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<div class="title">impala::AtomicInt&lt; T &gt; Class Template Reference</div> </div>
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<p><code>#include &lt;<a class="el" href="atomic_8h_source.html">atomic.h</a>&gt;</code></p>
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Public Member Functions</h2></td></tr>
<tr class="memitem:aca0799250b4e2b32c31d05dedf3b0540"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classimpala_1_1AtomicInt.html#aca0799250b4e2b32c31d05dedf3b0540">AtomicInt</a> (T initial=0)</td></tr>
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<tr class="memitem:ae67a9d58827206ed1f72510bcb5e4ccf"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classimpala_1_1AtomicInt.html#ae67a9d58827206ed1f72510bcb5e4ccf">operator T</a> () const </td></tr>
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<tr class="memitem:a0e37db4420ec217f27eb83a792de3326"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classimpala_1_1AtomicInt.html">AtomicInt</a> &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classimpala_1_1AtomicInt.html#a0e37db4420ec217f27eb83a792de3326">operator=</a> (T val)</td></tr>
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<tr class="memitem:acfc31a87d76aa84860b0077f84732aed"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classimpala_1_1AtomicInt.html">AtomicInt</a> &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classimpala_1_1AtomicInt.html#acfc31a87d76aa84860b0077f84732aed">operator=</a> (const <a class="el" href="classimpala_1_1AtomicInt.html">AtomicInt</a>&lt; T &gt; &amp;val)</td></tr>
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<tr class="memitem:a3d63f2aa56a81430b51ff915875fb7de"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classimpala_1_1AtomicInt.html">AtomicInt</a> &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classimpala_1_1AtomicInt.html#a3d63f2aa56a81430b51ff915875fb7de">operator+=</a> (T delta)</td></tr>
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<tr class="memitem:a610adb90ac422ac5749945b6352f96bb"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classimpala_1_1AtomicInt.html">AtomicInt</a> &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classimpala_1_1AtomicInt.html#a610adb90ac422ac5749945b6352f96bb">operator-=</a> (T delta)</td></tr>
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<tr class="memitem:aa6f5c4218f2ba03fd1bfe04b988168f8"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classimpala_1_1AtomicInt.html">AtomicInt</a> &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classimpala_1_1AtomicInt.html#aa6f5c4218f2ba03fd1bfe04b988168f8">operator|=</a> (T v)</td></tr>
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<tr class="memitem:ab147df93ae6bfe38dca8415fe1ee6f83"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classimpala_1_1AtomicInt.html">AtomicInt</a> &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classimpala_1_1AtomicInt.html#ab147df93ae6bfe38dca8415fe1ee6f83">operator&amp;=</a> (T v)</td></tr>
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<tr class="memitem:a305d229883cbebadd71fc8a105fadd26"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classimpala_1_1AtomicInt.html">AtomicInt</a> &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classimpala_1_1AtomicInt.html#a305d229883cbebadd71fc8a105fadd26">operator++</a> ()</td></tr>
<tr class="memdesc:a305d229883cbebadd71fc8a105fadd26"><td class="mdescLeft">&#160;</td><td class="mdescRight">These define the preincrement (i.e. &ndash;value) operators. <a href="#a305d229883cbebadd71fc8a105fadd26">More...</a><br/></td></tr>
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<tr class="memitem:afd061db13067908951dac32ec8581da5"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classimpala_1_1AtomicInt.html">AtomicInt</a> &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classimpala_1_1AtomicInt.html#afd061db13067908951dac32ec8581da5">operator--</a> ()</td></tr>
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<tr class="memitem:a5d9622f7d2382b2bb677f65fd3e32dc8"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classimpala_1_1AtomicInt.html">AtomicInt</a>&lt; T &gt;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classimpala_1_1AtomicInt.html#a5d9622f7d2382b2bb677f65fd3e32dc8">operator++</a> (int)</td></tr>
<tr class="memdesc:a5d9622f7d2382b2bb677f65fd3e32dc8"><td class="mdescLeft">&#160;</td><td class="mdescRight">This is post increment, which needs to return a new object. <a href="#a5d9622f7d2382b2bb677f65fd3e32dc8">More...</a><br/></td></tr>
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<tr class="memitem:af9e0d1968c5bc6bdda19ff25e1589268"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classimpala_1_1AtomicInt.html">AtomicInt</a>&lt; T &gt;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classimpala_1_1AtomicInt.html#af9e0d1968c5bc6bdda19ff25e1589268">operator--</a> (int)</td></tr>
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<tr class="memitem:af8ed92dc5c77239f7089138dfaa20ba9"><td class="memItemLeft" align="right" valign="top">T&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classimpala_1_1AtomicInt.html#af8ed92dc5c77239f7089138dfaa20ba9">Read</a> ()</td></tr>
<tr class="memdesc:af8ed92dc5c77239f7089138dfaa20ba9"><td class="mdescLeft">&#160;</td><td class="mdescRight">Safe read of the value. <a href="#af8ed92dc5c77239f7089138dfaa20ba9">More...</a><br/></td></tr>
<tr class="separator:af8ed92dc5c77239f7089138dfaa20ba9"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a8f42ccf5dc9cfc042509720cea963b50"><td class="memItemLeft" align="right" valign="top">T&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classimpala_1_1AtomicInt.html#a8f42ccf5dc9cfc042509720cea963b50">UpdateAndFetch</a> (T delta)</td></tr>
<tr class="memdesc:a8f42ccf5dc9cfc042509720cea963b50"><td class="mdescLeft">&#160;</td><td class="mdescRight">Increments by delta (i.e. += delta) and returns the new val. <a href="#a8f42ccf5dc9cfc042509720cea963b50">More...</a><br/></td></tr>
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<tr class="memitem:a39a2a87ffdd71189776fddf49d5d5537"><td class="memItemLeft" align="right" valign="top">T&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classimpala_1_1AtomicInt.html#a39a2a87ffdd71189776fddf49d5d5537">FetchAndUpdate</a> (T delta)</td></tr>
<tr class="memdesc:a39a2a87ffdd71189776fddf49d5d5537"><td class="mdescLeft">&#160;</td><td class="mdescRight">Increment by delta and returns the old val. <a href="#a39a2a87ffdd71189776fddf49d5d5537">More...</a><br/></td></tr>
<tr class="separator:a39a2a87ffdd71189776fddf49d5d5537"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a246319397aa2f5c734b0e1f8e557030a"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classimpala_1_1AtomicInt.html#a246319397aa2f5c734b0e1f8e557030a">UpdateMax</a> (T value)</td></tr>
<tr class="memdesc:a246319397aa2f5c734b0e1f8e557030a"><td class="mdescLeft">&#160;</td><td class="mdescRight">Updates the int to 'value' if value is larger. <a href="#a246319397aa2f5c734b0e1f8e557030a">More...</a><br/></td></tr>
<tr class="separator:a246319397aa2f5c734b0e1f8e557030a"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:aaf8bc096851ef3149ebbe2d36e0bef97"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classimpala_1_1AtomicInt.html#aaf8bc096851ef3149ebbe2d36e0bef97">UpdateMin</a> (T value)</td></tr>
<tr class="separator:aaf8bc096851ef3149ebbe2d36e0bef97"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a3e0cab2d8adaced2bdeef7fc93d9e581"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classbool.html">bool</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classimpala_1_1AtomicInt.html#a3e0cab2d8adaced2bdeef7fc93d9e581">CompareAndSwap</a> (T old_val, T new_val)</td></tr>
<tr class="memdesc:a3e0cab2d8adaced2bdeef7fc93d9e581"><td class="mdescLeft">&#160;</td><td class="mdescRight">Returns true if the atomic compare-and-swap was successful. <a href="#a3e0cab2d8adaced2bdeef7fc93d9e581">More...</a><br/></td></tr>
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<tr class="memitem:a77a2afa1fd0748bfe878948ab0221052"><td class="memItemLeft" align="right" valign="top">T&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classimpala_1_1AtomicInt.html#a77a2afa1fd0748bfe878948ab0221052">CompareAndSwapVal</a> (T old_val, T new_val)</td></tr>
<tr class="separator:a77a2afa1fd0748bfe878948ab0221052"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a85e0c2fb3a99b2f95f9c9f2f16d7462e"><td class="memItemLeft" align="right" valign="top">T&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classimpala_1_1AtomicInt.html#a85e0c2fb3a99b2f95f9c9f2f16d7462e">Swap</a> (const T &amp;new_val)</td></tr>
<tr class="memdesc:a85e0c2fb3a99b2f95f9c9f2f16d7462e"><td class="mdescLeft">&#160;</td><td class="mdescRight">Atomically updates value_ with new_val. Returns the old value_. <a href="#a85e0c2fb3a99b2f95f9c9f2f16d7462e">More...</a><br/></td></tr>
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Private Attributes</h2></td></tr>
<tr class="memitem:a1690b62950ec02ede1f8a899f91254a2"><td class="memItemLeft" align="right" valign="top">T&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classimpala_1_1AtomicInt.html#a1690b62950ec02ede1f8a899f91254a2">value_</a></td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><h3>template&lt;typename T&gt;<br/>
class impala::AtomicInt&lt; T &gt;</h3>
<p>Wrapper for atomic integers. This should be switched to c++ 11 when we can switch. This class overloads operators to behave like a regular integer type but all operators and functions are thread safe. </p>
<p>Definition at line <a class="el" href="atomic_8h_source.html#l00046">46</a> of file <a class="el" href="atomic_8h_source.html">atomic.h</a>.</p>
</div><h2 class="groupheader">Constructor &amp; Destructor Documentation</h2>
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<td class="memname"><a class="el" href="classimpala_1_1AtomicInt.html">impala::AtomicInt</a>&lt; T &gt;::<a class="el" href="classimpala_1_1AtomicInt.html">AtomicInt</a> </td>
<td>(</td>
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<td class="paramname"><em>initial</em> = <code>0</code></td><td>)</td>
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<p>Definition at line <a class="el" href="atomic_8h_source.html#l00048">48</a> of file <a class="el" href="atomic_8h_source.html">atomic.h</a>.</p>
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<h2 class="groupheader">Member Function Documentation</h2>
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<td class="memname"><a class="el" href="classbool.html">bool</a> <a class="el" href="classimpala_1_1AtomicInt.html">impala::AtomicInt</a>&lt; T &gt;::CompareAndSwap </td>
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<td class="paramname"><em>old_val</em>, </td>
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<p>Returns true if the atomic compare-and-swap was successful. </p>
<p>Definition at line <a class="el" href="atomic_8h_source.html#l00131">131</a> of file <a class="el" href="atomic_8h_source.html">atomic.h</a>.</p>
<p>Referenced by <a class="el" href="atomic-test_8cc_source.html#l00157">impala::CASDecrementThread()</a>, <a class="el" href="atomic-test_8cc_source.html#l00143">impala::CASIncrementThread()</a>, <a class="el" href="plan-fragment-executor_8cc_source.html#l00492">impala::PlanFragmentExecutor::FragmentComplete()</a>, <a class="el" href="atomic-test_8cc_source.html#l00028">impala::TEST()</a>, <a class="el" href="runtime-profile_8h_source.html#l00136">impala::RuntimeProfile::HighWaterMarkCounter::TryAdd()</a>, <a class="el" href="atomic_8h_source.html#l00115">impala::AtomicInt&lt; int &gt;::UpdateMax()</a>, <a class="el" href="atomic_8h_source.html#l00122">impala::AtomicInt&lt; int &gt;::UpdateMin()</a>, and <a class="el" href="plan-fragment-executor_8cc_source.html#l00514">impala::PlanFragmentExecutor::UpdateStatus()</a>.</p>
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<p>Returns the content of value_ before the operation. If returnValue == old_val, then the atomic compare-and-swap was successful. </p>
<p>Definition at line <a class="el" href="atomic_8h_source.html#l00137">137</a> of file <a class="el" href="atomic_8h_source.html">atomic.h</a>.</p>
<p>Referenced by <a class="el" href="atomic-test_8cc_source.html#l00028">impala::TEST()</a>.</p>
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<p>Increment by delta and returns the old val. </p>
<p>Definition at line <a class="el" href="atomic_8h_source.html#l00110">110</a> of file <a class="el" href="atomic_8h_source.html">atomic.h</a>.</p>
<p>Referenced by <a class="el" href="atomic-test_8cc_source.html#l00090">impala::TEST()</a>.</p>
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<p>Definition at line <a class="el" href="atomic_8h_source.html#l00050">50</a> of file <a class="el" href="atomic_8h_source.html">atomic.h</a>.</p>
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<p>Definition at line <a class="el" href="atomic_8h_source.html#l00074">74</a> of file <a class="el" href="atomic_8h_source.html">atomic.h</a>.</p>
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<p>These define the preincrement (i.e. &ndash;value) operators. </p>
<p>Definition at line <a class="el" href="atomic_8h_source.html#l00080">80</a> of file <a class="el" href="atomic_8h_source.html">atomic.h</a>.</p>
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<p>This is post increment, which needs to return a new object. </p>
<p>Definition at line <a class="el" href="atomic_8h_source.html#l00090">90</a> of file <a class="el" href="atomic_8h_source.html">atomic.h</a>.</p>
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<p>Definition at line <a class="el" href="atomic_8h_source.html#l00061">61</a> of file <a class="el" href="atomic_8h_source.html">atomic.h</a>.</p>
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<p>Definition at line <a class="el" href="atomic_8h_source.html#l00084">84</a> of file <a class="el" href="atomic_8h_source.html">atomic.h</a>.</p>
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<p>Definition at line <a class="el" href="atomic_8h_source.html#l00094">94</a> of file <a class="el" href="atomic_8h_source.html">atomic.h</a>.</p>
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<p>Definition at line <a class="el" href="atomic_8h_source.html#l00065">65</a> of file <a class="el" href="atomic_8h_source.html">atomic.h</a>.</p>
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<p>Definition at line <a class="el" href="atomic_8h_source.html#l00052">52</a> of file <a class="el" href="atomic_8h_source.html">atomic.h</a>.</p>
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<p>Definition at line <a class="el" href="atomic_8h_source.html#l00056">56</a> of file <a class="el" href="atomic_8h_source.html">atomic.h</a>.</p>
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<p>Definition at line <a class="el" href="atomic_8h_source.html#l00070">70</a> of file <a class="el" href="atomic_8h_source.html">atomic.h</a>.</p>
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<p>Safe read of the value. </p>
<p>Definition at line <a class="el" href="atomic_8h_source.html#l00100">100</a> of file <a class="el" href="atomic_8h_source.html">atomic.h</a>.</p>
<p>Referenced by <a class="el" href="atomic-test_8cc_source.html#l00157">impala::CASDecrementThread()</a>, <a class="el" href="atomic-test_8cc_source.html#l00143">impala::CASIncrementThread()</a>, <a class="el" href="plan-fragment-executor_8cc_source.html#l00374">impala::PlanFragmentExecutor::ReportProfile()</a>, and <a class="el" href="periodic-counter-updater_8cc_source.html#l00128">impala::PeriodicCounterUpdater::UpdateLoop()</a>.</p>
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<p>Atomically updates value_ with new_val. Returns the old value_. </p>
<p>Definition at line <a class="el" href="atomic_8h_source.html#l00142">142</a> of file <a class="el" href="atomic_8h_source.html">atomic.h</a>.</p>
<p>Referenced by <a class="el" href="atomic-test_8cc_source.html#l00028">impala::TEST()</a>, and <a class="el" href="periodic-counter-updater_8cc_source.html#l00039">impala::PeriodicCounterUpdater::~PeriodicCounterUpdater()</a>.</p>
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<p>Increments by delta (i.e. += delta) and returns the new val. </p>
<p>Definition at line <a class="el" href="atomic_8h_source.html#l00105">105</a> of file <a class="el" href="atomic_8h_source.html">atomic.h</a>.</p>
<p>Referenced by <a class="el" href="runtime-profile_8h_source.html#l00129">impala::RuntimeProfile::HighWaterMarkCounter::Add()</a>, <a class="el" href="hdfs-bulk-ops_8cc_source.html#l00162">impala::HdfsOperationSet::MarkOneOpDone()</a>, <a class="el" href="mem-tracker_8h_source.html#l00209">impala::MemTracker::Release()</a>, and <a class="el" href="atomic-test_8cc_source.html#l00090">impala::TEST()</a>.</p>
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<p>Updates the int to 'value' if value is larger. </p>
<p>Definition at line <a class="el" href="atomic_8h_source.html#l00115">115</a> of file <a class="el" href="atomic_8h_source.html">atomic.h</a>.</p>
<p>Referenced by <a class="el" href="runtime-profile_8h_source.html#l00129">impala::RuntimeProfile::HighWaterMarkCounter::Add()</a>, <a class="el" href="runtime-profile_8h_source.html#l00148">impala::RuntimeProfile::HighWaterMarkCounter::Set()</a>, <a class="el" href="atomic-test_8cc_source.html#l00028">impala::TEST()</a>, and <a class="el" href="runtime-profile_8h_source.html#l00136">impala::RuntimeProfile::HighWaterMarkCounter::TryAdd()</a>.</p>
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<p>Definition at line <a class="el" href="atomic_8h_source.html#l00122">122</a> of file <a class="el" href="atomic_8h_source.html">atomic.h</a>.</p>
<p>Referenced by <a class="el" href="atomic-test_8cc_source.html#l00028">impala::TEST()</a>.</p>
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template&lt;typename T&gt; </div>
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<td class="memname">T <a class="el" href="classimpala_1_1AtomicInt.html">impala::AtomicInt</a>&lt; T &gt;::value_</td>
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<p>Definition at line <a class="el" href="atomic_8h_source.html#l00147">147</a> of file <a class="el" href="atomic_8h_source.html">atomic.h</a>.</p>
<p>Referenced by <a class="el" href="atomic_8h_source.html#l00131">impala::AtomicInt&lt; int &gt;::CompareAndSwap()</a>, <a class="el" href="atomic_8h_source.html#l00137">impala::AtomicInt&lt; int &gt;::CompareAndSwapVal()</a>, <a class="el" href="atomic_8h_source.html#l00110">impala::AtomicInt&lt; int &gt;::FetchAndUpdate()</a>, <a class="el" href="atomic_8h_source.html#l00050">impala::AtomicInt&lt; uint32_t &gt;::operator uint32_t()</a>, <a class="el" href="atomic_8h_source.html#l00074">impala::AtomicInt&lt; int &gt;::operator&amp;=()</a>, <a class="el" href="atomic_8h_source.html#l00080">impala::AtomicInt&lt; int &gt;::operator++()</a>, <a class="el" href="atomic_8h_source.html#l00061">impala::AtomicInt&lt; int &gt;::operator+=()</a>, <a class="el" href="atomic_8h_source.html#l00084">impala::AtomicInt&lt; int &gt;::operator--()</a>, <a class="el" href="atomic_8h_source.html#l00065">impala::AtomicInt&lt; int &gt;::operator-=()</a>, <a class="el" href="atomic_8h_source.html#l00052">impala::AtomicInt&lt; int &gt;::operator=()</a>, <a class="el" href="atomic_8h_source.html#l00070">impala::AtomicInt&lt; int &gt;::operator|=()</a>, <a class="el" href="atomic_8h_source.html#l00100">impala::AtomicInt&lt; int &gt;::Read()</a>, <a class="el" href="atomic_8h_source.html#l00142">impala::AtomicInt&lt; int &gt;::Swap()</a>, <a class="el" href="atomic_8h_source.html#l00105">impala::AtomicInt&lt; int &gt;::UpdateAndFetch()</a>, <a class="el" href="atomic_8h_source.html#l00115">impala::AtomicInt&lt; int &gt;::UpdateMax()</a>, and <a class="el" href="atomic_8h_source.html#l00122">impala::AtomicInt&lt; int &gt;::UpdateMin()</a>.</p>
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<hr/>The documentation for this class was generated from the following file:<ul>
<li>be/src/common/<a class="el" href="atomic_8h_source.html">atomic.h</a></li>
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