When the GAM_POLLER option is disabled:

  - force polling for remote file systems
  - do not initialize the vendor's poller [1]

Obtained from:	marcus [1]

1 files changed, 72 insertions, 11 deletions

diff --git a/devel/gamin/files/patch-server_gam_kqueue.c b/devel/gamin/files/patch-server_gam_kqueue.c
index dc0cece61eec..fe4d5a51cbf0 100644
--- a/devel/gamin/files/patch-server_gam_kqueue.c
+++ b/devel/gamin/files/patch-server_gam_kqueue.c
@@ -1,20 +1,25 @@
 --- server/gam_kqueue.c.orig	Wed Aug 10 23:50:32 2005
-+++ server/gam_kqueue.c	Wed Feb  8 12:43:52 2006
-@@ -10,9 +10,8 @@
++++ server/gam_kqueue.c	Tue Feb 14 10:00:17 2006
+@@ -10,9 +10,10 @@
   *       FAM should do: we do not call g_dir_open() if the file is a
   *       symbolic link).
   *
 - *     * kqueue cannot monitor files residing on anything but a UFS
 - *       file system. If kqueue cannot monitor a file, this backend
 - *       will poll it periodically.
-+ *     * kqueue can only monitor files residing on a UFS file system.
-+ *       For other file systems, the basic poll backend will be used.
++ *     * While kqueue is no longer tied to the UFS file system, it is
++ *       better to not use it for remote file systems (because for
++ *       such file systems, only local changes are detected by
++ *       the kernel).
   *
   *     * Monitoring a file with kqueue prevents the file system it
   *       resides on from being unmounted, because kqueue can only
-@@ -31,7 +30,8 @@
-  *           - kqueue needs to be moved out the UFS code.
+@@ -28,10 +29,9 @@
+  *           - kqueue needs to be augmented with a filename-based
+  *             monitoring facility;
   *
+- *           - kqueue needs to be moved out the UFS code.
+- *
   * Copyright (C) 2005 Joe Marcus Clarke <marcus@FreeBSD.org>
 - * Copyright (C) 2005 Jean-Yves Lefort <jylefort@FreeBSD.org>
 + * Copyright (C) 2005, 2006 Jean-Yves Lefort <jylefort@FreeBSD.org>
@@ -22,7 +27,17 @@
   *
   * This library is free software; you can redistribute it and/or
   * modify it under the terms of the GNU Lesser General Public
-@@ -63,7 +63,7 @@
+@@ -53,6 +53,9 @@
+ #include <fcntl.h>
+ #include <unistd.h>
+ #include <sys/param.h>
++#ifndef USE_GAMIN_POLLER
++#include <sys/mount.h>
++#endif
+ #include <sys/types.h>
+ #include <sys/sysctl.h>
+ #include <sys/stat.h>
+@@ -63,7 +66,7 @@
  #include "gam_kqueue.h"
  #include "gam_event.h"
  #include "gam_server.h"
@@ -31,7 +46,17 @@
  
  /*** tunable constants, modify to tweak the backend aggressivity *************/
  
-@@ -516,7 +516,7 @@
+@@ -509,6 +512,9 @@
+ gam_kqueue_monitor_enable_kqueue (Monitor *mon)
+ {
+   struct kevent ev[1];
++#ifndef USE_GAMIN_POLLER
++  struct statfs sb;
++#endif
+ 
+   if (open_files == max_open_files)
+     {
+@@ -516,26 +522,36 @@
        return FALSE;
      }
    
@@ -40,7 +65,41 @@
    if (mon->fd < 0)
      {
        GAM_DEBUG(DEBUG_INFO, "cannot open %s (%s), falling back to poll\n", mon->pathname, g_strerror(errno));
-@@ -840,6 +840,8 @@
+       return FALSE;
+     }
+ 
++#ifndef USE_GAMIN_POLLER
++  if (fstatfs(mon->fd, &sb) == 0 && (sb.f_flags & MNT_LOCAL) == 0)
++    {
++      GAM_DEBUG(DEBUG_INFO, "%s resides on a remote file system, falling back to poll\n", mon->pathname);
++      goto poll;
++    }
++#endif
++
+   EV_SET(ev, mon->fd, EVFILT_VNODE, EV_ADD | EV_ENABLE | EV_CLEAR, VN_NOTE_ALL, 0, mon);
+   if (kevent(kq, ev, G_N_ELEMENTS(ev), NULL, 0, NULL) < 0)
+     {
+       GAM_DEBUG(DEBUG_INFO, "cannot enable kqueue notification for %s (%s), falling back to poll\n", mon->pathname, g_strerror(errno));
+-
+-      close(mon->fd);
+-      mon->fd = -1;
+-
+-      return FALSE;
++      goto poll;
+     }
+ 
+   open_files++;
+   return TRUE;
++
++ poll:
++  close(mon->fd);
++  mon->fd = -1;
++
++  return FALSE;
+ }
+ 
+ static void
+@@ -840,6 +856,8 @@
      case GAMIN_EVENT_MOVED:
        gam_kqueue_sub_monitor_set_missing(smon);
        break;
@@ -49,7 +108,7 @@
      }
  
    gam_server_emit_event(mon->pathname, isdir, event, smon->subs, 1);
-@@ -981,6 +983,8 @@
+@@ -981,6 +999,8 @@
  	
        gam_kqueue_hash_table_remove(fmon->smon->fmons, fmon);
        break;
@@ -58,7 +117,7 @@
      }
  }
  
-@@ -1167,11 +1171,13 @@
+@@ -1167,11 +1187,15 @@
    channel = g_io_channel_unix_new(kq);
    g_io_add_watch(channel, G_IO_IN, gam_kqueue_kevent_cb, NULL);
  
@@ -67,7 +126,9 @@
 -  gam_backend_add_subscription = gam_kqueue_add_subscription;
 -  gam_backend_remove_subscription = gam_kqueue_remove_subscription;
 -  gam_backend_remove_all_for = gam_kqueue_remove_all_for;
++#ifdef USE_GAMIN_POLLER
 +  gam_poll_basic_init (); 
++#endif
 +  gam_server_install_kernel_hooks (GAMIN_K_KQUEUE,
 +                                   gam_kqueue_add_subscription,
 +                                   gam_kqueue_remove_subscription,