hotspot/src/share/vm/prims/jvmtiEnv.xsl
author ysr
Thu, 03 Dec 2009 15:01:57 -0800
changeset 4461 c17c526d36ef
parent 1 489c9b5090e2
child 5547 f4b087cbb361
permissions -rw-r--r--
6906727: UseCompressedOops: some card-marking fixes related to object arrays Summary: Introduced a new write_ref_array(HeapWords* start, size_t count) method that does the requisite MemRegion range calculation so (some of the) clients of the erstwhile write_ref_array(MemRegion mr) do not need to worry. This removed all external uses of array_size(), which was also simplified and made private. Asserts were added to catch other possible issues. Further, less essential, fixes stemming from this investigation are deferred to CR 6904516 (to follow shortly in hs17). Reviewed-by: kvn, coleenp, jmasa

<?xml version="1.0"?> 
<!--
 Copyright 2002-2006 Sun Microsystems, Inc.  All Rights Reserved.
 DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 This code is free software; you can redistribute it and/or modify it
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 published by the Free Software Foundation.

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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>
# include "incls/_precompiled.incl"
# include "incls/_jvmtiEnv.cpp.incl"

// 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>