Add an artd method to create an SDC file. am: aa405ccd29

Original change: https://android-review.googlesource.com/c/platform/art/+/3540979

Change-Id: I37d556aa308550170f8cf8ec8a0e8ccd2b99944e
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>

1 files changed, 9 insertions, 0 deletions

diff --git a/libartbase/base/time_utils.h b/libartbase/base/time_utils.h
index dd73b1c951..ddabb1289f 100644
--- a/libartbase/base/time_utils.h
+++ b/libartbase/base/time_utils.h
@@ -26,6 +26,8 @@
 #include <cstdint>
 #include <string>
 
+#include "android-base/logging.h"
+
 namespace art {
 
 enum TimeUnit {
@@ -123,6 +125,13 @@ void NanoSleep(uint64_t ns);
 // time corresponding to the indicated clock value plus the supplied offset.
 void InitTimeSpec(bool absolute, int clock, int64_t ms, int32_t ns, timespec* ts);
 
+// Converts `timespec` to nanoseconds. The return value can be negative, which should be interpreted
+// as a time before the epoch.
+static constexpr int64_t TimeSpecToNs(timespec ts) {
+  DCHECK_GE(ts.tv_nsec, 0);  // According to POSIX.
+  return static_cast<int64_t>(ts.tv_sec) * INT64_C(1000000000) + ts.tv_nsec;
+}
+
 }  // namespace art
 
 #endif  // ART_LIBARTBASE_BASE_TIME_UTILS_H_