1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170
|
# Copyright (c) 2015 SUSE LINUX GmbH, Nuernberg, Germany.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, see <http://www.gnu.org/licenses/>.
## synchronization API
package lockapi;
use strict;
use warnings;
use Scalar::Util 'looks_like_number';
use base 'Exporter';
our @EXPORT = qw(mutex_create mutex_lock mutex_unlock mutex_try_lock mutex_wait
barrier_create barrier_wait barrier_try_wait barrier_destroy);
require bmwqemu;
use mmapi qw(api_call get_job_info);
use testapi 'record_info';
sub _try_lock {
my ($type, $name, $param) = @_;
# try up to 7 times
my $res = '';
for (1 .. 7) {
$res = api_call('post', "$type/$name", $param)->code;
return 1 if ($res == 200);
last unless $res == 410;
bmwqemu::fctinfo("Retry $_ of 7...");
sleep 10;
}
bmwqemu::mydie "$type '$name': lock owner already finished" if $res == 410;
if ($res != 409) {
bmwqemu::fctwarn("Unknown return code $res for lock api");
}
return 0;
}
sub _lock_action {
my ($name, $where) = @_;
my $param = {action => 'lock'};
$param->{where} = $where if $where;
return _try_lock('mutex', $name, $param);
}
sub mutex_lock {
my ($name, $where) = @_;
bmwqemu::mydie('missing lock name') unless $name;
bmwqemu::diag("mutex lock '$name'");
while (1) {
my $res = _lock_action($name, $where);
return 1 if $res;
bmwqemu::diag("mutex lock '$name' unavailable, sleeping 5s");
sleep(5);
}
}
sub mutex_try_lock {
my ($name, $where) = @_;
bmwqemu::mydie('missing lock name') unless $name;
bmwqemu::diag("mutex try lock '$name'");
return _lock_action($name, $where);
}
sub mutex_unlock {
my ($name) = @_;
bmwqemu::mydie('missing lock name') unless $name;
bmwqemu::diag("mutex unlock '$name'");
my $res = api_call('post', "mutex/$name", {action => 'unlock'})->code;
return 1 if ($res == 200);
bmwqemu::fctwarn("Unknown return code $res for lock api") if ($res != 409);
return 0;
}
sub mutex_create {
my ($name) = @_;
bmwqemu::mydie('missing lock name') unless $name;
bmwqemu::diag("mutex create '$name'");
my $res = api_call('post', "mutex", {name => $name})->code;
return 1 if ($res == 200);
bmwqemu::fctwarn("Unknown return code $res for lock api") if ($res != 409);
return 0;
}
# Wrapper for mutex_lock & mutex_unlock
sub mutex_wait {
my ($name, $where, $info) = @_;
# Log info about event and it's location
my $job = $where ? get_job_info($where)->{settings}->{TEST} . " #$where" : 'parent job';
my $msg = "Wait for $name (on $job)";
$msg .= " - $info" if $info;
record_info 'Paused', $msg;
my $start = time;
mutex_lock $name, $where;
my $delay = time - $start;
mutex_unlock $name;
# Ammend info with time spent waiting
$autotest::current_test->remove_last_result;
record_info 'Paused ' . int($delay / 60) . 'm' . $delay % 60 . 's', $msg;
}
## Barriers
sub barrier_create {
my ($name, $tasks) = @_;
bmwqemu::mydie('missing barrier name') unless $name;
bmwqemu::mydie('missing number of barrier task') unless $tasks;
bmwqemu::diag("barrier create '$name' for $tasks tasks");
my $res = api_call('post', 'barrier', {name => $name, tasks => $tasks})->code;
return 1 if ($res == 200);
bmwqemu::fctwarn("Unknown return code $res for lock api") if ($res != 409);
return 0;
}
sub _wait_action {
my ($name, $where, $check_dead_job) = @_;
my $param;
$param->{where} = $where if $where;
$param->{check_dead_job} = $check_dead_job if defined $check_dead_job;
return _try_lock('barrier', $name, $param);
}
# Reason to include this is to be able to unit test _wait_action without blocking
sub barrier_try_wait {
my ($name, $where) = @_;
bmwqemu::mydie('missing barrier name') unless $name;
bmwqemu::diag("barrier try wait '$name'");
return _wait_action($name, $where);
}
sub barrier_wait {
my ($name, $where, $check_dead_job) = ref $_[0] eq 'HASH' ? (@{$_[0]}{qw(name where check_dead_job)}) : @_;
$check_dead_job = looks_like_number($check_dead_job) && $check_dead_job ? 1 : 0;
bmwqemu::mydie('missing barrier name') unless $name;
bmwqemu::diag("barrier wait '$name'");
while (1) {
my $res = _wait_action($name, $where, $check_dead_job);
return 1 if $res;
bmwqemu::diag("barrier '$name' not released, sleeping 5s");
sleep(5);
}
}
sub barrier_destroy {
my ($name, $where) = @_;
bmwqemu::mydie('missing barrier name') unless $name;
bmwqemu::diag("barrier destroy '$name'");
my $param;
$param->{where} = $where if $where;
my $res = api_call('delete', "barrier/$name", $param)->code;
return 1 if ($res == 200);
bmwqemu::fctwarn("Unknown return code $res for lock api");
}
1;
|