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Diffstat (limited to 'extern/ode/dist/ode/src/obstack.cpp')
| -rw-r--r-- | extern/ode/dist/ode/src/obstack.cpp | 130 |
1 files changed, 0 insertions, 130 deletions
diff --git a/extern/ode/dist/ode/src/obstack.cpp b/extern/ode/dist/ode/src/obstack.cpp deleted file mode 100644 index a6b9d36fbb4..00000000000 --- a/extern/ode/dist/ode/src/obstack.cpp +++ /dev/null @@ -1,130 +0,0 @@ -/************************************************************************* - * * - * Open Dynamics Engine, Copyright (C) 2001,2002 Russell L. Smith. * - * All rights reserved. Email: russ@q12.org Web: www.q12.org * - * * - * This library is free software; you can redistribute it and/or * - * modify it under the terms of EITHER: * - * (1) The GNU Lesser General Public License as published by the Free * - * Software Foundation; either version 2.1 of the License, or (at * - * your option) any later version. The text of the GNU Lesser * - * General Public License is included with this library in the * - * file LICENSE.TXT. * - * (2) The BSD-style license that is included with this library in * - * the file LICENSE-BSD.TXT. * - * * - * This library 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 files * - * LICENSE.TXT and LICENSE-BSD.TXT for more details. * - * * - *************************************************************************/ - -#include <ode/common.h> -#include <ode/error.h> -#include <ode/memory.h> -#include "obstack.h" - -//**************************************************************************** -// macros and constants - -#define ROUND_UP_OFFSET_TO_EFFICIENT_SIZE(arena,ofs) \ - ofs = (int) (dEFFICIENT_SIZE( ((intP)(arena)) + ofs ) - ((intP)(arena)) ); - -#define MAX_ALLOC_SIZE \ - ((int)(dOBSTACK_ARENA_SIZE - sizeof (Arena) - EFFICIENT_ALIGNMENT + 1)) - -//**************************************************************************** -// dObStack - -dObStack::dObStack() -{ - first = 0; - last = 0; - current_arena = 0; - current_ofs = 0; -} - - -dObStack::~dObStack() -{ - // free all arenas - Arena *a,*nexta; - a = first; - while (a) { - nexta = a->next; - dFree (a,dOBSTACK_ARENA_SIZE); - a = nexta; - } -} - - -void *dObStack::alloc (int num_bytes) -{ - if (num_bytes > MAX_ALLOC_SIZE) dDebug (0,"num_bytes too large"); - - // allocate or move to a new arena if necessary - if (!first) { - // allocate the first arena if necessary - first = last = (Arena *) dAlloc (dOBSTACK_ARENA_SIZE); - first->next = 0; - first->used = sizeof (Arena); - ROUND_UP_OFFSET_TO_EFFICIENT_SIZE (first,first->used); - } - else { - // we already have one or more arenas, see if a new arena must be used - if ((last->used + num_bytes) > dOBSTACK_ARENA_SIZE) { - if (!last->next) { - last->next = (Arena *) dAlloc (dOBSTACK_ARENA_SIZE); - last->next->next = 0; - } - last = last->next; - last->used = sizeof (Arena); - ROUND_UP_OFFSET_TO_EFFICIENT_SIZE (last,last->used); - } - } - - // allocate an area in the arena - char *c = ((char*) last) + last->used; - last->used += num_bytes; - ROUND_UP_OFFSET_TO_EFFICIENT_SIZE (last,last->used); - return c; -} - - -void dObStack::freeAll() -{ - last = first; - if (first) { - first->used = sizeof(Arena); - ROUND_UP_OFFSET_TO_EFFICIENT_SIZE (first,first->used); - } -} - - -void *dObStack::rewind() -{ - current_arena = first; - current_ofs = sizeof (Arena); - if (current_arena) { - ROUND_UP_OFFSET_TO_EFFICIENT_SIZE (current_arena,current_ofs) - return ((char*) current_arena) + current_ofs; - } - else return 0; -} - - -void *dObStack::next (int num_bytes) -{ - // this functions like alloc, except that no new storage is ever allocated - if (!current_arena) return 0; - current_ofs += num_bytes; - ROUND_UP_OFFSET_TO_EFFICIENT_SIZE (current_arena,current_ofs); - if (current_ofs >= current_arena->used) { - current_arena = current_arena->next; - if (!current_arena) return 0; - current_ofs = sizeof (Arena); - ROUND_UP_OFFSET_TO_EFFICIENT_SIZE (current_arena,current_ofs); - } - return ((char*) current_arena) + current_ofs; -} |