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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
commit | 36d22d82aa202bb199967e9512281e9a53db42c9 (patch) | |
tree | 105e8c98ddea1c1e4784a60a5a6410fa416be2de /browser/app/winlauncher/freestanding/Freestanding.h | |
parent | Initial commit. (diff) | |
download | firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip |
Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'browser/app/winlauncher/freestanding/Freestanding.h')
-rw-r--r-- | browser/app/winlauncher/freestanding/Freestanding.h | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/browser/app/winlauncher/freestanding/Freestanding.h b/browser/app/winlauncher/freestanding/Freestanding.h new file mode 100644 index 0000000000..03999f231e --- /dev/null +++ b/browser/app/winlauncher/freestanding/Freestanding.h @@ -0,0 +1,67 @@ +/* -*- 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 |