Source release 17.1.2

util/test/test_sleep.cpp

@@ -14,6 +14,7 @@
 #endif
 
 #include <errno.h>
+#include <inttypes.h>
 #include <string.h>
 #include <unistd.h>
 
@@ -53,6 +54,18 @@ void TestSleep::Sleep(unsigned int seconds) {
   if (callback_ != nullptr) callback_->ElapseTime(milliseconds);
 }
 
+void TestSleep::SleepUntil(int64_t desired_time) {
+  SyncFakeClock();
+  const int64_t now = Clock().GetCurrentTime();
+  if (desired_time < now) {
+    LOGE("Test Clock skew sleeping from time %" PRId64 " to %" PRId64, now,
+         desired_time);
+    return;
+  }
+  const unsigned int sleep_time = static_cast<unsigned int>(desired_time - now);
+  TestSleep::Sleep(sleep_time);
+}
+
 void TestSleep::SyncFakeClock() {
   // Syncing can be done by sleeping 0 seconds.
   Sleep(0);