/src/mozilla-central/gfx/gl/GLLibraryLoader.cpp
Line | Count | Source (jump to first uncovered line) |
1 | | /* This Source Code Form is subject to the terms of the Mozilla Public |
2 | | * License, v. 2.0. If a copy of the MPL was not distributed with this file, |
3 | | * You can obtain one at http://mozilla.org/MPL/2.0/. */ |
4 | | |
5 | | #include "GLLibraryLoader.h" |
6 | | |
7 | | #include "nsDebug.h" |
8 | | |
9 | | #ifdef WIN32 |
10 | | #include <windows.h> |
11 | | #endif |
12 | | |
13 | | namespace mozilla { |
14 | | namespace gl { |
15 | | |
16 | | bool |
17 | | GLLibraryLoader::OpenLibrary(const char* library) |
18 | 0 | { |
19 | 0 | PRLibSpec lspec; |
20 | 0 | lspec.type = PR_LibSpec_Pathname; |
21 | 0 | lspec.value.pathname = library; |
22 | 0 |
|
23 | 0 | mLibrary = PR_LoadLibraryWithFlags(lspec, PR_LD_LAZY | PR_LD_LOCAL); |
24 | 0 | if (!mLibrary) |
25 | 0 | return false; |
26 | 0 | |
27 | 0 | return true; |
28 | 0 | } |
29 | | |
30 | | bool |
31 | | GLLibraryLoader::LoadSymbols(const SymLoadStruct* firstStruct, |
32 | | bool tryplatform, |
33 | | const char* prefix, |
34 | | bool warnOnFailure) |
35 | 0 | { |
36 | 0 | return LoadSymbols(mLibrary, |
37 | 0 | firstStruct, |
38 | 0 | tryplatform ? mLookupFunc : nullptr, |
39 | 0 | prefix, |
40 | 0 | warnOnFailure); |
41 | 0 | } |
42 | | |
43 | | PRFuncPtr |
44 | | GLLibraryLoader::LookupSymbol(const char* sym) |
45 | 0 | { |
46 | 0 | return LookupSymbol(mLibrary, sym, mLookupFunc); |
47 | 0 | } |
48 | | |
49 | | PRFuncPtr |
50 | | GLLibraryLoader::LookupSymbol(PRLibrary* lib, |
51 | | const char* sym, |
52 | | PlatformLookupFunction lookupFunction) |
53 | 0 | { |
54 | 0 | PRFuncPtr res = 0; |
55 | 0 |
|
56 | 0 | // try finding it in the library directly, if we have one |
57 | 0 | if (lib) { |
58 | 0 | res = PR_FindFunctionSymbol(lib, sym); |
59 | 0 | } |
60 | 0 |
|
61 | 0 | // then try looking it up via the lookup symbol |
62 | 0 | if (!res && lookupFunction) { |
63 | 0 | res = lookupFunction(sym); |
64 | 0 | } |
65 | 0 |
|
66 | 0 | // finally just try finding it in the process |
67 | 0 | if (!res) { |
68 | 0 | PRLibrary* leakedLibRef; |
69 | 0 | res = PR_FindFunctionSymbolAndLibrary(sym, &leakedLibRef); |
70 | 0 | } |
71 | 0 |
|
72 | 0 | return res; |
73 | 0 | } |
74 | | |
75 | | bool |
76 | | GLLibraryLoader::LoadSymbols(PRLibrary* lib, |
77 | | const SymLoadStruct* firstStruct, |
78 | | PlatformLookupFunction lookupFunction, |
79 | | const char* prefix, |
80 | | bool warnOnFailure) |
81 | 0 | { |
82 | 0 | char sbuf[MAX_SYMBOL_LENGTH * 2]; |
83 | 0 | int failCount = 0; |
84 | 0 |
|
85 | 0 | const SymLoadStruct* ss = firstStruct; |
86 | 0 | while (ss->symPointer) { |
87 | 0 | *ss->symPointer = 0; |
88 | 0 |
|
89 | 0 | for (int i = 0; i < MAX_SYMBOL_NAMES; i++) { |
90 | 0 | if (ss->symNames[i] == nullptr) |
91 | 0 | break; |
92 | 0 | |
93 | 0 | const char* s = ss->symNames[i]; |
94 | 0 | if (prefix && *prefix != 0) { |
95 | 0 | strcpy(sbuf, prefix); |
96 | 0 | strcat(sbuf, ss->symNames[i]); |
97 | 0 | s = sbuf; |
98 | 0 | } |
99 | 0 |
|
100 | 0 | PRFuncPtr p = LookupSymbol(lib, s, lookupFunction); |
101 | 0 | if (p) { |
102 | 0 | *ss->symPointer = p; |
103 | 0 | break; |
104 | 0 | } |
105 | 0 | } |
106 | 0 |
|
107 | 0 | if (*ss->symPointer == 0) { |
108 | 0 | if (warnOnFailure) { |
109 | 0 | printf_stderr("Can't find symbol '%s'.\n", ss->symNames[0]); |
110 | 0 | } |
111 | 0 |
|
112 | 0 | failCount++; |
113 | 0 | } |
114 | 0 |
|
115 | 0 | ss++; |
116 | 0 | } |
117 | 0 |
|
118 | 0 | return failCount == 0 ? true : false; |
119 | 0 | } |
120 | | |
121 | | /*static*/ void |
122 | | GLLibraryLoader::ClearSymbols(const SymLoadStruct* const firstStruct) |
123 | 0 | { |
124 | 0 | for (auto cur = firstStruct; cur->symPointer; ++cur) { |
125 | 0 | *cur->symPointer = nullptr; |
126 | 0 | } |
127 | 0 | } |
128 | | |
129 | | } /* namespace gl */ |
130 | | } /* namespace mozilla */ |
131 | | |