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view src/share/vm/prims/jvmtiLib.xsl @ 3917:eca1193ca245

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4965777: GC changes to support use of discovered field for pending references Summary: If and when the reference handler thread is able to use the discovered field to link reference objects in its pending list, so will GC. In that case, GC will scan through this field once a reference object has been placed on the pending list, but not scan that field before that stage, as the field is used by the concurrent GC thread to link discovered objects. When ReferenceHandleR thread does not use the discovered field for the purpose of linking the elements in the pending list, as would be the case in older JDKs, the JVM will fall back to the old behaviour of using the next field for that purpose. Reviewed-by: jcoomes, mchung, stefank
author ysr
date Wed, 07 Sep 2011 13:55:42 -0700
parents c18cbe5936b8
children 70f715dfbb41 da91efe96a93
line wrap: on
line source

<?xml version="1.0" encoding="utf-8"?>
<!--

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</xsl:template>

<xsl:template match="capabilityfield" mode="signature">
  <xsl:text>    unsigned int </xsl:text>
  <xsl:value-of select="@id"/>
  <xsl:text> : 1;
</xsl:text>
</xsl:template>

<xsl:template match="constants" mode="enum">
  <xsl:text>
typedef </xsl:text>
  <xsl:apply-templates select="." mode="enumcore"/>
  <xsl:text> </xsl:text>
  <xsl:value-of select="@id"/>
  <xsl:text>;</xsl:text>
</xsl:template>

<xsl:template match="constants" mode="constants">
  <xsl:text>
</xsl:text>
  <xsl:apply-templates select="." mode="enumcore"/>
  <xsl:text>;</xsl:text>
</xsl:template>

<xsl:template match="constants" mode="enumcore">
  <xsl:text>enum {
</xsl:text>
  <xsl:for-each select="constant">
    <xsl:if test="position() &gt; 1">
      <xsl:text>,
</xsl:text>
    </xsl:if>
    <xsl:apply-templates select="." mode="enum"/>
  </xsl:for-each>
  <xsl:text>
}</xsl:text>
</xsl:template>

<xsl:template match="event" mode="enum">
  <xsl:text>    </xsl:text>
  <xsl:value-of select="@const"/>
  <xsl:text> = </xsl:text>
  <xsl:value-of select="@num"/>
</xsl:template>

<xsl:template match="constant|errorid" mode="enum">
  <xsl:text>    </xsl:text>
  <xsl:value-of select="@id"/>
  <xsl:text> = </xsl:text>
  <xsl:value-of select="@num"/>
</xsl:template>


  <xsl:template name="eventStruct">
    <xsl:param name="events"/>
    <xsl:param name="index"/>
    <xsl:param name="started"/>
    <xsl:param name="comment"/>
    <xsl:variable name="thisEvent" select="$events[@num=$index]"/>
    <xsl:choose>
      <xsl:when test="count($thisEvent)=1">
        <xsl:if test="$comment='Yes'">
          <xsl:text>                              /* </xsl:text>
          <xsl:number value="$index" format="  1"/>
          <xsl:text> : </xsl:text>
          <xsl:value-of select="$thisEvent/@label"/>
          <xsl:text> */
</xsl:text>
        </xsl:if>
        <xsl:text>    jvmtiEvent</xsl:text>
        <xsl:value-of select="$thisEvent/@id"/>
        <xsl:text> </xsl:text>
        <xsl:value-of select="$thisEvent/@id"/>
        <xsl:text>;
</xsl:text>
    </xsl:when>
    <xsl:otherwise>
      <xsl:if test="$started">
        <xsl:if test="$comment='Yes'">
          <xsl:text>                              /* </xsl:text>
          <xsl:number value="$index" format="  1"/>
          <xsl:text> */
</xsl:text>
        </xsl:if>
        <xsl:text>    jvmtiEventReserved reserved</xsl:text>        
        <xsl:value-of select="$index"/>
        <xsl:text>;
</xsl:text>     
    </xsl:if>
  </xsl:otherwise>
</xsl:choose>
    <xsl:if test="count($events[@num &gt; $index]) &gt; 0">
      <xsl:call-template name="eventStruct">
        <xsl:with-param name="events" select="$events"/>
        <xsl:with-param name="index" select="1+$index"/>
        <xsl:with-param name="started" select="$started or count($thisEvent)=1"/>
        <xsl:with-param name="comment" select="$comment"/>
      </xsl:call-template>
    </xsl:if>
  </xsl:template>


<!-- ======== HotSpotType ======== -->

<xsl:template match="parameters" mode="HotSpotSig">
  <xsl:variable name="length" select="count(param)"/>
  <xsl:for-each select="param">
    <xsl:variable name="separator">
        <xsl:choose>
          <xsl:when test="position()=$length">
            <xsl:text></xsl:text>
          </xsl:when>
          <xsl:otherwise>
            <xsl:text>, </xsl:text>
          </xsl:otherwise>
        </xsl:choose>
    </xsl:variable>
    <xsl:apply-templates select="." mode="HotSpotSig">
      <xsl:with-param name="comma" select="$separator"/>
    </xsl:apply-templates>
  </xsl:for-each>
</xsl:template>

<xsl:template match="param" mode="HotSpotSig">
  <xsl:param name="comma"/>
  <xsl:variable name="result">
    <xsl:apply-templates select="child::*[position()=1]" mode="HotSpotType"/>
  </xsl:variable>
  <xsl:if test="string-length($result)!=0">
    <xsl:value-of select="$result"/>
    <xsl:text> </xsl:text>
    <xsl:apply-templates select="child::*[position()=1]" mode="HotSpotName">
      <xsl:with-param name="name" select="@id"/>
    </xsl:apply-templates>
    <xsl:value-of select="$comma"/>    
  </xsl:if>
</xsl:template>

<xsl:template match="jthread" mode="HotSpotType">
  <xsl:choose>
    <xsl:when test="count(@impl)=0 or not(contains(@impl,'noconvert'))">
      <xsl:text>JavaThread*</xsl:text>
    </xsl:when>
    <xsl:otherwise>
      <xsl:value-of select="name()"/>
    </xsl:otherwise>
  </xsl:choose>
</xsl:template>

<xsl:template match="jrawMonitorID" mode="HotSpotType">
  <xsl:text>JvmtiRawMonitor *</xsl:text>
</xsl:template>

<xsl:template match="jframeID" mode="HotSpotType">
  <xsl:text>jint</xsl:text>
</xsl:template>

<xsl:template match="jmethodID" mode="HotSpotType">
  <xsl:text>methodOop</xsl:text>
</xsl:template>

<xsl:template match="jfieldID" mode="HotSpotType">
  <xsl:text>fieldDescriptor*</xsl:text>
</xsl:template>

<xsl:template match="jclass" mode="HotSpotType">
  <!--
    classes passed as part of a class/method or class/field pair are used
    by the wrapper to get the internal type but are not needed by nor 
    passed to the implementation layer.
  -->
  <xsl:if test="count(@method|@field)=0">
    <xsl:text>oop</xsl:text>
  </xsl:if>
</xsl:template>

<xsl:template match="nullok" mode="HotSpotType">
</xsl:template>

<xsl:template match="jobject|jvalue|jthreadGroup|enum|jint|jchar|jlong|jfloat|jdouble|jlocation|jboolean|char|uchar|size_t|void|struct" mode="HotSpotType">
  <xsl:apply-templates select="." mode="btsig"/>
</xsl:template>

<xsl:template match="varargs" mode="HotSpotType">
  <xsl:text> </xsl:text>
</xsl:template>

<xsl:template match="outptr|outbuf|allocfieldbuf" mode="HotSpotType">
  <xsl:apply-templates select="child::*[position()=1]" mode="btsig"/>
  <xsl:text>*</xsl:text>
</xsl:template>

<xsl:template match="ptrtype" mode="HotSpotType">
  <xsl:apply-templates select="child::*[position()=1]" mode="btsig"/>
</xsl:template>

<xsl:template match="inptr|inbuf|vmbuf" mode="HotSpotType">
  <xsl:text>const </xsl:text>
  <xsl:apply-templates select="child::*[position()=1]" mode="btsig"/>
  <xsl:text>*</xsl:text>
</xsl:template>

<xsl:template match="allocbuf|agentbuf" mode="HotSpotType">
  <xsl:apply-templates select="child::*[position()=1]" mode="btsig"/>
  <xsl:text>**</xsl:text>
</xsl:template>

<xsl:template match="allocallocbuf" mode="HotSpotType">
  <xsl:apply-templates select="child::*[position()=1]" mode="btsig"/>
  <xsl:text>***</xsl:text>
</xsl:template>

<!-- ========  HotSpotName ======== -->

<xsl:template match="jthread" mode="HotSpotName">
  <xsl:param name="name"/>
  <xsl:choose>
    <xsl:when test="count(@impl)=0 or not(contains(@impl,'noconvert'))">
      <xsl:text>java_thread</xsl:text>
    </xsl:when>
    <xsl:otherwise>
      <xsl:value-of select="$name"/>
    </xsl:otherwise>
  </xsl:choose>
</xsl:template>

<xsl:template match="jrawMonitorID" mode="HotSpotName">
  <xsl:text>rmonitor</xsl:text>
</xsl:template>

<xsl:template match="jframeID" mode="HotSpotName">
  <xsl:text>depth</xsl:text>
</xsl:template>

<xsl:template match="jmethodID" mode="HotSpotName">
  <xsl:text>method_oop</xsl:text>
</xsl:template>

<xsl:template match="jfieldID" mode="HotSpotName">
  <xsl:text>fdesc_ptr</xsl:text>
</xsl:template>

<xsl:template match="jclass" mode="HotSpotName">
  <!--
    classes passed as part of a class/method or class/field pair are used
    by the wrapper to get the internal type but are not needed by nor 
    passed to the implementation layer.  This value is checked for empty.
  -->
  <xsl:if test="count(@method|@field)=0">
    <xsl:text>k_mirror</xsl:text>
  </xsl:if>
</xsl:template>

<xsl:template match="nullok" mode="HotSpotName">
</xsl:template>

<xsl:template match="jobject|jvalue|jthreadGroup|enum|jint|jchar|jlong|jfloat|jdouble|jlocation|jboolean|char|uchar|size_t|void|varargs|struct|outptr|outbuf|allocfieldbuf|ptrtype|inptr|inbuf|vmbuf|allocbuf|agentbuf|allocallocbuf" mode="HotSpotName">
  <xsl:param name="name"/>
  <xsl:value-of select="$name"/>
</xsl:template>

<!-- ======== HotSpotValue ======== -->


<xsl:template match="parameters" mode="HotSpotValue">
  <xsl:variable name="length" select="count(param)"/>
  <xsl:for-each select="param">
    <xsl:variable name="separator">
        <xsl:choose>
          <xsl:when test="position()=$length">
            <xsl:text></xsl:text>
          </xsl:when>
          <xsl:otherwise>
            <xsl:text>, </xsl:text>
          </xsl:otherwise>
        </xsl:choose>
    </xsl:variable>
    <xsl:apply-templates select="." mode="HotSpotValue">
      <xsl:with-param name="comma" select="$separator"/>
    </xsl:apply-templates>
  </xsl:for-each>
</xsl:template>

<xsl:template match="param" mode="HotSpotValue">
  <xsl:param name="comma"/>
  <xsl:variable name="result">
    <xsl:apply-templates select="child::*[position()=1]" mode="HotSpotValue">
      <xsl:with-param name="name" select="@id"/>
    </xsl:apply-templates>
  </xsl:variable>
  <xsl:if test="string-length($result)!=0">
    <xsl:value-of select="$result"/>
    <xsl:value-of select="$comma"/>    
  </xsl:if>
</xsl:template>

<xsl:template match="jframeID|jmethodID|jrawMonitorID|jthread|jclass|nullok" mode="HotSpotValue">
  <xsl:param name="name"/>
  <xsl:apply-templates select="." mode="HotSpotName">
    <xsl:with-param name="name" select="$name"/>
  </xsl:apply-templates>
</xsl:template>

<xsl:template match="jfieldID" mode="HotSpotValue">
  <xsl:text>&amp;fdesc</xsl:text>
</xsl:template>

<xsl:template match="jobject|jvalue|jthreadGroup|enum|jint|jchar|jlong|jfloat|jdouble|jlocation|jboolean|char|uchar|size_t|void|struct|outptr|outbuf|allocfieldbuf|ptrtype|inptr|inbuf|vmbuf|allocbuf|agentbuf|allocallocbuf" mode="HotSpotValue">
  <xsl:param name="name"/>
  <xsl:value-of select="$name"/>
</xsl:template>

<xsl:template match="varargs" mode="HotSpotValue">
  <xsl:text>NULL</xsl:text>
</xsl:template>

</xsl:stylesheet>