diff options
Diffstat (limited to '')
-rw-r--r-- | src/buffer.c | 137 |
1 files changed, 0 insertions, 137 deletions
diff --git a/src/buffer.c b/src/buffer.c deleted file mode 100644 index 559f39a9a..000000000 --- a/src/buffer.c +++ /dev/null @@ -1,137 +0,0 @@ -/* - * Copyright (C) 2003-2011 The Music Player Daemon Project - * http://www.musicpd.org - * - * 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 Street, Fifth Floor, Boston, MA 02110-1301 USA. - */ - -#include "config.h" -#include "buffer.h" -#include "chunk.h" -#include "poison.h" - -#include <glib.h> - -#include <assert.h> - -struct music_buffer { - struct music_chunk *chunks; - unsigned num_chunks; - - struct music_chunk *available; - - /** a mutex which protects #available */ - GMutex *mutex; - -#ifndef NDEBUG - unsigned num_allocated; -#endif -}; - -struct music_buffer * -music_buffer_new(unsigned num_chunks) -{ - struct music_buffer *buffer; - struct music_chunk *chunk; - - assert(num_chunks > 0); - - buffer = g_new(struct music_buffer, 1); - - buffer->chunks = g_new(struct music_chunk, num_chunks); - buffer->num_chunks = num_chunks; - - chunk = buffer->available = buffer->chunks; - poison_undefined(chunk, sizeof(*chunk)); - - for (unsigned i = 1; i < num_chunks; ++i) { - chunk->next = &buffer->chunks[i]; - chunk = chunk->next; - poison_undefined(chunk, sizeof(*chunk)); - } - - chunk->next = NULL; - - buffer->mutex = g_mutex_new(); - -#ifndef NDEBUG - buffer->num_allocated = 0; -#endif - - return buffer; -} - -void -music_buffer_free(struct music_buffer *buffer) -{ - assert(buffer->chunks != NULL); - assert(buffer->num_chunks > 0); - assert(buffer->num_allocated == 0); - - g_mutex_free(buffer->mutex); - g_free(buffer->chunks); - g_free(buffer); -} - -unsigned -music_buffer_size(const struct music_buffer *buffer) -{ - return buffer->num_chunks; -} - -struct music_chunk * -music_buffer_allocate(struct music_buffer *buffer) -{ - struct music_chunk *chunk; - - g_mutex_lock(buffer->mutex); - - chunk = buffer->available; - if (chunk != NULL) { - buffer->available = chunk->next; - music_chunk_init(chunk); - -#ifndef NDEBUG - ++buffer->num_allocated; -#endif - } - - g_mutex_unlock(buffer->mutex); - return chunk; -} - -void -music_buffer_return(struct music_buffer *buffer, struct music_chunk *chunk) -{ - assert(buffer != NULL); - assert(chunk != NULL); - - if (chunk->other != NULL) - music_buffer_return(buffer, chunk->other); - - g_mutex_lock(buffer->mutex); - - music_chunk_free(chunk); - poison_undefined(chunk, sizeof(*chunk)); - - chunk->next = buffer->available; - buffer->available = chunk; - -#ifndef NDEBUG - --buffer->num_allocated; -#endif - - g_mutex_unlock(buffer->mutex); -} |