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Macros | Functions
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_UNLOCKED_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 void pg_atomic_unlocked_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 149 of file generic.h.

◆ PG_HAVE_ATOMIC_INIT_U64

#define PG_HAVE_ATOMIC_INIT_U64

Definition at line 346 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 310 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_UNLOCKED_WRITE_U64

#define PG_HAVE_ATOMIC_UNLOCKED_WRITE_U64

Definition at line 301 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 268 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 151 of file generic.h.

152{
153 ptr->value = val_;
154}
fb
static int fb(int x)
Definition preproc-init.c:92

References fb(), and pg_atomic_uint32::value.

Referenced by pg_atomic_init_u32().

◆ pg_atomic_init_u64_impl()

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

Definition at line 348 of file generic.h.

349{
350 ptr->value = val_;
351}

References fb(), and 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.

47{
48 return ptr->value;
49}

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 328 of file generic.h.

329{
330 uint64 old = 0;
331
332 /*
333 * 64-bit reads aren't atomic on all platforms. In the generic
334 * implementation implement them as a compare/exchange with 0. That'll
335 * fail or succeed, but always return the old value. Possibly might store
336 * a 0, but only if the previous value also was a 0 - i.e. harmless.
337 */
338 pg_atomic_compare_exchange_u64_impl(ptr, &old, 0);
339
340 return old;
341}
pg_atomic_compare_exchange_u64_impl
bool pg_atomic_compare_exchange_u64_impl(volatile pg_atomic_uint64 *ptr, uint64 *expected, uint64 newval)
Definition atomics.c:34
uint64
uint64_t uint64
Definition c.h:547

References fb(), and 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.

65{
66 ptr->value = val;
67}
val
long val
Definition informix.c:689

References val, and pg_atomic_uint32::value.

Referenced by pg_atomic_unlocked_write_u32().

◆ pg_atomic_unlocked_write_u64_impl()

static void pg_atomic_unlocked_write_u64_impl ( volatile pg_atomic_uint64 *  ptr,
uint64  val 
)
inlinestatic

Definition at line 303 of file generic.h.

304{
305 ptr->value = val;
306}

References val, and pg_atomic_uint64::value.

Referenced by pg_atomic_unlocked_write_u64().

◆ 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.

56{
57 ptr->value = val;
58}

References val, and pg_atomic_uint32::value.

Referenced by pg_atomic_write_u32().

◆ pg_atomic_write_u64_impl()

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

Definition at line 288 of file generic.h.

289{
290 /*
291 * 64 bit writes aren't safe on all platforms. In the generic
292 * implementation implement them as an atomic exchange.
293 */
294 pg_atomic_exchange_u64_impl(ptr, val);
295}

References fb(), and val.

Referenced by pg_atomic_write_u64().