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MDEV-13728 - Import MySQL 5.7 atomic operations for MSVC and Solaris

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gcc_sync.h, solaris.h, generic-msvc.h copied verbatim.
This commit is contained in:
Sergey Vojtovich
2017-09-04 15:40:21 +04:00
parent 62fb022110
commit 1029b22feb
6 changed files with 287 additions and 244 deletions
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112
include/my_atomic.h
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@@ -110,119 +110,13 @@
#include "atomic/generic-msvc.h"
#elif defined(HAVE_SOLARIS_ATOMIC)
#include "atomic/solaris.h"
#elif defined(HAVE_GCC_ATOMIC_BUILTINS) || defined(HAVE_GCC_C11_ATOMICS)
#elif defined(HAVE_GCC_C11_ATOMICS)
#include "atomic/gcc_builtins.h"
#elif defined(HAVE_GCC_ATOMIC_BUILTINS)
#include "atomic/gcc_sync.h"
#endif
#ifndef HAVE_GCC_C11_ATOMICS
#ifndef make_atomic_cas_body
/* nolock.h was not able to generate even a CAS function, fall back */
#error atomic ops for this platform are not implemented
#endif
#define intptr void *
/* define missing functions by using the already generated ones */
#ifndef make_atomic_add_body
#define make_atomic_add_body(S) \
int ## S tmp=*a; \
while (!my_atomic_cas ## S(a, &tmp, tmp+v)) ; \
v=tmp;
#endif
#ifndef make_atomic_fas_body
#define make_atomic_fas_body(S) \
int ## S tmp=*a; \
while (!my_atomic_cas ## S(a, &tmp, v)) ; \
v=tmp;
#endif
#ifndef make_atomic_load_body
#define make_atomic_load_body(S) \
ret= 0; /* avoid compiler warning */ \
(void)(my_atomic_cas ## S(a, &ret, ret));
#endif
#ifndef make_atomic_store_body
#define make_atomic_store_body(S) \
(void)(my_atomic_fas ## S (a, v));
#endif
#define make_atomic_cas(S) \
static inline int my_atomic_cas ## S(int ## S volatile *a, \
int ## S *cmp, int ## S set) \
{ \
int8 ret; \
make_atomic_cas_body(S); \
return ret; \
}
#define make_atomic_add(S) \
static inline int ## S my_atomic_add ## S( \
int ## S volatile *a, int ## S v) \
{ \
make_atomic_add_body(S); \
return v; \
}
#define make_atomic_fas(S) \
static inline int ## S my_atomic_fas ## S( \
int ## S volatile *a, int ## S v) \
{ \
make_atomic_fas_body(S); \
return v; \
}
#define make_atomic_load(S) \
static inline int ## S my_atomic_load ## S(int ## S volatile *a)\
{ \
int ## S ret; \
make_atomic_load_body(S); \
return ret; \
}
#define make_atomic_store(S) \
static inline void my_atomic_store ## S( \
int ## S volatile *a, int ## S v) \
{ \
make_atomic_store_body(S); \
}
make_atomic_cas(32)
make_atomic_cas(64)
make_atomic_cas(ptr)
make_atomic_add(32)
make_atomic_add(64)
make_atomic_load(32)
make_atomic_load(64)
make_atomic_load(ptr)
make_atomic_fas(32)
make_atomic_fas(64)
make_atomic_fas(ptr)
make_atomic_store(32)
make_atomic_store(64)
make_atomic_store(ptr)
#ifdef _atomic_h_cleanup_
#include _atomic_h_cleanup_
#undef _atomic_h_cleanup_
#endif
#undef make_atomic_add
#undef make_atomic_cas
#undef make_atomic_load
#undef make_atomic_store
#undef make_atomic_fas
#undef make_atomic_add_body
#undef make_atomic_cas_body
#undef make_atomic_load_body
#undef make_atomic_store_body
#undef make_atomic_fas_body
#undef intptr
#endif
/*
the macro below defines (as an expression) the code that
will be run in spin-loops. Intel manuals recummend to have PAUSE there.