--- a/src/hotspot/os/posix/os_posix.cpp Tue Oct 02 12:08:51 2018 -0700
+++ b/src/hotspot/os/posix/os_posix.cpp Tue Oct 02 17:12:13 2018 -0400
@@ -1609,10 +1609,25 @@
// This means we have clockid_t, clock_gettime et al and CLOCK_MONOTONIC
static int (*_clock_gettime)(clockid_t, struct timespec *);
+static int (*_clock_getres)(clockid_t, struct timespec *);
static int (*_pthread_condattr_setclock)(pthread_condattr_t *, clockid_t);
static bool _use_clock_monotonic_condattr;
+// Exported clock functionality
+
+int os::Posix::clock_gettime(clockid_t clock_id, struct timespec *tp) {
+ return _clock_gettime != NULL ? _clock_gettime(clock_id, tp) : -1;
+}
+
+int os::Posix::clock_getres(clockid_t clock_id, struct timespec *tp) {
+ return _clock_getres != NULL ? _clock_getres(clock_id, tp) : -1;
+}
+
+bool os::Posix::supports_monotonic_clock() {
+ return _clock_gettime != NULL;
+}
+
// Determine what POSIX API's are present and do appropriate
// configuration.
void os::Posix::init(void) {
@@ -1620,8 +1635,6 @@
// NOTE: no logging available when this is called. Put logging
// statements in init_2().
- // Copied from os::Linux::clock_init(). The duplication is temporary.
-
// 1. Check for CLOCK_MONOTONIC support.
void* handle = NULL;
@@ -1642,6 +1655,7 @@
}
_clock_gettime = NULL;
+ _clock_getres = NULL;
int (*clock_getres_func)(clockid_t, struct timespec*) =
(int(*)(clockid_t, struct timespec*))dlsym(handle, "clock_getres");
@@ -1656,6 +1670,7 @@
clock_gettime_func(CLOCK_MONOTONIC, &tp) == 0) {
// Yes, monotonic clock is supported.
_clock_gettime = clock_gettime_func;
+ _clock_getres = clock_getres_func;
} else {
#ifdef NEEDS_LIBRT
// Close librt if there is no monotonic clock.