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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef GLLIBRARYLOADER_H_
#define GLLIBRARYLOADER_H_
#include <array>
#include <stdio.h>
#include "GLDefs.h"
#include "nscore.h"
#include "mozilla/Assertions.h"
#include "mozilla/SharedLibrary.h"
namespace mozilla {
namespace gl {
struct SymLoadStruct final {
PRFuncPtr* symPointer;
std::array<const char*, 6> symNames;
};
void ClearSymbols(const SymLoadStruct* firstStruct);
class SymbolLoader final {
public:
typedef PRFuncPtr(GLAPIENTRY* GetProcAddressT)(const char*);
GetProcAddressT mPfn = nullptr; // Try this first, if not null.
PRLibrary* mLib = nullptr;
explicit SymbolLoader(void*(GLAPIENTRY* pfn)(const char*))
: mPfn(GetProcAddressT(pfn)) {
MOZ_ASSERT(mPfn);
}
explicit SymbolLoader(const GetProcAddressT pfn) : mPfn(pfn) {
MOZ_ASSERT(mPfn);
}
explicit SymbolLoader(PRLibrary& lib) : mLib(&lib) { MOZ_ASSERT(mLib); }
PRFuncPtr GetProcAddress(const char*) const;
bool LoadSymbols(const SymLoadStruct* firstStruct,
bool warnOnFailures = true) const;
};
} // namespace gl
} // namespace mozilla
#endif // GLLIBRARYLOADER_H_
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