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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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* 2005-01-10 Paul McCullagh
*
* H&G2JCtL
*/
#include "xt_config.h"
#include "pthread_xt.h"
#include "heap_xt.h"
#include "thread_xt.h"
#ifdef xt_heap_new
#undef xt_heap_new
#endif
#ifdef DEBUG_MEMORY
xtPublic XTHeapPtr xt_mm_heap_new(XTThreadPtr self, size_t size, XTFinalizeFunc finalize, u_int line, c_char *file, xtBool track)
#else
xtPublic XTHeapPtr xt_heap_new(XTThreadPtr self, size_t size, XTFinalizeFunc finalize)
#endif
{
volatile XTHeapPtr hp;
#ifdef DEBUG_MEMORY
hp = (XTHeapPtr) xt_mm_calloc(self, size, line, file);
hp->h_track = track;
if (track)
printf("HEAP: +1 1 %s:%d\n", file, (int) line);
#else
hp = (XTHeapPtr) xt_calloc(self, size);
#endif
if (!hp)
return NULL;
try_(a) {
xt_spinlock_init_with_autoname(self, &hp->h_lock);
}
catch_(a) {
xt_free(self, hp);
throw_();
}
cont_(a);
hp->h_ref_count = 1;
hp->h_finalize = finalize;
hp->h_onrelease = NULL;
return hp;
}
xtPublic void xt_check_heap(XTThreadPtr XT_NDEBUG_UNUSED(self), XTHeapPtr XT_NDEBUG_UNUSED(hp))
{
#ifdef DEBUG_MEMORY
xt_mm_malloc_size(self, hp);
#endif
}
#ifdef DEBUG_MEMORY
xtPublic void xt_mm_heap_reference(XTThreadPtr XT_UNUSED(self), XTHeapPtr hp, u_int line, c_char *file)
#else
xtPublic void xt_heap_reference(XTThreadPtr, XTHeapPtr hp)
#endif
{
xt_spinlock_lock(&hp->h_lock);
#ifdef DEBUG_MEMORY
if (hp->h_track)
printf("HEAP: +1 %d->%d %s:%d\n", (int) hp->h_ref_count, (int) hp->h_ref_count+1, file, (int) line);
#endif
hp->h_ref_count++;
xt_spinlock_unlock(&hp->h_lock);
}
xtPublic void xt_heap_release(XTThreadPtr self, XTHeapPtr hp)
{
if (!hp)
return;
#ifdef DEBUG_MEMORY
xt_spinlock_lock(&hp->h_lock);
ASSERT(hp->h_ref_count != 0);
xt_spinlock_unlock(&hp->h_lock);
#endif
xt_spinlock_lock(&hp->h_lock);
if (hp->h_onrelease)
(*hp->h_onrelease)(self, hp);
if (hp->h_ref_count > 0) {
#ifdef DEBUG_MEMORY
if (hp->h_track)
printf("HEAP: -1 %d->%d\n", (int) hp->h_ref_count, (int) hp->h_ref_count-1);
#endif
hp->h_ref_count--;
if (hp->h_ref_count == 0) {
if (hp->h_finalize)
(*hp->h_finalize)(self, hp);
xt_spinlock_unlock(&hp->h_lock);
xt_spinlock_free(NULL, &hp->h_lock);
xt_free(self, hp);
return;
}
}
xt_spinlock_unlock(&hp->h_lock);
}
xtPublic void xt_heap_set_release_callback(XTThreadPtr XT_UNUSED(self), XTHeapPtr hp, XTFinalizeFunc onrelease)
{
hp->h_onrelease = onrelease;
}
xtPublic u_int xt_heap_get_ref_count(struct XTThread *XT_UNUSED(self), XTHeapPtr hp)
{
return hp->h_ref_count;
}
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