xml/expat/lib/internal.h
00001 /* internal.h 00002 00003 Internal definitions used by Expat. This is not needed to compile 00004 client code. 00005 00006 The following calling convention macros are defined for frequently 00007 called functions: 00008 00009 FASTCALL - Used for those internal functions that have a simple 00010 body and a low number of arguments and local variables. 00011 00012 PTRCALL - Used for functions called though function pointers. 00013 00014 PTRFASTCALL - Like PTRCALL, but for low number of arguments. 00015 00016 inline - Used for selected internal functions for which inlining 00017 may improve performance on some platforms. 00018 00019 Note: Use of these macros is based on judgement, not hard rules, 00020 and therefore subject to change. 00021 */ 00022 00023 #if defined(__GNUC__) && defined(__i386__) 00024 /* We'll use this version by default only where we know it helps. 00025 00026 regparm() generates warnings on Solaris boxes. See SF bug #692878. 00027 00028 Instability reported with egcs on a RedHat Linux 7.3. 00029 Let's comment out: 00030 #define FASTCALL __attribute__((stdcall, regparm(3))) 00031 and let's try this: 00032 */ 00033 #define FASTCALL __attribute__((regparm(3))) 00034 #define PTRFASTCALL __attribute__((regparm(3))) 00035 #endif 00036 00037 /* Using __fastcall seems to have an unexpected negative effect under 00038 MS VC++, especially for function pointers, so we won't use it for 00039 now on that platform. It may be reconsidered for a future release 00040 if it can be made more effective. 00041 Likely reason: __fastcall on Windows is like stdcall, therefore 00042 the compiler cannot perform stack optimizations for call clusters. 00043 */ 00044 00045 /* Make sure all of these are defined if they aren't already. */ 00046 00047 #ifndef FASTCALL 00048 #define FASTCALL 00049 #endif 00050 00051 #ifndef PTRCALL 00052 #define PTRCALL 00053 #endif 00054 00055 #ifndef PTRFASTCALL 00056 #define PTRFASTCALL 00057 #endif 00058 00059 #ifndef XML_MIN_SIZE 00060 #if !defined(__cplusplus) && !defined(inline) 00061 #ifdef __GNUC__ 00062 #define inline __inline 00063 #endif /* __GNUC__ */ 00064 #endif 00065 #endif /* XML_MIN_SIZE */ 00066 00067 #ifdef __cplusplus 00068 #define inline inline 00069 #else 00070 #ifndef inline 00071 #define inline 00072 #endif 00073 #endif
