The container test program writes audio data frame to file, and read
them from the file, then validate them. For the operations, usage of
any in-memory file is good to shorten time of overall operations.
This commit uses shm via memfd_create(). As a result, overall time to
run is shorten one half of before, depending on machine environment.
I note that we can achieve the same result by using O_TMPFILE flag in
open(2) system call, however the implementation of O_TMPFILE is to add
i-node without name on underling file system, thus it has overhead
depending on implementation in each file system. On the other hand,
memfd_create() is directly relevant to shm and expected to be less
overhead.
Signed-off-by: Takashi Sakamoto <o-takashi@xxxxxxxxxxxxx>
---
axfer/test/container-test.c | 17 +++++++++++++----
1 file changed, 13 insertions(+), 4 deletions(-)
diff --git a/axfer/test/container-test.c b/axfer/test/container-test.c
index 4d825b6..4e2dcc2 100644
--- a/axfer/test/container-test.c
+++ b/axfer/test/container-test.c
@@ -6,11 +6,20 @@
//
// Licensed under the terms of the GNU General Public License, version 2.
+#include <aconfig.h>
+#ifdef HAVE_MEMFD_CREATE
+#define _GNU_SOURCE
+#endif
+
#include "../container.h"
#include "../misc.h"
#include "generator.h"
+#ifdef HAVE_MEMFD_CREATE
+#include <sys/mman.h>
+#endif
+
#include <stdlib.h>
#include <unistd.h>
#include <stdbool.h>
@@ -142,16 +151,17 @@ static int callback(struct test_generator *gen, snd_pcm_access_t access,
if (buf == NULL)
return -ENOMEM;
- // Remove a result of a previous trial.
- unlink(name);
-
for (i = 0; i < ARRAY_SIZE(entries); ++i) {
int fd;
off64_t pos;
frames_per_second = entries[i];
+#ifdef HAVE_MEMFD_CREATE
+ fd = memfd_create(name, 0);
+#else
fd = open(name, O_RDWR | O_CREAT | O_TRUNC, 0644);
+#endif
if (fd < 0) {
err = -errno;
break;
@@ -176,7 +186,6 @@ static int callback(struct test_generator *gen, snd_pcm_access_t access,
assert(err == 0);
close(fd);
- unlink(name);
}
free(buf);
--
2.27.0
