diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/Makefile.am | 2 | ||||
| -rw-r--r-- | include/atomic/gcc_builtins.h | 33 | ||||
| -rw-r--r-- | include/atomic/nolock.h | 7 | ||||
| -rw-r--r-- | include/my_bitmap.h | 16 | ||||
| -rw-r--r-- | include/my_sys.h | 5 |
5 files changed, 60 insertions, 3 deletions
diff --git a/include/Makefile.am b/include/Makefile.am index 400c6976e5b..2155571cd5a 100644 --- a/include/Makefile.am +++ b/include/Makefile.am @@ -36,7 +36,7 @@ noinst_HEADERS = config-win.h config-netware.h lf.h my_bit.h \ mysql_version.h.in my_handler.h my_time.h \ my_vle.h my_user.h my_atomic.h atomic/nolock.h \ atomic/rwlock.h atomic/x86-gcc.h atomic/generic-msvc.h \ - my_libwrap.h wqueue.h + atomic/gcc_builtins.h my_libwrap.h wqueue.h # Remove built files and the symlinked directories CLEANFILES = $(BUILT_SOURCES) readline openssl diff --git a/include/atomic/gcc_builtins.h b/include/atomic/gcc_builtins.h new file mode 100644 index 00000000000..509701b30a5 --- /dev/null +++ b/include/atomic/gcc_builtins.h @@ -0,0 +1,33 @@ +/* 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 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 +#else +#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/include/atomic/nolock.h b/include/atomic/nolock.h index 59497d34c11..cafd916981d 100644 --- a/include/atomic/nolock.h +++ b/include/atomic/nolock.h @@ -13,7 +13,8 @@ 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__) +#if defined(__i386__) || defined(_MSC_VER) || \ + defined(__x86_64__) || defined(HAVE_GCC_ATOMIC_BUILTINS) # ifdef MY_ATOMIC_MODE_DUMMY # define LOCK_prefix "" @@ -21,7 +22,9 @@ # define LOCK_prefix "lock" # endif -# ifdef __GNUC__ +# ifdef HAVE_GCC_ATOMIC_BUILTINS +# include "gcc_builtins.h" +# elif __GNUC__ # include "x86-gcc.h" # elif defined(_MSC_VER) # include "generic-msvc.h" diff --git a/include/my_bitmap.h b/include/my_bitmap.h index ab69b2d671d..78642df3362 100644 --- a/include/my_bitmap.h +++ b/include/my_bitmap.h @@ -159,6 +159,22 @@ static inline my_bool bitmap_cmp(const MY_BITMAP *map1, const MY_BITMAP *map2) #define bitmap_set_all(MAP) \ (memset((MAP)->bitmap, 0xFF, 4*no_words_in_map((MAP)))) +/** + check, set and clear a bit of interest of an integer. + + If the bit is out of range @retval -1. Otherwise + bit_is_set @return 0 or 1 reflecting the bit is set or not; + bit_do_set @return 1 (bit is set 1) + bit_do_clear @return 0 (bit is cleared to 0) +*/ + +#define bit_is_set(I,B) (sizeof(I) * CHAR_BIT > (B) ? \ + (((I) & (ULL(1) << (B))) == 0 ? 0 : 1) : -1) +#define bit_do_set(I,B) (sizeof(I) * CHAR_BIT > (B) ? \ + ((I) |= (ULL(1) << (B)), 1) : -1) +#define bit_do_clear(I,B) (sizeof(I) * CHAR_BIT > (B) ? \ + ((I) &= ~(ULL(1) << (B)), 0) : -1) + #ifdef __cplusplus } #endif diff --git a/include/my_sys.h b/include/my_sys.h index 363f3a12e64..0e670f4d965 100644 --- a/include/my_sys.h +++ b/include/my_sys.h @@ -539,6 +539,11 @@ typedef int (*qsort2_cmp)(const void *, const void *, const void *); #define my_b_tell(info) ((info)->pos_in_file + \ (size_t) (*(info)->current_pos - (info)->request_pos)) +#define my_b_get_buffer_start(info) (info)->request_pos +#define my_b_get_bytes_in_buffer(info) (char*) (info)->read_end - \ + (char*) my_b_get_buffer_start(info) +#define my_b_get_pos_in_file(info) (info)->pos_in_file + /* tell write offset in the SEQ_APPEND cache */ int my_b_copy_to_file(IO_CACHE *cache, FILE *file); my_off_t my_b_append_tell(IO_CACHE* info); |