Nikolay Sivov : dwrite: Fix excessive refcount increment when setting interface pointers as range attributes.
Alexandre Julliard
julliard at wine.codeweavers.com
Thu Mar 12 10:48:18 CDT 2015
Module: wine
Branch: master
Commit: 985bff76be11799a1317e8195318ef31a6162e2e
URL: http://source.winehq.org/git/wine.git/?a=commit;h=985bff76be11799a1317e8195318ef31a6162e2e
Author: Nikolay Sivov <nsivov at codeweavers.com>
Date: Wed Mar 11 22:20:34 2015 +0300
dwrite: Fix excessive refcount increment when setting interface pointers as range attributes.
---
dlls/dwrite/layout.c | 34 ++++++++++++++++------------------
dlls/dwrite/tests/layout.c | 26 ++++++++++++++++++++++++++
2 files changed, 42 insertions(+), 18 deletions(-)
diff --git a/dlls/dwrite/layout.c b/dlls/dwrite/layout.c
index b4833c2..2665664 100644
--- a/dlls/dwrite/layout.c
+++ b/dlls/dwrite/layout.c
@@ -775,6 +775,19 @@ static struct layout_range *get_layout_range_by_pos(struct dwrite_textlayout *la
return NULL;
}
+static inline BOOL set_layout_range_iface_attr(IUnknown **dest, IUnknown *value)
+{
+ if (*dest == value) return FALSE;
+
+ if (*dest)
+ IUnknown_Release(*dest);
+ *dest = value;
+ if (*dest)
+ IUnknown_AddRef(*dest);
+
+ return TRUE;
+}
+
static BOOL set_layout_range_attrval(struct layout_range *dest, enum layout_range_attr_kind attr, struct layout_range_attr_value *value)
{
BOOL changed = FALSE;
@@ -797,20 +810,10 @@ static BOOL set_layout_range_attrval(struct layout_range *dest, enum layout_rang
dest->fontsize = value->u.fontsize;
break;
case LAYOUT_RANGE_ATTR_INLINE:
- changed = dest->object != value->u.object;
- if (changed && dest->object)
- IDWriteInlineObject_Release(dest->object);
- dest->object = value->u.object;
- if (dest->object)
- IDWriteInlineObject_AddRef(dest->object);
+ changed = set_layout_range_iface_attr((IUnknown**)&dest->object, (IUnknown*)value->u.object);
break;
case LAYOUT_RANGE_ATTR_EFFECT:
- changed = dest->effect != value->u.effect;
- if (changed && dest->effect)
- IUnknown_Release(dest->effect);
- dest->effect = value->u.effect;
- if (dest->effect)
- IUnknown_AddRef(dest->effect);
+ changed = set_layout_range_iface_attr((IUnknown**)&dest->effect, (IUnknown*)value->u.effect);
break;
case LAYOUT_RANGE_ATTR_UNDERLINE:
changed = dest->underline != value->u.underline;
@@ -821,12 +824,7 @@ static BOOL set_layout_range_attrval(struct layout_range *dest, enum layout_rang
dest->strikethrough = value->u.strikethrough;
break;
case LAYOUT_RANGE_ATTR_FONTCOLL:
- changed = dest->collection != value->u.collection;
- if (changed && dest->collection)
- IDWriteFontCollection_Release(dest->collection);
- dest->collection = value->u.collection;
- if (dest->collection)
- IDWriteFontCollection_AddRef(dest->collection);
+ changed = set_layout_range_iface_attr((IUnknown**)&dest->collection, (IUnknown*)value->u.collection);
break;
case LAYOUT_RANGE_ATTR_LOCALE:
changed = strcmpW(dest->locale, value->u.locale) != 0;
diff --git a/dlls/dwrite/tests/layout.c b/dlls/dwrite/tests/layout.c
index 98358a4..89c96e4 100644
--- a/dlls/dwrite/tests/layout.c
+++ b/dlls/dwrite/tests/layout.c
@@ -691,6 +691,9 @@ static void test_SetInlineObject(void)
hr = IDWriteFactory_CreateEllipsisTrimmingSign(factory, format, &inlineobj2);
ok(hr == S_OK, "got 0x%08x\n", hr);
+ EXPECT_REF(inlineobj, 1);
+ EXPECT_REF(inlineobj2, 1);
+
inlinetest = (void*)0x1;
hr = IDWriteTextLayout_GetInlineObject(layout, 0, &inlinetest, NULL);
ok(hr == S_OK, "got 0x%08x\n", hr);
@@ -701,6 +704,8 @@ static void test_SetInlineObject(void)
hr = IDWriteTextLayout_SetInlineObject(layout, inlineobj, range);
ok(hr == S_OK, "got 0x%08x\n", hr);
+ EXPECT_REF(inlineobj, 2);
+
inlinetest = (void*)0x1;
hr = IDWriteTextLayout_GetInlineObject(layout, 2, &inlinetest, NULL);
ok(hr == S_OK, "got 0x%08x\n", hr);
@@ -714,6 +719,8 @@ static void test_SetInlineObject(void)
ok(r2.startPosition == 0 && r2.length == 2, "got %d, %d\n", r2.startPosition, r2.length);
IDWriteInlineObject_Release(inlinetest);
+ EXPECT_REF(inlineobj, 2);
+
/* get from somewhere inside a range */
inlinetest = NULL;
r2.startPosition = r2.length = 100;
@@ -723,6 +730,8 @@ static void test_SetInlineObject(void)
ok(r2.startPosition == 0 && r2.length == 2, "got %d, %d\n", r2.startPosition, r2.length);
IDWriteInlineObject_Release(inlinetest);
+ EXPECT_REF(inlineobj, 2);
+
range.startPosition = 1;
range.length = 1;
hr = IDWriteTextLayout_SetInlineObject(layout, inlineobj2, range);
@@ -736,6 +745,9 @@ static void test_SetInlineObject(void)
ok(r2.startPosition == 1 && r2.length == 1, "got %d, %d\n", r2.startPosition, r2.length);
IDWriteInlineObject_Release(inlinetest);
+ EXPECT_REF(inlineobj, 2);
+ EXPECT_REF(inlineobj2, 2);
+
inlinetest = NULL;
r2.startPosition = r2.length = 100;
hr = IDWriteTextLayout_GetInlineObject(layout, 0, &inlinetest, &r2);
@@ -744,6 +756,8 @@ static void test_SetInlineObject(void)
ok(r2.startPosition == 0 && r2.length == 1, "got %d, %d\n", r2.startPosition, r2.length);
IDWriteInlineObject_Release(inlinetest);
+ EXPECT_REF(inlineobj, 2);
+
range.startPosition = 1;
range.length = 1;
hr = IDWriteTextLayout_SetInlineObject(layout, inlineobj, range);
@@ -756,11 +770,15 @@ static void test_SetInlineObject(void)
ok(r2.startPosition == 0 && r2.length == 2, "got %d, %d\n", r2.startPosition, r2.length);
IDWriteInlineObject_Release(inlinetest);
+ EXPECT_REF(inlineobj, 2);
+
range.startPosition = 1;
range.length = 2;
hr = IDWriteTextLayout_SetInlineObject(layout, inlineobj, range);
ok(hr == S_OK, "got 0x%08x\n", hr);
+ EXPECT_REF(inlineobj, 2);
+
r2.startPosition = r2.length = 100;
hr = IDWriteTextLayout_GetInlineObject(layout, 0, &inlinetest, &r2);
ok(hr == S_OK, "got 0x%08x\n", hr);
@@ -768,7 +786,15 @@ static void test_SetInlineObject(void)
ok(r2.startPosition == 0 && r2.length == 3, "got %d, %d\n", r2.startPosition, r2.length);
IDWriteInlineObject_Release(inlinetest);
+ EXPECT_REF(inlineobj, 2);
+ EXPECT_REF(inlineobj2, 1);
+
IDWriteTextLayout_Release(layout);
+
+ EXPECT_REF(inlineobj, 1);
+
+ IDWriteInlineObject_Release(inlineobj);
+ IDWriteInlineObject_Release(inlineobj2);
IDWriteTextFormat_Release(format);
}
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