[vlc-commits] compat: add clock_getres for darwin
Marvin Scholz
git at videolan.org
Tue Mar 24 20:10:42 CET 2020
vlc | branch: master | Marvin Scholz <epirat07 at gmail.com> | Sun Mar 22 09:19:50 2020 +0100| [9999b4f54c6b01e09185fbdf612ebc68f66d0c0c] | committer: Marvin Scholz
compat: add clock_getres for darwin
> http://git.videolan.org/gitweb.cgi/vlc.git/?a=commit;h=9999b4f54c6b01e09185fbdf612ebc68f66d0c0c
---
compat/clock_getres.c | 54 +++++++++++++++++++++++++++++++++++++++++++++++++++
configure.ac | 2 +-
include/vlc_fixups.h | 3 +++
3 files changed, 58 insertions(+), 1 deletion(-)
diff --git a/compat/clock_getres.c b/compat/clock_getres.c
new file mode 100644
index 0000000000..b30bcdc96b
--- /dev/null
+++ b/compat/clock_getres.c
@@ -0,0 +1,54 @@
+/*****************************************************************************
+ * clock_getres.c: POSIX clock_getres() replacement
+ *****************************************************************************
+ * Copyright © 2020 VLC authors and VideoLAN
+ *
+ * Author: Marvin Scholz <epirat07 at gmail dot com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation; either version 2.1 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
+ *****************************************************************************/
+
+#ifdef __APPLE__
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <sys/errno.h>
+#include <sys/types.h>
+#include <sys/time.h>
+#include <mach/clock_types.h>
+
+int clock_getres(clockid_t clock_id, struct timespec *tp)
+{
+ switch (clock_id) {
+ case CLOCK_MONOTONIC:
+ case CLOCK_REALTIME:
+ // For realtime, it is using gettimeofday and for
+ // the monotonic time it is relative to the system
+ // boot time. Both of these use timeval, which has
+ // at best microsecond precision.
+ tp->tv_sec = 0;
+ tp->tv_nsec = NSEC_PER_USEC;
+ break;
+ default:
+ errno = EINVAL;
+ return -1;
+ }
+
+ return 0;
+}
+
+#endif
diff --git a/configure.ac b/configure.ac
index 1dedd7c7a6..b52cb8ce8d 100644
--- a/configure.ac
+++ b/configure.ac
@@ -930,7 +930,7 @@ AC_SUBST([LIBRT])
dnl Check for clock_* functions, needs to be done here,
dnl after the -lrt check
-AC_REPLACE_FUNCS([clock_gettime clock_nanosleep])
+AC_REPLACE_FUNCS([clock_gettime clock_nanosleep clock_getres])
dnl
dnl Check for headers
diff --git a/include/vlc_fixups.h b/include/vlc_fixups.h
index a296db0c32..25c7de473e 100644
--- a/include/vlc_fixups.h
+++ b/include/vlc_fixups.h
@@ -672,6 +672,9 @@ FILE *vlc_win32_tmpfile(void);
# ifndef HAVE_CLOCK_GETTIME
int clock_gettime(clockid_t clock_id, struct timespec *tp);
# endif
+# ifndef HAVE_CLOCK_GETRES
+int clock_getres(clockid_t clock_id, struct timespec *tp);
+# endif
# ifndef HAVE_CLOCK_NANOSLEEP
int clock_nanosleep(clockid_t clock_id, int flags,
const struct timespec *rqtp, struct timespec *rmtp);
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