[Intel-gfx] [PATCH i-g-t] lib: Add 64-bit version of igt_assert_cmp

[Chris Wilson]

On Tue, Jun 30, 2015 at 12:31:46PM +0100, Michel Thierry wrote:
> igt_assert_cmp64 and its derivatives:
> - igt_assert_eq64
> - igt_assert_neq64
> - igt_assert_lte64
> - igt_assert_lt64
> 
> Signed-off-by: Michel Thierry <michel.thierry at intel.com>
> ---
>  lib/igt_core.h | 69 +++++++++++++++++++++++++++++++++++++++++++++++++++++-----
>  1 file changed, 63 insertions(+), 6 deletions(-)
> 
> diff --git a/lib/igt_core.h b/lib/igt_core.h
> index 2b2b6e9..dd39521 100644
> --- a/lib/igt_core.h
> +++ b/lib/igt_core.h
> @@ -333,6 +333,7 @@ void igt_exit(void) __attribute__((noreturn));
>   * Fails (sub-)test if the condition is not met
>   *
>   * Should be used everywhere where a test compares two integer values.
> + * For 64-bit values use igt_assert_cmp64().
>   *
>   * Like igt_assert(), but displays the values being compared on failure instead
>   * of simply printing the stringified expression.
> @@ -365,6 +366,24 @@ void igt_exit(void) __attribute__((noreturn));
>  	} while (0)
>  
>  /**
> + * igt_assert_cmp64:
> + * @n1: first value
> + * @cmp: compare operator
> + * @ncmp: negated version of @cmp
> + * @n2: second value
> + *
> + * Like igt_assert_cmpint(), but for long longs;
> + */
> +#define igt_assert_cmp64(n1, cmp, ncmp, n2) \
> +	do { \
> +		long long __n1 = (n1), __n2 = (n2); \
> +		if (__n1 cmp __n2) ; else \
> +		__igt_fail_assert(IGT_LOG_DOMAIN, __FILE__, __LINE__, __func__, \
> +				  #n1 " " #cmp " " #n2, \
> +				  "error: %#llx " #ncmp " %#llx\n", __n1, __n2); \
> +	} while (0)

A new igt_assert_cmp_t?

	#define igt_assert_cmp_t(T, n1, cmp, ncmp, n2) do {\
		T __n1 = (n1), __n2 = (n2); \
		if (!(__n1 cmp __n2)) \	
		__igt_fail_assert(IGT_LOG_DOMAIN, __FILE__, __LINE__, __func__, \
				  #n1 " " #cmp " " #n2, \
				  "error: %#llx " #ncmp " %#llx\n", __n1, __n2); \
	} while (0)

	#define igt_assert_cmpint(n1, cmp, ncmp, n2) \
		igt_assert_cmp_t(int, n1, cmp, ncmp, n2)

	#define igt_assert_cmp64(n1, cmp, ncmp, n2) \
		igt_assert_cmp_t(long long, n1, cmp, ncmp, n2)

That at least hides the ugliest of macros and stops it reproducing at an
alarming rate. Whether it is worth creating igt_assert_eq_t and friends
just to avoid duplicating the (cmp, ncmp) is debatable.
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre