1 /*
2 Copyright (c) 2001, 2016, Oracle and/or its affiliates. All rights reserved.
3
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License, version 2.0,
6 as published by the Free Software Foundation.
7
8 This program is also distributed with certain software (including
9 but not limited to OpenSSL) that is licensed under separate terms,
10 as designated in a particular file or component or in included license
11 documentation. The authors of MySQL hereby grant you an additional
12 permission to link the program and your derivative works with the
13 separately licensed software that they have included with MySQL.
14
15 Without limiting anything contained in the foregoing, this file,
16 which is part of C Driver for MySQL (Connector/C), is also subject to the
17 Universal FOSS Exception, version 1.0, a copy of which can be found at
18 http://oss.oracle.com/licenses/universal-foss-exception.
19
20 This program is distributed in the hope that it will be useful,
21 but WITHOUT ANY WARRANTY; without even the implied warranty of
22 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23 GNU General Public License, version 2.0, for more details.
24
25 You should have received a copy of the GNU General Public License
26 along with this program; if not, write to the Free Software
27 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
28
29 #ifndef MY_GLOBAL_INCLUDED
30 #define MY_GLOBAL_INCLUDED
31
32 /* This is the include file that should be included 'first' in every C file. */
33
34 /* Client library users on Windows need this macro defined here. */
35 #if !defined(__WIN__) && defined(_WIN32)
36 #define __WIN__
37 #endif
38
39 /*
40 InnoDB depends on some MySQL internals which other plugins should not
41 need. This is because of InnoDB's foreign key support, "safe" binlog
42 truncation, and other similar legacy features.
43
44 We define accessors for these internals unconditionally, but do not
45 expose them in mysql/plugin.h. They are declared in ha_innodb.h for
46 InnoDB's use.
47 */
48 #define INNODB_COMPATIBILITY_HOOKS
49
50 #ifdef __CYGWIN__
51 /* We use a Unix API, so pretend it's not Windows */
52 #undef WIN
53 #undef WIN32
54 #undef _WIN
55 #undef _WIN32
56 #undef _WIN64
57 #undef __WIN__
58 #undef __WIN32__
59 #define HAVE_ERRNO_AS_DEFINE
60 #endif /* __CYGWIN__ */
61
62 #if defined(i386) && !defined(__i386__)
63 #define __i386__
64 #endif
65
66 /* Macros to make switching between C and C++ mode easier */
67 #ifdef __cplusplus
68 #define C_MODE_START extern "C" {
69 #define C_MODE_END }
70 #else
71 #define C_MODE_START
72 #define C_MODE_END
73 #endif
74
75 #ifdef __cplusplus
76 #define CPP_UNNAMED_NS_START namespace {
77 #define CPP_UNNAMED_NS_END }
78 #endif
79
80 #include <my_config.h>
81
82 #ifdef WITH_PERFSCHEMA_STORAGE_ENGINE
83 #define HAVE_PSI_INTERFACE
84 #endif /* WITH_PERFSCHEMA_STORAGE_ENGINE */
85
86 /* Make it easier to add conditional code in _expressions_ */
87 #ifdef __WIN__
88 #define IF_WIN(A,B) A
89 #else
90 #define IF_WIN(A,B) B
91 #endif
92
93 #ifdef HAVE_purify
94 #define IF_PURIFY(A,B) A
95 #else
96 #define IF_PURIFY(A,B) B
97 #endif
98
99 #ifndef EMBEDDED_LIBRARY
100 #ifdef WITH_NDB_BINLOG
101 #define HAVE_NDB_BINLOG 1
102 #endif
103 #endif /* !EMBEDDED_LIBRARY */
104
105 #ifndef EMBEDDED_LIBRARY
106 #define HAVE_REPLICATION
107 #define HAVE_EXTERNAL_CLIENT
108 #endif
109
110 #if defined (_WIN32)
111 /*
112 off_t is 32 bit long. We do not use C runtime functions
113 with off_t but native Win32 file IO APIs, that work with
114 64 bit offsets.
115 */
116 #undef SIZEOF_OFF_T
117 #define SIZEOF_OFF_T 8
118
119 /*
120 Prevent inclusion of Windows GDI headers - they define symbol
121 ERROR that conflicts with mysql headers.
122 */
123 #ifndef NOGDI
124 #define NOGDI
125 #endif
126
127 /* Include common headers.*/
128 #include <winsock2.h>
129 #include <ws2tcpip.h> /* SOCKET */
130 #include <io.h> /* access(), chmod() */
131 #include <process.h> /* getpid() */
132
133 #define sleep(a) Sleep((a)*1000)
134
135 /* Define missing access() modes. */
136 #define F_OK 0
137 #define W_OK 2
138 #define R_OK 4 /* Test for read permission. */
139
140 /* Define missing file locking constants. */
141 #define F_RDLCK 1
142 #define F_WRLCK 2
143 #define F_UNLCK 3
144 #define F_TO_EOF 0x3FFFFFFF
145
146 /* Shared memory and named pipe connections are supported. */
147 #define HAVE_SMEM 1
148 #define HAVE_NAMED_PIPE 1
149 #define shared_memory_buffer_length 16000
150 #define default_shared_memory_base_name "MYSQL"
151 #endif /* _WIN32*/
152
153
154 /* Workaround for _LARGE_FILES and _LARGE_FILE_API incompatibility on AIX */
155 #if defined(_AIX) && defined(_LARGE_FILE_API)
156 #undef _LARGE_FILE_API
157 #endif
158
159 /*
160 The macros below are used to allow build of Universal/fat binaries of
161 MySQL and MySQL applications under darwin.
162 */
163 #if defined(__APPLE__) && defined(__MACH__)
164 # undef SIZEOF_CHARP
165 # undef SIZEOF_SHORT
166 # undef SIZEOF_INT
167 # undef SIZEOF_LONG
168 # undef SIZEOF_LONG_LONG
169 # undef SIZEOF_OFF_T
170 # undef WORDS_BIGENDIAN
171 # define SIZEOF_SHORT 2
172 # define SIZEOF_INT 4
173 # define SIZEOF_LONG_LONG 8
174 # define SIZEOF_OFF_T 8
175 # if defined(__i386__) || defined(__ppc__)
176 # define SIZEOF_CHARP 4
177 # define SIZEOF_LONG 4
178 # elif defined(__x86_64__) || defined(__ppc64__)
179 # define SIZEOF_CHARP 8
180 # define SIZEOF_LONG 8
181 # else
182 # error Building FAT binary for an unknown architecture.
183 # endif
184 # if defined(__ppc__) || defined(__ppc64__)
185 # define WORDS_BIGENDIAN
186 # endif
187 #endif /* defined(__APPLE__) && defined(__MACH__) */
188
189
190 /*
191 The macros below are borrowed from include/linux/compiler.h in the
192 Linux kernel. Use them to indicate the likelyhood of the truthfulness
193 of a condition. This serves two purposes - newer versions of gcc will be
194 able to optimize for branch predication, which could yield siginficant
195 performance gains in frequently executed sections of the code, and the
196 other reason to use them is for documentation
197 */
198
199 #if !defined(__builtin_expect)
200 #define __builtin_expect(x, expected_value) (x)
201 #endif
202
203 #define likely(x) __builtin_expect((x),1)
204 #define unlikely(x) __builtin_expect((x),0)
205
206 /* Fix problem with S_ISLNK() on Linux */
207 #if defined(TARGET_OS_LINUX) || defined(__GLIBC__)
208 #undef _GNU_SOURCE
209 #define _GNU_SOURCE 1
210 #endif
211
212 /*
213 Temporary solution to solve bug#7156. Include "sys/types.h" before
214 the thread headers, else the function madvise() will not be defined
215 */
216 #if defined(HAVE_SYS_TYPES_H) && ( defined(sun) || defined(__sun) )
217 #include <sys/types.h>
218 #endif
219
220 #ifdef HAVE_THREADS_WITHOUT_SOCKETS
221 /* MIT pthreads does not work with unix sockets */
222 #undef HAVE_SYS_UN_H
223 #endif
224
225 #define __EXTENSIONS__ 1 /* We want some extension */
226 #ifndef __STDC_EXT__
227 #define __STDC_EXT__ 1 /* To get large file support on hpux */
228 #endif
229
230 /*
231 Solaris 9 include file <sys/feature_tests.h> refers to X/Open document
232
233 System Interfaces and Headers, Issue 5
234
235 saying we should define _XOPEN_SOURCE=500 to get POSIX.1c prototypes,
236 but apparently other systems (namely FreeBSD) don't agree.
237
238 On a newer Solaris 10, the above file recognizes also _XOPEN_SOURCE=600.
239 Furthermore, it tests that if a program requires older standard
240 (_XOPEN_SOURCE<600 or _POSIX_C_SOURCE<200112L) it cannot be
241 run on a new compiler (that defines _STDC_C99) and issues an #error.
242 It's also an #error if a program requires new standard (_XOPEN_SOURCE=600
243 or _POSIX_C_SOURCE=200112L) and a compiler does not define _STDC_C99.
244
245 To add more to this mess, Sun Studio C compiler defines _STDC_C99 while
246 C++ compiler does not!
247
248 So, in a desperate attempt to get correct prototypes for both
249 C and C++ code, we define either _XOPEN_SOURCE=600 or _XOPEN_SOURCE=500
250 depending on the compiler's announced C standard support.
251
252 Cleaner solutions are welcome.
253 */
254 #ifdef __sun
255 #if __STDC_VERSION__ - 0 >= 199901L
256 #define _XOPEN_SOURCE 600
257 #else
258 #define _XOPEN_SOURCE 500
259 #endif
260 #endif
261
262 #if !defined(__WIN__)
263 #ifndef _POSIX_PTHREAD_SEMANTICS
264 #define _POSIX_PTHREAD_SEMANTICS /* We want posix threads */
265 #endif
266
267 #if !defined(SCO)
268 #define _REENTRANT 1 /* Some thread libraries require this */
269 #endif
270 #if !defined(_THREAD_SAFE) && !defined(_AIX)
271 #define _THREAD_SAFE /* Required for OSF1 */
272 #endif
273 #if defined(HPUX10) || defined(HPUX11)
274 C_MODE_START /* HPUX needs this, signal.h bug */
275 #include <pthread.h>
276 C_MODE_END
277 #else
278 #include <pthread.h> /* AIX must have this included first */
279 #endif
280 #if !defined(SCO) && !defined(_REENTRANT)
281 #define _REENTRANT 1 /* Threads requires reentrant code */
282 #endif
283 #endif /* !defined(__WIN__) */
284
285 /* Go around some bugs in different OS and compilers */
286 #ifdef _AIX /* By soren@t.dk */
287 #define _H_STRINGS
288 #define _SYS_STREAM_H
289 /* #define _AIX32_CURSES */ /* XXX: this breaks AIX 4.3.3 (others?). */
290 #define ulonglong2double(A) my_ulonglong2double(A)
291 #define my_off_t2double(A) my_ulonglong2double(A)
292 C_MODE_START
my_ulonglong2double(unsigned long long A)293 inline double my_ulonglong2double(unsigned long long A) { return (double A); }
294 C_MODE_END
295 #endif /* _AIX */
296
297 #ifdef HAVE_BROKEN_SNPRINTF /* HPUX 10.20 don't have this defined */
298 #undef HAVE_SNPRINTF
299 #endif
300 #ifdef HAVE_BROKEN_PREAD
301 /*
302 pread()/pwrite() are not 64 bit safe on HP-UX 11.0 without
303 installing the kernel patch PHKL_20349 or greater
304 */
305 #undef HAVE_PREAD
306 #undef HAVE_PWRITE
307 #endif
308
309 #ifdef UNDEF_HAVE_INITGROUPS /* For AIX 4.3 */
310 #undef HAVE_INITGROUPS
311 #endif
312
313 #if defined(_lint) && !defined(lint)
314 #define lint
315 #endif
316 #if SIZEOF_LONG_LONG > 4 && !defined(_LONG_LONG)
317 #define _LONG_LONG 1 /* For AIX string library */
318 #endif
319
320 #ifndef stdin
321 #include <stdio.h>
322 #endif
323 #include <stdarg.h>
324 #ifdef HAVE_STDLIB_H
325 #include <stdlib.h>
326 #endif
327 #ifdef HAVE_STDDEF_H
328 #include <stddef.h>
329 #endif
330
331 #include <math.h>
332 #ifdef HAVE_LIMITS_H
333 #include <limits.h>
334 #endif
335 #ifdef HAVE_FLOAT_H
336 #include <float.h>
337 #endif
338 #ifdef HAVE_FENV_H
339 #include <fenv.h> /* For fesetround() */
340 #endif
341
342 #ifdef HAVE_SYS_TYPES_H
343 #include <sys/types.h>
344 #endif
345 #ifdef HAVE_FCNTL_H
346 #include <fcntl.h>
347 #endif
348 #if TIME_WITH_SYS_TIME
349 # include <sys/time.h>
350 # include <time.h>
351 #else
352 # if HAVE_SYS_TIME_H
353 # include <sys/time.h>
354 # else
355 # include <time.h>
356 # endif
357 #endif /* TIME_WITH_SYS_TIME */
358 #ifdef HAVE_UNISTD_H
359 #include <unistd.h>
360 #endif
361 #if defined(__cplusplus) && defined(NO_CPLUSPLUS_ALLOCA)
362 #undef HAVE_ALLOCA
363 #undef HAVE_ALLOCA_H
364 #endif
365 #ifdef HAVE_ALLOCA_H
366 #include <alloca.h>
367 #endif
368
369 #include <errno.h> /* Recommended by debian */
370 /* We need the following to go around a problem with openssl on solaris */
371 #if defined(HAVE_CRYPT_H)
372 #include <crypt.h>
373 #endif
374
375 /*
376 A lot of our programs uses asserts, so better to always include it
377 This also fixes a problem when people uses DBUG_ASSERT without including
378 assert.h
379 */
380 #include <assert.h>
381
382 /* an assert that works at compile-time. only for constant expression */
383 #ifdef _some_old_compiler_that_does_not_understand_the_construct_below_
384 #define compile_time_assert(X) do { } while(0)
385 #else
386 #define compile_time_assert(X) \
387 do \
388 { \
389 typedef char compile_time_assert[(X) ? 1 : -1] MY_ATTRIBUTE((unused)); \
390 } while(0)
391 #endif
392
393 /* Go around some bugs in different OS and compilers */
394 #if defined (HPUX11) && defined(_LARGEFILE_SOURCE)
395 #ifndef _LARGEFILE64_SOURCE
396 #define _LARGEFILE64_SOURCE
397 #endif
398 #endif
399
400 #if defined(_HPUX_SOURCE) && defined(HAVE_SYS_STREAM_H)
401 #include <sys/stream.h> /* HPUX 10.20 defines ulong here. UGLY !!! */
402 #define HAVE_ULONG
403 #endif
404 #if defined(HPUX10) && defined(_LARGEFILE64_SOURCE)
405 /* Fix bug in setrlimit */
406 #undef setrlimit
407 #define setrlimit cma_setrlimit64
408 #endif
409 /* Declare madvise where it is not declared for C++, like Solaris */
410 #if HAVE_MADVISE && !HAVE_DECL_MADVISE && defined(__cplusplus)
411 extern "C" int madvise(void *addr, size_t len, int behav);
412 #endif
413
414 #define QUOTE_ARG(x) #x /* Quote argument (before cpp) */
415 #define STRINGIFY_ARG(x) QUOTE_ARG(x) /* Quote argument, after cpp */
416
417 /* Paranoid settings. Define I_AM_PARANOID if you are paranoid */
418 #ifdef I_AM_PARANOID
419 #define DONT_ALLOW_USER_CHANGE 1
420 #define DONT_USE_MYSQL_PWD 1
421 #endif
422
423 /* Does the system remember a signal handler after a signal ? */
424 #if !defined(HAVE_BSD_SIGNALS) && !defined(HAVE_SIGACTION)
425 #define SIGNAL_HANDLER_RESET_ON_DELIVERY
426 #endif
427
428 /*
429 Deprecated workaround for false-positive uninitialized variables
430 warnings. Those should be silenced using tool-specific heuristics.
431
432 Enabled by default for g++ due to the bug referenced below.
433 */
434 #if defined(_lint) || defined(FORCE_INIT_OF_VARS) || \
435 (defined(__GNUC__) && defined(__cplusplus))
436 #define LINT_INIT(var) var= 0
437 #else
438 #define LINT_INIT(var)
439 #endif
440
441 #ifndef SO_EXT
442 #ifdef _WIN32
443 #define SO_EXT ".dll"
444 #elif defined(__APPLE__)
445 #define SO_EXT ".dylib"
446 #else
447 #define SO_EXT ".so"
448 #endif
449 #endif
450
451 /*
452 Suppress uninitialized variable warning without generating code.
453
454 The _cplusplus is a temporary workaround for C++ code pending a fix
455 for a g++ bug (http://gcc.gnu.org/bugzilla/show_bug.cgi?id=34772).
456 */
457 #if defined(_lint) || defined(FORCE_INIT_OF_VARS) || \
458 defined(__cplusplus) || !defined(__GNUC__)
459 #define UNINIT_VAR(x) x= 0
460 #else
461 /* GCC specific self-initialization which inhibits the warning. */
462 #define UNINIT_VAR(x) x= x
463 #endif
464
465 #if !defined(HAVE_UINT)
466 #undef HAVE_UINT
467 #define HAVE_UINT
468 typedef unsigned int uint;
469 typedef unsigned short ushort;
470 #endif
471
472 #define swap_variables(t, a, b) { t dummy; dummy= a; a= b; b= dummy; }
473 #define MY_TEST(a) ((a) ? 1 : 0)
474 #define set_if_bigger(a,b) do { if ((a) < (b)) (a)=(b); } while(0)
475 #define set_if_smaller(a,b) do { if ((a) > (b)) (a)=(b); } while(0)
476 #define test_all_bits(a,b) (((a) & (b)) == (b))
477 #define array_elements(A) ((uint) (sizeof(A)/sizeof(A[0])))
478
479 /* Define some general constants */
480 #ifndef TRUE
481 #define TRUE (1) /* Logical true */
482 #define FALSE (0) /* Logical false */
483 #endif
484
485 #include <my_compiler.h>
486
487 /* The DBUG_ON flag always takes precedence over default DBUG_OFF */
488 #if defined(DBUG_ON) && defined(DBUG_OFF)
489 #undef DBUG_OFF
490 #endif
491
492 /* We might be forced to turn debug off, if not turned off already */
493 #if (defined(FORCE_DBUG_OFF) || defined(_lint)) && !defined(DBUG_OFF)
494 # define DBUG_OFF
495 # ifdef DBUG_ON
496 # undef DBUG_ON
497 # endif
498 #endif
499
500 /* Some types that is different between systems */
501
502 typedef int File; /* File descriptor */
503 #ifdef _WIN32
504 typedef SOCKET my_socket;
505 #else
506 typedef int my_socket; /* File descriptor for sockets */
507 #define INVALID_SOCKET -1
508 #endif
509 /* Type for fuctions that handles signals */
510 #define sig_handler RETSIGTYPE
511 C_MODE_START
512 typedef void (*sig_return)();/* Returns type from signal */
513 C_MODE_END
514 #if defined(__GNUC__) && !defined(_lint)
515 typedef char pchar; /* Mixed prototypes can take char */
516 typedef char puchar; /* Mixed prototypes can take char */
517 typedef char pbool; /* Mixed prototypes can take char */
518 typedef short pshort; /* Mixed prototypes can take short int */
519 typedef float pfloat; /* Mixed prototypes can take float */
520 #else
521 typedef int pchar; /* Mixed prototypes can't take char */
522 typedef uint puchar; /* Mixed prototypes can't take char */
523 typedef int pbool; /* Mixed prototypes can't take char */
524 typedef int pshort; /* Mixed prototypes can't take short int */
525 typedef double pfloat; /* Mixed prototypes can't take float */
526 #endif
527 C_MODE_START
528 typedef int (*qsort_cmp)(const void *,const void *);
529 typedef int (*qsort_cmp2)(const void*, const void *,const void *);
530 C_MODE_END
531 #define qsort_t RETQSORTTYPE /* Broken GCC cant handle typedef !!!! */
532 #ifdef HAVE_SYS_SOCKET_H
533 #include <sys/socket.h>
534 #endif
535 typedef SOCKET_SIZE_TYPE size_socket;
536
537 #ifndef SOCKOPT_OPTLEN_TYPE
538 #define SOCKOPT_OPTLEN_TYPE size_socket
539 #endif
540
541 /* file create flags */
542
543 #ifndef O_SHARE /* Probably not windows */
544 #define O_SHARE 0 /* Flag to my_open for shared files */
545 #ifndef O_BINARY
546 #define O_BINARY 0 /* Flag to my_open for binary files */
547 #endif
548 #ifndef FILE_BINARY
549 #define FILE_BINARY O_BINARY /* Flag to my_fopen for binary streams */
550 #endif
551 #ifdef HAVE_FCNTL
552 #define HAVE_FCNTL_LOCK
553 #define F_TO_EOF 0L /* Param to lockf() to lock rest of file */
554 #endif
555 #endif /* O_SHARE */
556
557 #ifndef O_TEMPORARY
558 #define O_TEMPORARY 0
559 #endif
560 #ifndef O_SHORT_LIVED
561 #define O_SHORT_LIVED 0
562 #endif
563 #ifndef O_NOFOLLOW
564 #define O_NOFOLLOW 0
565 #endif
566
567 /* additional file share flags for win32 */
568 #ifdef __WIN__
569 #define _SH_DENYRWD 0x110 /* deny read/write mode & delete */
570 #define _SH_DENYWRD 0x120 /* deny write mode & delete */
571 #define _SH_DENYRDD 0x130 /* deny read mode & delete */
572 #define _SH_DENYDEL 0x140 /* deny delete only */
573 #endif /* __WIN__ */
574
575
576 /* General constants */
577 #define FN_LEN 256 /* Max file name len */
578 #define FN_HEADLEN 253 /* Max length of filepart of file name */
579 #define FN_EXTLEN 20 /* Max length of extension (part of FN_LEN) */
580 #define FN_REFLEN 512 /* Max length of full path-name */
581 #define FN_EXTCHAR '.'
582 #define FN_HOMELIB '~' /* ~/ is used as abbrev for home dir */
583 #define FN_CURLIB '.' /* ./ is used as abbrev for current dir */
584 #define FN_PARENTDIR ".." /* Parent directory; Must be a string */
585
586 #ifdef _WIN32
587 #define FN_LIBCHAR '\\'
588 #define FN_LIBCHAR2 '/'
589 #define FN_DIRSEP "/\\" /* Valid directory separators */
590 #define FN_EXEEXT ".exe"
591 #define FN_SOEXT ".dll"
592 #define FN_ROOTDIR "\\"
593 #define FN_DEVCHAR ':'
594 #define FN_NETWORK_DRIVES /* Uses \\ to indicate network drives */
595 #define FN_NO_CASE_SENCE /* Files are not case-sensitive */
596 #else
597 #define FN_LIBCHAR '/'
598 #define FN_LIBCHAR2 '/'
599 #define FN_DIRSEP "/" /* Valid directory separators */
600 #define FN_EXEEXT ""
601 #define FN_SOEXT ".so"
602 #define FN_ROOTDIR "/"
603 #endif
604
605 /*
606 MY_FILE_MIN is Windows speciality and is used to quickly detect
607 the mismatch of CRT and mysys file IO usage on Windows at runtime.
608 CRT file descriptors can be in the range 0-2047, whereas descriptors returned
609 by my_open() will start with 2048. If a file descriptor with value less then
610 MY_FILE_MIN is passed to mysys IO function, chances are it stemms from
611 open()/fileno() and not my_open()/my_fileno.
612
613 For Posix, mysys functions are light wrappers around libc, and MY_FILE_MIN
614 is logically 0.
615 */
616
617 #ifdef _WIN32
618 #define MY_FILE_MIN 2048
619 #else
620 #define MY_FILE_MIN 0
621 #endif
622
623 /*
624 MY_NFILE is the default size of my_file_info array.
625
626 It is larger on Windows, because it all file handles are stored in my_file_info
627 Default size is 16384 and this should be enough for most cases.If it is not
628 enough, --max-open-files with larger value can be used.
629
630 For Posix , my_file_info array is only used to store filenames for
631 error reporting and its size is not a limitation for number of open files.
632 */
633 #ifdef _WIN32
634 #define MY_NFILE (16384 + MY_FILE_MIN)
635 #else
636 #define MY_NFILE 64
637 #endif
638
639 #ifndef OS_FILE_LIMIT
640 #define OS_FILE_LIMIT UINT_MAX
641 #endif
642
643 /*
644 Io buffer size; Must be a power of 2 and a multiple of 512. May be
645 smaller what the disk page size. This influences the speed of the
646 isam btree library. eg to big to slow.
647 */
648 #define IO_SIZE 4096
649 /*
650 How much overhead does malloc have. The code often allocates
651 something like 1024-MALLOC_OVERHEAD bytes
652 */
653 #define MALLOC_OVERHEAD 8
654
655 /* get memory in huncs */
656 #define ONCE_ALLOC_INIT (uint) (4096-MALLOC_OVERHEAD)
657 /* Typical record cash */
658 #define RECORD_CACHE_SIZE (uint) (64*1024-MALLOC_OVERHEAD)
659 /* Typical key cash */
660 #define KEY_CACHE_SIZE (uint) (8*1024*1024)
661 /* Default size of a key cache block */
662 #define KEY_CACHE_BLOCK_SIZE (uint) 1024
663
664
665 /* Some things that this system doesn't have */
666
667 #ifdef _WIN32
668 #define NO_DIR_LIBRARY /* Not standard dir-library */
669 #endif
670
671 /* Some defines of functions for portability */
672
673 #undef remove /* Crashes MySQL on SCO 5.0.0 */
674 #ifndef __WIN__
675 #define closesocket(A) close(A)
676 #endif
677
678 #if (_MSC_VER)
679 #if !defined(_WIN64)
my_ulonglong2double(unsigned long long value)680 inline double my_ulonglong2double(unsigned long long value)
681 {
682 long long nr=(long long) value;
683 if (nr >= 0)
684 return (double) nr;
685 return (18446744073709551616.0 + (double) nr);
686 }
687 #define ulonglong2double my_ulonglong2double
688 #define my_off_t2double my_ulonglong2double
689 #endif /* _WIN64 */
my_double2ulonglong(double d)690 inline unsigned long long my_double2ulonglong(double d)
691 {
692 double t= d - (double) 0x8000000000000000ULL;
693
694 if (t >= 0)
695 return ((unsigned long long) t) + 0x8000000000000000ULL;
696 return (unsigned long long) d;
697 }
698 #define double2ulonglong my_double2ulonglong
699 #endif
700
701 #ifndef ulonglong2double
702 #define ulonglong2double(A) ((double) (ulonglong) (A))
703 #define my_off_t2double(A) ((double) (my_off_t) (A))
704 #endif
705 #ifndef double2ulonglong
706 #define double2ulonglong(A) ((ulonglong) (double) (A))
707 #endif
708
709 #ifndef offsetof
710 #define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
711 #endif
712 #define ulong_to_double(X) ((double) (ulong) (X))
713
714 #ifndef STACK_DIRECTION
715 #error "please add -DSTACK_DIRECTION=1 or -1 to your CPPFLAGS"
716 #endif
717
718 #if !defined(HAVE_STRTOK_R)
719 #define strtok_r(A,B,C) strtok((A),(B))
720 #endif
721
722 /* This is from the old m-machine.h file */
723
724 #if SIZEOF_LONG_LONG > 4
725 #define HAVE_LONG_LONG 1
726 #endif
727
728 /*
729 Some pre-ANSI-C99 systems like AIX 5.1 and Linux/GCC 2.95 define
730 ULONGLONG_MAX, LONGLONG_MIN, LONGLONG_MAX; we use them if they're defined.
731 */
732
733 #if defined(HAVE_LONG_LONG) && !defined(LONGLONG_MIN)
734 #define LONGLONG_MIN ((long long) 0x8000000000000000LL)
735 #define LONGLONG_MAX ((long long) 0x7FFFFFFFFFFFFFFFLL)
736 #endif
737
738 #if defined(HAVE_LONG_LONG) && !defined(ULONGLONG_MAX)
739 /* First check for ANSI C99 definition: */
740 #ifdef ULLONG_MAX
741 #define ULONGLONG_MAX ULLONG_MAX
742 #else
743 #define ULONGLONG_MAX ((unsigned long long)(~0ULL))
744 #endif
745 #endif /* defined (HAVE_LONG_LONG) && !defined(ULONGLONG_MAX)*/
746
747 #define INT_MIN64 (~0x7FFFFFFFFFFFFFFFLL)
748 #define INT_MAX64 0x7FFFFFFFFFFFFFFFLL
749 #define INT_MIN32 (~0x7FFFFFFFL)
750 #define INT_MAX32 0x7FFFFFFFL
751 #define UINT_MAX32 0xFFFFFFFFL
752 #define INT_MIN24 (~0x007FFFFF)
753 #define INT_MAX24 0x007FFFFF
754 #define UINT_MAX24 0x00FFFFFF
755 #define INT_MIN16 (~0x7FFF)
756 #define INT_MAX16 0x7FFF
757 #define UINT_MAX16 0xFFFF
758 #define INT_MIN8 (~0x7F)
759 #define INT_MAX8 0x7F
760 #define UINT_MAX8 0xFF
761
762 /* From limits.h instead */
763 #ifndef DBL_MIN
764 #define DBL_MIN 4.94065645841246544e-324
765 #define FLT_MIN ((float)1.40129846432481707e-45)
766 #endif
767 #ifndef DBL_MAX
768 #define DBL_MAX 1.79769313486231470e+308
769 #define FLT_MAX ((float)3.40282346638528860e+38)
770 #endif
771 #ifndef SIZE_T_MAX
772 #define SIZE_T_MAX (~((size_t) 0))
773 #endif
774
775 #include <math.h>
776
777 #if (__cplusplus >= 201103L)
778 /* For C++11 use the new std functions rather than C99 macros. */
779 #include <cmath>
780 #define my_isfinite(X) std::isfinite(X)
781 #define my_isnan(X) std::isnan(X)
782 #define my_isinf(X) std::isinf(X)
783 #else
784 #ifdef HAVE_LLVM_LIBCPP /* finite is deprecated in libc++ */
785 #define my_isfinite(X) isfinite(X)
786 #else
787 #define my_isfinite(X) finite(X)
788 #endif
789 #define my_isnan(X) isnan(X)
790 #ifdef HAVE_ISINF
791 /* System-provided isinf() is available and safe to use */
792 #define my_isinf(X) isinf(X)
793 #else /* !HAVE_ISINF */
794 #define my_isinf(X) (!my_isfinite(X) && !my_isnan(X))
795 #endif
796 #endif /* __cplusplus >= 201103L */
797
798 /* Define missing math constants. */
799 #ifndef M_PI
800 #define M_PI 3.14159265358979323846
801 #endif
802 #ifndef M_E
803 #define M_E 2.7182818284590452354
804 #endif
805 #ifndef M_LN2
806 #define M_LN2 0.69314718055994530942
807 #endif
808
809 /*
810 Max size that must be added to a so that we know Size to make
811 adressable obj.
812 */
813 #if SIZEOF_CHARP == 4
814 typedef long my_ptrdiff_t;
815 #else
816 typedef long long my_ptrdiff_t;
817 #endif
818
819 #define MY_ALIGN(A,L) (((A) + (L) - 1) & ~((L) - 1))
820 #define ALIGN_SIZE(A) MY_ALIGN((A),sizeof(double))
821 /* Size to make adressable obj. */
822 #define ADD_TO_PTR(ptr,size,type) (type) ((uchar*) (ptr)+size)
823 #define PTR_BYTE_DIFF(A,B) (my_ptrdiff_t) ((uchar*) (A) - (uchar*) (B))
824
825 /*
826 Custom version of standard offsetof() macro which can be used to get
827 offsets of members in class for non-POD types (according to the current
828 version of C++ standard offsetof() macro can't be used in such cases and
829 attempt to do so causes warnings to be emitted, OTOH in many cases it is
830 still OK to assume that all instances of the class has the same offsets
831 for the same members).
832
833 This is temporary solution which should be removed once File_parser class
834 and related routines are refactored.
835 */
836
837 #define my_offsetof(TYPE, MEMBER) \
838 ((size_t)((char *)&(((TYPE *)0x10)->MEMBER) - (char*)0x10))
839
840 #define NullS (char *) 0
841
842 #ifdef STDCALL
843 #undef STDCALL
844 #endif
845
846 #ifdef _WIN32
847 #define STDCALL __stdcall
848 #else
849 #define STDCALL
850 #endif
851
852 /* Typdefs for easyier portability */
853
854 #ifndef HAVE_UCHAR
855 typedef unsigned char uchar; /* Short for unsigned char */
856 #endif
857
858 #ifndef HAVE_INT8
859 typedef signed char int8; /* Signed integer >= 8 bits */
860 #endif
861 #ifndef HAVE_UINT8
862 typedef unsigned char uint8; /* Unsigned integer >= 8 bits */
863 #endif
864 #ifndef HAVE_INT16
865 typedef short int16;
866 #endif
867 #ifndef HAVE_UINT16
868 typedef unsigned short uint16;
869 #endif
870 #if SIZEOF_INT == 4
871 #ifndef HAVE_INT32
872 typedef int int32;
873 #endif
874 #ifndef HAVE_UINT32
875 typedef unsigned int uint32;
876 #endif
877 #elif SIZEOF_LONG == 4
878 #ifndef HAVE_INT32
879 typedef long int32;
880 #endif
881 #ifndef HAVE_UINT32
882 typedef unsigned long uint32;
883 #endif
884 #else
885 #error Neither int or long is of 4 bytes width
886 #endif
887
888 #if !defined(HAVE_ULONG) && !defined(__USE_MISC)
889 typedef unsigned long ulong; /* Short for unsigned long */
890 #endif
891 #ifndef longlong_defined
892 /*
893 Using [unsigned] long long is preferable as [u]longlong because we use
894 [unsigned] long long unconditionally in many places,
895 for example in constants with [U]LL suffix.
896 */
897 #if defined(HAVE_LONG_LONG) && SIZEOF_LONG_LONG == 8
898 typedef unsigned long long int ulonglong; /* ulong or unsigned long long */
899 typedef long long int longlong;
900 #else
901 typedef unsigned long ulonglong; /* ulong or unsigned long long */
902 typedef long longlong;
903 #endif
904 #endif
905 #ifndef HAVE_INT64
906 typedef longlong int64;
907 #endif
908 #ifndef HAVE_UINT64
909 typedef ulonglong uint64;
910 #endif
911
912 #if defined(NO_CLIENT_LONG_LONG)
913 typedef unsigned long my_ulonglong;
914 #elif defined (__WIN__)
915 typedef unsigned __int64 my_ulonglong;
916 #else
917 typedef unsigned long long my_ulonglong;
918 #endif
919
920 #if SIZEOF_CHARP == SIZEOF_INT
921 typedef int intptr;
922 #elif SIZEOF_CHARP == SIZEOF_LONG
923 typedef long intptr;
924 #elif SIZEOF_CHARP == SIZEOF_LONG_LONG
925 typedef long long intptr;
926 #else
927 #error sizeof(void *) is neither sizeof(int) nor sizeof(long) nor sizeof(long long)
928 #endif
929
930 #define MY_ERRPTR ((void*)(intptr)1)
931
932 #if defined(_WIN32)
933 typedef unsigned long long my_off_t;
934 typedef unsigned long long os_off_t;
935 #else
936 typedef off_t os_off_t;
937 #if SIZEOF_OFF_T > 4
938 typedef ulonglong my_off_t;
939 #else
940 typedef unsigned long my_off_t;
941 #endif
942 #endif /*_WIN32*/
943 #define MY_FILEPOS_ERROR (~(my_off_t) 0)
944
945 /*
946 TODO Convert these to use Bitmap class.
947 */
948 typedef ulonglong table_map; /* Used for table bits in join */
949 typedef ulonglong nesting_map; /* Used for flags of nesting constructs */
950
951 #if defined(__WIN__)
952 #define socket_errno WSAGetLastError()
953 #define SOCKET_EINTR WSAEINTR
954 #define SOCKET_EAGAIN WSAEINPROGRESS
955 #define SOCKET_EWOULDBLOCK WSAEWOULDBLOCK
956 #define SOCKET_EADDRINUSE WSAEADDRINUSE
957 #define SOCKET_ETIMEDOUT WSAETIMEDOUT
958 #define SOCKET_ECONNRESET WSAECONNRESET
959 #define SOCKET_ENFILE ENFILE
960 #define SOCKET_EMFILE EMFILE
961 #else /* Unix */
962 #define socket_errno errno
963 #define closesocket(A) close(A)
964 #define SOCKET_EINTR EINTR
965 #define SOCKET_EAGAIN EAGAIN
966 #define SOCKET_EWOULDBLOCK EWOULDBLOCK
967 #define SOCKET_EADDRINUSE EADDRINUSE
968 #define SOCKET_ETIMEDOUT ETIMEDOUT
969 #define SOCKET_ECONNRESET ECONNRESET
970 #define SOCKET_ENFILE ENFILE
971 #define SOCKET_EMFILE EMFILE
972 #endif
973
974 typedef int myf; /* Type of MyFlags in my_funcs */
975 typedef char my_bool; /* Small bool */
976
977 /* Macros for converting *constants* to the right type */
978 #define MYF(v) (myf) (v)
979
980 #ifndef LL
981 #ifdef HAVE_LONG_LONG
982 #define LL(A) A ## LL
983 #else
984 #define LL(A) A ## L
985 #endif
986 #endif
987
988 #ifndef ULL
989 #ifdef HAVE_LONG_LONG
990 #define ULL(A) A ## ULL
991 #else
992 #define ULL(A) A ## UL
993 #endif
994 #endif
995
996 /*
997 Defines to make it possible to prioritize register assignments. No
998 longer that important with modern compilers.
999 */
1000 #ifndef USING_X
1001 #define reg1 register
1002 #define reg2 register
1003 #define reg3 register
1004 #define reg4 register
1005 #define reg5 register
1006 #define reg6 register
1007 #define reg7 register
1008 #define reg8 register
1009 #define reg9 register
1010 #define reg10 register
1011 #define reg11 register
1012 #define reg12 register
1013 #define reg13 register
1014 #define reg14 register
1015 #define reg15 register
1016 #define reg16 register
1017 #endif
1018
1019 /* Some helper macros */
1020 #define YESNO(X) ((X) ? "yes" : "no")
1021
1022 #define MY_HOW_OFTEN_TO_ALARM 2 /* How often we want info on screen */
1023 #define MY_HOW_OFTEN_TO_WRITE 1000 /* How often we want info on screen */
1024
1025 #include <my_byteorder.h>
1026
1027 #ifdef HAVE_CHARSET_utf8
1028 #define MYSQL_UNIVERSAL_CLIENT_CHARSET "utf8"
1029 #else
1030 #define MYSQL_UNIVERSAL_CLIENT_CHARSET MYSQL_DEFAULT_CHARSET_NAME
1031 #endif
1032
1033 #if defined(EMBEDDED_LIBRARY) && !defined(HAVE_EMBEDDED_PRIVILEGE_CONTROL)
1034 #define NO_EMBEDDED_ACCESS_CHECKS
1035 #endif
1036
1037 #if defined(_WIN32)
1038 #define dlsym(lib, name) (void*)GetProcAddress((HMODULE)lib, name)
1039 #define dlopen(libname, unused) LoadLibraryEx(libname, NULL, 0)
1040 #define dlclose(lib) FreeLibrary((HMODULE)lib)
1041 #ifndef HAVE_DLOPEN
1042 #define HAVE_DLOPEN
1043 #endif
1044 #endif
1045
1046 #ifdef HAVE_DLOPEN
1047 #if defined(HAVE_DLFCN_H)
1048 #include <dlfcn.h>
1049 #endif
1050 #endif
1051
1052 #ifndef HAVE_DLERROR
1053 #ifdef _WIN32
1054 #define DLERROR_GENERATE(errmsg, error_number) \
1055 char win_errormsg[2048]; \
1056 if(FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM, \
1057 0, error_number, 0, win_errormsg, 2048, NULL)) \
1058 { \
1059 char *ptr; \
1060 for (ptr= &win_errormsg[0] + strlen(win_errormsg) - 1; \
1061 ptr >= &win_errormsg[0] && strchr("\r\n\t\0x20", *ptr); \
1062 ptr--) \
1063 *ptr= 0; \
1064 errmsg= win_errormsg; \
1065 } \
1066 else \
1067 errmsg= ""
1068 #define dlerror() ""
1069 #define dlopen_errno GetLastError()
1070 #else /* _WIN32 */
1071 #define dlerror() "No support for dynamic loading (static build?)"
1072 #define DLERROR_GENERATE(errmsg, error_number) errmsg= dlerror()
1073 #define dlopen_errno errno
1074 #endif /* _WIN32 */
1075 #else /* HAVE_DLERROR */
1076 #define DLERROR_GENERATE(errmsg, error_number) errmsg= dlerror()
1077 #define dlopen_errno errno
1078 #endif /* HAVE_DLERROR */
1079
1080
1081 /*
1082 * Include standard definitions of operator new and delete.
1083 */
1084 #ifdef __cplusplus
1085 #include <new>
1086 #endif
1087
1088 /* Length of decimal number represented by INT32. */
1089 #define MY_INT32_NUM_DECIMAL_DIGITS 11U
1090
1091 /* Length of decimal number represented by INT64. */
1092 #define MY_INT64_NUM_DECIMAL_DIGITS 21U
1093
1094 /* Define some useful general macros (should be done after all headers). */
1095 #define MY_MAX(a, b) ((a) > (b) ? (a) : (b))
1096 #define MY_MIN(a, b) ((a) < (b) ? (a) : (b))
1097
1098 /*
1099 Only Linux is known to need an explicit sync of the directory to make sure a
1100 file creation/deletion/renaming in(from,to) this directory durable.
1101 */
1102 #ifdef TARGET_OS_LINUX
1103 #define NEED_EXPLICIT_SYNC_DIR 1
1104 #else
1105 /*
1106 On linux default rwlock scheduling policy is good enough for
1107 waiting_threads.c, on other systems use our special implementation
1108 (which is slower).
1109
1110 QQ perhaps this should be tested in configure ? how ?
1111 */
1112 #define WT_RWLOCKS_USE_MUTEXES 1
1113 #endif
1114
1115 #if !defined(__cplusplus) && !defined(bool)
1116 #define bool In_C_you_should_use_my_bool_instead()
1117 #endif
1118
1119 /* Provide __func__ macro definition for platforms that miss it. */
1120 #if __STDC_VERSION__ < 199901L
1121 # if __GNUC__ >= 2
1122 # define __func__ __FUNCTION__
1123 # else
1124 # define __func__ "<unknown>"
1125 # endif
1126 #elif defined(_MSC_VER)
1127 # if _MSC_VER < 1300
1128 # define __func__ "<unknown>"
1129 # else
1130 # define __func__ __FUNCTION__
1131 # endif
1132 #elif defined(__BORLANDC__)
1133 # define __func__ __FUNC__
1134 #else
1135 # define __func__ "<unknown>"
1136 #endif
1137
1138 #ifndef HAVE_RINT
1139 /**
1140 All integers up to this number can be represented exactly as double precision
1141 values (DBL_MANT_DIG == 53 for IEEE 754 hardware).
1142 */
1143 #define MAX_EXACT_INTEGER ((1LL << DBL_MANT_DIG) - 1)
1144
1145 /**
1146 rint(3) implementation for platforms that do not have it.
1147 Always rounds to the nearest integer with ties being rounded to the nearest
1148 even integer to mimic glibc's rint() behavior in the "round-to-nearest"
1149 FPU mode. Hardware-specific optimizations are possible (frndint on x86).
1150 Unlike this implementation, hardware will also honor the FPU rounding mode.
1151 */
1152
rint(double x)1153 static inline double rint(double x)
1154 {
1155 double f, i;
1156 f = modf(x, &i);
1157 /*
1158 All doubles with absolute values > MAX_EXACT_INTEGER are even anyway,
1159 no need to check it.
1160 */
1161 if (x > 0.0)
1162 i += (double) ((f > 0.5) || (f == 0.5 &&
1163 i <= (double) MAX_EXACT_INTEGER &&
1164 (longlong) i % 2));
1165 else
1166 i -= (double) ((f < -0.5) || (f == -0.5 &&
1167 i >= (double) -MAX_EXACT_INTEGER &&
1168 (longlong) i % 2));
1169 return i;
1170 }
1171 #endif /* HAVE_RINT */
1172
1173 /*
1174 MYSQL_PLUGIN_IMPORT macro is used to export mysqld data
1175 (i.e variables) for usage in storage engine loadable plugins.
1176 Outside of Windows, it is dummy.
1177 */
1178 #ifndef MYSQL_PLUGIN_IMPORT
1179 #if (defined(_WIN32) && defined(MYSQL_DYNAMIC_PLUGIN))
1180 #define MYSQL_PLUGIN_IMPORT __declspec(dllimport)
1181 #else
1182 #define MYSQL_PLUGIN_IMPORT
1183 #endif
1184 #endif
1185
1186 #include <my_dbug.h>
1187
1188 /* Defines that are unique to the embedded version of MySQL */
1189
1190 #ifdef EMBEDDED_LIBRARY
1191
1192 /* Things we don't need in the embedded version of MySQL */
1193 /* TODO HF add #undef HAVE_VIO if we don't want client in embedded library */
1194
1195 #undef HAVE_OPENSSL
1196 #undef HAVE_SMEM /* No shared memory */
1197
1198 #endif /* EMBEDDED_LIBRARY */
1199
1200
1201 enum loglevel {
1202 ERROR_LEVEL= 0,
1203 WARNING_LEVEL= 1,
1204 INFORMATION_LEVEL= 2
1205 };
1206
1207
1208 /*
1209 Visual Studio before the version 2010 did not have lldiv_t.
1210 In Visual Studio 2010, _MSC_VER is defined as 1600.
1211 */
1212 #if defined(_MSC_VER) && (_MSC_VER < 1600)
1213 typedef struct
1214 {
1215 long long int quot; /* Quotient. */
1216 long long int rem; /* Remainder. */
1217 } lldiv_t;
1218 #endif
1219
1220 #endif // MY_GLOBAL_INCLUDED
1221