mirror of
https://gitea.wildfiregames.com/0ad/0ad
synced 2026-06-21 07:43:59 -07:00
1861448e6c
also rename wchar -> utf8 to avoid conflict with <wchar.h> (requires rebuild of workspace) (unfortunately copying history fails to "502 bad gateway"; had to delete old + add new independently) This was SVN commit r7340.
212 lines
4.5 KiB
C++
212 lines
4.5 KiB
C++
/* Copyright (c) 2010 Wildfire Games
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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/*
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* various Windows-specific utilities
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*/
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#ifndef INCLUDED_WUTIL
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#define INCLUDED_WUTIL
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#if !OS_WIN
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#error "wutil.h: do not include if not compiling for Windows"
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#endif
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#include "lib/sysdep/os/win/win.h"
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template<typename H>
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bool wutil_IsValidHandle(H h)
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{
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return h != 0 && h != INVALID_HANDLE_VALUE;
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}
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//
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// safe allocator
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//
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extern void* win_alloc(size_t size);
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extern void win_free(void* p);
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//
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// locks
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//
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// critical sections used by win-specific code
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enum WinLockId
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{
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WAIO_CS,
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WDBG_SYM_CS, // protects (non-reentrant) dbghelp.dll
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WHRT_CS,
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WNUMA_CS,
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WDIR_WATCH_CS,
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NUM_CS
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};
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extern void win_lock(WinLockId id);
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extern void win_unlock(WinLockId id);
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// used in a desperate attempt to avoid deadlock in wseh.
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extern bool win_is_locked(WinLockId id);
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class WinScopedLock
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{
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public:
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WinScopedLock(WinLockId id)
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: m_id(id)
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{
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win_lock(m_id);
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}
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~WinScopedLock()
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{
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win_unlock(m_id);
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}
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private:
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WinLockId m_id;
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};
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//
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// errors
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//
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/**
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* some WinAPI functions SetLastError(0) on success, which is bad because
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* it can hide previous errors. this class takes care of restoring the
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* previous value.
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**/
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class WinScopedPreserveLastError
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{
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public:
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WinScopedPreserveLastError()
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: m_lastError(GetLastError())
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{
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SetLastError(0);
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}
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~WinScopedPreserveLastError()
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{
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if(m_lastError != 0 && GetLastError() == 0)
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SetLastError(m_lastError);
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}
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private:
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DWORD m_lastError;
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};
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/**
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* @return the LibError equivalent of GetLastError(), or ERR::FAIL if
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* there's no equivalent.
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* you should SetLastError(0) before calling whatever will set ret
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* to make sure we do not report any stale errors.
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*
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* @param warn_if_failed if set, raises an error dialog that reports
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* the LibError.
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**/
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LibError LibError_from_GLE(bool warn_if_failed = true);
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#define WARN_WIN32_ERR (void)LibError_from_GLE(true)
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/// if ret is false, returns LibError_from_GLE.
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extern LibError LibError_from_win32(DWORD ret, bool warn_if_failed = true);
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//
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// command line
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//
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extern int wutil_argc;
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extern wchar_t** wutil_argv;
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extern bool wutil_HasCommandLineArgument(const wchar_t* arg);
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//
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// directories
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//
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extern const fs::wpath& wutil_SystemPath();
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extern const fs::wpath& wutil_ExecutablePath();
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extern const fs::wpath& wutil_AppdataPath();
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//
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// version
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//
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extern const char* wutil_WindowsVersionString();
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// (same format as WINVER)
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const size_t WUTIL_VERSION_2K = 0x0500;
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const size_t WUTIL_VERSION_XP = 0x0501;
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const size_t WUTIL_VERSION_XP64 = 0x0502;
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const size_t WUTIL_VERSION_VISTA = 0x0600;
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/**
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* @return short textual representation of the appropriate WUTIL_VERSION
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**/
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extern const char* wutil_WindowsFamily();
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extern size_t wutil_WindowsVersion();
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//
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// Wow64
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//
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extern bool wutil_IsWow64();
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class WinScopedDisableWow64Redirection
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{
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public:
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WinScopedDisableWow64Redirection();
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~WinScopedDisableWow64Redirection();
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private:
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void* m_wasRedirectionEnabled;
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};
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/**
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* module handle of lib code (that of the main EXE if linked statically,
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* otherwise the DLL).
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* this is necessary for the error dialog.
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**/
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extern HMODULE wutil_LibModuleHandle;
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/**
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* @return handle to the first window owned by the current process, or
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* 0 if none exist (e.g. it hasn't yet created one).
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*
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* enumerates all top-level windows and stops if PID matches.
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* once this function returns a non-NULL handle, it will always
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* return that cached value.
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**/
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extern HWND wutil_AppWindow();
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#endif // #ifndef INCLUDED_WUTIL
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