[PATCH v4 10/15] selftests: futex2: Add wouldblock test

André Almeida
2021-06-03T20:01:19Z

Adapt existing futex wait wouldblock file to test the same mechanism for
futex2.

Signed-off-by: André Almeida <andrealmeid@collabora.com>
---
.../futex/functional/futex_wait_wouldblock.c | 33 ++++++++++++++++---
1 file changed, 29 insertions(+), 4 deletions(-)

diff --git a/tools/testing/selftests/futex/functional/futex_wait_wouldblock.c b/tools/testing/selftests/futex/functional/futex_wait_wouldblock.c
index 0ae390ff8164..510a98320248 100644
--- a/tools/testing/selftests/futex/functional/futex_wait_wouldblock.c
+++ b/tools/testing/selftests/futex/functional/futex_wait_wouldblock.c
@@ -12,6 +12,7 @@
*
* HISTORY
* 2009-Nov-14: Initial version by Gowrishankar <gowrishankar.m@in.ibm.com>
+ * 2021-Feb-5: Add futex2 test by André <andrealmeid@collabora.com>
*
*****************************************************************************/

@@ -21,7 +22,7 @@
#include <stdlib.h>
#include <string.h>
#include <time.h>
-#include "futextest.h"
+#include "futex2test.h"
#include "logging.h"

#define TEST_NAME "futex-wait-wouldblock"
@@ -39,6 +40,7 @@ void usage(char *prog)
int main(int argc, char *argv[])
{
struct timespec to = {.tv_sec = 0, .tv_nsec = timeout_ns};
+ struct timespec64 to64;
futex_t f1 = FUTEX_INITIALIZER;
int res, ret = RET_PASS;
int c;
@@ -61,18 +63,41 @@ int main(int argc, char *argv[])
}

ksft_print_header();
- ksft_set_plan(1);
+ ksft_set_plan(2);
ksft_print_msg("%s: Test the unexpected futex value in FUTEX_WAIT\n",
basename(argv[0]));

info("Calling futex_wait on f1: %u @ %p with val=%u\n", f1, &f1, f1+1);
res = futex_wait(&f1, f1+1, &to, FUTEX_PRIVATE_FLAG);
if (!res || errno != EWOULDBLOCK) {
- fail("futex_wait returned: %d %s\n",
+ ksft_test_result_fail("futex_wait returned: %d %s\n",
res ? errno : res, res ? strerror(errno) : "");
ret = RET_FAIL;
+ } else {
+ ksft_test_result_pass("futex_wait wouldblock\n");
}

- print_result(TEST_NAME, ret);
+ /* setting absolute timeout for futex2 */
+ if (gettime64(CLOCK_MONOTONIC, &to64))
+ error("gettime64 failed\n", errno);
+
+ to64.tv_nsec += timeout_ns;
+
+ if (to64.tv_nsec >= 1000000000) {
+ to64.tv_sec++;
+ to64.tv_nsec -= 1000000000;
+ }
+
+ info("Calling futex2_wait on f1: %u @ %p with val=%u\n", f1, &f1, f1+1);
+ res = futex2_wait(&f1, f1+1, FUTEX_32, &to64);
+ if (!res || errno != EWOULDBLOCK) {
+ ksft_test_result_fail("futex2_wait returned: %d %s\n",
+ res ? errno : res, res ? strerror(errno) : "");
+ ret = RET_FAIL;
+ } else {
+ ksft_test_result_pass("futex2_wait wouldblock\n");
+ }
+
+ ksft_print_cnts();
return ret;
}
--
2.31.1