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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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 https://mozilla.org/MPL/2.0/. */
#ifndef mozilla_freestanding_Freestanding_h
#define mozilla_freestanding_Freestanding_h
/**
* This header is automatically included in all source code residing in the
* /browser/app/winlauncher/freestanding directory.
*/
#if defined(__STDC_HOSTED__) && __STDC_HOSTED__ == 1
# error "This header should only be included by freestanding code"
#endif // defined(__STDC_HOSTED__) && __STDC_HOSTED__ == 1
#define MOZ_USE_LAUNCHER_ERROR
#include "mozilla/NativeNt.h"
namespace mozilla {
namespace freestanding {
/**
* Since this library is the only part of firefox.exe that needs special
* treatment with respect to the heap, we implement |RtlNew| and |RtlDelete|
* to be used instead of |new| and |delete| for any heap allocations inside
* the freestanding library.
*/
template <typename T, typename... Args>
inline static T* RtlNew(Args&&... aArgs) {
HANDLE processHeap = nt::RtlGetProcessHeap();
if (!processHeap) {
// Handle the case where the process heap is not initialized because
// passing nullptr to RtlAllocateHeap crashes the process.
return nullptr;
}
void* ptr = ::RtlAllocateHeap(processHeap, 0, sizeof(T));
if (!ptr) {
return nullptr;
}
return new (ptr) T(std::forward<Args>(aArgs)...);
}
template <typename T>
inline static void RtlDelete(T* aPtr) {
if (!aPtr) {
return;
}
aPtr->~T();
::RtlFreeHeap(nt::RtlGetProcessHeap(), 0, aPtr);
}
} // namespace freestanding
} // namespace mozilla
// Initialization code for all statically-allocated data in freestanding is
// placed into a separate section. This allows us to initialize any
// freestanding statics without needing to initialize everything else in this
// binary.
#pragma init_seg(".freestd$g")
#endif // mozilla_freestanding_Freestanding_h
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