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c5d5e2916b
Use the "interesting" value from g_file_monitor_source_handle_event() to decide if we're currently being flooded by a stream of boring events. The main case here is when one or more files is being written to and the change events are all being rate-limited in the GFileMonitor frontends. In that case, we become "bored" with the event stream and add a backoff timeout. In the case that it is exactly one large file being written (which is the common case) then leaving the event in the queue also lets the kernel perform merging on it, so when we wake up, we will only see the one event. Even in the case that the kernel is unable to perform merging, the context switch overhead will be vastly reduced. In testing, this cuts down on the number of wake ups during a large file copy, by a couple orders of magnitude (ie: less than 1% of the number of wake ups).
33 lines
1.2 KiB
C
33 lines
1.2 KiB
C
/*
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Copyright (C) 2005 John McCutchan
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The Gnome Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The Gnome Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the Gnome Library; see the file COPYING.LIB. If not,
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see <http://www.gnu.org/licenses/>.
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Authors:.
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John McCutchan <john@johnmccutchan.com>
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*/
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#ifndef __INOTIFY_PATH_H
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#define __INOTIFY_PATH_H
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#include "inotify-kernel.h"
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#include "inotify-sub.h"
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gboolean _ip_startup (gboolean (*event_cb)(ik_event_t *event, inotify_sub *sub, gboolean file_event));
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gboolean _ip_start_watching (inotify_sub *sub);
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gboolean _ip_stop_watching (inotify_sub *sub);
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const char * _ip_get_path_for_wd (gint32 wd);
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#endif
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