Nikolay Sivov : xmllite: Shrink buffer when enough data processed.
Alexandre Julliard
julliard at winehq.org
Wed Dec 26 14:05:17 CST 2012
Module: wine
Branch: master
Commit: beffac006ce867c51da145ec28648432eaa9fb66
URL: http://source.winehq.org/git/wine.git/?a=commit;h=beffac006ce867c51da145ec28648432eaa9fb66
Author: Nikolay Sivov <nsivov at codeweavers.com>
Date: Fri Dec 21 09:35:30 2012 +0400
xmllite: Shrink buffer when enough data processed.
---
dlls/xmllite/reader.c | 18 ++++++++++++++++++
1 files changed, 18 insertions(+), 0 deletions(-)
diff --git a/dlls/xmllite/reader.c b/dlls/xmllite/reader.c
index 9e32216..38c7a5e 100644
--- a/dlls/xmllite/reader.c
+++ b/dlls/xmllite/reader.c
@@ -481,6 +481,7 @@ static void readerinput_switchencoding(xmlreaderinput *readerinput, xml_encoding
{
readerinput_grow(readerinput, len);
memcpy(dest->data, src->cur, len);
+ dest->written += len*sizeof(WCHAR);
readerinput->buffer->code_page = cp;
return;
}
@@ -491,6 +492,22 @@ static void readerinput_switchencoding(xmlreaderinput *readerinput, xml_encoding
MultiByteToWideChar(cp, 0, src->cur, len, ptr, dest_len);
ptr[dest_len] = 0;
readerinput->buffer->code_page = cp;
+ dest->written += dest_len*sizeof(WCHAR);
+}
+
+/* shrinks parsed data a buffer begins with */
+static void reader_shrink(xmlreader *reader)
+{
+ encoded_buffer *buffer = &reader->input->buffer->utf16;
+
+ /* avoid to move too often using threshold shrink length */
+ if (buffer->cur - buffer->data > buffer->written / 2)
+ {
+ buffer->written -= buffer->cur - buffer->data;
+ memmove(buffer->data, buffer->cur, buffer->written);
+ buffer->cur = buffer->data;
+ *(WCHAR*)&buffer->cur[buffer->written] = 0;
+ }
}
static inline const WCHAR *reader_get_cur(xmlreader *reader)
@@ -772,6 +789,7 @@ static HRESULT reader_parse_comment(xmlreader *reader)
/* skip '<!--' */
reader_skipn(reader, 4);
+ reader_shrink(reader);
ptr = start = reader_get_cur(reader);
while (*ptr)
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