mirror of
https://github.com/Atmosphere-NX/Atmosphere
synced 2024-09-20 15:18:59 +00:00
109 lines
3.9 KiB
C++
109 lines
3.9 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/>.
|
|
*/
|
|
#pragma once
|
|
#include <mesosphere/kern_common.hpp>
|
|
#include <mesosphere/kern_select_cpu.hpp>
|
|
#include <mesosphere/kern_slab_helpers.hpp>
|
|
#include <mesosphere/kern_k_page_buffer.hpp>
|
|
|
|
namespace ams::kern {
|
|
|
|
class KThread;
|
|
class KProcess;
|
|
|
|
class KThreadLocalPage : public util::IntrusiveRedBlackTreeBaseNode<KThreadLocalPage>, public KSlabAllocated<KThreadLocalPage> {
|
|
public:
|
|
static constexpr size_t RegionsPerPage = PageSize / ams::svc::ThreadLocalRegionSize;
|
|
static_assert(RegionsPerPage > 0);
|
|
private:
|
|
KProcessAddress m_virt_addr;
|
|
KProcess *m_owner;
|
|
bool m_is_region_free[RegionsPerPage];
|
|
public:
|
|
constexpr explicit KThreadLocalPage(KProcessAddress addr) : m_virt_addr(addr), m_owner(nullptr), m_is_region_free() {
|
|
for (size_t i = 0; i < RegionsPerPage; i++) {
|
|
m_is_region_free[i] = true;
|
|
}
|
|
}
|
|
|
|
constexpr explicit KThreadLocalPage() : KThreadLocalPage(Null<KProcessAddress>) { /* ... */ }
|
|
|
|
constexpr ALWAYS_INLINE KProcessAddress GetAddress() const { return m_virt_addr; }
|
|
|
|
static constexpr ALWAYS_INLINE int Compare(const KThreadLocalPage &lhs, const KThreadLocalPage &rhs) {
|
|
const KProcessAddress lval = lhs.GetAddress();
|
|
const KProcessAddress rval = rhs.GetAddress();
|
|
|
|
if (lval < rval) {
|
|
return -1;
|
|
} else if (lval == rval) {
|
|
return 0;
|
|
} else {
|
|
return 1;
|
|
}
|
|
}
|
|
private:
|
|
constexpr ALWAYS_INLINE KProcessAddress GetRegionAddress(size_t i) {
|
|
return this->GetAddress() + i * ams::svc::ThreadLocalRegionSize;
|
|
}
|
|
|
|
constexpr ALWAYS_INLINE bool Contains(KProcessAddress addr) {
|
|
return this->GetAddress() <= addr && addr < this->GetAddress() + PageSize;
|
|
}
|
|
|
|
constexpr ALWAYS_INLINE size_t GetRegionIndex(KProcessAddress addr) {
|
|
MESOSPHERE_ASSERT(util::IsAligned(GetInteger(addr), ams::svc::ThreadLocalRegionSize));
|
|
MESOSPHERE_ASSERT(this->Contains(addr));
|
|
return (addr - this->GetAddress()) / ams::svc::ThreadLocalRegionSize;
|
|
}
|
|
public:
|
|
Result Initialize(KProcess *process);
|
|
Result Finalize();
|
|
|
|
KProcessAddress Reserve();
|
|
void Release(KProcessAddress addr);
|
|
|
|
void *GetPointer() const;
|
|
|
|
bool IsAllUsed() const {
|
|
for (size_t i = 0; i < RegionsPerPage; i++) {
|
|
if (m_is_region_free[i]) {
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
bool IsAllFree() const {
|
|
for (size_t i = 0; i < RegionsPerPage; i++) {
|
|
if (!m_is_region_free[i]) {
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
bool IsAnyUsed() const {
|
|
return !this->IsAllFree();
|
|
}
|
|
|
|
bool IsAnyFree() const {
|
|
return !this->IsAllUsed();
|
|
}
|
|
};
|
|
|
|
}
|