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Diffstat (limited to 'include/myisampack.h')
| -rw-r--r-- | include/myisampack.h | 256 |
1 files changed, 256 insertions, 0 deletions
diff --git a/include/myisampack.h b/include/myisampack.h new file mode 100644 index 00000000..f3c5fe71 --- /dev/null +++ b/include/myisampack.h @@ -0,0 +1,256 @@ +#ifndef MYISAMPACK_INCLUDED +#define MYISAMPACK_INCLUDED + +/* Copyright (c) 2000-2002, 2004 MySQL AB, 2009 Sun Microsystems, Inc. + Copyright (c) 2020, MariaDB Corporation. + Use is subject to license terms. + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; version 2 of the License. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335 USA */ + +/* + Storing of values in high byte first order. + + integer keys and file pointers are stored with high byte first to get + better compression +*/ + +/* these two are for uniformity */ +#define mi_sint1korr(A) ((int8)(*A)) +#define mi_uint1korr(A) ((uint8)(*A)) + +#define mi_sint2korr(A) ((int16) (((int16) (((const uchar*) (A))[1])) |\ + ((int16) ((uint16) ((const uchar*) (A))[0]) << 8))) +#define mi_sint3korr(A) ((int32) (((((const uchar*) (A))[0]) & 128) ? \ + (((uint32) 255L << 24) | \ + (((uint32) ((const uchar*) (A))[0]) << 16) |\ + (((uint32) ((const uchar*) (A))[1]) << 8) | \ + ((uint32) ((const uchar*) (A))[2])) : \ + (((uint32) ((const uchar*) (A))[0]) << 16) |\ + (((uint32) ((const uchar*) (A))[1]) << 8) | \ + ((uint32) ((const uchar*) (A))[2]))) +#define mi_sint4korr(A) ((int32) (((uint32) (((const uchar*) (A))[3])) |\ + ((uint32) (((const uchar*) (A))[2]) << 8) |\ + ((uint32) (((const uchar*) (A))[1]) << 16) |\ + ((uint32) (((const uchar*) (A))[0]) << 24))) +#define mi_sint8korr(A) ((longlong) mi_uint8korr(A)) +#define mi_uint2korr(A) ((uint16) (((uint16) (((const uchar*) (A))[1])) |\ + ((uint16) (((const uchar*) (A))[0]) << 8))) +#define mi_uint3korr(A) ((uint32) (((uint32) (((const uchar*) (A))[2])) |\ + (((uint32) (((const uchar*) (A))[1])) << 8) |\ + (((uint32) (((const uchar*) (A))[0])) << 16))) +#define mi_uint4korr(A) ((uint32) (((uint32) (((const uchar*) (A))[3])) |\ + (((uint32) (((const uchar*) (A))[2])) << 8) |\ + (((uint32) (((const uchar*) (A))[1])) << 16) |\ + (((uint32) (((const uchar*) (A))[0])) << 24))) + +#ifndef HAVE_mi_uint5korr +#define mi_uint5korr(A) ((ulonglong)(((uint32) (((const uchar*) (A))[4])) |\ + (((uint32) (((const uchar*) (A))[3])) << 8) |\ + (((uint32) (((const uchar*) (A))[2])) << 16) |\ + (((uint32) (((const uchar*) (A))[1])) << 24)) |\ + (((ulonglong) (((const uchar*) (A))[0])) << 32)) +#endif /* HAVE_mi_uint5korr */ + +#ifndef HAVE_mi_uint6korr +#define mi_uint6korr(A) ((ulonglong)(((uint32) (((const uchar*) (A))[5])) |\ + (((uint32) (((const uchar*) (A))[4])) << 8) |\ + (((uint32) (((const uchar*) (A))[3])) << 16) |\ + (((uint32) (((const uchar*) (A))[2])) << 24)) |\ + (((ulonglong) (((uint32) (((const uchar*) (A))[1])) |\ + (((uint32) (((const uchar*) (A))[0]) << 8)))) <<\ + 32)) +#endif /* HAVE_mi_uint6korr */ + +#ifndef HAVE_mi_uint7korr +#define mi_uint7korr(A) ((ulonglong)(((uint32) (((const uchar*) (A))[6])) |\ + (((uint32) (((const uchar*) (A))[5])) << 8) |\ + (((uint32) (((const uchar*) (A))[4])) << 16) |\ + (((uint32) (((const uchar*) (A))[3])) << 24)) |\ + (((ulonglong) (((uint32) (((const uchar*) (A))[2])) |\ + (((uint32) (((const uchar*) (A))[1])) << 8) |\ + (((uint32) (((const uchar*) (A))[0])) << 16))) <<\ + 32)) +#endif /* HAVE_mi_uint7korr */ + +#ifndef HAVE_mi_uint8korr +#define mi_uint8korr(A) ((ulonglong)(((uint32) (((const uchar*) (A))[7])) |\ + (((uint32) (((const uchar*) (A))[6])) << 8) |\ + (((uint32) (((const uchar*) (A))[5])) << 16) |\ + (((uint32) (((const uchar*) (A))[4])) << 24)) |\ + (((ulonglong) (((uint32) (((const uchar*) (A))[3])) |\ + (((uint32) (((const uchar*) (A))[2])) << 8) |\ + (((uint32) (((const uchar*) (A))[1])) << 16) |\ + (((uint32) (((const uchar*) (A))[0])) << 24))) <<\ + 32)) +#endif /* HAVE_mi_uint8korr */ + +/* This one is for uniformity */ +#define mi_int1store(T,A) *((uchar*)(T))= (uchar) (A) + +#define mi_int2store(T,A) { uint def_temp= (uint) (A) ;\ + ((uchar*) (T))[1]= (uchar) (def_temp);\ + ((uchar*) (T))[0]= (uchar) (def_temp >> 8); } +#define mi_int3store(T,A) { /*lint -save -e734 */\ + ulong def_temp= (ulong) (A);\ + ((uchar*) (T))[2]= (uchar) (def_temp);\ + ((uchar*) (T))[1]= (uchar) (def_temp >> 8);\ + ((uchar*) (T))[0]= (uchar) (def_temp >> 16);\ + /*lint -restore */} +#define mi_int4store(T,A) { ulong def_temp= (ulong) (A);\ + ((uchar*) (T))[3]= (uchar) (def_temp);\ + ((uchar*) (T))[2]= (uchar) (def_temp >> 8);\ + ((uchar*) (T))[1]= (uchar) (def_temp >> 16);\ + ((uchar*) (T))[0]= (uchar) (def_temp >> 24); } +#define mi_int5store(T,A) { ulong def_temp= (ulong) (A),\ + def_temp2= (ulong) ((A) >> 32);\ + ((uchar*) (T))[4]= (uchar) (def_temp);\ + ((uchar*) (T))[3]= (uchar) (def_temp >> 8);\ + ((uchar*) (T))[2]= (uchar) (def_temp >> 16);\ + ((uchar*) (T))[1]= (uchar) (def_temp >> 24);\ + ((uchar*) (T))[0]= (uchar) (def_temp2); } +#define mi_int6store(T,A) { ulong def_temp= (ulong) (A),\ + def_temp2= (ulong) ((A) >> 32);\ + ((uchar*) (T))[5]= (uchar) (def_temp);\ + ((uchar*) (T))[4]= (uchar) (def_temp >> 8);\ + ((uchar*) (T))[3]= (uchar) (def_temp >> 16);\ + ((uchar*) (T))[2]= (uchar) (def_temp >> 24);\ + ((uchar*) (T))[1]= (uchar) (def_temp2);\ + ((uchar*) (T))[0]= (uchar) (def_temp2 >> 8); } +#define mi_int7store(T,A) { ulong def_temp= (ulong) (A),\ + def_temp2= (ulong) ((A) >> 32);\ + ((uchar*) (T))[6]= (uchar) (def_temp);\ + ((uchar*) (T))[5]= (uchar) (def_temp >> 8);\ + ((uchar*) (T))[4]= (uchar) (def_temp >> 16);\ + ((uchar*) (T))[3]= (uchar) (def_temp >> 24);\ + ((uchar*) (T))[2]= (uchar) (def_temp2);\ + ((uchar*) (T))[1]= (uchar) (def_temp2 >> 8);\ + ((uchar*) (T))[0]= (uchar) (def_temp2 >> 16); } +#define mi_int8store(T,A) { ulong def_temp3= (ulong) (A),\ + def_temp4= (ulong) ((A) >> 32);\ + mi_int4store((uchar*) (T) + 0, def_temp4);\ + mi_int4store((uchar*) (T) + 4, def_temp3); } + +#ifdef WORDS_BIGENDIAN + +#define mi_float4store(T,A) { ((uchar*) (T))[0]= ((uchar*) &A)[0];\ + ((uchar*) (T))[1]= ((uchar*) &A)[1];\ + ((uchar*) (T))[2]= ((uchar*) &A)[2];\ + ((uchar*) (T))[3]= ((uchar*) &A)[3]; } + +#define mi_float4get(V,M) { float def_temp;\ + ((uchar*) &def_temp)[0]= ((const uchar*) (M))[0];\ + ((uchar*) &def_temp)[1]= ((const uchar*) (M))[1]; \ + ((uchar*) &def_temp)[2]= ((const uchar*) (M))[2];\ + ((uchar*) &def_temp)[3]= ((const uchar*) (M))[3];\ + (V)= def_temp; } + +#define mi_float8store(T,V) { ((uchar*) (T))[0]= ((const uchar*) &V)[0];\ + ((uchar*) (T))[1]= ((const uchar*) &V)[1];\ + ((uchar*) (T))[2]= ((const uchar*) &V)[2];\ + ((uchar*) (T))[3]= ((const uchar*) &V)[3];\ + ((uchar*) (T))[4]= ((const uchar*) &V)[4];\ + ((uchar*) (T))[5]= ((const uchar*) &V)[5];\ + ((uchar*) (T))[6]= ((const uchar*) &V)[6];\ + ((uchar*) (T))[7]= ((const uchar*) &V)[7]; } + +#define mi_float8get(V,M) { double def_temp;\ + ((uchar*) &def_temp)[0]= ((const uchar*) (M))[0];\ + ((uchar*) &def_temp)[1]= ((const uchar*) (M))[1];\ + ((uchar*) &def_temp)[2]= ((const uchar*) (M))[2];\ + ((uchar*) &def_temp)[3]= ((const uchar*) (M))[3];\ + ((uchar*) &def_temp)[4]= ((const uchar*) (M))[4];\ + ((uchar*) &def_temp)[5]= ((const uchar*) (M))[5];\ + ((uchar*) &def_temp)[6]= ((const uchar*) (M))[6];\ + ((uchar*) &def_temp)[7]= ((const uchar*) (M))[7]; \ + (V)= def_temp; } +#else + +#define mi_float4store(T,A) { ((uchar*) (T))[0]= ((const uchar*) &A)[3];\ + ((uchar*) (T))[1]= ((const uchar*) &A)[2];\ + ((uchar*) (T))[2]= ((const uchar*) &A)[1];\ + ((uchar*) (T))[3]= ((const uchar*) &A)[0]; } + +#define mi_float4get(V,M) { float def_temp;\ + ((uchar*) &def_temp)[0]= ((const uchar*) (M))[3];\ + ((uchar*) &def_temp)[1]= ((const uchar*) (M))[2];\ + ((uchar*) &def_temp)[2]= ((const uchar*) (M))[1];\ + ((uchar*) &def_temp)[3]= ((const uchar*) (M))[0];\ + (V)= def_temp; } + +#if defined(__FLOAT_WORD_ORDER) && (__FLOAT_WORD_ORDER == __BIG_ENDIAN) +#define mi_float8store(T,V) { ((uchar*) (T))[0]= ((const uchar*) &V)[3];\ + ((uchar*) (T))[1]= ((const uchar*) &V)[2];\ + ((uchar*) (T))[2]= ((const uchar*) &V)[1];\ + ((uchar*) (T))[3]= ((const uchar*) &V)[0];\ + ((uchar*) (T))[4]= ((const uchar*) &V)[7];\ + ((uchar*) (T))[5]= ((const uchar*) &V)[6];\ + ((uchar*) (T))[6]= ((const uchar*) &V)[5];\ + ((uchar*) (T))[7]= ((const uchar*) &V)[4];} + +#define mi_float8get(V,M) { double def_temp;\ + ((uchar*) &def_temp)[0]= ((const uchar*) (M))[3];\ + ((uchar*) &def_temp)[1]= ((const uchar*) (M))[2];\ + ((uchar*) &def_temp)[2]= ((const uchar*) (M))[1];\ + ((uchar*) &def_temp)[3]= ((const uchar*) (M))[0];\ + ((uchar*) &def_temp)[4]= ((const uchar*) (M))[7];\ + ((uchar*) &def_temp)[5]= ((const uchar*) (M))[6];\ + ((uchar*) &def_temp)[6]= ((const uchar*) (M))[5];\ + ((uchar*) &def_temp)[7]= ((const uchar*) (M))[4];\ + (V)= def_temp; } + +#else +#define mi_float8store(T,V) { ((uchar*) (T))[0]= ((const uchar*) &V)[7];\ + ((uchar*) (T))[1]= ((const uchar*) &V)[6];\ + ((uchar*) (T))[2]= ((const uchar*) &V)[5];\ + ((uchar*) (T))[3]= ((const uchar*) &V)[4];\ + ((uchar*) (T))[4]= ((const uchar*) &V)[3];\ + ((uchar*) (T))[5]= ((const uchar*) &V)[2];\ + ((uchar*) (T))[6]= ((const uchar*) &V)[1];\ + ((uchar*) (T))[7]= ((const uchar*) &V)[0];} + +#define mi_float8get(V,M) { double def_temp;\ + ((uchar*) &def_temp)[0]= ((const uchar*) (M))[7];\ + ((uchar*) &def_temp)[1]= ((const uchar*) (M))[6];\ + ((uchar*) &def_temp)[2]= ((const uchar*) (M))[5];\ + ((uchar*) &def_temp)[3]= ((const uchar*) (M))[4];\ + ((uchar*) &def_temp)[4]= ((const uchar*) (M))[3];\ + ((uchar*) &def_temp)[5]= ((const uchar*) (M))[2];\ + ((uchar*) &def_temp)[6]= ((const uchar*) (M))[1];\ + ((uchar*) &def_temp)[7]= ((const uchar*) (M))[0];\ + (V)= def_temp; } +#endif /* __FLOAT_WORD_ORDER */ +#endif /* WORDS_BIGENDIAN */ + +/* Fix to avoid warnings when sizeof(ha_rows) == sizeof(long) */ + +#ifdef BIG_TABLES +#define mi_rowstore(T,A) mi_int8store(T, A) +#define mi_rowkorr(T) mi_uint8korr(T) +#else +#define mi_rowstore(T,A) { mi_int4store(T, 0);\ + mi_int4store(((uchar*) (T) + 4), A); } +#define mi_rowkorr(T) mi_uint4korr((const uchar*) (T) + 4) +#endif + +#if SIZEOF_OFF_T > 4 +#define mi_sizestore(T,A) mi_int8store(T, A) +#define mi_sizekorr(T) mi_uint8korr(T) +#else +#define mi_sizestore(T,A) { if ((A) == HA_OFFSET_ERROR)\ + bfill((char*) (T), 8, 255);\ + else { mi_int4store((T), 0);\ + mi_int4store(((T) + 4), A); }} +#define mi_sizekorr(T) mi_uint4korr((const uchar*) (T) + 4) +#endif +#endif /* MYISAMPACK_INCLUDED */ |