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    <title>MongoDB Jira</title>
    <link>https://jira.mongodb.org</link>
    <description>This file is an XML representation of an issue</description>
    <language>en-us</language>    <build-info>
        <version>9.7.1</version>
        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
    </build-info>


<item>
            <title>[SERVER-44746] Fix LatchAnalyzerTest</title>
                <link>https://jira.mongodb.org/browse/SERVER-44746</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;It seems that Windows doesn&apos;t allow us to dtor a locked mutex (that behavior is in fact UB). This implies that failures during lock could be hidden by consequential failures during unlock. We should:&lt;/p&gt;
&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;invariant that Mutex is unlocked on dtor via a boolean flag&lt;/li&gt;
	&lt;li&gt;allow turning on and off the latch analyzer&lt;/li&gt;
	&lt;li&gt;alter the test to have a stack of lock and unlock events&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;As an example for LatchAnalyzerTest::AddValidWasAbsent, we would:&lt;/p&gt;
&lt;p/&gt;
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				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;  margin-top: 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;l2.acquire();&lt;/span&gt;&lt;/pre&gt;
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		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;l1.acquire();&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;{&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;    LatchAnalyzerDisabledBlock block;&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;    l1.release();&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;    l2.release();&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   margin-bottom: 10px;  width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;}&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
			&lt;/tbody&gt;
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&lt;/div&gt;
&lt;p/&gt;</description>
                <environment></environment>
        <key id="1015772">SERVER-44746</key>
            <summary>Fix LatchAnalyzerTest</summary>
                <type id="4" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14710&amp;avatarType=issuetype">Improvement</type>
                                            <priority id="3" iconUrl="https://jira.mongodb.org/images/icons/priorities/major.svg">Major - P3</priority>
                        <status id="6" iconUrl="https://jira.mongodb.org/images/icons/statuses/closed.png" description="The issue is considered finished, the resolution is correct. Issues which are closed can be reopened.">Closed</status>
                    <statusCategory id="3" key="done" colorName="success"/>
                                    <resolution id="13201">Fixed</resolution>
                                        <assignee username="rahul.sundararaman@mongodb.com">Rahul Sundararaman</assignee>
                                    <reporter username="ben.caimano@mongodb.com">Benjamin Caimano</reporter>
                        <labels>
                    </labels>
                <created>Wed, 20 Nov 2019 16:14:30 +0000</created>
                <updated>Sun, 29 Oct 2023 22:14:45 +0000</updated>
                            <resolved>Mon, 2 Dec 2019 22:15:55 +0000</resolved>
                                                    <fixVersion>4.3.3</fixVersion>
                                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="2932757" author="xgen-internal-githook" created="Tue, 3 Mar 2020 18:13:17 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Ben Caimano&apos;, &apos;email&apos;: &apos;ben.caimano@10gen.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-43945&quot; title=&quot;Expose out of order latch acquisitions in serverStatus&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-43945&quot;&gt;&lt;del&gt;SERVER-43945&lt;/del&gt;&lt;/a&gt; Expose out of order latch acquisitions in serverStatus&lt;/p&gt;

&lt;p&gt;This commit also backports:&lt;/p&gt;

&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-42897&quot; title=&quot;Validate base-level latches&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-42897&quot;&gt;&lt;del&gt;SERVER-42897&lt;/del&gt;&lt;/a&gt; Validate base-level latches&lt;br/&gt;
&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-44746&quot; title=&quot;Fix LatchAnalyzerTest&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-44746&quot;&gt;&lt;del&gt;SERVER-44746&lt;/del&gt;&lt;/a&gt; Fix LatchAnalyzerTest&lt;br/&gt;
&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-44155&quot; title=&quot;Validate a subset of latches of all levels&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-44155&quot;&gt;&lt;del&gt;SERVER-44155&lt;/del&gt;&lt;/a&gt; Validate a subset of latches of all levels&lt;br/&gt;
&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-45691&quot; title=&quot;Change Mutex::LockListeners to use a std::vector again&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-45691&quot;&gt;&lt;del&gt;SERVER-45691&lt;/del&gt;&lt;/a&gt; Change Mutex::LockListeners to use a std::vector again&lt;br/&gt;
&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-45793&quot; title=&quot;Improve mongo::Mutex contract&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-45793&quot;&gt;&lt;del&gt;SERVER-45793&lt;/del&gt;&lt;/a&gt; Improve mongo::Mutex contract&lt;br/&gt;
&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-45424&quot; title=&quot;Track local latch::Identities when getTestCommandsEnabled()&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-45424&quot;&gt;&lt;del&gt;SERVER-45424&lt;/del&gt;&lt;/a&gt; Track local latch::Identities when getTestCommandsEnabled()&lt;br/&gt;
&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-46041&quot; title=&quot;DiagnosticListeners are destructed before detached threads die&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-46041&quot;&gt;&lt;del&gt;SERVER-46041&lt;/del&gt;&lt;/a&gt; Add DiagnosticListener/WaitListener LSAN suppressions&lt;br/&gt;
&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-46461&quot; title=&quot;Make static in mutex getDiagnosticListenerState() immortal&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-46461&quot;&gt;&lt;del&gt;SERVER-46461&lt;/del&gt;&lt;/a&gt; Make static in getDiagnosticListenerState() immortal to fix destruction order issues during shutdown&lt;br/&gt;
&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-46197&quot; title=&quot;Make build flag to disable diagnostic latches&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-46197&quot;&gt;&lt;del&gt;SERVER-46197&lt;/del&gt;&lt;/a&gt; Make build flag to disable diagnostic latches&lt;br/&gt;
&lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-45276&quot; title=&quot;Release lock before destroying DBClientBases&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-45276&quot;&gt;&lt;del&gt;SERVER-45276&lt;/del&gt;&lt;/a&gt; Release lock before destroying DBClientBases&lt;br/&gt;
Branch: v4.2&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/24b6ee2dd48e3f1cfde1c4d7e2b01bd73921fbad&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/24b6ee2dd48e3f1cfde1c4d7e2b01bd73921fbad&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="2575548" author="xgen-internal-githook" created="Mon, 2 Dec 2019 21:16:53 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;email&apos;: &apos;rahul.sundararaman@mongodb.com&apos;, &apos;name&apos;: &apos;Rahul Sundararaman&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-44746&quot; title=&quot;Fix LatchAnalyzerTest&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-44746&quot;&gt;&lt;del&gt;SERVER-44746&lt;/del&gt;&lt;/a&gt; Fix LatchAnalyzerTest&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/cb125fa6284810a767a6e2ec50f940eb1eca7fad&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/cb125fa6284810a767a6e2ec50f940eb1eca7fad&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="2553938" author="xgen-internal-githook" created="Wed, 20 Nov 2019 16:34:11 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;name&apos;: &apos;Ben Caimano&apos;, &apos;username&apos;: &apos;bcaimano&apos;, &apos;email&apos;: &apos;ben.caimano@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-44746&quot; title=&quot;Fix LatchAnalyzerTest&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-44746&quot;&gt;&lt;del&gt;SERVER-44746&lt;/del&gt;&lt;/a&gt; Temporarily disable latch_analyzer_test.cpp&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/ddf887d75b1e85762258f0e4953d2bc13562c889&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/ddf887d75b1e85762258f0e4953d2bc13562c889&lt;/a&gt;&lt;/p&gt;</comment>
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