mirror of https://github.com/PCSX2/pcsx2.git
224 lines
5.9 KiB
C++
224 lines
5.9 KiB
C++
/* PCSX2 - PS2 Emulator for PCs
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* Copyright (C) 2002-2010 PCSX2 Dev Team
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*
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* PCSX2 is free software: you can redistribute it and/or modify it under the terms
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* of the GNU Lesser General Public License as published by the Free Software Found-
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* ation, either version 3 of the License, or (at your option) any later version.
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*
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* PCSX2 is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
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* PURPOSE. See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along with PCSX2.
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* If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include <atomic>
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#include <wx/string.h>
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#include "common/Pcsx2Defs.h"
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// This macro is actually useful for about any and every possible application of C++
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// equality operators.
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#define OpEqu(field) (field == right.field)
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// Macro used for removing some of the redtape involved in defining bitfield/union helpers.
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//
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#define BITFIELD32() \
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union \
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{ \
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u32 bitset; \
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struct \
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{
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#define BITFIELD_END \
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}; \
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};
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// ----------------------------------------------------------------------------------------
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// RecursionGuard - Basic protection against function recursion
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// ----------------------------------------------------------------------------------------
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// Thread safety note: If used in a threaded environment, you shoud use a handle to a __threadlocal
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// storage variable (protects aaginst race conditions and, in *most* cases, is more desirable
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// behavior as well.
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//
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// Rationale: wxWidgets has its own wxRecursionGuard, but it has a sloppy implementation with
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// entirely unnecessary assertion checks.
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//
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class RecursionGuard
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{
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public:
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int& Counter;
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RecursionGuard(int& counter)
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: Counter(counter)
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{
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++Counter;
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}
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virtual ~RecursionGuard()
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{
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--Counter;
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}
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bool IsReentrant() const { return Counter > 1; }
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};
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// --------------------------------------------------------------------------------------
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// ICloneable / IActionInvocation / IDeletableObject
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// --------------------------------------------------------------------------------------
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class IActionInvocation
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{
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public:
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virtual ~IActionInvocation() = default;
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virtual void InvokeAction() = 0;
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};
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class ICloneable
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{
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public:
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virtual ICloneable* Clone() const = 0;
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};
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class IDeletableObject
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{
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public:
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virtual ~IDeletableObject() = default;
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virtual void DeleteSelf() = 0;
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virtual bool IsBeingDeleted() = 0;
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protected:
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// This function is GUI implementation dependent! It's implemented by PCSX2's AppHost,
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// but if the SysCore is being linked to another front end, you'll need to implement this
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// yourself. Most GUIs have built in message pumps. If a platform lacks one then you'll
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// need to implement one yourself (yay?).
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virtual void DoDeletion() = 0;
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};
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// --------------------------------------------------------------------------------------
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// PageProtectionMode
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// --------------------------------------------------------------------------------------
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class PageProtectionMode
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{
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protected:
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bool m_read;
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bool m_write;
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bool m_exec;
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public:
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PageProtectionMode()
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{
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All(false);
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}
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PageProtectionMode& Read(bool allow = true)
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{
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m_read = allow;
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return *this;
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}
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PageProtectionMode& Write(bool allow = true)
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{
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m_write = allow;
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return *this;
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}
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PageProtectionMode& Execute(bool allow = true)
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{
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m_exec = allow;
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return *this;
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}
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PageProtectionMode& All(bool allow = true)
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{
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m_read = m_write = m_exec = allow;
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return *this;
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}
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bool CanRead() const { return m_read; }
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bool CanWrite() const { return m_write; }
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bool CanExecute() const { return m_exec && m_read; }
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bool IsNone() const { return !m_read && !m_write; }
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wxString ToString() const;
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};
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static __fi PageProtectionMode PageAccess_None()
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{
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return PageProtectionMode();
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}
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static __fi PageProtectionMode PageAccess_ReadOnly()
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{
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return PageProtectionMode().Read();
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}
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static __fi PageProtectionMode PageAccess_WriteOnly()
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{
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return PageProtectionMode().Write();
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}
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static __fi PageProtectionMode PageAccess_ReadWrite()
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{
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return PageAccess_ReadOnly().Write();
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}
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static __fi PageProtectionMode PageAccess_ExecOnly()
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{
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return PageAccess_ReadOnly().Execute();
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}
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static __fi PageProtectionMode PageAccess_Any()
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{
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return PageProtectionMode().All();
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}
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// --------------------------------------------------------------------------------------
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// HostSys
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// --------------------------------------------------------------------------------------
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// (this namespace name sucks, and is a throw-back to an older attempt to make things cross
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// platform prior to wxWidgets .. it should prolly be removed -- air)
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namespace HostSys
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{
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void* MmapReserve(uptr base, size_t size);
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bool MmapCommit(uptr base, size_t size, const PageProtectionMode& mode);
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void MmapReset(uptr base, size_t size);
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void* MmapReservePtr(void* base, size_t size);
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bool MmapCommitPtr(void* base, size_t size, const PageProtectionMode& mode);
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void MmapResetPtr(void* base, size_t size);
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// Maps a block of memory for use as a recompiled code buffer.
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// Returns NULL on allocation failure.
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extern void* Mmap(uptr base, size_t size);
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// Unmaps a block allocated by SysMmap
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extern void Munmap(uptr base, size_t size);
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extern void MemProtect(void* baseaddr, size_t size, const PageProtectionMode& mode);
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extern void Munmap(void* base, size_t size);
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template <uint size>
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void MemProtectStatic(u8 (&arr)[size], const PageProtectionMode& mode)
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{
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MemProtect(arr, size, mode);
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}
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} // namespace HostSys
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// Safe version of Munmap -- NULLs the pointer variable immediately after free'ing it.
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#define SafeSysMunmap(ptr, size) \
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((void)(HostSys::Munmap((uptr)(ptr), size), (ptr) = 0))
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extern void InitCPUTicks();
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extern u64 GetTickFrequency();
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extern u64 GetCPUTicks();
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extern u64 GetPhysicalMemory();
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extern wxString GetOSVersionString();
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void ScreensaverAllow(bool allow);
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