import timespec and timespec_get into namespace std if we're under c++17 or later AND the underlying C library has them. Fixes PR#38220, but doesn't implement all of P0063 yet.

llvm-svn: 338419

1 files changed, 11 insertions, 3 deletions

diff --git a/libcxx/include/ctime b/libcxx/include/ctime
index da9e3290bbb..81cf11a466c 100644
--- a/libcxx/include/ctime
+++ b/libcxx/include/ctime
@@ -18,7 +18,8 @@ Macros:
 
     NULL
     CLOCKS_PER_SEC
-
+    TIME_UTC // C++17
+    
 namespace std
 {
 
@@ -28,7 +29,8 @@ Types:
     size_t
     time_t
     tm
-
+    timespec // C++17
+    
 clock_t clock();
 double difftime(time_t time1, time_t time0);
 time_t mktime(tm* timeptr);
@@ -39,7 +41,7 @@ tm*    gmtime(const time_t* timer);
 tm* localtime(const time_t* timer);
 size_t strftime(char* restrict s, size_t maxsize, const char* restrict format,
                 const tm* restrict timeptr);
-
+int timespec_get( struct timespec *ts, int base); // C++17
 }  // std
 
 */
@@ -57,6 +59,9 @@ using ::clock_t;
 using ::size_t;
 using ::time_t;
 using ::tm;
+#if _LIBCPP_STD_VER > 14 && defined(_LIBCPP_HAS_C11_FEATURES)
+using ::timespec;
+#endif
 using ::clock;
 using ::difftime;
 using ::mktime;
@@ -68,6 +73,9 @@ using ::gmtime;
 using ::localtime;
 #endif
 using ::strftime;
+#if _LIBCPP_STD_VER > 14 && defined(_LIBCPP_HAS_C11_FEATURES)
+using ::timespec_get;
+#endif
 
 _LIBCPP_END_NAMESPACE_STD