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- Explicitly set buffer fields to default values instead of using memset, this seems to speed up buffer allocation by...

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Original commit message from CVS:
- Explicitly set buffer fields to default values instead of using memset,
this seems to speed up buffer allocation by at least 30%
This commit is contained in:
Wim Taymans 2003-05-06 21:03:34 +00:00
parent 50351bc28d
commit 1dc969236f
1 changed files with 33 additions and 16 deletions
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49
gst/gstbuffer.c
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@ -150,15 +150,26 @@ gst_buffer_default_copy (GstBuffer *buffer)
g_return_val_if_fail (buffer != NULL, NULL); g_return_val_if_fail (buffer != NULL, NULL);
/* create a fresh new buffer */ /* create a fresh new buffer */
copy = gst_buffer_new (); copy = gst_mem_chunk_alloc (chunk);
#ifndef GST_DISABLE_TRACE
gst_alloc_trace_new (_gst_buffer_trace, copy);
#endif
_GST_DATA_INIT (GST_DATA (copy),
_gst_buffer_type,
0,
(GstDataFreeFunction) gst_buffer_default_free,
(GstDataCopyFunction) gst_buffer_default_copy);
/* we simply copy everything from our parent */ /* we simply copy everything from our parent */
GST_BUFFER_DATA (copy) = g_memdup (GST_BUFFER_DATA (buffer), GST_BUFFER_DATA (copy) = g_memdup (GST_BUFFER_DATA (buffer),
GST_BUFFER_SIZE (buffer)); GST_BUFFER_SIZE (buffer));
GST_BUFFER_SIZE (copy) = GST_BUFFER_SIZE (buffer); GST_BUFFER_SIZE (copy) = GST_BUFFER_SIZE (buffer);
GST_BUFFER_MAXSIZE (copy) = GST_BUFFER_MAXSIZE (buffer); GST_BUFFER_MAXSIZE (copy) = GST_BUFFER_MAXSIZE (buffer);
GST_BUFFER_TIMESTAMP (copy) = GST_BUFFER_TIMESTAMP (buffer); GST_BUFFER_TIMESTAMP (copy) = GST_BUFFER_TIMESTAMP (buffer);
GST_BUFFER_OFFSET (copy) = GST_BUFFER_OFFSET (buffer); GST_BUFFER_OFFSET (copy) = GST_BUFFER_OFFSET (buffer);
GST_BUFFER_BUFFERPOOL (copy) = NULL;
GST_BUFFER_POOL_PRIVATE (copy) = NULL;
return copy; return copy;
} }
@ -188,7 +199,13 @@ gst_buffer_new (void)
(GstDataFreeFunction) gst_buffer_default_free, (GstDataFreeFunction) gst_buffer_default_free,
(GstDataCopyFunction) gst_buffer_default_copy); (GstDataCopyFunction) gst_buffer_default_copy);
GST_BUFFER_TIMESTAMP (buf) = GST_CLOCK_TIME_NONE; GST_BUFFER_DATA (buf) = NULL;
GST_BUFFER_SIZE (buf) = 0;
GST_BUFFER_MAXSIZE (buf) = 0;
GST_BUFFER_TIMESTAMP (buf) = GST_CLOCK_TIME_NONE;
GST_BUFFER_OFFSET (buf) = 0;
GST_BUFFER_BUFFERPOOL (buf) = NULL;
GST_BUFFER_POOL_PRIVATE (buf) = NULL;
return buf; return buf;
} }
@ -285,7 +302,7 @@ gst_buffer_create_sub (GstBuffer *parent, guint offset, guint size)
GST_DATA_FLAG_SET (parent, GST_DATA_READONLY); GST_DATA_FLAG_SET (parent, GST_DATA_READONLY);
/* create the new buffer */ /* create the new buffer */
buffer = gst_mem_chunk_alloc0 (chunk); buffer = gst_mem_chunk_alloc (chunk);
#ifndef GST_DISABLE_TRACE #ifndef GST_DISABLE_TRACE
gst_alloc_trace_new (_gst_buffer_trace, buffer); gst_alloc_trace_new (_gst_buffer_trace, buffer);
#endif #endif
@ -301,14 +318,14 @@ gst_buffer_create_sub (GstBuffer *parent, guint offset, guint size)
(GstDataFreeFunction) _gst_buffer_sub_free, (GstDataFreeFunction) _gst_buffer_sub_free,
(GstDataCopyFunction) gst_buffer_default_copy); (GstDataCopyFunction) gst_buffer_default_copy);
GST_BUFFER_OFFSET (buffer) = parent_offset + offset;
GST_BUFFER_TIMESTAMP (buffer) = -1;
GST_BUFFER_BUFFERPOOL (buffer) = NULL;
GST_BUFFER_POOL_PRIVATE (buffer) = parent;
/* set the right values in the child */ /* set the right values in the child */
buffer->data = buffer_data; GST_BUFFER_DATA (buffer) = buffer_data;
buffer->size = size; GST_BUFFER_SIZE (buffer) = size;
GST_BUFFER_MAXSIZE (buffer) = size;
GST_BUFFER_TIMESTAMP (buffer) = GST_CLOCK_TIME_NONE;
GST_BUFFER_OFFSET (buffer) = parent_offset + offset;
GST_BUFFER_BUFFERPOOL (buffer) = NULL;
GST_BUFFER_POOL_PRIVATE (buffer) = parent;
return buffer; return buffer;
} }