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f4d75452fc
Apparently, invoking fcntl(fd, F_SETFL, O_DIRECT) will lead to unexpected behaviour on Linux bcachefs and possibly other file systems, depending on the operating system version. So, let us avoid doing that, and instead just attempt to pass the O_DIRECT flag to open(). This should make us compatible with NetBSD, IBM AIX, as well as Solaris and its derivatives. We will only implement innodb_log_file_buffering=OFF on systems where we can determine the physical block size (typically 512 or 4096 bytes). Currently, those operating systems are Linux and Microsoft Windows. HAVE_FCNTL_DIRECT, os_file_set_nocache(): Remove. OS_FILE_OVERWRITE, OS_FILE_CREATE_PATH: Remove (never used parameters). os_file_log_buffered(), os_file_log_maybe_unbuffered(): Helper functions. os_file_create_func(): When applicable, initially attempt to open files in O_DIRECT mode. For type==OS_LOG_FILE && create_mode != OS_FILE_CREATE we will first invoke stat(2) on the file name to find out if the size is compatible with O_DIRECT. If create_mode == OS_FILE_CREATE, we will invoke fstat(2) on the created log file afterwards, and may close and reopen the file in O_DIRECT mode if applicable. create_temp_file(): Support O_DIRECT. This is only used if O_TMPFILE is available and innodb_disable_sort_file_cache=ON (non-default value). Notably, that setting never worked on Microsoft Windows. row_merge_file_create_mode(): Split from row_merge_file_create_low(). Create a temporary file in the specified mode. Reviewed by: Vladislav Vaintroub
99 lines
3.2 KiB
CMake
99 lines
3.2 KiB
CMake
# Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; version 2 of the License.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335 USA
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INCLUDE(CheckSymbolExists)
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INCLUDE(CheckCSourceRuns)
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INCLUDE(CheckCSourceCompiles)
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# Enable 64 bit file offsets
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SET(_FILE_OFFSET_BITS 64)
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# Legacy option, without it my_pthread is having problems
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ADD_DEFINITIONS(-DHAVE_RWLOCK_T)
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# On Solaris, use of intrinsics will screw the lib search logic
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# Force using -lm, so rint etc are found.
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SET(LIBM m)
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# CMake defined -lthread as thread flag. This crashes in dlopen
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# when trying to load plugins workaround with -lpthread
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SET(CMAKE_THREADS_LIBS_INIT -lpthread CACHE INTERNAL "" FORCE)
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# Solaris specific large page support
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CHECK_SYMBOL_EXISTS(MHA_MAPSIZE_VA sys/mman.h HAVE_DECL_MHA_MAPSIZE_VA)
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IF(HAVE_DECL_MHA_MAPSIZE_VA)
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SET(HAVE_SOLARIS_LARGE_PAGES 1)
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ENDIF()
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# Solaris atomics
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CHECK_C_SOURCE_RUNS(
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"
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#include <atomic.h>
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int main()
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{
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int foo = -10; int bar = 10;
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int64_t foo64 = -10; int64_t bar64 = 10;
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if (atomic_add_int_nv((uint_t *)&foo, bar) || foo)
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return -1;
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bar = atomic_swap_uint((uint_t *)&foo, (uint_t)bar);
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if (bar || foo != 10)
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return -1;
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bar = atomic_cas_uint((uint_t *)&bar, (uint_t)foo, 15);
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if (bar)
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return -1;
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if (atomic_add_64_nv((volatile uint64_t *)&foo64, bar64) || foo64)
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return -1;
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bar64 = atomic_swap_64((volatile uint64_t *)&foo64, (uint64_t)bar64);
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if (bar64 || foo64 != 10)
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return -1;
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bar64 = atomic_cas_64((volatile uint64_t *)&bar64, (uint_t)foo64, 15);
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if (bar64)
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return -1;
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atomic_or_64((volatile uint64_t *)&bar64, 0);
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return 0;
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}
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" HAVE_SOLARIS_ATOMIC)
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# Check is special processor flag needs to be set on older GCC
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#that defaults to v8 sparc . Code here is taken from my_rdtsc.h
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IF(CMAKE_COMPILER_IS_GNUCC AND CMAKE_SIZEOF_VOID_P EQUAL 4
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AND CMAKE_SYSTEM_PROCESSOR MATCHES "sparc")
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SET(SOURCE
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"
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int main()
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{
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long high\;
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long low\;
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__asm __volatile__ (\"rd %%tick,%1\; srlx %1,32,%0\" : \"=r\" ( high), \"=r\" (low))\;
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return 0\;
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} ")
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CHECK_C_SOURCE_COMPILES(${SOURCE} HAVE_SPARC32_TICK)
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IF(NOT HAVE_SPARC32_TICK)
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SET(CMAKE_REQUIRED_FLAGS "-mcpu=v9")
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CHECK_C_SOURCE_COMPILES(${SOURCE} HAVE_SPARC32_TICK_WITH_V9)
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SET(CMAKE_REQUIRED_FLAGS)
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IF(HAVE_SPARC32_TICK_WITH_V9)
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SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -mcpu=v9")
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SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mcpu=v9")
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ENDIF()
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ENDIF()
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ENDIF()
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IF(CMAKE_CXX_COMPILER_ID MATCHES "SunPro")
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# Unnamed structs and unions
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SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -features=extensions")
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ENDIF()
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