diff options
Diffstat (limited to 'storage/innobase/include/ut0ut.h')
| -rw-r--r-- | storage/innobase/include/ut0ut.h | 112 |
1 files changed, 81 insertions, 31 deletions
diff --git a/storage/innobase/include/ut0ut.h b/storage/innobase/include/ut0ut.h index 47ab6eb9b74..35b8a580e68 100644 --- a/storage/innobase/include/ut0ut.h +++ b/storage/innobase/include/ut0ut.h @@ -1,13 +1,6 @@ /***************************************************************************** -Copyright (c) 1994, 2010, Innobase Oy. All Rights Reserved. -Copyright (c) 2009, Sun Microsystems, Inc. - -Portions of this file contain modifications contributed and copyrighted by -Sun Microsystems, Inc. Those modifications are gratefully acknowledged and -are described briefly in the InnoDB documentation. The contributions by -Sun Microsystems are incorporated with their permission, and subject to the -conditions contained in the file COPYING.Sun_Microsystems. +Copyright (c) 1994, 2011, Oracle and/or its affiliates. All Rights Reserved. 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 @@ -18,8 +11,8 @@ 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., 59 Temple -Place, Suite 330, Boston, MA 02111-1307 USA +this program; if not, write to the Free Software Foundation, Inc., +51 Franklin Street, Suite 500, Boston, MA 02110-1335 USA *****************************************************************************/ @@ -35,6 +28,8 @@ Created 1/20/1994 Heikki Tuuri #include "univ.i" +#ifndef UNIV_INNOCHECKSUM + #include "db0err.h" #ifndef UNIV_HOTBACKUP @@ -46,6 +41,8 @@ Created 1/20/1994 Heikki Tuuri #include <ctype.h> #endif +#include <stdarg.h> /* for va_list */ + /** Index name prefix in fast index creation */ #define TEMP_INDEX_PREFIX '\377' /** Index name prefix in fast index creation, as a string constant */ @@ -55,27 +52,32 @@ Created 1/20/1994 Heikki Tuuri typedef time_t ib_time_t; #ifndef UNIV_HOTBACKUP -#if defined(HAVE_PAUSE_INSTRUCTION) +# if defined(HAVE_PAUSE_INSTRUCTION) /* According to the gcc info page, asm volatile means that the instruction has important side-effects and must not be removed. Also asm volatile may trigger a memory barrier (spilling all registers to memory). */ -# define UT_RELAX_CPU() __asm__ __volatile__ ("pause") -#elif defined(HAVE_FAKE_PAUSE_INSTRUCTION) +# ifdef __SUNPRO_CC +# define UT_RELAX_CPU() asm ("pause" ) +# else +# define UT_RELAX_CPU() __asm__ __volatile__ ("pause") +# endif /* __SUNPRO_CC */ + +# elif defined(HAVE_FAKE_PAUSE_INSTRUCTION) # define UT_RELAX_CPU() __asm__ __volatile__ ("rep; nop") -#elif defined(HAVE_WINDOWS_ATOMICS) - /* In the Win32 API, the x86 PAUSE instruction is executed by calling - the YieldProcessor macro defined in WinNT.h. It is a CPU architecture- - independent way by using YieldProcessor. */ -# define UT_RELAX_CPU() YieldProcessor() -#elif defined(HAVE_ATOMIC_BUILTINS) +# elif defined(HAVE_ATOMIC_BUILTINS) # define UT_RELAX_CPU() do { \ volatile lint volatile_var; \ os_compare_and_swap_lint(&volatile_var, 0, 1); \ } while (0) -#else +# elif defined(HAVE_WINDOWS_ATOMICS) + /* In the Win32 API, the x86 PAUSE instruction is executed by calling + the YieldProcessor macro defined in WinNT.h. It is a CPU architecture- + independent way by using YieldProcessor. */ +# define UT_RELAX_CPU() YieldProcessor() +# else # define UT_RELAX_CPU() ((void)0) /* avoid warning for an empty statement */ -#endif +# endif /*********************************************************************//** Delays execution for at most max_wait_us microseconds or returns earlier @@ -94,16 +96,9 @@ do { \ } while (0) #endif /* !UNIV_HOTBACKUP */ -/********************************************************//** -Gets the high 32 bits in a ulint. That is makes a shift >> 32, -but since there seem to be compiler bugs in both gcc and Visual C++, -we do this by a special conversion. -@return a >> 32 */ -UNIV_INTERN -ulint -ut_get_high32( -/*==========*/ - ulint a); /*!< in: ulint */ +template <class T> T ut_min(T a, T b) { return(a < b ? a : b); } +template <class T> T ut_max(T a, T b) { return(a > b ? a : b); } + /******************************************************//** Calculates the minimum of two ulints. @return minimum */ @@ -261,6 +256,16 @@ ut_time_ms(void); #endif /* !UNIV_HOTBACKUP */ /**********************************************************//** +Returns the number of milliseconds since some epoch. The +value may wrap around. It should only be used for heuristic +purposes. +@return ms since epoch */ +UNIV_INTERN +ulint +ut_time_ms(void); +/*============*/ + +/**********************************************************//** Returns the difference of two times in seconds. @return time2 - time1 expressed in seconds */ UNIV_INTERN @@ -269,6 +274,9 @@ ut_difftime( /*========*/ ib_time_t time2, /*!< in: time */ ib_time_t time1); /*!< in: time */ + +#endif /* !UNIV_INNOCHECKSUM */ + /**********************************************************//** Prints a timestamp to a file. */ UNIV_INTERN @@ -277,6 +285,9 @@ ut_print_timestamp( /*===============*/ FILE* file) /*!< in: file where to print */ UNIV_COLD __attribute__((nonnull)); + +#ifndef UNIV_INNOCHECKSUM + /**********************************************************//** Sprintfs a timestamp to a buffer, 13..14 chars plus terminating NUL. */ UNIV_INTERN @@ -379,6 +390,22 @@ ut_copy_file( #ifdef __WIN__ /**********************************************************************//** +A substitute for vsnprintf(3), formatted output conversion into +a limited buffer. Note: this function DOES NOT return the number of +characters that would have been printed if the buffer was unlimited because +VC's _vsnprintf() returns -1 in this case and we would need to call +_vscprintf() in addition to estimate that but we would need another copy +of "ap" for that and VC does not provide va_copy(). */ +UNIV_INTERN +void +ut_vsnprintf( +/*=========*/ + char* str, /*!< out: string */ + size_t size, /*!< in: str size */ + const char* fmt, /*!< in: format */ + va_list ap); /*!< in: format values */ + +/**********************************************************************//** A substitute for snprintf(3), formatted output conversion into a limited buffer. @return number of characters that would have been printed if the size @@ -393,6 +420,15 @@ ut_snprintf( ...); /*!< in: format values */ #else /**********************************************************************//** +A wrapper for vsnprintf(3), formatted output conversion into +a limited buffer. Note: this function DOES NOT return the number of +characters that would have been printed if the buffer was unlimited because +VC's _vsnprintf() returns -1 in this case and we would need to call +_vscprintf() in addition to estimate that but we would need another copy +of "ap" for that and VC does not provide va_copy(). */ +# define ut_vsnprintf(buf, size, fmt, ap) \ + ((void) vsnprintf(buf, size, fmt, ap)) +/**********************************************************************//** A wrapper for snprintf(3), formatted output conversion into a limited buffer. */ # define ut_snprintf snprintf @@ -408,9 +444,23 @@ ut_strerr( /*======*/ enum db_err num); /*!< in: error number */ +/**************************************************************** +Sort function for ulint arrays. */ +UNIV_INTERN +void +ut_ulint_sort( +/*==========*/ + ulint* arr, /*!< in/out: array to sort */ + ulint* aux_arr, /*!< in/out: aux array to use in sort */ + ulint low, /*!< in: lower bound */ + ulint high) /*!< in: upper bound */ + __attribute__((nonnull)); + #ifndef UNIV_NONINL #include "ut0ut.ic" #endif +#endif /* !UNIV_INNOCHECKSUM */ + #endif |