/* 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_