Create and listen to socket + do not use deprecated usleep

Signed-off-by: Mattias Andrée <maandree@kth.se>

1 files changed, 19 insertions, 0 deletions

diff --git a/src/util.c b/src/util.c
index 715aa6b..81926c6 100644
--- a/src/util.c
+++ b/src/util.c
@@ -21,6 +21,7 @@
 #include <errno.h>
 #include <stdlib.h>
 #include <string.h>
+#include <time.h>
 #include <unistd.h>
 
 
@@ -133,3 +134,21 @@ int dup2atleast(int fd, int atleast)
   return new;
 }
 
+
+/**
+ * Perform a timed suspention of the process.
+ * The process resumes when the timer expires,
+ * or when it is interrupted.
+ * 
+ * @param  ms  The number of milliseconds to sleep,
+ *             must be less than 1000
+ */
+void msleep(int ms)
+{
+  struct timespec ts;
+  ts.tv_sec = 0;
+  ts.tv_nsec = (long)ms * 1000000L;
+  if (clock_nanosleep(CLOCK_MONOTONIC, 0, &ts, NULL) == ENOTSUP)
+    nanosleep(&ts, NULL);
+}
+