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https://gitlab.com/libvirt/libvirt.git
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3a6836fc6d
Update the events stap example because the event loop impl is replaced by
GLib based event loop impl after commit 55fe8110.
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Han Han <hhan@redhat.com>
122 lines
3.2 KiB
Plaintext
122 lines
3.2 KiB
Plaintext
#!/usr/bin/stap
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#
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# Copyright (C) 2011 Red Hat, Inc.
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#
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# This library is free software; you can redistribute it and/or
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# modify it under the terms of the GNU Lesser General Public
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# License as published by the Free Software Foundation; either
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# version 2.1 of the License, or (at your option) any later version.
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#
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# This 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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# Lesser General Public License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public
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# License along with this library. If not, see
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# <http://www.gnu.org/licenses/>.
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#
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#
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# This script will monitor all operation of the libvirt event loop
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# in both client and server. Example output is:
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#
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# 0.000 begin
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# 2.359 18185 + handle 1 4 1
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# 2.360 18185 + handle 2 6 1
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# 2.360 18185 * handle 2 0
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# 2.360 14370 > handle 3 1
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# 2.360 14370 + handle 33 16 1
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# 2.361 14370 ~ 7 -1
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# 2.361 14370 > handle 33 1
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# 2.361 14370 * handle 33 1
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# 2.361 14370 * handle 33 1
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# 2.361 14370 * handle 33 3
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# 2.361 14370 ~ 7 -1
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# 2.361 14370 > handle 1 1
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# 2.361 14370 ~ 7 -1
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# 2.361 14370 > handle 33 2
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# 2.361 14370 * handle 33 1
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# 2.361 14370 ~ 7 -1
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# 2.361 18185 * handle 2 1
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# 2.362 18185 * handle 2 0
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# 2.362 14370 > handle 33 1
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# 2.362 14370 * handle 33 1
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# 2.362 14370 * handle 33 1
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# 2.362 14370 ~ 7 -1
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# 2.367 14370 * handle 33 3
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# 2.367 14370 > handle 1 1
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# 2.367 14370 ~ 7 -1
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# 2.367 14370 > handle 33 2
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# 2.367 14370 * handle 33 1
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# 2.367 14370 ~ 7 -1
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# 2.370 18185 - timeout 1
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# 2.370 14370 ! handle 33
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# 2.371 14370 - handle 33
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# 2.371 14370 ~ 6 -1
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#
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# Legend:
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# + Add
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# - Remove
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# * Update
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# > dispatch
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# ! purge
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# ~ Iterate
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#
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#
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# Show all updates to registered timeouts/handles
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global showUpdates = 1
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# Show when handles/timeouts are dispatched
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global showDispatch = 1
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# Show iterations of the event loop
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global showIter = 1
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global start
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# Print a string, with a timestamp relative to the start of the script
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function print_ts(msg)
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{
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now = gettimeofday_ns() / (1000*1000)
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delta = (now - start)
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printf("%3d.%03d %s\n", (delta / 1000), (delta % 1000), msg);
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}
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probe begin {
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start = gettimeofday_ns() / (1000*1000)
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print_ts("begin");
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}
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probe libvirt.event_glib.add_handle {
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print_ts(sprintf("%d + handle %d %d %d", pid(), watch, fd, events));
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}
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probe libvirt.event_glib.remove_handle {
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print_ts(sprintf("%d - handle %d", pid(), watch));
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}
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probe libvirt.event_glib.update_handle {
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if (showUpdates)
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print_ts(sprintf("%d * handle %d %d", pid(), watch, events));
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}
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probe libvirt.event_glib.dispatch_handle {
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if (showDispatch)
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print_ts(sprintf("%d > handle %d %d", pid(), watch, events));
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}
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probe libvirt.event_glib.add_timeout {
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print_ts(sprintf("%d + timeout %d %d", pid(), timer, frequency));
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}
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probe libvirt.event_glib.remove_timeout {
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print_ts(sprintf("%d - timeout %d", pid(), timer));
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}
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probe libvirt.event_glib.update_timeout {
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if (showUpdates)
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print_ts(sprintf("%d * timeout %d %d", pid(), timer, frequency));
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}
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probe libvirt.event_glib.dispatch_timeout {
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if (showDispatch)
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print_ts(sprintf("%d > timeout %d", pid(), timer));
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}
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