diff options
Diffstat (limited to 'externals/mysql/atomic')
| -rw-r--r-- | externals/mysql/atomic/gcc_builtins.h | 38 | ||||
| -rw-r--r-- | externals/mysql/atomic/generic-msvc.h | 115 | ||||
| -rw-r--r-- | externals/mysql/atomic/nolock.h | 48 | ||||
| -rw-r--r-- | externals/mysql/atomic/rwlock.h | 57 | ||||
| -rw-r--r-- | externals/mysql/atomic/x86-gcc.h | 69 |
5 files changed, 0 insertions, 327 deletions
diff --git a/externals/mysql/atomic/gcc_builtins.h b/externals/mysql/atomic/gcc_builtins.h deleted file mode 100644 index 4600a0ef4b1..00000000000 --- a/externals/mysql/atomic/gcc_builtins.h +++ /dev/null @@ -1,38 +0,0 @@ -/* Copyright (C) 2008 MySQL AB - - 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ - -#define MY_ATOMIC_MODE "atomic_builtins" - -#define make_atomic_add_body(S) \ - v= __sync_fetch_and_add(a, v); -#define make_atomic_swap_body(S) \ - v= __sync_lock_test_and_set(a, v); -#define make_atomic_cas_body(S) \ - int ## S sav; \ - sav= __sync_val_compare_and_swap(a, *cmp, set); \ - if (!(ret= (sav == *cmp))) *cmp= sav; - -#ifdef MY_ATOMIC_MODE_DUMMY -#define make_atomic_load_body(S) ret= *a -#define make_atomic_store_body(S) *a= v -#define MY_ATOMIC_MODE "gcc-builtins-up" - -#else -#define MY_ATOMIC_MODE "gcc-builtins-smp" -#define make_atomic_load_body(S) \ - ret= __sync_fetch_and_or(a, 0); -#define make_atomic_store_body(S) \ - (void) __sync_lock_test_and_set(a, v); -#endif diff --git a/externals/mysql/atomic/generic-msvc.h b/externals/mysql/atomic/generic-msvc.h deleted file mode 100644 index a8601e993ba..00000000000 --- a/externals/mysql/atomic/generic-msvc.h +++ /dev/null @@ -1,115 +0,0 @@ -/* Copyright (C) 2006-2008 MySQL AB, 2008-2009 Sun Microsystems, Inc. - - 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ - -#ifndef _atomic_h_cleanup_ -#define _atomic_h_cleanup_ "atomic/generic-msvc.h" - -/* - We don't implement anything specific for MY_ATOMIC_MODE_DUMMY, always use - intrinsics. - 8 and 16-bit atomics are not implemented, but it can be done if necessary. -*/ - -/* - x86 compilers (both VS2003 or VS2005) never use instrinsics, but generate - function calls to kernel32 instead, even in the optimized build. - We force intrinsics as described in MSDN documentation for - _InterlockedCompareExchange. -*/ -#ifdef _M_IX86 - -#if (_MSC_VER >= 1500) -#include <intrin.h> -#else -C_MODE_START -/*Visual Studio 2003 and earlier do not have prototypes for atomic intrinsics*/ -LONG _InterlockedExchange (LONG volatile *Target,LONG Value); -LONG _InterlockedCompareExchange (LONG volatile *Target, LONG Value, LONG Comp); -LONG _InterlockedExchangeAdd (LONG volatile *Addend, LONG Value); -C_MODE_END - -#pragma intrinsic(_InterlockedExchangeAdd) -#pragma intrinsic(_InterlockedCompareExchange) -#pragma intrinsic(_InterlockedExchange) -#endif - -#define InterlockedExchange _InterlockedExchange -#define InterlockedExchangeAdd _InterlockedExchangeAdd -#define InterlockedCompareExchange _InterlockedCompareExchange -/* - No need to do something special for InterlockedCompareExchangePointer - as it is a #define to InterlockedCompareExchange. The same applies to - InterlockedExchangePointer. -*/ -#endif /*_M_IX86*/ - -#define MY_ATOMIC_MODE "msvc-intrinsics" -#define IL_EXCHG_ADD32(X,Y) InterlockedExchangeAdd((volatile LONG *)(X),(Y)) -#define IL_COMP_EXCHG32(X,Y,Z) InterlockedCompareExchange((volatile LONG *)(X),(Y),(Z)) -#define IL_COMP_EXCHGptr InterlockedCompareExchangePointer -#define IL_EXCHG32(X,Y) InterlockedExchange((volatile LONG *)(X),(Y)) -#define IL_EXCHGptr InterlockedExchangePointer -#define make_atomic_add_body(S) \ - v= IL_EXCHG_ADD ## S (a, v) -#define make_atomic_cas_body(S) \ - int ## S initial_cmp= *cmp; \ - int ## S initial_a= IL_COMP_EXCHG ## S (a, set, initial_cmp); \ - if (!(ret= (initial_a == initial_cmp))) *cmp= initial_a; -#define make_atomic_swap_body(S) \ - v= IL_EXCHG ## S (a, v) -#define make_atomic_load_body(S) \ - ret= 0; /* avoid compiler warning */ \ - ret= IL_COMP_EXCHG ## S (a, ret, ret); - -/* - my_yield_processor (equivalent of x86 PAUSE instruction) should be used - to improve performance on hyperthreaded CPUs. Intel recommends to use it in - spin loops also on non-HT machines to reduce power consumption (see e.g - http://softwarecommunity.intel.com/articles/eng/2004.htm) - - Running benchmarks for spinlocks implemented with InterlockedCompareExchange - and YieldProcessor shows that much better performance is achieved by calling - YieldProcessor in a loop - that is, yielding longer. On Intel boxes setting - loop count in the range 200-300 brought best results. - */ -#ifndef YIELD_LOOPS -#define YIELD_LOOPS 200 -#endif - -static __inline int my_yield_processor() -{ - int i; - for(i=0; i<YIELD_LOOPS; i++) - { -#if (_MSC_VER <= 1310) - /* On older compilers YieldProcessor is not available, use inline assembly*/ - __asm { rep nop } -#else - YieldProcessor(); -#endif - } - return 1; -} - -#define LF_BACKOFF my_yield_processor() -#else /* cleanup */ - -#undef IL_EXCHG_ADD32 -#undef IL_COMP_EXCHG32 -#undef IL_COMP_EXCHGptr -#undef IL_EXCHG32 -#undef IL_EXCHGptr - -#endif diff --git a/externals/mysql/atomic/nolock.h b/externals/mysql/atomic/nolock.h deleted file mode 100644 index e175c7d36db..00000000000 --- a/externals/mysql/atomic/nolock.h +++ /dev/null @@ -1,48 +0,0 @@ -/* Copyright (C) 2006 MySQL AB - - 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ - -#if defined(__i386__) || defined(_MSC_VER) || defined(__x86_64__) \ - || defined(HAVE_GCC_ATOMIC_BUILTINS) - -# ifdef MY_ATOMIC_MODE_DUMMY -# define LOCK_prefix "" -# else -# define LOCK_prefix "lock" -# endif - -# ifdef HAVE_GCC_ATOMIC_BUILTINS -# include "gcc_builtins.h" -# elif __GNUC__ -# include "x86-gcc.h" -# elif defined(_MSC_VER) -# include "generic-msvc.h" -# endif -#endif - -#ifdef make_atomic_cas_body -/* - Type not used so minimal size (emptry struct has different size between C - and C++, zero-length array is gcc-specific). -*/ -typedef char my_atomic_rwlock_t __attribute__ ((unused)); -#define my_atomic_rwlock_destroy(name) -#define my_atomic_rwlock_init(name) -#define my_atomic_rwlock_rdlock(name) -#define my_atomic_rwlock_wrlock(name) -#define my_atomic_rwlock_rdunlock(name) -#define my_atomic_rwlock_wrunlock(name) - -#endif - diff --git a/externals/mysql/atomic/rwlock.h b/externals/mysql/atomic/rwlock.h deleted file mode 100644 index 9e81657a90c..00000000000 --- a/externals/mysql/atomic/rwlock.h +++ /dev/null @@ -1,57 +0,0 @@ -/* Copyright (C) 2006 MySQL AB - - 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ - -typedef struct {pthread_mutex_t rw;} my_atomic_rwlock_t; -#define MY_ATOMIC_MODE_RWLOCKS 1 - -#ifdef MY_ATOMIC_MODE_DUMMY -/* - the following can never be enabled by ./configure, one need to put #define in - a source to trigger the following warning. The resulting code will be broken, - it only makes sense to do it to see now test_atomic detects broken - implementations (another way is to run a UP build on an SMP box). -*/ -#warning MY_ATOMIC_MODE_DUMMY and MY_ATOMIC_MODE_RWLOCKS are incompatible -#define my_atomic_rwlock_destroy(name) -#define my_atomic_rwlock_init(name) -#define my_atomic_rwlock_rdlock(name) -#define my_atomic_rwlock_wrlock(name) -#define my_atomic_rwlock_rdunlock(name) -#define my_atomic_rwlock_wrunlock(name) -#define MY_ATOMIC_MODE "dummy (non-atomic)" -#else -/* - we're using read-write lock macros but map them to mutex locks, and they're - faster. Still, having semantically rich API we can change the - underlying implementation, if necessary. -*/ -#define my_atomic_rwlock_destroy(name) pthread_mutex_destroy(& (name)->rw) -#define my_atomic_rwlock_init(name) pthread_mutex_init(& (name)->rw, 0) -#define my_atomic_rwlock_rdlock(name) pthread_mutex_lock(& (name)->rw) -#define my_atomic_rwlock_wrlock(name) pthread_mutex_lock(& (name)->rw) -#define my_atomic_rwlock_rdunlock(name) pthread_mutex_unlock(& (name)->rw) -#define my_atomic_rwlock_wrunlock(name) pthread_mutex_unlock(& (name)->rw) -#define MY_ATOMIC_MODE "mutex" -#ifndef MY_ATOMIC_MODE_RWLOCKS -#define MY_ATOMIC_MODE_RWLOCKS 1 -#endif -#endif - -#define make_atomic_add_body(S) int ## S sav; sav= *a; *a+= v; v=sav; -#define make_atomic_fas_body(S) int ## S sav; sav= *a; *a= v; v=sav; -#define make_atomic_cas_body(S) if ((ret= (*a == *cmp))) *a= set; else *cmp=*a; -#define make_atomic_load_body(S) ret= *a; -#define make_atomic_store_body(S) *a= v; - diff --git a/externals/mysql/atomic/x86-gcc.h b/externals/mysql/atomic/x86-gcc.h deleted file mode 100644 index 5a34bc22f9e..00000000000 --- a/externals/mysql/atomic/x86-gcc.h +++ /dev/null @@ -1,69 +0,0 @@ -/* Copyright (C) 2006 MySQL AB - - 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ - -/* - XXX 64-bit atomic operations can be implemented using - cmpxchg8b, if necessary. Though I've heard that not all 64-bit - architectures support double-word (128-bit) cas. -*/ - -#ifdef __x86_64__ -# ifdef MY_ATOMIC_NO_XADD -# define MY_ATOMIC_MODE "gcc-amd64" LOCK_prefix "-no-xadd" -# else -# define MY_ATOMIC_MODE "gcc-amd64" LOCK_prefix -# endif -#else -# ifdef MY_ATOMIC_NO_XADD -# define MY_ATOMIC_MODE "gcc-x86" LOCK_prefix "-no-xadd" -# else -# define MY_ATOMIC_MODE "gcc-x86" LOCK_prefix -# endif -#endif - -/* fix -ansi errors while maintaining readability */ -#ifndef asm -#define asm __asm__ -#endif - -#ifndef MY_ATOMIC_NO_XADD -#define make_atomic_add_body(S) \ - asm volatile (LOCK_prefix "; xadd %0, %1;" : "+r" (v) , "+m" (*a)) -#endif -#define make_atomic_fas_body(S) \ - asm volatile ("xchg %0, %1;" : "+r" (v) , "+m" (*a)) -#define make_atomic_cas_body(S) \ - asm volatile (LOCK_prefix "; cmpxchg %3, %0; setz %2;" \ - : "+m" (*a), "+a" (*cmp), "=q" (ret): "r" (set)) - -#ifdef MY_ATOMIC_MODE_DUMMY -#define make_atomic_load_body(S) ret=*a -#define make_atomic_store_body(S) *a=v -#else -/* - Actually 32-bit reads/writes are always atomic on x86 - But we add LOCK_prefix here anyway to force memory barriers -*/ -#define make_atomic_load_body(S) \ - ret=0; \ - asm volatile (LOCK_prefix "; cmpxchg %2, %0" \ - : "+m" (*a), "+a" (ret): "r" (ret)) -#define make_atomic_store_body(S) \ - asm volatile ("; xchg %0, %1;" : "+m" (*a), "+r" (v)) -#endif - -/* TODO test on intel whether the below helps. on AMD it makes no difference */ -//#define LF_BACKOFF ({asm volatile ("rep; nop"); 1; }) - |