diff options
Diffstat (limited to 'storage/innodb_plugin/include/os0sync.h')
| -rw-r--r-- | storage/innodb_plugin/include/os0sync.h | 81 |
1 files changed, 70 insertions, 11 deletions
diff --git a/storage/innodb_plugin/include/os0sync.h b/storage/innodb_plugin/include/os0sync.h index 0e0b32e7036..0c22162b900 100644 --- a/storage/innodb_plugin/include/os0sync.h +++ b/storage/innodb_plugin/include/os0sync.h @@ -285,44 +285,74 @@ os_fast_mutex_free( /**********************************************************//** Atomic compare-and-swap and increment for InnoDB. */ -#ifdef HAVE_GCC_ATOMIC_BUILTINS +#if defined(HAVE_IB_GCC_ATOMIC_BUILTINS) + +#define HAVE_ATOMIC_BUILTINS + /**********************************************************//** Returns true if swapped, ptr is pointer to target, old_val is value to compare to, new_val is the value to swap in. */ + # define os_compare_and_swap(ptr, old_val, new_val) \ __sync_bool_compare_and_swap(ptr, old_val, new_val) + # define os_compare_and_swap_ulint(ptr, old_val, new_val) \ os_compare_and_swap(ptr, old_val, new_val) + # define os_compare_and_swap_lint(ptr, old_val, new_val) \ os_compare_and_swap(ptr, old_val, new_val) -# define os_compare_and_swap_thread_id(ptr, old_val, new_val) \ + +# ifdef HAVE_IB_ATOMIC_PTHREAD_T_GCC +# define os_compare_and_swap_thread_id(ptr, old_val, new_val) \ os_compare_and_swap(ptr, old_val, new_val) +# define INNODB_RW_LOCKS_USE_ATOMICS +# define IB_ATOMICS_STARTUP_MSG \ + "Mutexes and rw_locks use GCC atomic builtins" +# else /* HAVE_IB_ATOMIC_PTHREAD_T_GCC */ +# define IB_ATOMICS_STARTUP_MSG \ + "Mutexes use GCC atomic builtins, rw_locks do not" +# endif /* HAVE_IB_ATOMIC_PTHREAD_T_GCC */ + /**********************************************************//** Returns the resulting value, ptr is pointer to target, amount is the amount of increment. */ + # define os_atomic_increment(ptr, amount) \ __sync_add_and_fetch(ptr, amount) + # define os_atomic_increment_lint(ptr, amount) \ os_atomic_increment(ptr, amount) + # define os_atomic_increment_ulint(ptr, amount) \ os_atomic_increment(ptr, amount) + /**********************************************************//** Returns the old value of *ptr, atomically sets *ptr to new_val */ + # define os_atomic_test_and_set_byte(ptr, new_val) \ __sync_lock_test_and_set(ptr, new_val) + +#elif defined(HAVE_IB_SOLARIS_ATOMICS) + +#define HAVE_ATOMIC_BUILTINS + /* If not compiling with GCC or GCC doesn't support the atomic intrinsics and running on Solaris >= 10 use Solaris atomics */ -#elif defined(HAVE_SOLARIS_ATOMICS) + #include <atomic.h> + /**********************************************************//** Returns true if swapped, ptr is pointer to target, old_val is value to compare to, new_val is the value to swap in. */ + # define os_compare_and_swap_ulint(ptr, old_val, new_val) \ (atomic_cas_ulong(ptr, old_val, new_val) == old_val) + # define os_compare_and_swap_lint(ptr, old_val, new_val) \ ((lint)atomic_cas_ulong((ulong_t*) ptr, old_val, new_val) == old_val) -# ifdef INNODB_RW_LOCKS_USE_ATOMICS -# if SIZEOF_PTHREAD_T == 4 + +# ifdef HAVE_IB_ATOMIC_PTHREAD_T_SOLARIS +# if SIZEOF_PTHREAD_T == 4 # define os_compare_and_swap_thread_id(ptr, old_val, new_val) \ ((pthread_t)atomic_cas_32(ptr, old_val, new_val) == old_val) # elif SIZEOF_PTHREAD_T == 8 @@ -331,21 +361,35 @@ compare to, new_val is the value to swap in. */ # else # error "SIZEOF_PTHREAD_T != 4 or 8" # endif /* SIZEOF_PTHREAD_T CHECK */ -# endif /* INNODB_RW_LOCKS_USE_ATOMICS */ +# define INNODB_RW_LOCKS_USE_ATOMICS +# define IB_ATOMICS_STARTUP_MSG \ + "Mutexes and rw_locks use Solaris atomic functions" +# else /* HAVE_IB_ATOMIC_PTHREAD_T_SOLARIS */ +# define IB_ATOMICS_STARTUP_MSG \ + "Mutexes use Solaris atomic functions, rw_locks do not" +# endif /* HAVE_IB_ATOMIC_PTHREAD_T_SOLARIS */ /**********************************************************//** Returns the resulting value, ptr is pointer to target, amount is the amount of increment. */ + # define os_atomic_increment_lint(ptr, amount) \ atomic_add_long_nv((ulong_t*) ptr, amount) + # define os_atomic_increment_ulint(ptr, amount) \ atomic_add_long_nv(ptr, amount) + /**********************************************************//** Returns the old value of *ptr, atomically sets *ptr to new_val */ + # define os_atomic_test_and_set_byte(ptr, new_val) \ atomic_swap_uchar(ptr, new_val) -/* On Windows, use Windows atomics / interlocked */ + #elif defined(HAVE_WINDOWS_ATOMICS) + +#define HAVE_ATOMIC_BUILTINS + +/* On Windows, use Windows atomics / interlocked */ # ifdef _WIN64 # define win_cmp_and_xchg InterlockedCompareExchange64 # define win_xchg_and_add InterlockedExchangeAdd64 @@ -353,31 +397,46 @@ Returns the old value of *ptr, atomically sets *ptr to new_val */ # define win_cmp_and_xchg InterlockedCompareExchange # define win_xchg_and_add InterlockedExchangeAdd # endif + /**********************************************************//** Returns true if swapped, ptr is pointer to target, old_val is value to compare to, new_val is the value to swap in. */ + # define os_compare_and_swap_ulint(ptr, old_val, new_val) \ (win_cmp_and_xchg(ptr, new_val, old_val) == old_val) + # define os_compare_and_swap_lint(ptr, old_val, new_val) \ (win_cmp_and_xchg(ptr, new_val, old_val) == old_val) -# ifdef INNODB_RW_LOCKS_USE_ATOMICS -# define os_compare_and_swap_thread_id(ptr, old_val, new_val) \ + +/* windows thread objects can always be passed to windows atomic functions */ +# define os_compare_and_swap_thread_id(ptr, old_val, new_val) \ (InterlockedCompareExchange(ptr, new_val, old_val) == old_val) -# endif /* INNODB_RW_LOCKS_USE_ATOMICS */ +# define INNODB_RW_LOCKS_USE_ATOMICS +# define IB_ATOMICS_STARTUP_MSG \ + "Mutexes and rw_locks use Windows interlocked functions" + /**********************************************************//** Returns the resulting value, ptr is pointer to target, amount is the amount of increment. */ + # define os_atomic_increment_lint(ptr, amount) \ (win_xchg_and_add(ptr, amount) + amount) + # define os_atomic_increment_ulint(ptr, amount) \ ((ulint) (win_xchg_and_add(ptr, amount) + amount)) + /**********************************************************//** Returns the old value of *ptr, atomically sets *ptr to new_val. InterlockedExchange() operates on LONG, and the LONG will be clobbered */ + # define os_atomic_test_and_set_byte(ptr, new_val) \ ((byte) InterlockedExchange(ptr, new_val)) -#endif /* HAVE_GCC_ATOMIC_BUILTINS */ + +#else +# define IB_ATOMICS_STARTUP_MSG \ + "Mutexes and rw_locks use InnoDB's own implementation" +#endif #ifndef UNIV_NONINL #include "os0sync.ic" |