view src/share/vm/prims/jvmtiEnv.xsl @ 2149:7e37af9d69ef

7011379: G1: overly long concurrent marking cycles Summary: This changeset introduces filtering of SATB buffers at the point when they are about to be enqueued. If this filtering clears enough entries on each buffer, the buffer can then be re-used and not enqueued. This cuts down the number of SATB buffers that need to be processed by the concurrent marking threads. Reviewed-by: johnc, ysr
author tonyp
date Wed, 19 Jan 2011 09:35:17 -0500
parents f95d63e2154a
children da91efe96a93
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<?xml version="1.0"?> 
<!--
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 DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

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-->

<xsl:stylesheet xmlns:xsl="http://www.w3.org/1999/XSL/Transform" version="1.0">

<xsl:import href="jvmtiLib.xsl"/>

<xsl:output method="text" indent="no" omit-xml-declaration="yes"/>

<xsl:template match="/">
  <xsl:apply-templates select="specification"/>
</xsl:template>

<xsl:template match="specification">
  <xsl:call-template name="sourceHeader"/>
  <xsl:text>

// end file prefix - do not modify or remove this line
</xsl:text>
  <xsl:apply-templates select="functionsection"/>
</xsl:template>

<xsl:template match="functionsection">
  <xsl:apply-templates select="category"/>
</xsl:template>

<xsl:template match="category">
  <xsl:text>
  //
  // </xsl:text><xsl:value-of select="@label"/><xsl:text> functions
  // 
</xsl:text>
  <xsl:apply-templates select="function[not(contains(@impl,'unimpl'))]"/>
</xsl:template>

<xsl:template match="function">
  <xsl:apply-templates select="parameters" mode="advice"/>
  <xsl:text>
jvmtiError
JvmtiEnv::</xsl:text>
  <xsl:if test="count(@hide)=1">
    <xsl:value-of select="@hide"/>
  </xsl:if>
  <xsl:value-of select="@id"/>
  <xsl:text>(</xsl:text>
  <xsl:apply-templates select="parameters" mode="HotSpotSig"/>
  <xsl:text>) {</xsl:text>
  <xsl:for-each select="parameters/param/jclass">
    <xsl:if test="count(@method|@field)=0">
<xsl:text>
  if (java_lang_Class::is_primitive(k_mirror)) {
    // DO PRIMITIVE CLASS PROCESSING
    return JVMTI_ERROR_MUST_POSSESS_CAPABILITY;
  }
  klassOop k_oop = java_lang_Class::as_klassOop(k_mirror);
  if (k_oop == NULL) {
    return JVMTI_ERROR_INVALID_CLASS;
  }</xsl:text>
    </xsl:if>
  </xsl:for-each>
<xsl:text>
  return JVMTI_ERROR_MUST_POSSESS_CAPABILITY;
} /* end </xsl:text>
  <xsl:if test="count(@hide)=1">
    <xsl:value-of select="@hide"/>
  </xsl:if>
  <xsl:value-of select="@id"/>
  <xsl:text> */

</xsl:text>
</xsl:template>


<!-- ======== ADVICE ======== -->

<xsl:template match="parameters" mode="advice">
  <xsl:apply-templates select="param" mode="advice"/>
</xsl:template>

<xsl:template match="param" mode="advice">
  <xsl:apply-templates select="child::*[position()=1]" mode="advice">
    <xsl:with-param name="name" select="@id"/>
  </xsl:apply-templates>
</xsl:template>

<xsl:template match="jthread" mode="advice">
  <xsl:param name="name"/>
  <xsl:choose>
    <xsl:when test="count(@impl)=0 or not(contains(@impl,'noconvert'))">
      <xsl:text>
// Threads_lock NOT held, java_thread not protected by lock
// java_thread - pre-checked</xsl:text>
    </xsl:when>
    <xsl:otherwise>
      <xsl:text>
// Threads_lock NOT held
// </xsl:text>
      <xsl:value-of select="$name"/>
      <xsl:text> - NOT pre-checked</xsl:text>
    </xsl:otherwise>
  </xsl:choose>
</xsl:template>

<xsl:template match="jrawMonitorID" mode="advice">
  <xsl:param name="name"/>
  <xsl:text>
// rmonitor - pre-checked for validity</xsl:text>
</xsl:template>

<xsl:template match="jframeID" mode="advice">
  <xsl:param name="name"/>
  <xsl:text>
// java_thread - unchecked 
// depth - pre-checked as non-negative</xsl:text>
</xsl:template>

<xsl:template match="jmethodID" mode="advice">
  <xsl:param name="name"/>
  <xsl:text>
// method_oop - pre-checked for validity, but may be NULL meaning obsolete method</xsl:text>
</xsl:template>

<xsl:template match="jfieldID" mode="advice">
  <xsl:param name="name"/>
</xsl:template>

<xsl:template match="jclass" mode="advice">
  <xsl:param name="name"/>
  <!--
    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>
// k_mirror - may be primitive, this must be checked</xsl:text>
  </xsl:if>
</xsl:template>

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

<xsl:template match="outptr|outbuf|allocfieldbuf|ptrtype|inptr|inbuf|vmbuf|allocbuf|agentbuf|allocallocbuf" mode="advice">
  <xsl:param name="name"/>
  <xsl:choose>
    <xsl:when test="count(nullok)=0">
      <xsl:text>
// </xsl:text>
      <xsl:value-of select="$name"/>
      <xsl:text> - pre-checked for NULL</xsl:text>
    </xsl:when>
    <xsl:otherwise>
      <xsl:text>
// </xsl:text>
      <xsl:value-of select="$name"/>
      <xsl:text> - NULL is a valid value, must be checked</xsl:text>
    </xsl:otherwise>
  </xsl:choose>
</xsl:template>

<xsl:template match="jint" mode="advice">
  <xsl:param name="name"/>
  <xsl:if test="count(@min)=1">
    <xsl:text>
// </xsl:text>
    <xsl:value-of select="$name"/>
    <xsl:text> - pre-checked to be greater than or equal to </xsl:text>
    <xsl:value-of select="@min"/>
  </xsl:if>
</xsl:template>

<xsl:template match="jobject|jvalue|jthreadGroup|enum|jlong|jfloat|jdouble|jlocation|jboolean|char|uchar|size_t|void|varargs|struct" mode="advice">
  <xsl:param name="name"/>
</xsl:template>

</xsl:stylesheet>