Re: [PATCH spice-server 04/10] mjpeg: Reuse realloc instead of implementing it manually

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On Mon, Sep 11, 2017 at 11:15:41AM +0100, Frediano Ziglio wrote:
> This potentially can also save the copy if there are enough
> space to resize the buffer in place.

"if there is"

Acked-by: Christophe Fergeau <cfergeau@xxxxxxxxxx>

> 
> Signed-off-by: Frediano Ziglio <fziglio@xxxxxxxxxx>
> ---
>  server/mjpeg-encoder.c | 6 +-----
>  1 file changed, 1 insertion(+), 5 deletions(-)
> 
> diff --git a/server/mjpeg-encoder.c b/server/mjpeg-encoder.c
> index 15f5e1f2f..07ca69c20 100644
> --- a/server/mjpeg-encoder.c
> +++ b/server/mjpeg-encoder.c
> @@ -278,15 +278,11 @@ static boolean empty_mem_output_buffer(j_compress_ptr cinfo)
>  
>    /* Try to allocate new buffer with double size */
>    nextsize = dest->bufsize * 2;
> -  nextbuffer = malloc(nextsize);
> +  nextbuffer = realloc(dest->buffer, nextsize);
>  
>    if (nextbuffer == NULL)
>      ERREXIT1(cinfo, JERR_OUT_OF_MEMORY, 10);
>  
> -  memcpy(nextbuffer, dest->buffer, dest->bufsize);
> -
> -  free(dest->buffer);
> -
>    dest->pub.next_output_byte = nextbuffer + dest->bufsize;
>    dest->pub.free_in_buffer = dest->bufsize;
>  
> -- 
> 2.13.5
> 
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