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globals: Remove unused globals from thread storage

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Setting these deprecated globals hasn't had an effect for a long time.
Make them constants. This reduces the size of per-thread storage from
~700 to ~250 bytes.
This commit is contained in:
Nick Wellnhofer 2023-12-06 01:09:31 +01:00
parent be558647c1
commit c011e7605d
6 changed files with 78 additions and 68 deletions
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15
HTMLparser.c
View File

@ -4844,10 +4844,12 @@ htmlParseDocument(htmlParserCtxtPtr ctxt) {
}
/*
* SAX: beginning of the document processing.
* Document locator is unused. Only for backward compatibility.
*/
if ((ctxt->sax) && (ctxt->sax->setDocumentLocator))
ctxt->sax->setDocumentLocator(ctxt->userData, &xmlDefaultSAXLocator);
if ((ctxt->sax) && (ctxt->sax->setDocumentLocator)) {
xmlSAXLocator copy = xmlDefaultSAXLocator;
ctxt->sax->setDocumentLocator(ctxt->userData, &copy);
}
xmlDetectEncoding(ctxt);
@ -5435,9 +5437,10 @@ htmlParseTryOrFinish(htmlParserCtxtPtr ctxt, int terminate) {
SKIP_BLANKS;
avail = in->end - in->cur;
}
if ((ctxt->sax) && (ctxt->sax->setDocumentLocator))
ctxt->sax->setDocumentLocator(ctxt->userData,
&xmlDefaultSAXLocator);
if ((ctxt->sax) && (ctxt->sax->setDocumentLocator)) {
xmlSAXLocator copy = xmlDefaultSAXLocator;
ctxt->sax->setDocumentLocator(ctxt->userData, &copy);
}
if ((ctxt->sax) && (ctxt->sax->startDocument) &&
(!ctxt->disableSAX))
ctxt->sax->startDocument(ctxt->userData);

1
doc/apibuild.py
View File

@ -63,7 +63,6 @@ ignored_words = {
"XML_DEPRECATED": (0, "macro keyword"),
"XML_GLOBALS_ALLOC": (0, "macro keyword"),
"XML_GLOBALS_ERROR": (0, "macro keyword"),
"XML_GLOBALS_HTML": (0, "macro keyword"),
"XML_GLOBALS_IO": (0, "macro keyword"),
"XML_GLOBALS_PARSER": (0, "macro keyword"),
"XML_GLOBALS_SAVE": (0, "macro keyword"),

47
globals.c
View File

@ -20,7 +20,6 @@
#include <libxml/xmlerror.h>
#include <libxml/xmlmemory.h>
#include <libxml/xmlIO.h>
#include <libxml/HTMLparser.h>
#include <libxml/parser.h>
#include <libxml/threads.h>
#include <libxml/tree.h>
@ -79,7 +78,6 @@ struct _xmlGlobalState {
#define XML_OP XML_DECLARE_MEMBER
XML_GLOBALS_ALLOC
XML_GLOBALS_ERROR
XML_GLOBALS_HTML
XML_GLOBALS_IO
XML_GLOBALS_PARSER
XML_GLOBALS_SAVE
@ -265,7 +263,7 @@ static int xmlDefaultBufferSizeThrDef = BASE_BUFFER_SIZE;
*
* Global setting, DEPRECATED.
*/
int oldXMLWDcompatibility = 0; /* DEPRECATED */
const int oldXMLWDcompatibility = 0; /* DEPRECATED */
/**
* xmlParserDebugEntities:
*
@ -461,7 +459,7 @@ static int xmlSaveNoEmptyTagsThrDef = 0;
*
* Default SAX version1 handler for XML, builds the DOM tree
*/
xmlSAXHandlerV1 xmlDefaultSAXHandler = {
const xmlSAXHandlerV1 xmlDefaultSAXHandler = {
xmlSAX2InternalSubset,
xmlSAX2IsStandalone,
xmlSAX2HasInternalSubset,
@ -501,7 +499,7 @@ xmlSAXHandlerV1 xmlDefaultSAXHandler = {
* The default SAX Locator
* { getPublicId, getSystemId, getLineNumber, getColumnNumber}
*/
xmlSAXLocator xmlDefaultSAXLocator = {
const xmlSAXLocator xmlDefaultSAXLocator = {
xmlSAX2GetPublicId,
xmlSAX2GetSystemId,
xmlSAX2GetLineNumber,
@ -517,7 +515,7 @@ xmlSAXLocator xmlDefaultSAXLocator = {
*
* Default old SAX v1 handler for HTML, builds the DOM tree
*/
xmlSAXHandlerV1 htmlDefaultSAXHandler = {
const xmlSAXHandlerV1 htmlDefaultSAXHandler = {
xmlSAX2InternalSubset,
NULL,
NULL,
@ -757,20 +755,8 @@ static void
xmlInitGlobalState(xmlGlobalStatePtr gs) {
xmlMutexLock(&xmlThrDefMutex);
#if defined(LIBXML_HTML_ENABLED) && defined(LIBXML_LEGACY_ENABLED) && defined(LIBXML_SAX1_ENABLED)
inithtmlDefaultSAXHandler(&gs->gs_htmlDefaultSAXHandler);
#endif
gs->gs_oldXMLWDcompatibility = 0;
gs->gs_xmlBufferAllocScheme = xmlBufferAllocSchemeThrDef;
gs->gs_xmlDefaultBufferSize = xmlDefaultBufferSizeThrDef;
#if defined(LIBXML_SAX1_ENABLED) && defined(LIBXML_LEGACY_ENABLED)
initxmlDefaultSAXHandler(&gs->gs_xmlDefaultSAXHandler, 1);
#endif /* LIBXML_SAX1_ENABLED */
gs->gs_xmlDefaultSAXLocator.getPublicId = xmlSAX2GetPublicId;
gs->gs_xmlDefaultSAXLocator.getSystemId = xmlSAX2GetSystemId;
gs->gs_xmlDefaultSAXLocator.getLineNumber = xmlSAX2GetLineNumber;
gs->gs_xmlDefaultSAXLocator.getColumnNumber = xmlSAX2GetColumnNumber;
gs->gs_xmlDoValidityCheckingDefaultValue =
xmlDoValidityCheckingDefaultValueThrDef;
#ifdef LIBXML_THREAD_ALLOC_ENABLED
@ -905,7 +891,6 @@ xmlGetThreadLocalStorage(int allowFailure) {
#define XML_OP XML_DEFINE_GLOBAL_WRAPPER
XML_GLOBALS_ALLOC
XML_GLOBALS_ERROR
XML_GLOBALS_HTML
XML_GLOBALS_IO
XML_GLOBALS_PARSER
XML_GLOBALS_SAVE
@ -919,6 +904,30 @@ __xmlParserVersion(void) {
return &xmlParserVersion;
}
const int *
__oldXMLWDcompatibility(void) {
return &oldXMLWDcompatibility;
}
const xmlSAXLocator *
__xmlDefaultSAXLocator(void) {
return &xmlDefaultSAXLocator;
}
#ifdef LIBXML_SAX1_ENABLED
const xmlSAXHandlerV1 *
__xmlDefaultSAXHandler(void) {
return &xmlDefaultSAXHandler;
}
#ifdef LIBXML_HTML_ENABLED
const xmlSAXHandlerV1 *
__htmlDefaultSAXHandler(void) {
return &htmlDefaultSAXHandler;
}
#endif /* LIBXML_HTML_ENABLED */
#endif /* LIBXML_SAX1_ENABLED */
#endif /* LIBXML_THREAD_ENABLED */
/**

27
include/libxml/HTMLparser.h
View File

@ -80,22 +80,17 @@ struct _htmlEntityDesc {
const char *desc; /* the description */
};
/** DOC_DISABLE */
#ifdef LIBXML_SAX1_ENABLED
#define XML_GLOBALS_HTML \
XML_OP(htmlDefaultSAXHandler, xmlSAXHandlerV1, XML_DEPRECATED)
#else
#define XML_GLOBALS_HTML
XML_DEPRECATED
XMLPUBVAR const xmlSAXHandlerV1 htmlDefaultSAXHandler;
#ifdef LIBXML_THREAD_ENABLED
XML_DEPRECATED
XMLPUBFUN const xmlSAXHandlerV1 *__htmlDefaultSAXHandler(void);
#endif
#define XML_OP XML_DECLARE_GLOBAL
XML_GLOBALS_HTML
#undef XML_OP
#if defined(LIBXML_THREAD_ENABLED) && !defined(XML_GLOBALS_NO_REDEFINITION)
#define htmlDefaultSAXHandler XML_GLOBAL_MACRO(htmlDefaultSAXHandler)
#endif
/** DOC_ENABLE */
#endif /* LIBXML_SAX1_ENABLED */
/*
* There is only few public functions.
@ -333,11 +328,5 @@ XMLPUBFUN htmlStatus htmlNodeStatus(htmlNodePtr, int) ;
}
#endif
#else /* LIBXML_HTML_ENABLED */
/** DOC_DISABLE */
#define XML_GLOBALS_HTML
/** DOC_ENABLE */
#endif /* LIBXML_HTML_ENABLED */
#endif /* __HTML_PARSER_H__ */

32
include/libxml/parser.h
View File

@ -841,15 +841,30 @@ typedef xmlParserInputPtr (*xmlExternalEntityLoader) (const char *URL,
*/
XMLPUBVAR const char *const xmlParserVersion;
XML_DEPRECATED
XMLPUBVAR const int oldXMLWDcompatibility;
XML_DEPRECATED
XMLPUBVAR const xmlSAXLocator xmlDefaultSAXLocator;
#ifdef LIBXML_SAX1_ENABLED
XML_DEPRECATED
XMLPUBVAR const xmlSAXHandlerV1 xmlDefaultSAXHandler;
#endif
#ifdef LIBXML_THREAD_ENABLED
/* backward compatibility */
XMLPUBFUN const char *const *__xmlParserVersion(void);
XML_DEPRECATED
XMLPUBFUN const int *__oldXMLWDcompatibility(void);
XML_DEPRECATED
XMLPUBFUN const xmlSAXLocator *__xmlDefaultSAXLocator(void);
#ifdef LIBXML_SAX1_ENABLED
XML_DEPRECATED
XMLPUBFUN const xmlSAXHandlerV1 *__xmlDefaultSAXHandler(void);
#endif
#endif
/** DOC_DISABLE */
#define XML_GLOBALS_PARSER_CORE \
XML_OP(oldXMLWDcompatibility, int, XML_DEPRECATED) \
XML_OP(xmlDefaultSAXLocator, xmlSAXLocator, XML_DEPRECATED) \
#define XML_GLOBALS_PARSER \
XML_OP(xmlDoValidityCheckingDefaultValue, int, XML_DEPRECATED) \
XML_OP(xmlGetWarningsDefaultValue, int, XML_DEPRECATED) \
XML_OP(xmlKeepBlanksDefaultValue, int, XML_DEPRECATED) \
@ -859,17 +874,6 @@ XMLPUBFUN const char *const *__xmlParserVersion(void);
XML_OP(xmlPedanticParserDefaultValue, int, XML_DEPRECATED) \
XML_OP(xmlSubstituteEntitiesDefaultValue, int, XML_DEPRECATED)
#ifdef LIBXML_SAX1_ENABLED
#define XML_GLOBALS_PARSER_SAX1 \
XML_OP(xmlDefaultSAXHandler, xmlSAXHandlerV1, XML_DEPRECATED)
#else
#define XML_GLOBALS_PARSER_SAX1
#endif
#define XML_GLOBALS_PARSER \
XML_GLOBALS_PARSER_CORE \
XML_GLOBALS_PARSER_SAX1
#define XML_OP XML_DECLARE_GLOBAL
XML_GLOBALS_PARSER
#undef XML_OP

24
parser.c
View File

@ -11022,10 +11022,13 @@ xmlParseDocument(xmlParserCtxtPtr ctxt) {
xmlDetectSAX2(ctxt);
/*
* SAX: beginning of the document processing.
* Document locator is unused. Only for backward compatibility.
*/
if ((ctxt->sax) && (ctxt->sax->setDocumentLocator))
ctxt->sax->setDocumentLocator(ctxt->userData, &xmlDefaultSAXLocator);
if ((ctxt->sax) && (ctxt->sax->setDocumentLocator)) {
xmlSAXLocator copy = xmlDefaultSAXLocator;
ctxt->sax->setDocumentLocator(ctxt->userData, &copy);
}
if (ctxt->instate == XML_PARSER_EOF)
return(-1);
@ -11185,10 +11188,12 @@ xmlParseExtParsedEnt(xmlParserCtxtPtr ctxt) {
xmlDetectSAX2(ctxt);
/*
* SAX: beginning of the document processing.
* Document locator is unused. Only for backward compatibility.
*/
if ((ctxt->sax) && (ctxt->sax->setDocumentLocator))
ctxt->sax->setDocumentLocator(ctxt->userData, &xmlDefaultSAXLocator);
if ((ctxt->sax) && (ctxt->sax->setDocumentLocator)) {
xmlSAXLocator copy = xmlDefaultSAXLocator;
ctxt->sax->setDocumentLocator(ctxt->userData, &copy);
}
xmlDetectEncoding(ctxt);
@ -11673,9 +11678,10 @@ xmlParseTryOrFinish(xmlParserCtxtPtr ctxt, int terminate) {
break;
}
}
if ((ctxt->sax) && (ctxt->sax->setDocumentLocator))
ctxt->sax->setDocumentLocator(ctxt->userData,
&xmlDefaultSAXLocator);
if ((ctxt->sax) && (ctxt->sax->setDocumentLocator)) {
xmlSAXLocator copy = xmlDefaultSAXLocator;
ctxt->sax->setDocumentLocator(ctxt->userData, &copy);
}
if ((ctxt->sax) && (ctxt->sax->startDocument) &&
(!ctxt->disableSAX))
ctxt->sax->startDocument(ctxt->userData);