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-rw-r--r--Changes2
-rw-r--r--ev.c24
-rw-r--r--ev.pod16
-rw-r--r--ev_win32.c4
4 files changed, 34 insertions, 12 deletions
diff --git a/Changes b/Changes
index 3191cb1..0a478fb 100644
--- a/Changes
+++ b/Changes
@@ -1,6 +1,8 @@
Revision history for libev, a high-performance and full-featured event loop.
- backport inotify code to C89.
+ - implement EV_WIN32_HANDLE_TO_FD and EV_WIN32_CLOSE_FD configuration
+ symbols to make ti easier for apps to do their own fd management.
3.8 Sun Aug 9 14:30:45 CEST 2009
- incompatible change: do not necessarily reset signal handler
diff --git a/ev.c b/ev.c
index 4e19864..1161aa3 100644
--- a/ev.c
+++ b/ev.c
@@ -478,6 +478,16 @@ static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
#endif
+#ifndef EV_FD_TO_WIN32_HANDLE
+# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
+#endif
+#ifndef EV_WIN32_HANDLE_TO_FD
+# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (fd, 0)
+#endif
+#ifndef EV_WIN32_CLOSE_FD
+# define EV_WIN32_CLOSE_FD(fd) close (fd)
+#endif
+
#ifdef _WIN32
# include "ev_win32.c"
#endif
@@ -878,11 +888,7 @@ fd_reify (EV_P)
if (events)
{
unsigned long arg;
- #ifdef EV_FD_TO_WIN32_HANDLE
- anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
- #else
- anfd->handle = _get_osfhandle (fd);
- #endif
+ anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
}
#endif
@@ -1623,8 +1629,8 @@ loop_destroy (EV_P)
if (evpipe [0] >= 0)
{
- close (evpipe [0]);
- close (evpipe [1]);
+ EV_WIN32_CLOSE_FD (evpipe [0]);
+ EV_WIN32_CLOSE_FD (evpipe [1]);
}
}
@@ -1730,8 +1736,8 @@ loop_fork (EV_P)
if (evpipe [0] >= 0)
{
- close (evpipe [0]);
- close (evpipe [1]);
+ EV_WIN32_CLOSE_FD (evpipe [0]);
+ EV_WIN32_CLOSE_FD (evpipe [1]);
}
evpipe_init (EV_A);
diff --git a/ev.pod b/ev.pod
index 31aa6b6..00dde2e 100644
--- a/ev.pod
+++ b/ev.pod
@@ -3665,7 +3665,7 @@ C<_get_osfhandle> on the fd to convert it to an OS handle. Otherwise,
it is assumed that all these functions actually work on fds, even
on win32. Should not be defined on non-win32 platforms.
-=item EV_FD_TO_WIN32_HANDLE
+=item EV_FD_TO_WIN32_HANDLE(fd)
If C<EV_SELECT_IS_WINSOCKET> is enabled, then libev needs a way to map
file descriptors to socket handles. When not defining this symbol (the
@@ -3673,6 +3673,20 @@ default), then libev will call C<_get_osfhandle>, which is usually
correct. In some cases, programs use their own file descriptor management,
in which case they can provide this function to map fds to socket handles.
+=item EV_WIN32_HANDLE_TO_FD(handle)
+
+If C<EV_SELECT_IS_WINSOCKET> then libev maps handles to file descriptors
+using the standard C<_open_osfhandle> function. For programs implementing
+their own fd to handle mapping, overwriting this function makes it easier
+to do so. This can be done by defining this macro to an appropriate value.
+
+=item EV_WIN32_CLOSE_FD(fd)
+
+If programs implement their own fd to handle mapping on win32, then this
+macro can be used to override the C<close> function, useful to unregister
+file descriptors again. Note that the replacement function has to close
+the underlying OS handle.
+
=item EV_USE_POLL
If defined to be C<1>, libev will compile in support for the C<poll>(2)
diff --git a/ev_win32.c b/ev_win32.c
index a048c0b..ee60ae6 100644
--- a/ev_win32.c
+++ b/ev_win32.c
@@ -111,8 +111,8 @@ ev_pipe (int filedes [2])
closesocket (listener);
#if EV_SELECT_IS_WINSOCKET
- filedes [0] = _open_osfhandle (sock [0], 0);
- filedes [1] = _open_osfhandle (sock [1], 0);
+ filedes [0] = EV_WIN32_HANDLE_TO_FD (sock [0]);
+ filedes [1] = EV_WIN32_HANDLE_TO_FD (sock [1]);
#else
/* when select isn't winsocket, we also expect socket, connect, accept etc.
* to work on fds */