generic.h File Reference

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Macros
#define	pg_read_barrier_impl   pg_memory_barrier_impl
#define	pg_write_barrier_impl   pg_memory_barrier_impl
#define	pg_spin_delay_impl()   ((void)0)
#define	PG_HAVE_ATOMIC_READ_U32
#define	PG_HAVE_ATOMIC_WRITE_U32
#define	PG_HAVE_ATOMIC_UNLOCKED_WRITE_U32
#define	PG_HAVE_ATOMIC_INIT_U32
#define	PG_HAVE_ATOMIC_WRITE_U64
#define	PG_HAVE_ATOMIC_READ_U64
#define	PG_HAVE_ATOMIC_INIT_U64

Functions
static uint32	pg_atomic_read_u32_impl (volatile pg_atomic_uint32 *ptr)
static void	pg_atomic_write_u32_impl (volatile pg_atomic_uint32 *ptr, uint32 val)
static void	pg_atomic_unlocked_write_u32_impl (volatile pg_atomic_uint32 *ptr, uint32 val)
static void	pg_atomic_init_u32_impl (volatile pg_atomic_uint32 *ptr, uint32 val_)
static void	pg_atomic_write_u64_impl (volatile pg_atomic_uint64 *ptr, uint64 val)
static uint64	pg_atomic_read_u64_impl (volatile pg_atomic_uint64 *ptr)
static void	pg_atomic_init_u64_impl (volatile pg_atomic_uint64 *ptr, uint64 val_)

Macro Definition Documentation

PG_HAVE_ATOMIC_INIT_U32

#define PG_HAVE_ATOMIC_INIT_U32

Definition at line 159 of file generic.h.

PG_HAVE_ATOMIC_INIT_U64

#define PG_HAVE_ATOMIC_INIT_U64

Definition at line 347 of file generic.h.

PG_HAVE_ATOMIC_READ_U32

#define PG_HAVE_ATOMIC_READ_U32

Definition at line 44 of file generic.h.

PG_HAVE_ATOMIC_READ_U64

#define PG_HAVE_ATOMIC_READ_U64

Definition at line 311 of file generic.h.

PG_HAVE_ATOMIC_UNLOCKED_WRITE_U32

#define PG_HAVE_ATOMIC_UNLOCKED_WRITE_U32

Definition at line 62 of file generic.h.

PG_HAVE_ATOMIC_WRITE_U32

#define PG_HAVE_ATOMIC_WRITE_U32

Definition at line 53 of file generic.h.

PG_HAVE_ATOMIC_WRITE_U64

#define PG_HAVE_ATOMIC_WRITE_U64

Definition at line 278 of file generic.h.

pg_read_barrier_impl

#define pg_read_barrier_impl   pg_memory_barrier_impl

Definition at line 25 of file generic.h.

pg_spin_delay_impl

#define pg_spin_delay_impl

(

)

((void)0)

Definition at line 33 of file generic.h.

pg_write_barrier_impl

#define pg_write_barrier_impl   pg_memory_barrier_impl

Definition at line 28 of file generic.h.

Function Documentation

pg_atomic_init_u32_impl()

static void pg_atomic_init_u32_impl ( volatile pg_atomic_uint32 *  ptr, uint32  val_  )

inlinestatic

Definition at line 161 of file generic.h.

{
    ptr->value = val_;
}

References pg_atomic_uint32::value.

pg_atomic_init_u64_impl()

static void pg_atomic_init_u64_impl ( volatile pg_atomic_uint64 *  ptr, uint64  val_  )

inlinestatic

Definition at line 349 of file generic.h.

{
    ptr->value = val_;
}

References pg_atomic_uint64::value.

pg_atomic_read_u32_impl()

static uint32 pg_atomic_read_u32_impl ( volatile pg_atomic_uint32 *  ptr )

inlinestatic

Definition at line 46 of file generic.h.

{
    return ptr->value;
}

References pg_atomic_uint32::value.

Referenced by pg_atomic_read_u32().

pg_atomic_read_u64_impl()

static uint64 pg_atomic_read_u64_impl ( volatile pg_atomic_uint64 *  ptr )

inlinestatic

Definition at line 329 of file generic.h.

{
    uint64 old = 0;
 
    /*
     * 64-bit reads aren't atomic on all platforms. In the generic
     * implementation implement them as a compare/exchange with 0. That'll
     * fail or succeed, but always return the old value. Possibly might store
     * a 0, but only if the previous value also was a 0 - i.e. harmless.
     */
    pg_atomic_compare_exchange_u64_impl(ptr, &old, 0);
 
    return old;
}

References pg_atomic_compare_exchange_u64_impl().

Referenced by pg_atomic_monotonic_advance_u64(), and pg_atomic_read_u64().

pg_atomic_unlocked_write_u32_impl()

static void pg_atomic_unlocked_write_u32_impl ( volatile pg_atomic_uint32 *  ptr, uint32  val  )

inlinestatic

Definition at line 64 of file generic.h.

{
    ptr->value = val;
}

References val, and pg_atomic_uint32::value.

Referenced by pg_atomic_unlocked_write_u32().

pg_atomic_write_u32_impl()

static void pg_atomic_write_u32_impl ( volatile pg_atomic_uint32 *  ptr, uint32  val  )

inlinestatic

Definition at line 55 of file generic.h.

{
    ptr->value = val;
}

References val, and pg_atomic_uint32::value.

pg_atomic_write_u64_impl()

static void pg_atomic_write_u64_impl ( volatile pg_atomic_uint64 *  ptr, uint64  val  )

inlinestatic

Definition at line 298 of file generic.h.

{
    /*
     * 64 bit writes aren't safe on all platforms. In the generic
     * implementation implement them as an atomic exchange.
     */
    pg_atomic_exchange_u64_impl(ptr, val);
}

References val.

Referenced by pg_atomic_write_u64().