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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>
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<item>
            <title>[SERVER-45593] ClockSource::waitForConditionUntil calls wait_until with a mocked deadline</title>
                <link>https://jira.mongodb.org/browse/SERVER-45593</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;While undertaking some experiments with VS2019 (it cuts our build times in half), we found that several unit tests and the dbtests had very rapid memory leaks.&lt;/p&gt;

&lt;p&gt;Investigation has revealed ClockSource::waitForConditionUntil is passing a mocked deadline to a &lt;tt&gt;wait_until&lt;/tt&gt; call on a system &lt;tt&gt;condition_variable&lt;/tt&gt; that is using the system clock. Since the mocked values are very small, the wait is skipped. The erroneous line is here: &lt;a href=&quot;https://github.com/mongodb/mongo/blob/b157e332ffe0963c8c503bb9ecb380fd158e0871/src/mongo/util/clock_source.cpp#L87&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/blob/b157e332ffe0963c8c503bb9ecb380fd158e0871/src/mongo/util/clock_source.cpp#L87&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;The result is that we spin hard in &lt;a href=&quot;https://github.com/mongodb/mongo/blob/b157e332ffe0963c8c503bb9ecb380fd158e0871/src/mongo/util/clock_source.h#L117-L120&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/blob/b157e332ffe0963c8c503bb9ecb380fd158e0871/src/mongo/util/clock_source.h#L117-L120&lt;/a&gt;, and each iteration allocates a new &lt;tt&gt;AlarmInfo&lt;/tt&gt; .&lt;br/&gt;
One truly curious thing is why this only appears to be an issue on the VS2019 images, and doesn&apos;t seem to cause problems on the VS2017 builders.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1098025">SERVER-45593</key>
            <summary>ClockSource::waitForConditionUntil calls wait_until with a mocked deadline</summary>
                <type id="1" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14703&amp;avatarType=issuetype">Bug</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="ben.caimano@mongodb.com">Benjamin Caimano</assignee>
                                    <reporter username="andrew.morrow@mongodb.com">Andrew Morrow</reporter>
                        <labels>
                    </labels>
                <created>Wed, 15 Jan 2020 21:53:40 +0000</created>
                <updated>Sun, 29 Oct 2023 22:13:13 +0000</updated>
                            <resolved>Tue, 21 Jan 2020 20:50:35 +0000</resolved>
                                                    <fixVersion>4.3.3</fixVersion>
                                    <component>Internal Code</component>
                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                                                                <comments>
                            <comment id="2748265" author="xgen-internal-githook" created="Tue, 21 Jan 2020 20:37:50 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{&apos;username&apos;: &apos;bcaimano&apos;, &apos;name&apos;: &apos;Ben Caimano&apos;, &apos;email&apos;: &apos;ben.caimano@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-45593&quot; title=&quot;ClockSource::waitForConditionUntil calls wait_until with a mocked deadline&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-45593&quot;&gt;&lt;del&gt;SERVER-45593&lt;/del&gt;&lt;/a&gt; Use SystemClockSource for mock path waitForConditionUntil()&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/685afc7262c35f71cc04ceb0819a3a90f06c95bb&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/685afc7262c35f71cc04ceb0819a3a90f06c95bb&lt;/a&gt;&lt;/p&gt;</comment>
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            <issuekey id="1060085">SERVER-45238</issuekey>
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	&lt;li&gt;Get a windows-64-vs2019-nonprod spawnhost&lt;/li&gt;
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