gfx/gl/GLLibraryLoader.h@b8a032363ba2 (annotated)
gfx/gl/GLLibraryLoader.h
Thu, 22 Jan 2015 13:21:57 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Thu, 22 Jan 2015 13:21:57 +0100
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
- permissions
- -rw-r--r--
Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6
| michael@0 | 1 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 2 | * License, v. 2.0. If a copy of the MPL was not distributed with this file, |
| michael@0 | 3 | * You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 4 | |
| michael@0 | 5 | #ifndef GLLIBRARYLOADER_H_ |
| michael@0 | 6 | #define GLLIBRARYLOADER_H_ |
| michael@0 | 7 | |
| michael@0 | 8 | #include <stdio.h> |
| michael@0 | 9 | |
| michael@0 | 10 | #ifdef WIN32 |
| michael@0 | 11 | #include <windows.h> |
| michael@0 | 12 | #endif |
| michael@0 | 13 | |
| michael@0 | 14 | #include "GLDefs.h" |
| michael@0 | 15 | #include "nscore.h" |
| michael@0 | 16 | #include "prlink.h" |
| michael@0 | 17 | |
| michael@0 | 18 | namespace mozilla { |
| michael@0 | 19 | namespace gl { |
| michael@0 | 20 | |
| michael@0 | 21 | class GLLibraryLoader |
| michael@0 | 22 | { |
| michael@0 | 23 | public: |
| michael@0 | 24 | bool OpenLibrary(const char *library); |
| michael@0 | 25 | |
| michael@0 | 26 | typedef PRFuncPtr (GLAPIENTRY * PlatformLookupFunction) (const char *); |
| michael@0 | 27 | |
| michael@0 | 28 | enum { |
| michael@0 | 29 | MAX_SYMBOL_NAMES = 6, |
| michael@0 | 30 | MAX_SYMBOL_LENGTH = 128 |
| michael@0 | 31 | }; |
| michael@0 | 32 | |
| michael@0 | 33 | typedef struct { |
| michael@0 | 34 | PRFuncPtr *symPointer; |
| michael@0 | 35 | const char *symNames[MAX_SYMBOL_NAMES]; |
| michael@0 | 36 | } SymLoadStruct; |
| michael@0 | 37 | |
| michael@0 | 38 | bool LoadSymbols(SymLoadStruct *firstStruct, |
| michael@0 | 39 | bool tryplatform = false, |
| michael@0 | 40 | const char *prefix = nullptr, |
| michael@0 | 41 | bool warnOnFailure = true); |
| michael@0 | 42 | |
| michael@0 | 43 | /* |
| michael@0 | 44 | * Static version of the functions in this class |
| michael@0 | 45 | */ |
| michael@0 | 46 | static PRFuncPtr LookupSymbol(PRLibrary *lib, |
| michael@0 | 47 | const char *symname, |
| michael@0 | 48 | PlatformLookupFunction lookupFunction = nullptr); |
| michael@0 | 49 | static bool LoadSymbols(PRLibrary *lib, |
| michael@0 | 50 | SymLoadStruct *firstStruct, |
| michael@0 | 51 | PlatformLookupFunction lookupFunction = nullptr, |
| michael@0 | 52 | const char *prefix = nullptr, |
| michael@0 | 53 | bool warnOnFailure = true); |
| michael@0 | 54 | protected: |
| michael@0 | 55 | GLLibraryLoader() { |
| michael@0 | 56 | mLibrary = nullptr; |
| michael@0 | 57 | mLookupFunc = nullptr; |
| michael@0 | 58 | } |
| michael@0 | 59 | |
| michael@0 | 60 | PRLibrary *mLibrary; |
| michael@0 | 61 | PlatformLookupFunction mLookupFunc; |
| michael@0 | 62 | }; |
| michael@0 | 63 | |
| michael@0 | 64 | } /* namespace gl */ |
| michael@0 | 65 | } /* namespace mozilla */ |
| michael@0 | 66 | |
| michael@0 | 67 | #endif /* GLLIBRARYLOADER_H_ */ |
