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