mirror of
https://github.com/Atmosphere-NX/Atmosphere
synced 2024-12-27 15:11:16 +00:00
91 lines
3.3 KiB
C++
91 lines
3.3 KiB
C++
/*
|
|
* Copyright (c) 2018-2020 Atmosphère-NX
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms and conditions of the GNU General Public License,
|
|
* version 2, as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
|
* more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
#include <stratosphere.hpp>
|
|
|
|
namespace ams::sf {
|
|
|
|
namespace cmif {
|
|
|
|
namespace {
|
|
|
|
ALWAYS_INLINE std::atomic<uintptr_t> *GetAtomicSfInlineContext(os::ThreadType *thread) {
|
|
static_assert(sizeof(thread->atomic_sf_inline_context) >= sizeof(std::atomic<uintptr_t>));
|
|
return reinterpret_cast<std::atomic<uintptr_t> *>(std::addressof(thread->atomic_sf_inline_context));
|
|
}
|
|
|
|
ALWAYS_INLINE std::atomic<uintptr_t> *GetAtomicSfInlineContext() {
|
|
return GetAtomicSfInlineContext(os::GetCurrentThread());
|
|
}
|
|
|
|
ALWAYS_INLINE void OnSetInlineContext(os::ThreadType *thread) {
|
|
/* Ensure that libnx receives the priority value. */
|
|
::fsSetPriority(static_cast<::FsPriority>(::ams::sf::GetFsInlineContext(thread)));
|
|
}
|
|
|
|
}
|
|
|
|
InlineContext GetInlineContext() {
|
|
/* Get the context. */
|
|
uintptr_t thread_context = GetAtomicSfInlineContext()->load();
|
|
|
|
/* Copy it out. */
|
|
InlineContext ctx;
|
|
static_assert(sizeof(ctx) <= sizeof(thread_context));
|
|
std::memcpy(std::addressof(ctx), std::addressof(thread_context), sizeof(ctx));
|
|
return ctx;
|
|
}
|
|
|
|
InlineContext SetInlineContext(InlineContext ctx) {
|
|
/* Get current thread. */
|
|
os::ThreadType * const cur_thread = os::GetCurrentThread();
|
|
ON_SCOPE_EXIT { OnSetInlineContext(cur_thread); };
|
|
|
|
/* Create the new context. */
|
|
static_assert(sizeof(ctx) <= sizeof(uintptr_t));
|
|
uintptr_t new_context_value = 0;
|
|
std::memcpy(std::addressof(new_context_value), std::addressof(ctx), sizeof(ctx));
|
|
|
|
/* Get the old context. */
|
|
uintptr_t old_context_value = GetAtomicSfInlineContext(cur_thread)->exchange(new_context_value);
|
|
|
|
/* Convert and copy it out. */
|
|
InlineContext old_ctx;
|
|
std::memcpy(std::addressof(old_ctx), std::addressof(old_context_value), sizeof(old_ctx));
|
|
return old_ctx;
|
|
}
|
|
|
|
}
|
|
|
|
namespace {
|
|
|
|
ALWAYS_INLINE std::atomic<u8> *GetAtomicFsInlineContext(os::ThreadType *thread) {
|
|
static_assert(sizeof(thread->atomic_sf_inline_context) >= sizeof(std::atomic<u8>));
|
|
return reinterpret_cast<std::atomic<u8> *>(std::addressof(thread->atomic_sf_inline_context));
|
|
}
|
|
|
|
}
|
|
|
|
u8 GetFsInlineContext(os::ThreadType *thread) {
|
|
return GetAtomicFsInlineContext(thread)->load();
|
|
}
|
|
|
|
u8 SetFsInlineContext(os::ThreadType *thread, u8 ctx) {
|
|
ON_SCOPE_EXIT { cmif::OnSetInlineContext(thread); };
|
|
|
|
return GetAtomicFsInlineContext(thread)->exchange(ctx);
|
|
}
|
|
|
|
}
|