POSIX Asynchronous I/O support: other files

Updates to misc files to integrate AIO into the Cygwin source tree.
Much of it has to be done when adding any new syscalls.  There are
some updates to limits.h for AIO-specific limits.  And some doc mods.

winsup/cygwin/Makefile.in

@@ -249,6 +249,7 @@ MATH_OFILES:= \
 
 DLL_OFILES:= \
 	advapi32.o \
+	aio.o \
 	arc4random_stir.o \
 	assert.o \
 	autoload.o \

winsup/cygwin/common.din

@@ -195,6 +195,13 @@ acosh NOSIGFE
 acoshf NOSIGFE
 acoshl NOSIGFE
 acosl NOSIGFE
+aio_cancel SIGFE
+aio_error NOSIGFE
+aio_fsync SIGFE
+aio_read SIGFE
+aio_return NOSIGFE
+aio_suspend SIGFE
+aio_write SIGFE
 alarm SIGFE
 aligned_alloc SIGFE
 alphasort NOSIGFE
@@ -843,6 +850,7 @@ lgammal_r NOSIGFE
 lgetxattr SIGFE
 link SIGFE
 linkat SIGFE
+lio_listio SIGFE
 listen = cygwin_listen SIGFE
 listxattr SIGFE
 llabs NOSIGFE

winsup/cygwin/include/cygwin/version.h

@@ -494,14 +494,16 @@ details. */
   323: scanf %l[ conversion.
   324: Export sigtimedwait.
   325: Export catclose, catgets, catopen.
-  326: Export clearenv
+  326: Export clearenv.
   327: Export pthread_tryjoin_np, pthread_timedjoin_np.
+  328: Export aio_cancel, aio_error, aio_fsync, aio_read, aio_return,
+       aio_suspend, aio_write, lio_listio.
 
   Note that we forgot to bump the api for ualarm, strtoll, strtoull,
   sigaltstack, sethostname. */
 
 #define CYGWIN_VERSION_API_MAJOR 0
-#define CYGWIN_VERSION_API_MINOR 327
+#define CYGWIN_VERSION_API_MINOR 328
 
 /* There is also a compatibity version number associated with the shared memory
    regions.  It is incremented when incompatible changes are made to the shared

winsup/cygwin/include/limits.h

@@ -147,7 +147,7 @@ details. */
 
 /* Runtime Invariant Values */
 
-/* Please note that symbolic names shall be ommited, on specific
+/* Please note that symbolic names shall be omitted, on specific
    implementations where the corresponding value is equal to or greater
    than the stated minimum, but is unspecified.  This indetermination
    might depend on the amount of available memory space on a specific
@@ -155,19 +155,16 @@ details. */
    a specific instance shall be provided by the sysconf() function. */
 
 /* Maximum number of I/O operations in a single list I/O call supported by
-   the implementation.  Not yet implemented. */
+   the implementation. */
-#undef AIO_LISTIO_MAX
+#define AIO_LISTIO_MAX 32
-/* #define AIO_LISTIO_MAX >= _POSIX_AIO_LISTIO_MAX */
 
 /* Maximum number of outstanding asynchronous I/O operations supported by
-   the implementation.  Not yet implemented. */
+   the implementation. */
-#undef AIO_MAX
+#define AIO_MAX 8
-/*  #define AIO_MAX >= _POSIX_AIO_MAX */
 
 /* The maximum amount by which a process can decrease its asynchronous I/O
-   priority level from its own scheduling priority. */
+   priority level from its own scheduling priority. Not yet implemented. */
-#undef AIO_PRIO_DELTA_MAX
+#define AIO_PRIO_DELTA_MAX 0
-/* #define AIO_PRIO_DELTA_MAX >= 0 */
 
 /* Maximum number of bytes in arguments and environment passed in an exec
    call.  32000 is the safe value used for Windows processes when called

winsup/cygwin/release/2.11.0

@@ -3,6 +3,10 @@ What's new:
 
 - New API: clearenv, pthread_tryjoin_np, pthread_timedjoin_np.
 
+- New APIs: aio_cancel, aio_error, aio_fsync, aio_read, aio_return,
+  aio_suspend, aio_write, lio_listio.
+  New header: <aio.h>.
+
 
 What changed:
 -------------

winsup/cygwin/sysconf.cc

@@ -541,9 +541,9 @@ static struct
   {cons, {c:_POSIX_SHARED_MEMORY_OBJECTS}},	/*  31, _SC_SHARED_MEMORY_OBJECTS */
   {cons, {c:_POSIX_SYNCHRONIZED_IO}},	/*  32, _SC_SYNCHRONIZED_IO */
   {cons, {c:_POSIX_TIMERS}},		/*  33, _SC_TIMERS */
-  {nsup, {c:0}},			/*  34, _SC_AIO_LISTIO_MAX */
+  {cons, {c:AIO_LISTIO_MAX}},		/*  34, _SC_AIO_LISTIO_MAX */
-  {nsup, {c:0}},			/*  35, _SC_AIO_MAX */
+  {cons, {c:AIO_MAX}},			/*  35, _SC_AIO_MAX */
-  {nsup, {c:0}},			/*  36, _SC_AIO_PRIO_DELTA_MAX */
+  {cons, {c:AIO_PRIO_DELTA_MAX}},	/*  36, _SC_AIO_PRIO_DELTA_MAX */
   {nsup, {c:0}},			/*  37, _SC_DELAYTIMER_MAX */
   {cons, {c:PTHREAD_KEYS_MAX}},		/*  38, _SC_THREAD_KEYS_MAX */
   {cons, {c:PTHREAD_STACK_MIN}},	/*  39, _SC_THREAD_STACK_MIN */

winsup/cygwin/thread.cc

@@ -663,7 +663,7 @@ pthread::cancel ()
    Required cancellation points:
 
     * accept ()
-    o aio_suspend ()
+    * aio_suspend ()
     * clock_nanosleep ()
     * close ()
     * connect ()
@@ -839,7 +839,7 @@ pthread::cancel ()
       ioctl ()
       link ()
       linkat ()
-    o lio_listio ()
+    * lio_listio ()
       localtime ()
       localtime_r ()
     * lockf ()

winsup/doc/new-features.xml

@@ -20,6 +20,12 @@ SO_RCVTIMEO and SO_SNDTIMEO socket options are now honored.
 New API: clearenv, pthread_tryjoin_np, pthread_timedjoin_np.
 </para></listitem>
 
+<listitem><para>
+New APIs for POSIX Asynchronous I/O: aio_cancel, aio_error, aio_fsync,
+aio_read, aio_return, aio_suspend, aio_write, lio_listio.
+New Header: &lt;aio.h&gt;.
+</para></listitem>
+
 </itemizedlist>
 
 </sect2>

winsup/doc/posix.xml

@@ -32,6 +32,13 @@ also IEEE Std 1003.1-2008 (POSIX.1-2008).</para>
     acoshf
     acoshl
     acosl
+    aio_cancel
+    aio_error
+    aio_fsync
+    aio_read
+    aio_return
+    aio_suspend
+    aio_write
     alarm
     alphasort
     asctime
@@ -491,6 +498,7 @@ also IEEE Std 1003.1-2008 (POSIX.1-2008).</para>
     lgammal
     link
     linkat
+    lio_listio
     listen
     llabs
     lldiv
@@ -1556,13 +1564,6 @@ also IEEE Std 1003.1-2008 (POSIX.1-2008).</para>
 <sect1 id="std-notimpl"><title>NOT implemented system interfaces from the Single Unix Specification, Volume 4:</title>
 
 <screen>
-    aio_cancel
-    aio_error
-    aio_fsync
-    aio_read
-    aio_return
-    aio_suspend
-    aio_write
     endnetent
     fattach
     fmtmsg
@@ -1575,7 +1576,6 @@ also IEEE Std 1003.1-2008 (POSIX.1-2008).</para>
     getnetent
     getpmsg
     isastream
-    lio_listio
     mlockall
     munlockall
     posix_mem_offset