oysteikt/mpd
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music_buffer: poison unallocated chunks

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When a music chunk is freed (returned to the buffer), poison its
memory.
This commit is contained in:
Max Kellermann
2009-03-09 19:11:10 +01:00
parent 940af669b3
commit c5c86452ce
1 changed files with 5 additions and 0 deletions
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5
src/buffer.c
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@@ -18,6 +18,7 @@
#include "buffer.h" #include "buffer.h"
#include "chunk.h" #include "chunk.h"
#include "poison.h"
#include <glib.h> #include <glib.h>
@@ -51,10 +52,12 @@ music_buffer_new(unsigned num_chunks)
buffer->num_chunks = num_chunks; buffer->num_chunks = num_chunks;
chunk = buffer->available = buffer->chunks; chunk = buffer->available = buffer->chunks;
poison_undefined(chunk, sizeof(*chunk));
for (unsigned i = 1; i < num_chunks; ++i) { for (unsigned i = 1; i < num_chunks; ++i) {
chunk->next = &buffer->chunks[i]; chunk->next = &buffer->chunks[i];
chunk = chunk->next; chunk = chunk->next;
poison_undefined(chunk, sizeof(*chunk));
} }
chunk->next = NULL; chunk->next = NULL;
@@ -116,6 +119,8 @@ music_buffer_return(struct music_buffer *buffer, struct music_chunk *chunk)
g_mutex_lock(buffer->mutex); g_mutex_lock(buffer->mutex);
music_chunk_free(chunk); music_chunk_free(chunk);
poison_undefined(chunk, sizeof(*chunk));
chunk->next = buffer->available; chunk->next = buffer->available;
buffer->available = chunk; buffer->available = chunk;