1 /*
2 * Copyright (C) 2010 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
23 * THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26 #include "config.h"
27 #include "NPRuntimeUtilities.h"
28
29 #include <wtf/text/CString.h>
30
31 namespace WebKit {
32
npnMemAlloc(uint32_t size)33 void* npnMemAlloc(uint32_t size)
34 {
35 // We could use fastMalloc here, but there might be plug-ins that mix NPN_MemAlloc/NPN_MemFree with malloc and free,
36 // so having them be equivalent seems like a good idea.
37 return malloc(size);
38 }
39
npnMemFree(void * ptr)40 void npnMemFree(void* ptr)
41 {
42 // We could use fastFree here, but there might be plug-ins that mix NPN_MemAlloc/NPN_MemFree with malloc and free,
43 // so having them be equivalent seems like a good idea.
44 free(ptr);
45 }
46
createNPString(const CString & string)47 NPString createNPString(const CString& string)
48 {
49 char* utf8Characters = npnMemNewArray<char>(string.length());
50 memcpy(utf8Characters, string.data(), string.length());
51
52 NPString npString;
53 npString.UTF8Characters = utf8Characters;
54 npString.UTF8Length = string.length();
55
56 return npString;
57 }
58
createNPObject(NPP npp,NPClass * npClass)59 NPObject* createNPObject(NPP npp, NPClass* npClass)
60 {
61 ASSERT(npClass);
62
63 NPObject* npObject;
64 if (npClass->allocate)
65 npObject = npClass->allocate(npp, npClass);
66 else
67 npObject = npnMemNew<NPObject>();
68
69 npObject->_class = npClass;
70 npObject->referenceCount = 1;
71
72 return npObject;
73 }
74
deallocateNPObject(NPObject * npObject)75 void deallocateNPObject(NPObject* npObject)
76 {
77 ASSERT(npObject);
78 if (!npObject)
79 return;
80
81 if (npObject->_class->deallocate)
82 npObject->_class->deallocate(npObject);
83 else
84 npnMemFree(npObject);
85 }
86
retainNPObject(NPObject * npObject)87 void retainNPObject(NPObject* npObject)
88 {
89 ASSERT(npObject);
90 if (!npObject)
91 return;
92
93 npObject->referenceCount++;
94 }
95
releaseNPObject(NPObject * npObject)96 void releaseNPObject(NPObject* npObject)
97 {
98 ASSERT(npObject);
99 if (!npObject)
100 return;
101
102 ASSERT(npObject->referenceCount >= 1);
103 npObject->referenceCount--;
104 if (!npObject->referenceCount)
105 deallocateNPObject(npObject);
106 }
107
releaseNPVariantValue(NPVariant * variant)108 void releaseNPVariantValue(NPVariant* variant)
109 {
110 ASSERT(variant);
111
112 switch (variant->type) {
113 case NPVariantType_Void:
114 case NPVariantType_Null:
115 case NPVariantType_Bool:
116 case NPVariantType_Int32:
117 case NPVariantType_Double:
118 // Nothing to do.
119 break;
120
121 case NPVariantType_String:
122 npnMemFree(const_cast<NPUTF8*>(variant->value.stringValue.UTF8Characters));
123 variant->value.stringValue.UTF8Characters = 0;
124 variant->value.stringValue.UTF8Length = 0;
125 break;
126 case NPVariantType_Object:
127 releaseNPObject(variant->value.objectValue);
128 variant->value.objectValue = 0;
129 break;
130 }
131
132 variant->type = NPVariantType_Void;
133 }
134
135 } // namespace WebKit
136