mirror of
https://github.com/DrBeef/JKXR.git
synced 2025-02-04 14:31:00 +00:00
84 lines
2.5 KiB
C
84 lines
2.5 KiB
C
|
/*
|
||
|
|
===========================================================================
|
||
|
|
Copyright (C) 1999 - 2005, Id Software, Inc.
|
||
|
|
Copyright (C) 2000 - 2013, Raven Software, Inc.
|
||
|
|
Copyright (C) 2001 - 2013, Activision, Inc.
|
||
|
|
Copyright (C) 2013 - 2015, OpenJK contributors
|
||
|
|
|
||
|
|
This file is part of the OpenJK source code.
|
||
|
|
|
||
|
|
OpenJK is free software; you can redistribute it and/or modify it
|
||
|
|
under the terms of the GNU General Public License version 2 as
|
||
|
|
published by the Free Software Foundation.
|
||
|
|
|
||
|
|
This program is distributed in the hope that it will be useful,
|
||
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
|
|
GNU General Public License for more details.
|
||
|
|
|
||
|
|
You should have received a copy of the GNU General Public License
|
||
|
|
along with this program; if not, see <http://www.gnu.org/licenses/>.
|
||
|
|
===========================================================================
|
||
|
|
*/
|
||
|
|
|
||
|
|
// g_mem.c
|
||
|
|
// Simple linear memory allocator
|
||
|
|
//
|
||
|
|
|
||
|
|
#include "g_local.h"
|
||
|
|
|
||
|
|
/*
|
||
|
|
The purpose of G_Alloc is to efficiently allocate memory for objects
|
||
|
|
typically when the game is starting up. It shouldn't be used as a general
|
||
|
|
purpose allocator that's used when the game is running, and especially not
|
||
|
|
from a client command! It is *by design* that memory blocks can't be
|
||
|
|
deallocated while the game is running!
|
||
|
|
|
||
|
|
If your mod experiences the allocation failed error often, use g_debugAlloc
|
||
|
|
to trace down where G_Alloc is being called and to make sure it isn't used
|
||
|
|
often while the game is running. Feel free to increase POOLSIZE for your mod!
|
||
|
|
|
||
|
|
More information about Linear Allocators:
|
||
|
|
http://www.altdevblogaday.com/2011/02/12/alternatives-to-malloc-and-new/
|
||
|
|
*/
|
||
|
|
|
||
|
|
#define POOLSIZE (4 * 1024 * 1024) // (256*1024)
|
||
|
|
|
||
|
|
static char memoryPool[POOLSIZE];
|
||
|
|
static int allocPoint;
|
||
|
|
|
||
|
|
void *G_Alloc( int size ) {
|
||
|
|
char *p;
|
||
|
|
|
||
|
|
if ( size <= 0 ) {
|
||
|
|
trap->Error( ERR_DROP, "G_Alloc: zero-size allocation\n", size );
|
||
|
|
return NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( g_debugAlloc.integer ) {
|
||
|
|
trap->Print( "G_Alloc of %i bytes (%i left)\n", size, POOLSIZE - allocPoint - ( ( size + 31 ) & ~31 ) );
|
||
|
|
}
|
||
|
|
|
||
|
|
if ( allocPoint + size > POOLSIZE ) {
|
||
|
|
trap->Error( ERR_DROP, "G_Alloc: failed on allocation of %i bytes\n", size ); // bk010103 - was %u, but is signed
|
||
|
|
return NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
p = &memoryPool[allocPoint];
|
||
|
|
|
||
|
|
allocPoint += ( size + 31 ) & ~31;
|
||
|
|
|
||
|
|
return p;
|
||
|
|
}
|
||
|
|
|
||
|
|
void G_InitMemory( void ) {
|
||
|
|
allocPoint = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
void Svcmd_GameMem_f( void ) {
|
||
|
|
float f = allocPoint;
|
||
|
|
f /= POOLSIZE;
|
||
|
|
f *= 100;
|
||
|
|
trap->Print("Game Memory Pool is %.1f%% full, %i bytes out of %i used.\n", f, allocPoint, POOLSIZE);
|
||
|
|
}
|