diff options
Diffstat (limited to 'include/my_global.h')
| -rw-r--r-- | include/my_global.h | 134 |
1 files changed, 100 insertions, 34 deletions
diff --git a/include/my_global.h b/include/my_global.h index 5b70ba47b74..1fa3f750b44 100644 --- a/include/my_global.h +++ b/include/my_global.h @@ -94,6 +94,9 @@ #define IF_WIN(A,B) (B) #endif +/* Make it easier to print null strings */ +#define val_or_null(A) ((A) ? (const char*) (A) : "(null)") + #ifndef EMBEDDED_LIBRARY #ifdef WITH_NDB_BINLOG #define HAVE_NDB_BINLOG 1 @@ -160,9 +163,14 @@ #define __builtin_expect(x, expected_value) (x) #endif -#define likely(x) __builtin_expect((x),1) -#define unlikely(x) __builtin_expect((x),0) - +/** + The semantics of builtin_expect() are that + 1) its two arguments are long + 2) it's likely that they are == + Those of our likely(x) are that x can be bool/int/longlong/pointer. +*/ +#define likely(x) __builtin_expect(((x) != 0),1) +#define unlikely(x) __builtin_expect(((x) != 0),0) /* The macros below are useful in optimising places where it has been @@ -414,6 +422,7 @@ C_MODE_END #ifndef stdin #include <stdio.h> #endif +#include <stdarg.h> #ifdef HAVE_STDLIB_H #include <stdlib.h> #endif @@ -438,6 +447,9 @@ C_MODE_END #ifdef HAVE_FCNTL_H #include <fcntl.h> #endif +#ifdef HAVE_SYS_STAT_H +#include <sys/stat.h> +#endif #ifdef HAVE_SYS_TIMEB_H #include <sys/timeb.h> /* Avoid warnings on SCO */ #endif @@ -476,14 +488,13 @@ C_MODE_END #include <assert.h> /* an assert that works at compile-time. only for constant expression */ -#ifndef __GNUC__ +#ifdef _some_old_compiler_that_does_not_understand_the_construct_below_ #define compile_time_assert(X) do { } while(0) #else #define compile_time_assert(X) \ do \ { \ - char compile_time_assert[(X) ? 1 : -1] \ - __attribute__ ((unused)); \ + typedef char compile_time_assert[(X) ? 1 : -1]; \ } while(0) #endif @@ -569,6 +580,14 @@ int __void__; #define LINT_INIT(var) #endif +#ifdef _WIN32 +#define SO_EXT ".dll" +#elif defined(__APPLE__) +#define SO_EXT ".dylib" +#else +#define SO_EXT ".so" +#endif + /* Suppress uninitialized variable warning without generating code. @@ -583,6 +602,8 @@ int __void__; #define UNINIT_VAR(x) x= x #endif +#include <my_valgrind.h> + /* Define some useful general macros */ #if !defined(max) #define max(a, b) ((a) > (b) ? (a) : (b)) @@ -602,6 +623,7 @@ typedef unsigned short ushort; #define test(a) ((a) ? 1 : 0) #define set_if_bigger(a,b) do { if ((a) < (b)) (a)=(b); } while(0) #define set_if_smaller(a,b) do { if ((a) > (b)) (a)=(b); } while(0) +#define set_bits(type, bit_count) (sizeof(type)*8 <= (bit_count) ? ~(type) 0 : ((((type) 1) << (bit_count)) - (type) 1)) #define test_all_bits(a,b) (((a) & (b)) == (b)) #define array_elements(A) ((uint) (sizeof(A)/sizeof(A[0]))) @@ -659,6 +681,7 @@ C_MODE_END # endif #endif +typedef char my_bool; /* Small bool; Needed by my_dbug.h */ #include <my_dbug.h> #define MIN_ARRAY_SIZE 0 /* Zero or One. Gcc allows zero*/ @@ -758,6 +781,7 @@ typedef SOCKET_SIZE_TYPE size_socket; #ifndef FN_LIBCHAR #define FN_LIBCHAR '/' +#define FN_DIRSEP "/" /* Valid directory separators */ #define FN_ROOTDIR "/" #endif #define MY_NFILE 64 /* This is only used to save filenames */ @@ -786,10 +810,10 @@ typedef SOCKET_SIZE_TYPE size_socket; #endif /* get memory in huncs */ #define ONCE_ALLOC_INIT (uint) (4096-MALLOC_OVERHEAD) - /* Typical record cash */ -#define RECORD_CACHE_SIZE (uint) (64*1024-MALLOC_OVERHEAD) - /* Typical key cash */ -#define KEY_CACHE_SIZE (uint) (8*1024*1024-MALLOC_OVERHEAD) + /* Typical record cache */ +#define RECORD_CACHE_SIZE (uint) (128*1024-MALLOC_OVERHEAD) + /* Typical key cache */ +#define KEY_CACHE_SIZE (uint) (128L*1024L*1024L-MALLOC_OVERHEAD) /* Default size of a key cache block */ #define KEY_CACHE_BLOCK_SIZE (uint) 1024 @@ -934,9 +958,10 @@ typedef long long my_ptrdiff_t; #define MY_ALIGN(A,L) (((A) + (L) - 1) & ~((L) - 1)) #define ALIGN_SIZE(A) MY_ALIGN((A),sizeof(double)) +#define ALIGN_MAX_UNIT (sizeof(double)) /* Size to make adressable obj. */ -#define ALIGN_PTR(A, t) ((t*) MY_ALIGN((A),sizeof(t))) - /* Offset of field f in structure t */ +#define ALIGN_PTR(A, t) ((t*) MY_ALIGN((A), sizeof(double))) +/* Offset of field f in structure t */ #define OFFSET(t, f) ((size_t)(char *)&((t *)0)->f) #define ADD_TO_PTR(ptr,size,type) (type) ((uchar*) (ptr)+size) #define PTR_BYTE_DIFF(A,B) (my_ptrdiff_t) ((uchar*) (A) - (uchar*) (B)) @@ -1102,7 +1127,6 @@ typedef off_t os_off_t; typedef uint8 int7; /* Most effective integer 0 <= x <= 127 */ typedef short int15; /* Most effective integer 0 <= x <= 32767 */ typedef int myf; /* Type of MyFlags in my_funcs */ -typedef char my_bool; /* Small bool */ #if !defined(bool) && (!defined(HAVE_BOOL) || !defined(__cplusplus)) typedef char bool; /* Ordinary boolean values 0 1 */ #endif @@ -1169,9 +1193,7 @@ typedef char bool; /* Ordinary boolean values 0 1 */ #define SCALE_SEC 100 #define SCALE_USEC 10000 #define MY_HOW_OFTEN_TO_ALARM 2 /* How often we want info on screen */ -#define MY_HOW_OFTEN_TO_WRITE 1000 /* How often we want info on screen */ - - +#define MY_HOW_OFTEN_TO_WRITE 10000 /* How often we want info on screen */ /* Define-funktions for reading and storing in machine independent format @@ -1180,7 +1202,7 @@ typedef char bool; /* Ordinary boolean values 0 1 */ /* Optimized store functions for Intel x86 */ #if defined(__i386__) || defined(_WIN32) -#define sint2korr(A) (*((int16 *) (A))) +#define sint2korr(A) (*((const int16 *) (A))) #define sint3korr(A) ((int32) ((((uchar) (A)[2]) & 128) ? \ (((uint32) 255L << 24) | \ (((uint32) (uchar) (A)[2]) << 16) |\ @@ -1189,9 +1211,9 @@ typedef char bool; /* Ordinary boolean values 0 1 */ (((uint32) (uchar) (A)[2]) << 16) |\ (((uint32) (uchar) (A)[1]) << 8) | \ ((uint32) (uchar) (A)[0]))) -#define sint4korr(A) (*((long *) (A))) -#define uint2korr(A) (*((uint16 *) (A))) -#if defined(HAVE_purify) && !defined(_WIN32) +#define sint4korr(A) (*((const long *) (A))) +#define uint2korr(A) (*((const uint16 *) (A))) +#if defined(HAVE_valgrind) && !defined(_WIN32) #define uint3korr(A) (uint32) (((uint32) ((uchar) (A)[0])) +\ (((uint32) ((uchar) (A)[1])) << 8) +\ (((uint32) ((uchar) (A)[2])) << 16)) @@ -1202,9 +1224,9 @@ typedef char bool; /* Ordinary boolean values 0 1 */ Please, note, uint3korr reads 4 bytes (not 3) ! It means, that you have to provide enough allocated space ! */ -#define uint3korr(A) (long) (*((unsigned int *) (A)) & 0xFFFFFF) -#endif /* HAVE_purify && !_WIN32 */ -#define uint4korr(A) (*((uint32 *) (A))) +#define uint3korr(A) (long) (*((const unsigned int *) (A)) & 0xFFFFFF) +#endif /* HAVE_valgrind && !_WIN32 */ +#define uint4korr(A) (*((const uint32 *) (A))) #define uint5korr(A) ((ulonglong)(((uint32) ((uchar) (A)[0])) +\ (((uint32) ((uchar) (A)[1])) << 8) +\ (((uint32) ((uchar) (A)[2])) << 16) +\ @@ -1216,8 +1238,8 @@ typedef char bool; /* Ordinary boolean values 0 1 */ (((uint32) ((uchar) (A)[3])) << 24)) + \ (((ulonglong) ((uchar) (A)[4])) << 32) + \ (((ulonglong) ((uchar) (A)[5])) << 40)) -#define uint8korr(A) (*((ulonglong *) (A))) -#define sint8korr(A) (*((longlong *) (A))) +#define uint8korr(A) (*((const ulonglong *) (A))) +#define sint8korr(A) (*((const longlong *) (A))) #define int2store(T,A) *((uint16*) (T))= (uint16) (A) #define int3store(T,A) do { *(T)= (uchar) ((A));\ *(T+1)=(uchar) (((uint) (A) >> 8));\ @@ -1242,13 +1264,13 @@ typedef union { } doubleget_union; #define doubleget(V,M) \ do { doubleget_union _tmp; \ - _tmp.m[0] = *((long*)(M)); \ - _tmp.m[1] = *(((long*) (M))+1); \ + _tmp.m[0] = *((const long*)(M)); \ + _tmp.m[1] = *(((const long*) (M))+1); \ (V) = _tmp.v; } while(0) -#define doublestore(T,V) do { *((long *) T) = ((doubleget_union *)&V)->m[0]; \ - *(((long *) T)+1) = ((doubleget_union *)&V)->m[1]; \ +#define doublestore(T,V) do { *((long *) T) = ((const doubleget_union *)&V)->m[0]; \ + *(((long *) T)+1) = ((const doubleget_union *)&V)->m[1]; \ } while (0) -#define float4get(V,M) do { *((float *) &(V)) = *((float*) (M)); } while(0) +#define float4get(V,M) do { *((float *) &(V)) = *((const float*) (M)); } while(0) #define float8get(V,M) doubleget((V),(M)) #define float4store(V,M) memcpy((uchar*) V,(uchar*) (&M),sizeof(float)) #define floatstore(T,V) memcpy((uchar*)(T), (uchar*)(&V),sizeof(float)) @@ -1464,6 +1486,17 @@ do { doubleget_union _tmp; \ #endif /* WORDS_BIGENDIAN */ +/* sprintf does not always return the number of bytes :- */ +#ifdef SPRINTF_RETURNS_INT +#define my_sprintf(buff,args) sprintf args +#else +#ifdef SPRINTF_RETURNS_PTR +#define my_sprintf(buff,args) ((int)(sprintf args - buff)) +#else +#define my_sprintf(buff,args) ((ulong) sprintf args, (ulong) strlen(buff)) +#endif +#endif + #ifndef THREAD #define thread_safe_increment(V,L) (V)++ #define thread_safe_decrement(V,L) (V)-- @@ -1493,6 +1526,9 @@ do { doubleget_union _tmp; \ #elif defined(HAVE_DLFCN_H) #include <dlfcn.h> #endif +#ifndef HAVE_DLERROR +#define dlerror() "" +#endif #endif /* FreeBSD 2.2.2 does not define RTLD_NOW) */ @@ -1500,11 +1536,13 @@ do { doubleget_union _tmp; \ #define RTLD_NOW 1 #endif -#ifndef HAVE_DLERROR -#define dlerror() "" +#ifndef HAVE_DLOPEN +#define dlerror() "No support for dynamic loading (static build?)" +#define dlopen(A,B) 0 +#define dlsym(A,B) 0 +#define dlclose(A) 0 #endif - #ifndef __NETWARE__ /* * Include standard definitions of operator new and delete. @@ -1535,13 +1573,22 @@ inline void operator delete[](void*, void*) { /* Do nothing */ } #if !defined(max) #define max(a, b) ((a) > (b) ? (a) : (b)) #define min(a, b) ((a) < (b) ? (a) : (b)) -#endif +#endif /* Only Linux is known to need an explicit sync of the directory to make sure a file creation/deletion/renaming in(from,to) this directory durable. */ #ifdef TARGET_OS_LINUX #define NEED_EXPLICIT_SYNC_DIR 1 +#else +/* + On linux default rwlock scheduling policy is good enough for + waiting_threads.c, on other systems use our special implementation + (which is slower). + + QQ perhaps this should be tested in configure ? how ? +*/ +#define WT_RWLOCKS_USE_MUTEXES 1 #endif #if !defined(__cplusplus) && !defined(bool) @@ -1596,4 +1643,23 @@ static inline double rint(double x) #endif #endif +/* Provide __func__ macro definition for platforms that miss it. */ +#if __STDC_VERSION__ < 199901L +# if __GNUC__ >= 2 +# define __func__ __FUNCTION__ +# else +# define __func__ "<unknown>" +# endif +#elif defined(_MSC_VER) +# if _MSC_VER < 1300 +# define __func__ "<unknown>" +# else +# define __func__ __FUNCTION__ +# endif +#elif defined(__BORLANDC__) +# define __func__ __FUNC__ +#else +# define __func__ "<unknown>" +#endif + #endif /* my_global_h */ |