i] != '\t' )
return i + 1;
}
return 0;
}
void History_SaveCommand( history_t* history, const field_t* edit )
{
// Avoid having the same command twice in a row.
// Unfortunately, this has to be case sensitive since case might matter for some commands.
if ( history->next > 0 ) {
// The real proper way to ignore whitespace is to tokenize both strings and compare the
// argument count and then each argument with a case sensitive comparison,
// but there's only one tokenizer data instance...
// Instead, we only ignore the trailing whitespace.
const int lengthCur = LengthWithoutTrailingWhitespace( edit->buffer );
if ( lengthCur == 0 ) {
history->display = history->next;
return;
}
const int prevLine = (history->next - 1) % COMMAND_HISTORY;
const int lengthPrev = LengthWithoutTrailingWhitespace( history->commands[prevLine].buffer );
if ( lengthCur == lengthPrev && strncmp(edit->buffer, history->commands[prevLine].buffer, lengthCur) == 0 ) {
history->display = history->next;
return;
}
}
// copy the line
history->commands[history->next % COMMAND_HISTORY] = *edit;
++history->next;
history->display = history->next;
}
void History_GetPreviousCommand( field_t* edit, history_t* history )
{
if ( history->next - history->display < COMMAND_HISTORY && history->display > 0 )
--history->display;
*edit = history->commands[history->display % COMMAND_HISTORY];
}
void History_GetNextCommand( field_t* edit, history_t* history, int width )
{
++history->display;
if ( history->display < history->next ) {
*edit = history->commands[history->display % COMMAND_HISTORY];
return;
}
history->display = history->next;
Field_Clear( edit );
edit->widthInChars = width;
}
// It makes no sense for both executables to share the same command history.
#if defined(DEDICATED)
#define HISTORY_PATH "cnq3svcmdhistory"
#else
#define HISTORY_PATH "cnq3cmdhistory"
#endif
void History_LoadFromFile( history_t* history )
{
fileHandle_t f;
FS_FOpenFileRead( HISTORY_PATH, &f, qfalse );
if ( f == 0 )
return;
int count;
if ( FS_Read( &count, sizeof(int), f ) != sizeof(int) ||
count <= 0 ||
count > COMMAND_HISTORY ) {
FS_FCloseFile( f );
return;
}
int lengths[COMMAND_HISTORY];
const int lengthBytes = sizeof(int) * count;
if ( FS_Read( lengths, lengthBytes, f ) != lengthBytes ) {
FS_FCloseFile( f );
return;
}
for ( int i = 0; i < count; ++i ) {
const int l = lengths[i];
if ( l <= 0 ||
FS_Read( history->commands[i].buffer, l, f ) != l ) {
FS_FCloseFile( f );
return;
}
history->commands[i].buffer[l] = '\0';
history->commands[i].cursor = l;
}
history->next = count;
history->display = count;
const int totalCount = ARRAY_LEN( history->commands );
for ( int i = count; i < totalCount; ++i ) {
history->commands[i].buffer[0] = '\0';
}
FS_FCloseFile( f );
}
void History_SaveToFile( const history_t* history )
{
if ( con_history->integer == 0 )
return;
const fileHandle_t f = FS_FOpenFileWrite( HISTORY_PATH );
if ( f == 0 )
return;
int count = 0;
int lengths[COMMAND_HISTORY];
const int totalCount = ARRAY_LEN( history->commands );
for ( int i = 0; i < totalCount; ++i ) {
const char* const s = history->commands[(history->display + i) % COMMAND_HISTORY].buffer;
if ( *s == '\0' )
continue;
lengths[count++] = strlen( s );
}
FS_Write( &count, sizeof(count), f );
FS_Write( lengths, sizeof(int) * count, f );
for ( int i = 0, j = 0; i < totalCount; ++i ) {
const char* const s = history->commands[(history->display + i) % COMMAND_HISTORY].buffer;
if ( *s == '\0' )
continue;
FS_Write( s, lengths[j++], f );
}
FS_FCloseFile( f );
}
const char* Q_itohex( uint64_t number, qbool uppercase, qbool prefix )
{
static const char* luts[2] = { "0123456789abcdef", "0123456789ABCDEF" };
static char buffer[19];
const int maxLength = 16;
const char* const lut = luts[uppercase == 0 ? 0 : 1];
uint64_t x = number;
int i = maxLength + 2;
buffer[i] = '\0';
while ( i-- ) {
buffer[i] = lut[x & 15];
x >>= 4;
}
int startOffset = 2;
for ( i = 2; i < maxLength + 1; i++, startOffset++ ) {
if ( buffer[i] != '0' )
break;
}
if ( prefix ) {
startOffset -= 2;
buffer[startOffset + 0] = '0';
buffer[startOffset + 1] = 'x';
}
return buffer + startOffset;
}
void Help_AllocSplitText( char** desc, char** help, const char* combined )
{
if ( *desc != NULL || *help != NULL ) {
// break here for some debugging fun
return;
}
const char* const newLine = strchr( combined, '\n' );
if ( !newLine ) {
*desc = CopyString( combined );
return;
}
const int srcLen = strlen( combined );
const int descLen = newLine - combined;
const int helpLen = srcLen - descLen - 1;
*desc = (char*)S_Malloc( descLen + 1 );
*help = (char*)S_Malloc( helpLen + 1 );
memcpy( *desc, combined, descLen );
memcpy( *help, combined + descLen + 1, helpLen );
(*desc)[descLen] = '\0';
(*help)[helpLen] = '\0';
}
void Com_TruncatePrintString( char* buffer, int size, int maxLength )
{
if ( Q_PrintStrlen( buffer ) <= maxLength )
return;
int byteIndex = Q_PrintStroff( buffer, maxLength );
if ( byteIndex < 0 || byteIndex >= size )
byteIndex = size - 1;
buffer[byteIndex - 4] = '.';
buffer[byteIndex - 3] = '.';
buffer[byteIndex - 2] = '.';
buffer[byteIndex - 1] = '\n';
buffer[byteIndex - 0] = '\0';
}
void Com_PrintModules( module_t firstModule, int moduleMask )
{
#define MODULE_ITEM(Enum, Desc) Desc,
static const char* ModuleNames[MODULE_COUNT + 1] =
{
MODULE_LIST(MODULE_ITEM)
""
};
#undef MODULE_ITEM
if ( firstModule == MODULE_NONE || moduleMask == 0 )
return;
const int otherModules = moduleMask & (~(1 << firstModule));
if ( otherModules )
Com_Printf( "Modules: " );
else
Com_Printf( "Module: " );
Com_Printf( "%s", ModuleNames[firstModule] );
for ( int i = 0; i < 32; ++i ) {
if ( (otherModules >> i) & 1 )
Com_Printf( ", %s", ModuleNames[i] );
}
Com_Printf("\n");
}
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