mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-05 15:21:43 +00:00
319 lines
5.5 KiB
C++
319 lines
5.5 KiB
C++
#ifndef _ATOMIC_H
|
|
#define _ATOMIC_H
|
|
|
|
#include <stdint.h>
|
|
|
|
#include "atomic_arch.h"
|
|
|
|
#ifdef a_ll
|
|
|
|
#ifndef a_pre_llsc
|
|
#define a_pre_llsc()
|
|
#endif
|
|
|
|
#ifndef a_post_llsc
|
|
#define a_post_llsc()
|
|
#endif
|
|
|
|
#ifndef a_cas
|
|
#define a_cas a_cas
|
|
static inline int a_cas(volatile int *p, int t, int s)
|
|
{
|
|
int old;
|
|
a_pre_llsc();
|
|
do old = a_ll(p);
|
|
while (old==t && !a_sc(p, s));
|
|
a_post_llsc();
|
|
return old;
|
|
}
|
|
#endif
|
|
|
|
#ifndef a_swap
|
|
#define a_swap a_swap
|
|
static inline int a_swap(volatile int *p, int v)
|
|
{
|
|
int old;
|
|
a_pre_llsc();
|
|
do old = a_ll(p);
|
|
while (!a_sc(p, v));
|
|
a_post_llsc();
|
|
return old;
|
|
}
|
|
#endif
|
|
|
|
#ifndef a_fetch_add
|
|
#define a_fetch_add a_fetch_add
|
|
static inline int a_fetch_add(volatile int *p, int v)
|
|
{
|
|
int old;
|
|
a_pre_llsc();
|
|
do old = a_ll(p);
|
|
while (!a_sc(p, (unsigned)old + v));
|
|
a_post_llsc();
|
|
return old;
|
|
}
|
|
#endif
|
|
|
|
#ifndef a_fetch_and
|
|
#define a_fetch_and a_fetch_and
|
|
static inline int a_fetch_and(volatile int *p, int v)
|
|
{
|
|
int old;
|
|
a_pre_llsc();
|
|
do old = a_ll(p);
|
|
while (!a_sc(p, old & v));
|
|
a_post_llsc();
|
|
return old;
|
|
}
|
|
#endif
|
|
|
|
#ifndef a_fetch_or
|
|
#define a_fetch_or a_fetch_or
|
|
static inline int a_fetch_or(volatile int *p, int v)
|
|
{
|
|
int old;
|
|
a_pre_llsc();
|
|
do old = a_ll(p);
|
|
while (!a_sc(p, old | v));
|
|
a_post_llsc();
|
|
return old;
|
|
}
|
|
#endif
|
|
|
|
#endif
|
|
|
|
#ifdef a_ll_p
|
|
|
|
#ifndef a_cas_p
|
|
#define a_cas_p a_cas_p
|
|
static inline void *a_cas_p(volatile void *p, void *t, void *s)
|
|
{
|
|
void *old;
|
|
a_pre_llsc();
|
|
do old = a_ll_p(p);
|
|
while (old==t && !a_sc_p(p, s));
|
|
a_post_llsc();
|
|
return old;
|
|
}
|
|
#endif
|
|
|
|
#endif
|
|
|
|
#ifndef a_cas
|
|
#error missing definition of a_cas
|
|
#endif
|
|
|
|
#ifndef a_swap
|
|
#define a_swap a_swap
|
|
static inline int a_swap(volatile int *p, int v)
|
|
{
|
|
int old;
|
|
do old = *p;
|
|
while (a_cas(p, old, v) != old);
|
|
return old;
|
|
}
|
|
#endif
|
|
|
|
#ifndef a_fetch_add
|
|
#define a_fetch_add a_fetch_add
|
|
static inline int a_fetch_add(volatile int *p, int v)
|
|
{
|
|
int old;
|
|
do old = *p;
|
|
while (a_cas(p, old, (unsigned)old+v) != old);
|
|
return old;
|
|
}
|
|
#endif
|
|
|
|
#ifndef a_fetch_and
|
|
#define a_fetch_and a_fetch_and
|
|
static inline int a_fetch_and(volatile int *p, int v)
|
|
{
|
|
int old;
|
|
do old = *p;
|
|
while (a_cas(p, old, old&v) != old);
|
|
return old;
|
|
}
|
|
#endif
|
|
#ifndef a_fetch_or
|
|
#define a_fetch_or a_fetch_or
|
|
static inline int a_fetch_or(volatile int *p, int v)
|
|
{
|
|
int old;
|
|
do old = *p;
|
|
while (a_cas(p, old, old|v) != old);
|
|
return old;
|
|
}
|
|
#endif
|
|
|
|
#ifndef a_and
|
|
#define a_and a_and
|
|
static inline void a_and(volatile int *p, int v)
|
|
{
|
|
a_fetch_and(p, v);
|
|
}
|
|
#endif
|
|
|
|
#ifndef a_or
|
|
#define a_or a_or
|
|
static inline void a_or(volatile int *p, int v)
|
|
{
|
|
a_fetch_or(p, v);
|
|
}
|
|
#endif
|
|
|
|
#ifndef a_inc
|
|
#define a_inc a_inc
|
|
static inline void a_inc(volatile int *p)
|
|
{
|
|
a_fetch_add(p, 1);
|
|
}
|
|
#endif
|
|
|
|
#ifndef a_dec
|
|
#define a_dec a_dec
|
|
static inline void a_dec(volatile int *p)
|
|
{
|
|
a_fetch_add(p, -1);
|
|
}
|
|
#endif
|
|
|
|
#ifndef a_store
|
|
#define a_store a_store
|
|
static inline void a_store(volatile int *p, int v)
|
|
{
|
|
#ifdef a_barrier
|
|
a_barrier();
|
|
*p = v;
|
|
a_barrier();
|
|
#else
|
|
a_swap(p, v);
|
|
#endif
|
|
}
|
|
#endif
|
|
|
|
#ifndef a_barrier
|
|
#define a_barrier a_barrier
|
|
static void a_barrier()
|
|
{
|
|
volatile int tmp = 0;
|
|
a_cas(&tmp, 0, 0);
|
|
}
|
|
#endif
|
|
|
|
#ifndef a_spin
|
|
#define a_spin a_barrier
|
|
#endif
|
|
|
|
#ifndef a_and_64
|
|
#define a_and_64 a_and_64
|
|
static inline void a_and_64(volatile uint64_t *p, uint64_t v)
|
|
{
|
|
union { uint64_t v; uint32_t r[2]; } u = { v };
|
|
if (u.r[0]+1) a_and((int *)p, u.r[0]);
|
|
if (u.r[1]+1) a_and((int *)p+1, u.r[1]);
|
|
}
|
|
#endif
|
|
|
|
#ifndef a_or_64
|
|
#define a_or_64 a_or_64
|
|
static inline void a_or_64(volatile uint64_t *p, uint64_t v)
|
|
{
|
|
union { uint64_t v; uint32_t r[2]; } u = { v };
|
|
if (u.r[0]) a_or((int *)p, u.r[0]);
|
|
if (u.r[1]) a_or((int *)p+1, u.r[1]);
|
|
}
|
|
#endif
|
|
|
|
#ifndef a_cas_p
|
|
typedef char a_cas_p_undefined_but_pointer_not_32bit[-sizeof(char) == 0xffffffff ? 1 : -1];
|
|
#define a_cas_p a_cas_p
|
|
static inline void *a_cas_p(volatile void *p, void *t, void *s)
|
|
{
|
|
return (void *)a_cas((volatile int *)p, (int)t, (int)s);
|
|
}
|
|
#endif
|
|
|
|
#ifndef a_or_l
|
|
#define a_or_l a_or_l
|
|
static inline void a_or_l(volatile void *p, long v)
|
|
{
|
|
if (sizeof(long) == sizeof(int)) a_or(p, v);
|
|
else a_or_64(p, v);
|
|
}
|
|
#endif
|
|
|
|
#ifndef a_crash
|
|
#define a_crash a_crash
|
|
static inline void a_crash()
|
|
{
|
|
*(volatile char *)0=0;
|
|
}
|
|
#endif
|
|
|
|
#ifndef a_ctz_32
|
|
#define a_ctz_32 a_ctz_32
|
|
static inline int a_ctz_32(uint32_t x)
|
|
{
|
|
#ifdef a_clz_32
|
|
return 31-a_clz_32(x&-x);
|
|
#else
|
|
static const char debruijn32[32] = {
|
|
0, 1, 23, 2, 29, 24, 19, 3, 30, 27, 25, 11, 20, 8, 4, 13,
|
|
31, 22, 28, 18, 26, 10, 7, 12, 21, 17, 9, 6, 16, 5, 15, 14
|
|
};
|
|
return debruijn32[(x&-x)*0x076be629 >> 27];
|
|
#endif
|
|
}
|
|
#endif
|
|
|
|
#ifndef a_ctz_64
|
|
#define a_ctz_64 a_ctz_64
|
|
static inline int a_ctz_64(uint64_t x)
|
|
{
|
|
static const char debruijn64[64] = {
|
|
0, 1, 2, 53, 3, 7, 54, 27, 4, 38, 41, 8, 34, 55, 48, 28,
|
|
62, 5, 39, 46, 44, 42, 22, 9, 24, 35, 59, 56, 49, 18, 29, 11,
|
|
63, 52, 6, 26, 37, 40, 33, 47, 61, 45, 43, 21, 23, 58, 17, 10,
|
|
51, 25, 36, 32, 60, 20, 57, 16, 50, 31, 19, 15, 30, 14, 13, 12
|
|
};
|
|
if (sizeof(long) < 8) {
|
|
uint32_t y = x;
|
|
if (!y) {
|
|
y = x>>32;
|
|
return 32 + a_ctz_32(y);
|
|
}
|
|
return a_ctz_32(y);
|
|
}
|
|
return debruijn64[(x&-x)*0x022fdd63cc95386dull >> 58];
|
|
}
|
|
#endif
|
|
|
|
static inline int a_ctz_l(unsigned long x)
|
|
{
|
|
return (sizeof(long) < 8) ? a_ctz_32(x) : a_ctz_64(x);
|
|
}
|
|
|
|
#ifndef a_clz_64
|
|
#define a_clz_64 a_clz_64
|
|
static inline int a_clz_64(uint64_t x)
|
|
{
|
|
#ifdef a_clz_32
|
|
if (x>>32)
|
|
return a_clz_32(x>>32);
|
|
return a_clz_32(x) + 32;
|
|
#else
|
|
uint32_t y;
|
|
int r;
|
|
if (x>>32) y=x>>32, r=0; else y=x, r=32;
|
|
if (y>>16) y>>=16; else r |= 16;
|
|
if (y>>8) y>>=8; else r |= 8;
|
|
if (y>>4) y>>=4; else r |= 4;
|
|
if (y>>2) y>>=2; else r |= 2;
|
|
return r | !(y>>1);
|
|
#endif
|
|
}
|
|
#endif
|
|
|
|
#endif
|