124 lines
3.7 KiB
C
124 lines
3.7 KiB
C
/**
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* @file NCDBuf.c
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* @author Ambroz Bizjak <ambrop7@gmail.com>
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*
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* @section LICENSE
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the author nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "NCDBuf.h"
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#include <misc/balloc.h>
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#include <misc/offset.h>
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#include <misc/debug.h>
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static void ref_target_func_release (BRefTarget *ref_target)
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{
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NCDBuf *o = UPPER_OBJECT(ref_target, NCDBuf, ref_target);
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NCDBufStore *store = o->store;
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if (store) {
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LinkedList0_Remove(&store->used_bufs_list, &o->list_node);
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LinkedList0_Prepend(&store->free_bufs_list, &o->list_node);
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} else {
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BFree(o);
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}
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}
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void NCDBufStore_Init (NCDBufStore *o, size_t buf_size)
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{
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o->buf_size = buf_size;
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LinkedList0_Init(&o->used_bufs_list);
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LinkedList0_Init(&o->free_bufs_list);
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DebugObject_Init(&o->d_obj);
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}
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void NCDBufStore_Free (NCDBufStore *o)
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{
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DebugObject_Free(&o->d_obj);
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LinkedList0Node *ln;
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ln = LinkedList0_GetFirst(&o->used_bufs_list);
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while (ln) {
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NCDBuf *buf = UPPER_OBJECT(ln, NCDBuf, list_node);
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ASSERT(buf->store == o)
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buf->store = NULL;
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ln = LinkedList0Node_Next(ln);
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}
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ln = LinkedList0_GetFirst(&o->free_bufs_list);
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while (ln) {
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LinkedList0Node *next_ln = LinkedList0Node_Next(ln);
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NCDBuf *buf = UPPER_OBJECT(ln, NCDBuf, list_node);
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ASSERT(buf->store == o)
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BFree(buf);
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ln = next_ln;
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}
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}
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size_t NCDBufStore_BufSize (NCDBufStore *o)
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{
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DebugObject_Access(&o->d_obj);
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return o->buf_size;
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}
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NCDBuf * NCDBufStore_GetBuf (NCDBufStore *o)
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{
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DebugObject_Access(&o->d_obj);
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NCDBuf *buf;
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LinkedList0Node *ln = LinkedList0_GetFirst(&o->free_bufs_list);
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if (ln) {
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buf = UPPER_OBJECT(ln, NCDBuf, list_node);
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ASSERT(buf->store == o)
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LinkedList0_Remove(&o->free_bufs_list, &buf->list_node);
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} else {
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bsize_t size = bsize_add(bsize_fromsize(sizeof(NCDBuf)), bsize_fromsize(o->buf_size));
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buf = BAllocSize(size);
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if (!buf) {
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return NULL;
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}
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buf->store = o;
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}
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LinkedList0_Prepend(&o->used_bufs_list, &buf->list_node);
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BRefTarget_Init(&buf->ref_target, ref_target_func_release);
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return buf;
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}
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BRefTarget * NCDBuf_RefTarget (NCDBuf *o)
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{
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return &o->ref_target;
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}
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char * NCDBuf_Data (NCDBuf *o)
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{
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return o->data;
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}
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