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/* Copyright (C) 2005 PrimeBase Technologies GmbH
*
* PrimeBase XT
*
* This program 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.
*
* 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, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* 2005-01-10 Paul McCullagh
*
* H&G2JCtL
*/
#ifndef __xt_heap_h__
#define __xt_heap_h__
#include "xt_defs.h"
#include "lock_xt.h"
#include "memory_xt.h"
struct XTThread;
/*
* Heap memory has a reference count, and a lock for shared access.
* It also has a finalize routine which is called before the memory is
* freed.
*/
typedef void (*XTFinalizeFunc)(struct XTThread *self, void *heap_ptr);
typedef void (*XTOnReleaseFunc)(void *heap_ptr);
typedef struct XTHeap {
XTSpinLockRec h_lock; /* Prevent concurrent access to the heap memory: */
u_int h_ref_count; /* So we know when to free (EVERY pointer reference MUST be counted). */
XTFinalizeFunc h_finalize; /* If non-NULL, call before freeing. */
XTOnReleaseFunc h_onrelease; /* If non-NULL, call on release. */
#ifdef DEBUG
xtBool h_track;
#endif
} XTHeapRec, *XTHeapPtr;
/* Returns with reference count = 1 */
XTHeapPtr xt_heap_new(struct XTThread *self, size_t size, XTFinalizeFunc finalize);
XTHeapPtr xt_mm_heap_new(struct XTThread *self, size_t size, XTFinalizeFunc finalize, u_int line, c_char *file, xtBool track);
void xt_heap_set_release_callback(XTHeapPtr mem, XTOnReleaseFunc onrelease);
void xt_heap_reference(struct XTThread *self, XTHeapPtr mem);
void xt_mm_heap_reference(struct XTThread *self, XTHeapPtr hp, u_int line, c_char *file);
void xt_heap_release(struct XTThread *self, XTHeapPtr mem);
void xt_heap_release_ns(XTHeapPtr mem);
u_int xt_heap_get_ref_count(struct XTThread *self, XTHeapPtr mem);
void xt_check_heap(struct XTThread *self, XTHeapPtr mem);
#ifdef DEBUG_MEMORY
#define xt_heap_new(t, s, f) xt_mm_heap_new(t, s, f, __LINE__, __FILE__, FALSE)
#define xt_heap_new_track(t, s, f) xt_mm_heap_new(t, s, f, __LINE__, __FILE__, TRUE)
#define xt_heap_reference(t, s) xt_mm_heap_reference(t, s, __LINE__, __FILE__)
#define xt_heap_reference_ns(s) xt_mm_heap_reference(NULL, s, __LINE__, __FILE__)
#else
#define xt_heap_reference_ns(s) xt_heap_reference(NULL, s)
#endif
#endif
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