mirror of https://github.com/PCSX2/pcsx2.git
193 lines
7.5 KiB
C
193 lines
7.5 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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#ifndef __pxFUNCTION__
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#if defined(__GNUG__)
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# define __pxFUNCTION__ __PRETTY_FUNCTION__
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#else
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# define __pxFUNCTION__ __FUNCTION__
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#endif
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#endif
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#ifndef wxNullChar
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# define wxNullChar ((wxChar*)NULL)
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#endif
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// FnChar_t - function name char type; typedef'd in case it ever changes between compilers
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// (ie, a compiler decides to wchar_t it instead of char/UTF8).
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typedef char FnChar_t;
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// --------------------------------------------------------------------------------------
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// DiagnosticOrigin
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// --------------------------------------------------------------------------------------
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struct DiagnosticOrigin
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{
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const wxChar* srcfile;
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const FnChar_t* function;
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const wxChar* condition;
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int line;
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DiagnosticOrigin( const wxChar *_file, int _line, const FnChar_t *_func, const wxChar* _cond = NULL )
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: srcfile( _file )
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, function( _func )
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, condition( _cond )
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, line( _line )
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{
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}
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wxString ToString( const wxChar* msg=NULL ) const;
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};
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// Returns ture if the assertion is to trap into the debugger, or false if execution
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// of the program should continue unimpeded.
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typedef bool pxDoAssertFnType(const DiagnosticOrigin& origin, const wxChar *msg);
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extern pxDoAssertFnType pxAssertImpl_LogIt;
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extern pxDoAssertFnType* pxDoAssert;
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// ----------------------------------------------------------------------------------------
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// pxAssert / pxAssertDev
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// ----------------------------------------------------------------------------------------
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// Standard "nothrow" assertions. All assertions act as valid conditional statements that
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// return the result of the specified conditional; useful for handling failed assertions in
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// a "graceful" fashion when utilizing the "ignore" feature of assertion debugging.
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// These macros are mostly intended for "pseudo-weak" assumptions within code, most often for
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// testing threaded user interface code (threading of the UI is a prime example since often
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// even very robust assertions can fail in very rare conditions, due to the complex variety
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// of ways the user can invoke UI events).
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//
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// All macros return TRUE if the assertion succeeds, or FALSE if the assertion failed
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// (thus matching the condition of the assertion itself).
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//
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// pxAssertDev is an assertion tool for Devel builds, intended for sanity checking and/or
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// bounds checking variables in areas which are not performance critical. Another common
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// use is for checking thread affinity on utility functions.
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//
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// Credits: These macros are based on a combination of wxASSERT, MSVCRT's assert and the
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// ATL's Assertion/Assumption macros. the best of all worlds!
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// --------------------------------------------------------------------------------------
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// pxAssume / pxAssumeDev / pxFail / pxFailDev
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// --------------------------------------------------------------------------------------
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// Assumptions are like "extra rigid" assertions, which should never fail under any circum-
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// stance in release build optimized code.
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//
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// Performance: All assumption/fail types optimize into __assume()/likely() directives in
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// Release builds (non-dev varieties optimize as such in Devel builds as well). If using
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#define pxDiagSpot DiagnosticOrigin( __TFILE__, __LINE__, __pxFUNCTION__ )
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#define pxAssertSpot(cond) DiagnosticOrigin( __TFILE__, __LINE__, __pxFUNCTION__, _T(#cond) )
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// pxAssertRel ->
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// Special release-mode assertion. Limited use since stack traces in release mode builds
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// (especially with LTCG) are highly suspect. But when troubleshooting crashes that only
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// rear ugly heads in optimized builds, this is one of the few tools we have.
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#define pxAssertRel(cond, msg) ( (likely(cond)) || (pxOnAssert(pxAssertSpot(cond), msg), false) )
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#define pxAssumeRel(cond, msg) ((void) ( (!likely(cond)) && (pxOnAssert(pxAssertSpot(cond), msg), false) ))
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#define pxFailRel(msg) pxAssumeRel(false, msg)
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#if defined(PCSX2_DEBUG)
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# define pxAssertMsg(cond, msg) pxAssertRel(cond, msg)
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# define pxAssertDev(cond, msg) pxAssertMsg(cond, msg)
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# define pxAssumeMsg(cond, msg) pxAssumeRel(cond, msg)
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# define pxAssumeDev(cond, msg) pxAssumeRel(cond, msg)
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# define pxFail(msg) pxAssumeMsg(false, msg)
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# define pxFailDev(msg) pxAssumeDev(false, msg)
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#elif defined(PCSX2_DEVBUILD)
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// Devel builds use __assume for standard assertions and call pxOnAssertDevel
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// for AssertDev brand assertions (which typically throws a LogicError exception).
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# define pxAssertMsg(cond, msg) (likely(cond))
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# define pxAssertDev(cond, msg) pxAssertRel(cond, msg)
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# define pxAssumeMsg(cond, msg) (__assume(cond))
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# define pxAssumeDev(cond, msg) pxAssumeMsg(cond, msg)
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# define pxFail(msg) (__assume(false))
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# define pxFailDev(msg) pxAssumeDev(false, msg)
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#else
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// Release Builds just use __assume as an optimization, and return the conditional
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// as a result (which is optimized to nil if unused).
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# define pxAssertMsg(cond, msg) (likely(cond))
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# define pxAssertDev(cond, msg) (likely(cond))
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# define pxAssumeMsg(cond, msg) (__assume(cond))
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# define pxAssumeDev(cond, msg) (__assume(cond))
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# define pxFail(msg) (__assume(false))
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# define pxFailDev(msg) (__assume(false))
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#endif
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#define pxAssert(cond) pxAssertMsg(cond, wxNullChar)
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#define pxAssume(cond) pxAssumeMsg(cond, wxNullChar)
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#define pxAssertRelease( cond, msg )
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// Performs an unsigned index bounds check, and generates a debug assertion if the check fails.
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// For stricter checking in Devel builds as well as debug builds (but possibly slower), use
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// IndexBoundsCheckDev.
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#define IndexBoundsCheck( objname, idx, sze ) pxAssertMsg( (uint)(idx) < (uint)(sze), \
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wxsFormat( L"Array index out of bounds accessing object '%s' (index=%d, size=%d)", objname, (idx), (sze) ) )
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#define IndexBoundsCheckDev( objname, idx, sze ) pxAssertDev( (uint)(idx) < (uint)(sze), \
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wxsFormat( L"Array index out of bounds accessing object '%s' (index=%d, size=%d)", objname, (idx), (sze) ) )
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extern void pxOnAssert( const DiagnosticOrigin& origin, const wxChar* msg=NULL );
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extern void pxOnAssert( const DiagnosticOrigin& origin, const char* msg );
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//////////////////////////////////////////////////////////////////////////////////////////
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// jNO_DEFAULT -- disables the default case in a switch, which improves switch optimization
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// under MSVC.
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//
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// How it Works: jASSUME turns into an __assume(0) under msvc compilers, which when specified
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// in the 'default:' case of a switch tells the compiler that the case is unreachable, so
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// that it will not generate any code, LUTs, or conditionals to handle it.
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//
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// * In debug/devel builds the default case will cause an assertion.
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//
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#ifndef jNO_DEFAULT
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#if defined(__cplusplus) && defined(PCSX2_DEVBUILD)
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# define jNO_DEFAULT \
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default: \
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{ \
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pxFailDev( "Incorrect usage of jNO_DEFAULT detected (default case is not unreachable!)" ); \
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break; \
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}
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#else
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# define jNO_DEFAULT \
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default: \
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{ \
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jASSUME(0); \
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break; \
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}
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#endif
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#endif
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