mirror of https://github.com/djcb/mu.git
95 lines
2.1 KiB
C
95 lines
2.1 KiB
C
/*
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** Copyright (C) 2011 Dirk-Jan C. Binnema <djcb@djcbsoftware.nl>
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**
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** This program is free software; you can redistribute it and/or modify it
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** under the terms of the GNU General Public License as published by the
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** Free Software Foundation; either version 3, or (at your option) any
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** later version.
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**
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** This program is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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** GNU General Public License for more details.
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**
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** You should have received a copy of the GNU General Public License
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** along with this program; if not, write to the Free Software Foundation,
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** Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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**
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*/
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#include "mu-msg-data-cache.h"
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/* we cannot use GPtrArray, because we require the index to be stable... */
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struct _MuMsgDataCache {
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MuMsgData **_data;
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guint _index, _size;
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};
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MuMsgDataCache *
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mu_msg_data_cache_new (guint32 max_size)
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{
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MuMsgDataCache *cache;
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MuMsgData **data;
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data = g_try_new0 (MuMsgData*, max_size);
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if (!data) {
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g_warning ("cannot allocate %u bytes", (unsigned)max_size);
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return NULL;
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}
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cache = g_new (MuMsgDataCache, 1);
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cache->_data = (MuMsgData**)data;
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cache->_index = 0;
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cache->_size = max_size;
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return cache;
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}
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void
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mu_msg_data_cache_destroy (MuMsgDataCache *self)
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{
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if (!self)
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return;
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mu_msg_data_cache_clear (self);
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g_free (self);
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}
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void
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mu_msg_data_cache_clear (MuMsgDataCache *self)
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{
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unsigned i;
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g_return_if_fail (self);
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for (i = 0; i != self->_index; ++i) {
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mu_msg_data_destroy (self->_data[i]);
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self->_data[i] = NULL;
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}
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self->_index = 0;
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}
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void
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mu_msg_data_cache_append (MuMsgDataCache *self, MuMsgData *data, gboolean copy)
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{
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g_return_if_fail (self);
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g_return_if_fail (self->_index < G_MAXUINT32);
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g_return_if_fail (data);
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self->_data[self->_index++] = copy ? mu_msg_data_copy (data) : data;
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}
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const MuMsgData *
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mu_msg_data_cache_get (MuMsgDataCache *self, guint index)
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{
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g_return_val_if_fail (self, NULL);
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g_return_val_if_fail (index < self->_size, NULL);
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return self->_data[index];
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}
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