Merging upstream version 2.0.3+dfsg (Closes: #923993, #1042533, #1045145).

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 36 insertions, 0 deletions

diff --git a/src/libnetdata/os/sleep.c b/src/libnetdata/os/sleep.c
new file mode 100644
index 000000000..131b47c44
--- /dev/null
+++ b/src/libnetdata/os/sleep.c
@@ -0,0 +1,36 @@
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+#include "../libnetdata.h"
+
+#ifdef OS_WINDOWS
+void tinysleep(void) {
+    Sleep(1);
+}
+#else
+void tinysleep(void) {
+    static const struct timespec ns = { .tv_sec = 0, .tv_nsec = 1 };
+    nanosleep(&ns, NULL);
+}
+#endif
+
+#ifdef OS_WINDOWS
+void microsleep(usec_t ut) {
+    size_t ms = ut / USEC_PER_MS + ((ut == 0 || (ut % USEC_PER_MS)) ? 1 : 0);
+    Sleep(ms);
+}
+#else
+void microsleep(usec_t ut) {
+    time_t secs = (time_t)(ut / USEC_PER_SEC);
+    nsec_t nsec = (ut % USEC_PER_SEC) * NSEC_PER_USEC + ((ut == 0) ? 1 : 0);
+
+    struct timespec remaining = {
+        .tv_sec = secs,
+        .tv_nsec = nsec,
+    };
+
+    errno_clear();
+    while (nanosleep(&remaining, &remaining) == -1 && errno == EINTR && (remaining.tv_sec || remaining.tv_nsec)) {
+        // Loop continues if interrupted by a signal
+    }
+}
+#endif