Merge darwin/libdispatch-806 to master and apply Linux build fixes

.gitmodules

@@ -1,6 +1,3 @@
 [submodule "libpwq"]
 	path = libpwq
 	url = https://github.com/mheily/libpwq.git
-[submodule "libkqueue"]
-	path = libkqueue
-	url = https://github.com/mheily/libkqueue.git

INSTALL.md

@@ -70,9 +70,9 @@ that includes libdispatch on Linux:
     ```
     ./swift/utils/build-toolchain local.swift
     ```
-    
+
 Note that adding libdispatch in build-presets.ini is for Linux only as Swift on macOS platforms uses the system installed libdispatch, so its not required.
-    
+
 ### Building and installing on OS X
 
 The following configure options may be of general interest:
@@ -151,9 +151,9 @@ Note that libdispatch development and testing is done only
 on Ubuntu; currently supported versions are 14.04, 15.10 and 16.04.
 
 1. The first thing to do is install required packages:
-    
+
     `sudo apt-get install autoconf libtool pkg-config clang systemtap-sdt-dev libbsd-dev`
- 
+
     Note: compiling libdispatch requires clang 3.8 or better and
 the gold linker. If the default clang on your Ubuntu version is
 too old, see http://apt.llvm.org/ to install a newer version.
@@ -168,7 +168,7 @@ to get the gold linker.
     git submodule init
     git submodule update
     ```
-    
+
 3. Build (as in the general instructions above)
 
     ```

Makefile.am

@@ -8,18 +8,13 @@ if BUILD_OWN_PTHREAD_WORKQUEUES
   MAYBE_PTHREAD_WORKQUEUES = libpwq
 endif
 
-if BUILD_OWN_KQUEUES
-  MAYBE_KQUEUES = libkqueue
-endif
-
 if BUILD_TESTS
   MAYBE_TESTS = tests
 endif
 
 SUBDIRS=						\
 	dispatch					\
 	$(MAYBE_PTHREAD_WORKQUEUES)	\
-	$(MAYBE_KQUEUES)			\
 	man							\
 	os							\
 	private						\

PATCHES

@@ -267,3 +267,48 @@ github commits starting with 29bdc2f from
 [4d58038] APPLIED rdar://27600964
 [98d0a05] APPLIED rdar://27600964
 [8976101] APPLIED rdar://27600964
+[0d9ea5f] APPLIED rdar://28486911
+[e7e9a32] APPLIED rdar://28486911
+[44174d9] APPLIED rdar://28486911
+[6402cb7] APPLIED rdar://28486911
+[e2d5eb5] APPLIED rdar://28486911
+[758bb7f] APPLIED rdar://28486911
+[4c588e9] APPLIED rdar://28486911
+[1300d06] APPLIED rdar://28486911
+[ae1f7e8] APPLIED rdar://28486911
+[40a9bfb] APPLIED rdar://28486911
+[6366081] APPLIED rdar://28486911
+[81d1d0c] APPLIED rdar://28486911
+[5526122] APPLIED rdar://28486911
+[1a7ff3f] APPLIED rdar://28486911
+[e905735] APPLIED rdar://28486911
+[7fe8323] APPLIED rdar://28486911
+[6249878] APPLIED rdar://28486911
+[20792fe] APPLIED rdar://28486911
+[3639fbe] APPLIED rdar://28486911
+[bda3baf] APPLIED rdar://28486911
+[8803d07] APPLIED rdar://28486911
+[d04a0df] APPLIED rdar://28486911
+[69d2a6a] APPLIED rdar://28486911
+[367bd95] APPLIED rdar://28486911
+[152985f] APPLIED rdar://28486911
+[ba7802e] APPLIED rdar://28486911
+[92773e0] APPLIED rdar://30568673
+[548a1b9] APPLIED rdar://30568673
+[b628e5c] APPLIED rdar://30568673
+[a055ddb] APPLIED rdar://30568673
+[012f48b] APPLIED rdar://30568673
+[353adba] APPLIED rdar://30568673
+[eb730eb] APPLIED rdar://30568673
+[ac16fbb] APPLIED rdar://30568673
+[967876e] APPLIED rdar://30568673
+[44c2291] APPLIED rdar://30568673
+[ceb1fac] APPLIED rdar://30568673
+[c95febb] APPLIED rdar://30568673
+[b6e9cf4] APPLIED rdar://30568673
+[e199473] APPLIED rdar://30568673
+[3767ac7] APPLIED rdar://30568673
+[10eb0e4] APPLIED rdar://30568673
+[787dd92] APPLIED rdar://30568673
+[ba4cac5] APPLIED rdar://30568673
+[7974138] APPLIED rdar://30568673

config/config.h

@@ -5,10 +5,18 @@
    you don't. */
 #define HAVE_DECL_CLOCK_MONOTONIC 0
 
+/* Define to 1 if you have the declaration of `CLOCK_REALTIME', and to 0 if
+   you don't. */
+#define CLOCK_REALTIME 0
+
 /* Define to 1 if you have the declaration of `CLOCK_UPTIME', and to 0 if you
    don't. */
 #define HAVE_DECL_CLOCK_UPTIME 0
 
+/* Define to 1 if you have the declaration of `HAVE_DECL_CLOCK_UPTIME_FAST',
+    and to 0 if you don't. */
+#define HAVE_DECL_CLOCK_UPTIME_FAST 0
+
 /* Define to 1 if you have the declaration of `FD_COPY', and to 0 if you
    don't. */
 #define HAVE_DECL_FD_COPY 1
@@ -57,6 +65,14 @@
  you don't. */
 #define HAVE_DECL_VQ_QUOTA 1
 
+/* Define to 1 if you have the declaration of `VQ_NEARLOWDISK', and to 0 if
+   you don't. */
+#define HAVE_DECL_VQ_NEARLOWDISK 1
+
+/* Define to 1 if you have the declaration of `VQ_DESIRED_DISK', and to 0 if
+ you don't. */
+#define HAVE_DECL_VQ_DESIRED_DISK 1
+
 /* Define to 1 if you have the <dlfcn.h> header file. */
 #define HAVE_DLFCN_H 1
 
@@ -87,6 +103,9 @@
 /* Define to 1 if you have the `mach_absolute_time' function. */
 #define HAVE_MACH_ABSOLUTE_TIME 1
 
+/* Define to 1 if you have the `mach_approximate_time' function. */
+#define HAVE_MACH_APPROXIMATE_TIME 1
+
 /* Define to 1 if you have the `mach_port_construct' function. */
 #define HAVE_MACH_PORT_CONSTRUCT 1
 

configure.ac

@@ -295,19 +295,6 @@ esac
 AC_SEARCH_LIBS(clock_gettime, rt)
 AC_SEARCH_LIBS(pthread_create, pthread)
 
-AS_IF([test -f $srcdir/libkqueue/configure.ac],
-  [AC_DEFINE(BUILD_OWN_KQUEUES, 1, [Define if building libkqueue from source])
-   ac_configure_args="--disable-libkqueue-install $ac_configure_args"
-   AC_CONFIG_SUBDIRS([libkqueue])
-   build_own_kqueues=true],
-  [build_own_kqueues=false
-   AC_CHECK_HEADER(sys/event.h, [],
-     [PKG_CHECK_MODULES(KQUEUE, libkqueue)]
-   )
-  ]
-)
-AM_CONDITIONAL(BUILD_OWN_KQUEUES, $build_own_kqueues)
-
 AC_CHECK_FUNCS([strlcpy getprogname], [],
   [PKG_CHECK_MODULES(BSD_OVERLAY, libbsd-overlay,[
     AC_DEFINE(HAVE_STRLCPY, 1, [])
@@ -423,15 +410,15 @@ AC_CHECK_FUNCS([mach_port_construct])
 #
 # Find functions and declarations we care about.
 #
-AC_CHECK_DECLS([CLOCK_UPTIME, CLOCK_MONOTONIC], [], [],
+AC_CHECK_DECLS([CLOCK_UPTIME, CLOCK_MONOTONIC, CLOCK_REALTIME, CLOCK_UPTIME_FAST], [], [],
   [[#include <time.h>]])
 AC_CHECK_DECLS([NOTE_NONE, NOTE_REAP, NOTE_REVOKE, NOTE_SIGNAL, NOTE_LOWAT], [], [],
   [[#include <sys/event.h>]])
 AC_CHECK_DECLS([FD_COPY], [], [], [[#include <sys/select.h>]])
 AC_CHECK_DECLS([SIGEMT], [], [], [[#include <signal.h>]])
-AC_CHECK_DECLS([VQ_UPDATE, VQ_VERYLOWDISK, VQ_QUOTA], [], [], [[#include <sys/mount.h>]])
+AC_CHECK_DECLS([VQ_UPDATE, VQ_VERYLOWDISK, VQ_QUOTA, VQ_NEARLOWDISK, VQ_DESIRED_DISK], [], [], [[#include <sys/mount.h>]])
 AC_CHECK_DECLS([program_invocation_short_name], [], [], [[#include <errno.h>]])
-AC_CHECK_FUNCS([pthread_key_init_np pthread_main_np mach_absolute_time malloc_create_zone sysconf])
+AC_CHECK_FUNCS([pthread_key_init_np pthread_main_np mach_absolute_time mach_approximate_time malloc_create_zone sysconf])
 
 AC_CHECK_DECLS([POSIX_SPAWN_START_SUSPENDED],
   [have_posix_spawn_start_suspended=true], [have_posix_spawn_start_suspended=false],

dispatch/base.h

@@ -204,11 +204,14 @@
 #endif
 
 #if __has_feature(enumerator_attributes)
-#define DISPATCH_ENUM_AVAILABLE_STARTING __OSX_AVAILABLE_STARTING
-#define DISPATCH_ENUM_AVAILABLE(os, version) __##os##_AVAILABLE(version)
+#define DISPATCH_ENUM_API_AVAILABLE(...) API_AVAILABLE(__VA_ARGS__)
+#define DISPATCH_ENUM_API_DEPRECATED(...) API_DEPRECATED(__VA_ARGS__)
+#define DISPATCH_ENUM_API_DEPRECATED_WITH_REPLACEMENT(...) \
+		API_DEPRECATED_WITH_REPLACEMENT(__VA_ARGS__)
 #else
-#define DISPATCH_ENUM_AVAILABLE_STARTING(...)
-#define DISPATCH_ENUM_AVAILABLE(...)
+#define DISPATCH_ENUM_API_AVAILABLE(...)
+#define DISPATCH_ENUM_API_DEPRECATED(...)
+#define DISPATCH_ENUM_API_DEPRECATED_WITH_REPLACEMENT(...)
 #endif
 
 #if defined(SWIFT_SDK_OVERLAY_DISPATCH_EPOCH) && \
@@ -243,6 +246,12 @@
 #define DISPATCH_SWIFT_NAME(_name)
 #endif
 
+#ifndef __cplusplus
+#define DISPATCH_TRANSPARENT_UNION __attribute__((__transparent_union__))
+#else
+#define DISPATCH_TRANSPARENT_UNION
+#endif
+
 typedef void (*dispatch_function_t)(void *_Nullable);
 
 #endif

dispatch/block.h

@@ -101,17 +101,17 @@ __BEGIN_DECLS
  */
 DISPATCH_ENUM(dispatch_block_flags, unsigned long,
 	DISPATCH_BLOCK_BARRIER
-			DISPATCH_ENUM_AVAILABLE_STARTING(__MAC_10_10, __IPHONE_8_0) = 0x1,
+			DISPATCH_ENUM_API_AVAILABLE(macos(10.10), ios(8.0)) = 0x1,
 	DISPATCH_BLOCK_DETACHED
-			DISPATCH_ENUM_AVAILABLE_STARTING(__MAC_10_10, __IPHONE_8_0) = 0x2,
+			DISPATCH_ENUM_API_AVAILABLE(macos(10.10), ios(8.0)) = 0x2,
 	DISPATCH_BLOCK_ASSIGN_CURRENT
-			DISPATCH_ENUM_AVAILABLE_STARTING(__MAC_10_10, __IPHONE_8_0) = 0x4,
+			DISPATCH_ENUM_API_AVAILABLE(macos(10.10), ios(8.0)) = 0x4,
 	DISPATCH_BLOCK_NO_QOS_CLASS
-			DISPATCH_ENUM_AVAILABLE_STARTING(__MAC_10_10, __IPHONE_8_0) = 0x8,
+			DISPATCH_ENUM_API_AVAILABLE(macos(10.10), ios(8.0)) = 0x8,
 	DISPATCH_BLOCK_INHERIT_QOS_CLASS
-			DISPATCH_ENUM_AVAILABLE_STARTING(__MAC_10_10, __IPHONE_8_0) = 0x10,
+			DISPATCH_ENUM_API_AVAILABLE(macos(10.10), ios(8.0)) = 0x10,
 	DISPATCH_BLOCK_ENFORCE_QOS_CLASS
-			DISPATCH_ENUM_AVAILABLE_STARTING(__MAC_10_10, __IPHONE_8_0) = 0x20,
+			DISPATCH_ENUM_API_AVAILABLE(macos(10.10), ios(8.0)) = 0x20,
 );
 
 /*!
@@ -164,7 +164,7 @@ DISPATCH_ENUM(dispatch_block_flags, unsigned long,
  * When not building with Objective-C ARC, must be released with a -[release]
  * message or the Block_release() function.
  */
-__OSX_AVAILABLE_STARTING(__MAC_10_10, __IPHONE_8_0)
+API_AVAILABLE(macos(10.10), ios(8.0))
 DISPATCH_EXPORT DISPATCH_NONNULL2 DISPATCH_RETURNS_RETAINED_BLOCK
 DISPATCH_WARN_RESULT DISPATCH_NOTHROW
 dispatch_block_t
@@ -236,7 +236,7 @@ dispatch_block_create(dispatch_block_flags_t flags, dispatch_block_t block);
  * When not building with Objective-C ARC, must be released with a -[release]
  * message or the Block_release() function.
  */
-__OSX_AVAILABLE_STARTING(__MAC_10_10, __IPHONE_8_0)
+API_AVAILABLE(macos(10.10), ios(8.0))
 DISPATCH_EXPORT DISPATCH_NONNULL4 DISPATCH_RETURNS_RETAINED_BLOCK
 DISPATCH_WARN_RESULT DISPATCH_NOTHROW
 dispatch_block_t
@@ -269,7 +269,7 @@ dispatch_block_create_with_qos_class(dispatch_block_flags_t flags,
  * @param block
  * The block to create the temporary block object from.
  */
-__OSX_AVAILABLE_STARTING(__MAC_10_10, __IPHONE_8_0)
+API_AVAILABLE(macos(10.10), ios(8.0))
 DISPATCH_EXPORT DISPATCH_NONNULL2 DISPATCH_NOTHROW
 void
 dispatch_block_perform(dispatch_block_flags_t flags,
@@ -320,7 +320,7 @@ dispatch_block_perform(dispatch_block_flags_t flags,
  * Returns zero on success (the dispatch block object completed within the
  * specified timeout) or non-zero on error (i.e. timed out).
  */
-__OSX_AVAILABLE_STARTING(__MAC_10_10, __IPHONE_8_0)
+API_AVAILABLE(macos(10.10), ios(8.0))
 DISPATCH_EXPORT DISPATCH_NONNULL1 DISPATCH_NOTHROW
 long
 dispatch_block_wait(dispatch_block_t block, dispatch_time_t timeout);
@@ -361,7 +361,7 @@ dispatch_block_wait(dispatch_block_t block, dispatch_time_t timeout);
  * @param notification_block
  * The notification block to submit when the observed block object completes.
  */
-__OSX_AVAILABLE_STARTING(__MAC_10_10, __IPHONE_8_0)
+API_AVAILABLE(macos(10.10), ios(8.0))
 DISPATCH_EXPORT DISPATCH_NONNULL_ALL DISPATCH_NOTHROW
 void
 dispatch_block_notify(dispatch_block_t block, dispatch_queue_t queue,
@@ -393,7 +393,7 @@ dispatch_block_notify(dispatch_block_t block, dispatch_queue_t queue,
  * The result of passing NULL or a block object not returned by one of the
  * dispatch_block_create* functions is undefined.
  */
-__OSX_AVAILABLE_STARTING(__MAC_10_10, __IPHONE_8_0)
+API_AVAILABLE(macos(10.10), ios(8.0))
 DISPATCH_EXPORT DISPATCH_NONNULL_ALL DISPATCH_NOTHROW
 void
 dispatch_block_cancel(dispatch_block_t block);
@@ -412,7 +412,7 @@ dispatch_block_cancel(dispatch_block_t block);
  * @result
  * Non-zero if canceled and zero if not canceled.
  */
-__OSX_AVAILABLE_STARTING(__MAC_10_10, __IPHONE_8_0)
+API_AVAILABLE(macos(10.10), ios(8.0))
 DISPATCH_EXPORT DISPATCH_NONNULL_ALL DISPATCH_WARN_RESULT DISPATCH_PURE
 DISPATCH_NOTHROW
 long