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Telegram/ThirdParty/dispatch/private/time_private.h

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+/*
+ * Copyright (c) 20017 Apple Inc. All rights reserved.
+ *
+ * @APPLE_APACHE_LICENSE_HEADER_START@
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * @APPLE_APACHE_LICENSE_HEADER_END@
+ */
+
+/*
+ * IMPORTANT: This header file describes INTERNAL interfaces to libdispatch
+ * which are subject to change in future releases. Any applications relying on
+ * these interfaces WILL break.
+ */
+
+#ifndef __DISPATCH_TIME_PRIVATE__
+#define __DISPATCH_TIME_PRIVATE__
+
+#ifndef __DISPATCH_INDIRECT__
+#error "Please #include <dispatch/private.h> instead of this file directly."
+#include <dispatch/base.h> // for HeaderDoc
+#endif
+
+/*
+ * @constant DISPATCH_MONOTONICTIME_NOW
+ * A dispatch_time_t value that corresponds to the current value of the
+ * platform's monotonic clock. On Apple platforms, this clock is based on
+ * mach_continuous_time(). Use this value with the dispatch_time() function to
+ * derive a time value for a timer in monotonic time (i.e. a timer that
+ * continues to tick while the system is asleep). For example:
+ *
+ * dispatch_time_t t = dispatch_time(DISPATCH_MONOTONICTIME_NOW,5*NSEC_PER_SEC);
+ * dispatch_source_t ds = dispatch_source_create(DISPATCH_SOURCE_TYPE_TIMER,
+ *			0, 0, q);
+ * dispatch_source_set_event_handler(ds, ^{ ...  });
+ * dispatch_source_set_timer(ds, t, 10 * NSEC_PER_SEC, 0);
+ * dispatch_activate(ds);
+ */
+enum {
+	DISPATCH_MONOTONICTIME_NOW DISPATCH_ENUM_API_AVAILABLE(macos(10.14), ios(12.0), tvos(12.0), watchos(5.0)) = (1ull << 63)
+};
+
+#ifdef __APPLE__
+
+// Helper macros for up time, montonic time and wall time.
+#define _dispatch_uptime_after_nsec(t) \
+		dispatch_time(DISPATCH_TIME_NOW, (t))
+#define _dispatch_uptime_after_usec(t) \
+		dispatch_time(DISPATCH_TIME_NOW, (t) * NSEC_PER_USEC)
+#define _dispatch_uptime_after_msec(t) \
+		dispatch_time(DISPATCH_TIME_NOW, (t) * NSEC_PER_MSEC)
+#define _dispatch_uptime_after_sec(t) \
+		dispatch_time(DISPATCH_TIME_NOW, (t) * NSEC_PER_SEC)
+
+#define _dispatch_monotonictime_after_nsec(t) \
+		dispatch_time(DISPATCH_MONOTONICTIME_NOW, (t))
+#define _dispatch_monotonictime_after_usec(t) \
+		dispatch_time(DISPATCH_MONOTONICTIME_NOW, (t) * NSEC_PER_USEC)
+#define _dispatch_monotonictime_after_msec(t) \
+		dispatch_time(DISPATCH_MONOTONICTIME_NOW, (t) * NSEC_PER_MSEC)
+#define _dispatch_monotonictime_after_sec(t) \
+		dispatch_time(DISPATCH_MONOTONICTIME_NOW, (t) * NSEC_PER_SEC)
+
+#define _dispatch_walltime_after_nsec(t) \
+		dispatch_time(DISPATCH_WALLTIME_NOW, (t))
+#define _dispatch_walltime_after_usec(t) \
+		dispatch_time(DISPATCH_WALLTIME_NOW, (t) * NSEC_PER_USEC)
+#define _dispatch_walltime_after_msec(t) \
+		dispatch_time(DISPATCH_WALLTIME_NOW, (t) * NSEC_PER_MSEC)
+#define _dispatch_walltime_after_sec(t) \
+		dispatch_time(DISPATCH_WALLTIME_NOW, (t) * NSEC_PER_SEC)
+
+#endif // __APPLE__
+
+#endif
+