[cairo] [PATCH 2/3] pthread-same-source: Add a reference image generation mode

[Bryce W. Harrington]

Reviewed-by: Bryce Harrington <b.harrington at samsung.com>

On Fri, Apr 11, 2014 at 10:48:22AM +0200, Uli Schlachter wrote:
> In this mode, only a single thread is active and calling into cairo at any time.
> Thus, there can be no races between threads. Since this test is supposed to find
> races between threads, the resulting image can be used as a reference image.
> 
> Signed-off-by: Uli Schlachter <psychon at znc.in>
> ---
>  test/pthread-same-source.c | 16 +++++++++++++---
>  1 file changed, 13 insertions(+), 3 deletions(-)
> 
> diff --git a/test/pthread-same-source.c b/test/pthread-same-source.c
> index 5960ca0..9db7332 100644
> --- a/test/pthread-same-source.c
> +++ b/test/pthread-same-source.c
> @@ -28,6 +28,7 @@
>  #include <pthread.h>
>  
>  #define N_THREADS 8
> +#define GENERATE_REFERENCE 0
>  
>  #define WIDTH 64
>  #define HEIGHT 8
> @@ -136,6 +137,9 @@ draw (cairo_t *cr, int width, int height)
>      cairo_status_t status;
>      int i;
>  
> +    cairo_set_source_rgb (cr, 0.5, 0.5, 0.5);
> +    cairo_paint (cr);
> +
>      source = create_source (cairo_get_target (cr));
>      status = cairo_surface_status (source);
>      if (status) {
> @@ -157,18 +161,24 @@ draw (cairo_t *cr, int width, int height)
>              test_status = CAIRO_TEST_FAILURE;
>  	    break;
>          }
> +#if GENERATE_REFERENCE
> +	{
> +	    cairo_test_status_t status = join_thread (cr, threads[i]);
> +	    if (status != CAIRO_TEST_SUCCESS)
> +		test_status = status;
> +	}
> +#endif
>      }
>  
>      cairo_surface_destroy (source);
>  
> -    cairo_set_source_rgb (cr, 0.5, 0.5, 0.5);
> -    cairo_paint (cr);
> -
> +#if !GENERATE_REFERENCE
>      for (i = 0; i < N_THREADS; i++) {
>  	cairo_test_status_t status = join_thread (cr, threads[i]);
>  	if (status != CAIRO_TEST_SUCCESS)
>  	    test_status = status;
>      }
> +#endif
>  
>      return test_status;
>  }
> -- 
> 1.9.1
> 
> -- 
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