[libc++] Remove workarounds for the lack of clock_gettime on older macOS platforms
This increases the Mac OS requirement for building libc++ to 10.12.
Note that it doesn't change whether the *headers* still support older
platforms -- it's only that macOS >= 10.12 is required to build the
dylib from sources.
Differential Revision: https://reviews.llvm.org/D74489
Cr-Mirrored-From: https://chromium.googlesource.com/external/github.com/llvm/llvm-project
Cr-Mirrored-Commit: babd3aefc9193b44ad0620a2cfd63ebb6ad7e952
diff --git a/src/filesystem/operations.cpp b/src/filesystem/operations.cpp
index 51bd1ca..5c98671 100644
--- a/src/filesystem/operations.cpp
+++ b/src/filesystem/operations.cpp
@@ -36,13 +36,9 @@
#define _LIBCPP_USE_COPYFILE
#endif
-#if !defined(__APPLE__) && _POSIX_TIMERS > 0
-#define _LIBCPP_USE_CLOCK_GETTIME
-#endif
-
-#if !defined(CLOCK_REALTIME) || !defined(_LIBCPP_USE_CLOCK_GETTIME)
+#if !defined(CLOCK_REALTIME)
#include <sys/time.h> // for gettimeofday and timeval
-#endif // !defined(CLOCK_REALTIME)
+#endif // !defined(CLOCK_REALTIME)
#if defined(__ELF__) && defined(_LIBCPP_LINK_RT_LIB)
#pragma comment(lib, "rt")
@@ -490,7 +486,7 @@
_FilesystemClock::time_point _FilesystemClock::now() noexcept {
typedef chrono::duration<rep> __secs;
-#if defined(_LIBCPP_USE_CLOCK_GETTIME) && defined(CLOCK_REALTIME)
+#if defined(CLOCK_REALTIME)
typedef chrono::duration<rep, nano> __nsecs;
struct timespec tp;
if (0 != clock_gettime(CLOCK_REALTIME, &tp))
@@ -502,7 +498,7 @@
timeval tv;
gettimeofday(&tv, 0);
return time_point(__secs(tv.tv_sec) + __microsecs(tv.tv_usec));
-#endif // _LIBCPP_USE_CLOCK_GETTIME && CLOCK_REALTIME
+#endif // CLOCK_REALTIME
}
filesystem_error::~filesystem_error() {}