diff options
Diffstat (limited to 'storage/innobase/include/mach0data.ic')
| -rw-r--r-- | storage/innobase/include/mach0data.ic | 62 |
1 files changed, 29 insertions, 33 deletions
diff --git a/storage/innobase/include/mach0data.ic b/storage/innobase/include/mach0data.ic index 31cb873cdf6..6c879b38354 100644 --- a/storage/innobase/include/mach0data.ic +++ b/storage/innobase/include/mach0data.ic @@ -1,6 +1,7 @@ /***************************************************************************** Copyright (c) 1995, 2015, Oracle and/or its affiliates. All Rights Reserved. +Copyright (c) 2017, MariaDB Corporation. 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 @@ -62,30 +63,28 @@ mach_write_to_2( b[1] = (byte)(n); } -/********************************************************//** -The following function is used to fetch data from one byte. +/** The following function is used to fetch data from one byte. +@param[in] b pointer to a byte to read @return ulint integer, >= 0, < 256 */ UNIV_INLINE -ulint +uint8_t mach_read_from_1( -/*=============*/ - const byte* b) /*!< in: pointer to byte */ + const byte* b) { ut_ad(b); - return((ulint)(b[0])); + return(uint8_t(*b)); } -/********************************************************//** -The following function is used to fetch data from 2 consecutive +/** The following function is used to fetch data from 2 consecutive bytes. The most significant byte is at the lowest address. -@return ulint integer */ +@param[in] b pointer to 2 bytes to read +@return 2-byte integer, >= 0, < 64k */ UNIV_INLINE -ulint +uint16_t mach_read_from_2( -/*=============*/ - const byte* b) /*!< in: pointer to 2 bytes */ + const byte* b) { - return(((ulint)(b[0]) << 8) | (ulint)(b[1])); + return(uint16_t(uint16_t(b[0]) << 8 | b[1])); } #ifndef UNIV_INNOCHECKSUM @@ -139,23 +138,21 @@ mach_write_to_3( b[2] = (byte)(n); } -/********************************************************//** -The following function is used to fetch data from 3 consecutive +/** The following function is used to fetch data from 3 consecutive bytes. The most significant byte is at the lowest address. -@return ulint integer */ +@param[in] b pointer to 3 bytes to read +@return uint32_t integer */ UNIV_INLINE -ulint +uint32_t mach_read_from_3( -/*=============*/ - const byte* b) /*!< in: pointer to 3 bytes */ + const byte* b) { ut_ad(b); - return( ((ulint)(b[0]) << 16) - | ((ulint)(b[1]) << 8) - | (ulint)(b[2]) + return( (static_cast<uint32_t>(b[0]) << 16) + | (static_cast<uint32_t>(b[1]) << 8) + | static_cast<uint32_t>(b[2]) ); } - #endif /* !UNIV_INNOCHECKSUM */ /*******************************************************//** @@ -176,21 +173,20 @@ mach_write_to_4( b[3] = (byte) n; } -/********************************************************//** -The following function is used to fetch data from 4 consecutive +/** The following function is used to fetch data from 4 consecutive bytes. The most significant byte is at the lowest address. -@return ulint integer */ +@param[in] b pointer to 4 bytes to read +@return 32 bit integer */ UNIV_INLINE -ulint +uint32_t mach_read_from_4( -/*=============*/ - const byte* b) /*!< in: pointer to four bytes */ + const byte* b) { ut_ad(b); - return( ((ulint)(b[0]) << 24) - | ((ulint)(b[1]) << 16) - | ((ulint)(b[2]) << 8) - | (ulint)(b[3]) + return( (static_cast<uint32_t>(b[0]) << 24) + | (static_cast<uint32_t>(b[1]) << 16) + | (static_cast<uint32_t>(b[2]) << 8) + | static_cast<uint32_t>(b[3]) ); } |