On 10/17/2013 10:52 AM, Jordan Justen wrote:
v2:
* Use Chad's cmake detection
* return value is signed, and a negative indicates an error
Signed-off-by: Jordan Justen <[email protected]>
Cc: Chad Versace <[email protected]>
Cc: Ian Romanick <[email protected]>
---
tests/util/piglit-util.c | 20 ++++++++++++++++++++
tests/util/piglit-util.h | 10 ++++++++++
2 files changed, 30 insertions(+)
diff --git a/tests/util/piglit-util.c b/tests/util/piglit-util.c
index 71d55a7..8836978 100644
--- a/tests/util/piglit-util.c
+++ b/tests/util/piglit-util.c
@@ -33,6 +33,10 @@
#include <string.h>
#include <errno.h>
+#ifdef PIGLIT_HAS_POSIX_CLOCK_MONOTONIC
+#include <time.h>
+#endif
+
#include "config.h"
#if defined(HAVE_SYS_TIME_H) && defined(HAVE_SYS_RESOURCE_H) &&
defined(HAVE_SETRLIMIT)
#include <sys/time.h>
@@ -462,3 +466,19 @@ write_null:
va_end(va);
return size_written;
}
+
+int64_t
+piglit_get_microseconds(void)
+{
+#ifdef PIGLIT_HAS_POSIX_CLOCK_MONOTONIC
+ struct timespec t;
+ int r = clock_gettime(CLOCK_MONOTONIC, &t);
+ if (r >= 0)
+ return (t.tv_sec * 1000000) + (t.tv_nsec / 1000);
+ else
+ return -1LL;
+#else
+ return (int64_t) -1;
+#endif
+}
The two occurrences of `return -1` should appear symmetric, otherwise it
looks like the code is doing different things at each occurrence.
I don't think there's any need for the int64_t cast, but I'm not confident
of that. Do you get a warning if you remove that?
Anways, please make the returns look symmetric and this has my r-b. I think
piglit_get_microseconds() is much less cumbersome to use than the Posix
clock functions.
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