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| <li>Summary: </li> |
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| <div class="subTitle"><span class="moduleLabelInType">Module</span> <a href="../../../../../../module-summary.html">openj9.dtfj</a></div> |
| <div class="subTitle"><span class="packageLabelInType">Package</span> <a href="package-summary.html">com.ibm.j9ddr.vm29.pointer.helper</a></div> |
| <h2 title="Class J9MemTagHelper" class="title">Class J9MemTagHelper</h2> |
| </div> |
| <div class="contentContainer"> |
| <ul class="inheritance"> |
| <li><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink" target="_blank">java.lang.Object</a></li> |
| <li> |
| <ul class="inheritance"> |
| <li>com.ibm.j9ddr.vm29.pointer.helper.J9MemTagHelper</li> |
| </ul> |
| </li> |
| </ul> |
| <div class="description"> |
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| <hr> |
| <pre>public class <span class="typeNameLabel">J9MemTagHelper</span> |
| extends <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink" target="_blank">Object</a></pre> |
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| <h3>Nested Class Summary</h3> |
| <table class="memberSummary"> |
| <caption><span>Nested Classes</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colSecond" scope="col">Class</th> |
| <th class="colLast" scope="col">Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static class </code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="J9MemTagHelper.J9MemTagCheckError.html" title="class in com.ibm.j9ddr.vm29.pointer.helper">J9MemTagHelper.J9MemTagCheckError</a></span></code></th> |
| <td class="colLast"> </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| </section> |
| <!-- =========== FIELD SUMMARY =========== --> |
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| </a> |
| <h3>Field Summary</h3> |
| <table class="memberSummary"> |
| <caption><span>Fields</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colSecond" scope="col">Field</th> |
| <th class="colLast" scope="col">Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static <a href="../../types/IDATA.html" title="class in com.ibm.j9ddr.vm29.types">IDATA</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#J9PORT_MEMTAG_FOOTER_PADDING_CORRUPTED">J9PORT_MEMTAG_FOOTER_PADDING_CORRUPTED</a></span></code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>static <a href="../../types/IDATA.html" title="class in com.ibm.j9ddr.vm29.types">IDATA</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#J9PORT_MEMTAG_FOOTER_TAG_CORRUPTED">J9PORT_MEMTAG_FOOTER_TAG_CORRUPTED</a></span></code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static <a href="../../types/IDATA.html" title="class in com.ibm.j9ddr.vm29.types">IDATA</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#J9PORT_MEMTAG_HEADER_TAG_CORRUPTED">J9PORT_MEMTAG_HEADER_TAG_CORRUPTED</a></span></code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>static <a href="../../types/IDATA.html" title="class in com.ibm.j9ddr.vm29.types">IDATA</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#J9PORT_MEMTAG_NOT_A_TAG">J9PORT_MEMTAG_NOT_A_TAG</a></span></code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>static <a href="../../types/IDATA.html" title="class in com.ibm.j9ddr.vm29.types">IDATA</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#J9PORT_MEMTAG_VALID_TAG">J9PORT_MEMTAG_VALID_TAG</a></span></code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>static long</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#ROUNDING_GRANULARITY">ROUNDING_GRANULARITY</a></span></code></th> |
| <td class="colLast"> </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| </section> |
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| <h3>Constructor Summary</h3> |
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| <caption><span>Constructors</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Constructor</th> |
| <th class="colLast" scope="col">Description</th> |
| </tr> |
| <tr class="altColor"> |
| <th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E()">J9MemTagHelper</a></span>()</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
| </section> |
| <!-- ========== METHOD SUMMARY =========== --> |
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| <h3>Method Summary</h3> |
| <table class="memberSummary"> |
| <caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd"> </span></span><span id="t1" class="tableTab"><span><a href="javascript:show(1);">Static Methods</a></span><span class="tabEnd"> </span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd"> </span></span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colSecond" scope="col">Method</th> |
| <th class="colLast" scope="col">Description</th> |
| </tr> |
| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code>static void</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#checkPadding(com.ibm.j9ddr.vm29.pointer.generated.J9MemTagPointer)">checkPadding</a></span>​(com.ibm.j9ddr.vm29.pointer.generated.J9MemTagPointer headerTagAddress)</code></th> |
| <td class="colLast"> |
| <div class="block">Checks that the padding associated with the memory block has not been |
| corrupted</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>static void</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#checkTagSumCheck(com.ibm.j9ddr.vm29.pointer.generated.J9MemTagPointer,long)">checkTagSumCheck</a></span>​(com.ibm.j9ddr.vm29.pointer.generated.J9MemTagPointer tag, |
| long eyeCatcher)</code></th> |
| <td class="colLast"> |
| <div class="block">Checks that the memory tag is not corrupt.</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>static <a href="../../types/IDATA.html" title="class in com.ibm.j9ddr.vm29.types">IDATA</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#j9mem_check_tags(com.ibm.j9ddr.vm29.pointer.VoidPointer,long,long)">j9mem_check_tags</a></span>​(<a href="../VoidPointer.html" title="class in com.ibm.j9ddr.vm29.pointer">VoidPointer</a> memoryPointer, |
| long headerEyecatcher, |
| long footerEyecatcher)</code></th> |
| <td class="colLast"> |
| <div class="block">Performs validation checks on the memory block starting at memoryPointer.</div> |
| </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>static <a href="../VoidPointer.html" title="class in com.ibm.j9ddr.vm29.pointer">VoidPointer</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#j9mem_get_footer_padding(com.ibm.j9ddr.vm29.pointer.generated.J9MemTagPointer)">j9mem_get_footer_padding</a></span>​(com.ibm.j9ddr.vm29.pointer.generated.J9MemTagPointer headerEyeCatcherAddress)</code></th> |
| <td class="colLast"> |
| <div class="block">Given the address of the headerEyecatcher for the memory block, return |
| the address of the footer padding.</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>static com.ibm.j9ddr.vm29.pointer.generated.J9MemTagPointer</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#j9mem_get_footer_tag(com.ibm.j9ddr.vm29.pointer.generated.J9MemTagPointer)">j9mem_get_footer_tag</a></span>​(com.ibm.j9ddr.vm29.pointer.generated.J9MemTagPointer headerEyeCatcherAddress)</code></th> |
| <td class="colLast"> |
| <div class="block">Given the address of the headerEyecatcher for the memory block, return |
| the address of the corresponding footer tag.</div> |
| </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code>static com.ibm.j9ddr.vm29.pointer.generated.J9MemTagPointer</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#j9mem_get_header_tag(com.ibm.j9ddr.vm29.pointer.VoidPointer)">j9mem_get_header_tag</a></span>​(<a href="../VoidPointer.html" title="class in com.ibm.j9ddr.vm29.pointer">VoidPointer</a> memoryPointer)</code></th> |
| <td class="colLast"> |
| <div class="block">Given the address returned by @ref j9mem_allocate_memory(), return |
| address of the header tag for the memory block</div> |
| </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code>static <a href="../VoidPointer.html" title="class in com.ibm.j9ddr.vm29.pointer">VoidPointer</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#j9mem_get_memory_base(com.ibm.j9ddr.vm29.pointer.generated.J9MemTagPointer)">j9mem_get_memory_base</a></span>​(com.ibm.j9ddr.vm29.pointer.generated.J9MemTagPointer headerEyeCatcherAddress)</code></th> |
| <td class="colLast"> |
| <div class="block">Given the address of the headerEyecatcher for the memory block, return |
| the memory pointer that was returned by j9mem_allocate_memory() when the |
| block was allocated.</div> |
| </td> |
| </tr> |
| <tr id="i7" class="rowColor"> |
| <td class="colFirst"><code>static <a href="../../types/UDATA.html" title="class in com.ibm.j9ddr.vm29.types">UDATA</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#ROUNDED_FOOTER_OFFSET(com.ibm.j9ddr.vm29.types.UDATA)">ROUNDED_FOOTER_OFFSET</a></span>​(<a href="../../types/UDATA.html" title="class in com.ibm.j9ddr.vm29.types">UDATA</a> number)</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| </table> |
| <ul class="blockList"> |
| <li class="blockList"><a id="methods.inherited.from.class.java.lang.Object"> |
| <!-- --> |
| </a> |
| <h3>Methods declared in class java.lang.<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true" title="class or interface in java.lang" class="externalLink" target="_blank">Object</a></h3> |
| <code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true#clone()" title="class or interface in java.lang" class="externalLink" target="_blank">clone</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true#equals(java.lang.Object)" title="class or interface in java.lang" class="externalLink" target="_blank">equals</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true#finalize()" title="class or interface in java.lang" class="externalLink" target="_blank">finalize</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true#getClass()" title="class or interface in java.lang" class="externalLink" target="_blank">getClass</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true#hashCode()" title="class or interface in java.lang" class="externalLink" target="_blank">hashCode</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true#notify()" title="class or interface in java.lang" class="externalLink" target="_blank">notify</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true#notifyAll()" title="class or interface in java.lang" class="externalLink" target="_blank">notifyAll</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true#toString()" title="class or interface in java.lang" class="externalLink" target="_blank">toString</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true#wait()" title="class or interface in java.lang" class="externalLink" target="_blank">wait</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true#wait(long)" title="class or interface in java.lang" class="externalLink" target="_blank">wait</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html?is-external=true#wait(long,int)" title="class or interface in java.lang" class="externalLink" target="_blank">wait</a></code></li> |
| </ul> |
| </li> |
| </ul> |
| </section> |
| </li> |
| </ul> |
| </div> |
| <div class="details"> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <!-- ============ FIELD DETAIL =========== --> |
| <section role="region"> |
| <ul class="blockList"> |
| <li class="blockList"><a id="field.detail"> |
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| </a> |
| <h3>Field Detail</h3> |
| <a id="ROUNDING_GRANULARITY"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>ROUNDING_GRANULARITY</h4> |
| <pre>public static final long ROUNDING_GRANULARITY</pre> |
| <dl> |
| <dt><span class="seeLabel">See Also:</span></dt> |
| <dd><a href="../../../../../../../constant-values.html#com.ibm.j9ddr.vm29.pointer.helper.J9MemTagHelper.ROUNDING_GRANULARITY">Constant Field Values</a></dd> |
| </dl> |
| </li> |
| </ul> |
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| </a> |
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| <li class="blockList"> |
| <h4>J9PORT_MEMTAG_HEADER_TAG_CORRUPTED</h4> |
| <pre>public static <a href="../../types/IDATA.html" title="class in com.ibm.j9ddr.vm29.types">IDATA</a> J9PORT_MEMTAG_HEADER_TAG_CORRUPTED</pre> |
| </li> |
| </ul> |
| <a id="J9PORT_MEMTAG_FOOTER_TAG_CORRUPTED"> |
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| </a> |
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| <h4>J9PORT_MEMTAG_FOOTER_TAG_CORRUPTED</h4> |
| <pre>public static <a href="../../types/IDATA.html" title="class in com.ibm.j9ddr.vm29.types">IDATA</a> J9PORT_MEMTAG_FOOTER_TAG_CORRUPTED</pre> |
| </li> |
| </ul> |
| <a id="J9PORT_MEMTAG_FOOTER_PADDING_CORRUPTED"> |
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| </a> |
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| <h4>J9PORT_MEMTAG_FOOTER_PADDING_CORRUPTED</h4> |
| <pre>public static <a href="../../types/IDATA.html" title="class in com.ibm.j9ddr.vm29.types">IDATA</a> J9PORT_MEMTAG_FOOTER_PADDING_CORRUPTED</pre> |
| </li> |
| </ul> |
| <a id="J9PORT_MEMTAG_NOT_A_TAG"> |
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| </a> |
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| <h4>J9PORT_MEMTAG_NOT_A_TAG</h4> |
| <pre>public static <a href="../../types/IDATA.html" title="class in com.ibm.j9ddr.vm29.types">IDATA</a> J9PORT_MEMTAG_NOT_A_TAG</pre> |
| </li> |
| </ul> |
| <a id="J9PORT_MEMTAG_VALID_TAG"> |
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| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>J9PORT_MEMTAG_VALID_TAG</h4> |
| <pre>public static <a href="../../types/IDATA.html" title="class in com.ibm.j9ddr.vm29.types">IDATA</a> J9PORT_MEMTAG_VALID_TAG</pre> |
| </li> |
| </ul> |
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| </section> |
| <!-- ========= CONSTRUCTOR DETAIL ======== --> |
| <section role="region"> |
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| <li class="blockList"><a id="constructor.detail"> |
| <!-- --> |
| </a> |
| <h3>Constructor Detail</h3> |
| <a id="<init>()"> |
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| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>J9MemTagHelper</h4> |
| <pre>public J9MemTagHelper()</pre> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </section> |
| <!-- ============ METHOD DETAIL ========== --> |
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| </a> |
| <h3>Method Detail</h3> |
| <a id="j9mem_check_tags(com.ibm.j9ddr.vm29.pointer.VoidPointer,long,long)"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>j9mem_check_tags</h4> |
| <pre class="methodSignature">public static <a href="../../types/IDATA.html" title="class in com.ibm.j9ddr.vm29.types">IDATA</a> j9mem_check_tags​(<a href="../VoidPointer.html" title="class in com.ibm.j9ddr.vm29.pointer">VoidPointer</a> memoryPointer, |
| long headerEyecatcher, |
| long footerEyecatcher) |
| throws <a href="J9MemTagHelper.J9MemTagCheckError.html" title="class in com.ibm.j9ddr.vm29.pointer.helper">J9MemTagHelper.J9MemTagCheckError</a></pre> |
| <div class="block">Performs validation checks on the memory block starting at memoryPointer. |
| |
| The memory passed in could fall into one of three categories: |
| 1) It could be a valid J9MemTag region with valid headers and footers |
| 2) It could be not be a J9MemTag region |
| 3) It could be a J9MemTag region with some corruption in either the header, footer or padding</div> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>J9PORT_MEMTAG_NOT_A_TAG if memoryPointer address is not a tag |
| J9PORT_MEMTAG_HEADER_TAG_CORRUPTED if memoryPointer address is valid tag region but header tag is corrupted. |
| J9PORT_MEMTAG_FOOTER_TAG_CORRUPTED if memoryPointer address is valid tag region but footer tag is corrupted. |
| J9PORT_MEMTAG_FOOTER_PADDING_CORRUPTED if memoryPointer address is valid tag region but footer padding is corrupted. |
| J9PORT_MEMTAG_VALID_TAG if memoryPointer address is valid tag and header/footer are not corrupted.</dd> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="../../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></code> - if the tags are corrupted, or the memory is inaccessible. (Option 3)</dd> |
| <dd><code><a href="J9MemTagHelper.J9MemTagCheckError.html" title="class in com.ibm.j9ddr.vm29.pointer.helper">J9MemTagHelper.J9MemTagCheckError</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="checkTagSumCheck(com.ibm.j9ddr.vm29.pointer.generated.J9MemTagPointer,long)"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>checkTagSumCheck</h4> |
| <pre class="methodSignature">public static void checkTagSumCheck​(com.ibm.j9ddr.vm29.pointer.generated.J9MemTagPointer tag, |
| long eyeCatcher) |
| throws <a href="../../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></pre> |
| <div class="block">Checks that the memory tag is not corrupt.</div> |
| <dl> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="../../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="j9mem_get_memory_base(com.ibm.j9ddr.vm29.pointer.generated.J9MemTagPointer)"> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>j9mem_get_memory_base</h4> |
| <pre class="methodSignature">public static <a href="../VoidPointer.html" title="class in com.ibm.j9ddr.vm29.pointer">VoidPointer</a> j9mem_get_memory_base​(com.ibm.j9ddr.vm29.pointer.generated.J9MemTagPointer headerEyeCatcherAddress)</pre> |
| <div class="block">Given the address of the headerEyecatcher for the memory block, return |
| the memory pointer that was returned by j9mem_allocate_memory() when the |
| block was allocated.</div> |
| </li> |
| </ul> |
| <a id="j9mem_get_footer_tag(com.ibm.j9ddr.vm29.pointer.generated.J9MemTagPointer)"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>j9mem_get_footer_tag</h4> |
| <pre class="methodSignature">public static com.ibm.j9ddr.vm29.pointer.generated.J9MemTagPointer j9mem_get_footer_tag​(com.ibm.j9ddr.vm29.pointer.generated.J9MemTagPointer headerEyeCatcherAddress) |
| throws <a href="../../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></pre> |
| <div class="block">Given the address of the headerEyecatcher for the memory block, return |
| the address of the corresponding footer tag.</div> |
| <dl> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="../../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="j9mem_get_header_tag(com.ibm.j9ddr.vm29.pointer.VoidPointer)"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>j9mem_get_header_tag</h4> |
| <pre class="methodSignature">public static com.ibm.j9ddr.vm29.pointer.generated.J9MemTagPointer j9mem_get_header_tag​(<a href="../VoidPointer.html" title="class in com.ibm.j9ddr.vm29.pointer">VoidPointer</a> memoryPointer)</pre> |
| <div class="block">Given the address returned by @ref j9mem_allocate_memory(), return |
| address of the header tag for the memory block</div> |
| </li> |
| </ul> |
| <a id="checkPadding(com.ibm.j9ddr.vm29.pointer.generated.J9MemTagPointer)"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>checkPadding</h4> |
| <pre class="methodSignature">public static void checkPadding​(com.ibm.j9ddr.vm29.pointer.generated.J9MemTagPointer headerTagAddress) |
| throws <a href="../../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></pre> |
| <div class="block">Checks that the padding associated with the memory block has not been |
| corrupted</div> |
| <dl> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="../../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="j9mem_get_footer_padding(com.ibm.j9ddr.vm29.pointer.generated.J9MemTagPointer)"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>j9mem_get_footer_padding</h4> |
| <pre class="methodSignature">public static <a href="../VoidPointer.html" title="class in com.ibm.j9ddr.vm29.pointer">VoidPointer</a> j9mem_get_footer_padding​(com.ibm.j9ddr.vm29.pointer.generated.J9MemTagPointer headerEyeCatcherAddress) |
| throws <a href="../../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></pre> |
| <div class="block">Given the address of the headerEyecatcher for the memory block, return |
| the address of the footer padding. |
| |
| Note that there not be any padding, in which case this returns the same |
| as @ref j9mem_get_footer_tag(), the address of the footer tag.</div> |
| <dl> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="../../../CorruptDataException.html" title="class in com.ibm.j9ddr">CorruptDataException</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="ROUNDED_FOOTER_OFFSET(com.ibm.j9ddr.vm29.types.UDATA)"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>ROUNDED_FOOTER_OFFSET</h4> |
| <pre class="methodSignature">public static <a href="../../types/UDATA.html" title="class in com.ibm.j9ddr.vm29.types">UDATA</a> ROUNDED_FOOTER_OFFSET​(<a href="../../types/UDATA.html" title="class in com.ibm.j9ddr.vm29.types">UDATA</a> number)</pre> |
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