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Backported my_atomic from 6.0-codebase and added support for 64-bit atomics to enable removal of LOCK_thread_count from every query, removed LOCK_thread_count from use in dispatch_command and close of query which is used in every query, now uses atomic increments/decrements instead

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This commit is contained in:
Mikael Ronstrom
2009-10-12 11:00:39 +02:00
parent a4785fc4a2
commit bae553cfcd
13 changed files with 337 additions and 167 deletions
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12
include/my_atomic.h
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@@ -37,7 +37,7 @@
my_atomic_store#(&var, what)
store 'what' in *var
'#' is substituted by a size suffix - 8, 16, 32, or ptr
'#' is substituted by a size suffix - 8, 16, 32, 64, or ptr
(e.g. my_atomic_add8, my_atomic_fas32, my_atomic_casptr).
NOTE This operations are not always atomic, so they always must be
@@ -129,6 +129,7 @@
make_transparent_unions(8)
make_transparent_unions(16)
make_transparent_unions(32)
make_transparent_unions(64)
make_transparent_unions(ptr)
#undef uintptr
#undef make_transparent_unions
@@ -140,10 +141,12 @@ make_transparent_unions(ptr)
#define U_8 int8
#define U_16 int16
#define U_32 int32
#define U_64 int64
#define U_ptr intptr
#define Uv_8 int8
#define Uv_16 int16
#define Uv_32 int32
#define Uv_64 int64
#define Uv_ptr intptr
#define U_a volatile *a
#define U_cmp *cmp
@@ -217,6 +220,7 @@ make_atomic_cas(8)
make_atomic_cas(16)
#endif
make_atomic_cas(32)
make_atomic_cas(64)
make_atomic_cas(ptr)
#ifdef MY_ATOMIC_HAS_8_16
@@ -224,12 +228,14 @@ make_atomic_add(8)
make_atomic_add(16)
#endif
make_atomic_add(32)
make_atomic_add(64)
#ifdef MY_ATOMIC_HAS_8_16
make_atomic_load(8)
make_atomic_load(16)
#endif
make_atomic_load(32)
make_atomic_load(64)
make_atomic_load(ptr)
#ifdef MY_ATOMIC_HAS_8_16
@@ -237,6 +243,7 @@ make_atomic_fas(8)
make_atomic_fas(16)
#endif
make_atomic_fas(32)
make_atomic_fas(64)
make_atomic_fas(ptr)
#ifdef MY_ATOMIC_HAS_8_16
@@ -244,6 +251,7 @@ make_atomic_store(8)
make_atomic_store(16)
#endif
make_atomic_store(32)
make_atomic_store(64)
make_atomic_store(ptr)
#ifdef _atomic_h_cleanup_
@@ -254,10 +262,12 @@ make_atomic_store(ptr)
#undef U_8
#undef U_16
#undef U_32
#undef U_64
#undef U_ptr
#undef Uv_8
#undef Uv_16
#undef Uv_32
#undef Uv_64
#undef Uv_ptr
#undef a
#undef cmp