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Name	Size	Permission	Date
Python-ast.h	20.36 KB	-rw-r--r--	2019-11-01 23:03
Python.h	2.84 KB	-rw-r--r--	2019-11-01 23:02
abstract.h	42.79 KB	-rw-r--r--	2019-11-01 23:02
accu.h	1016 B	-rw-r--r--	2019-11-01 23:02
asdl.h	1.16 KB	-rw-r--r--	2019-11-01 23:02
ast.h	477 B	-rw-r--r--	2019-11-01 23:02
bitset.h	792 B	-rw-r--r--	2019-11-01 23:02
bltinmodule.h	264 B	-rw-r--r--	2019-11-01 23:02
boolobject.h	886 B	-rw-r--r--	2019-11-01 23:02
bytearrayobject.h	2.06 KB	-rw-r--r--	2019-11-01 23:02
bytes_methods.h	1.99 KB	-rw-r--r--	2019-11-01 23:02
bytesobject.h	4.87 KB	-rw-r--r--	2019-11-01 23:02
cellobject.h	701 B	-rw-r--r--	2019-11-01 23:02
ceval.h	7.46 KB	-rw-r--r--	2019-11-01 23:02
classobject.h	1.63 KB	-rw-r--r--	2019-11-01 23:02
code.h	5.14 KB	-rw-r--r--	2019-11-01 23:02
codecs.h	6.54 KB	-rw-r--r--	2019-11-01 23:02
compile.h	2.11 KB	-rw-r--r--	2019-11-01 23:02
complexobject.h	1.76 KB	-rw-r--r--	2019-11-01 23:02
datetime.h	8.34 KB	-rw-r--r--	2019-11-01 23:02
descrobject.h	2.84 KB	-rw-r--r--	2019-11-01 23:02
dictobject.h	6.19 KB	-rw-r--r--	2019-11-01 23:02
dtoa.h	458 B	-rw-r--r--	2019-11-01 23:02
dynamic_annotations.h	21.94 KB	-rw-r--r--	2019-11-01 23:02
enumobject.h	253 B	-rw-r--r--	2019-11-01 23:02
errcode.h	1.46 KB	-rw-r--r--	2019-11-01 23:02
eval.h	597 B	-rw-r--r--	2019-11-01 23:02
fileobject.h	1.48 KB	-rw-r--r--	2019-11-01 23:02
fileutils.h	2.81 KB	-rw-r--r--	2019-11-01 23:02
floatobject.h	4.53 KB	-rw-r--r--	2019-11-01 23:02
frameobject.h	3.45 KB	-rw-r--r--	2019-11-01 23:02
funcobject.h	3.68 KB	-rw-r--r--	2019-11-01 23:02
genobject.h	2.61 KB	-rw-r--r--	2019-11-01 23:02
graminit.h	1.9 KB	-rw-r--r--	2019-11-01 23:02
grammar.h	2 KB	-rw-r--r--	2019-11-01 23:02
import.h	3.81 KB	-rw-r--r--	2019-11-01 23:02
intrcheck.h	460 B	-rw-r--r--	2019-11-01 23:02
iterobject.h	567 B	-rw-r--r--	2019-11-01 23:02
listobject.h	2.83 KB	-rw-r--r--	2019-11-01 23:02
longintrepr.h	3.9 KB	-rw-r--r--	2019-11-01 23:02
longobject.h	8.09 KB	-rw-r--r--	2019-11-01 23:02
marshal.h	803 B	-rw-r--r--	2019-11-01 23:02
memoryobject.h	2.63 KB	-rw-r--r--	2019-11-01 23:02
metagrammar.h	253 B	-rw-r--r--	2019-11-01 23:02
methodobject.h	3.29 KB	-rw-r--r--	2019-11-01 23:02
modsupport.h	5.91 KB	-rw-r--r--	2019-11-01 23:02
moduleobject.h	2.09 KB	-rw-r--r--	2019-11-01 23:02
namespaceobject.h	297 B	-rw-r--r--	2019-11-01 23:02
node.h	1007 B	-rw-r--r--	2019-11-01 23:02
object.h	39.07 KB	-rw-r--r--	2019-11-01 23:02
objimpl.h	13.65 KB	-rw-r--r--	2019-11-01 23:02
odictobject.h	1.3 KB	-rw-r--r--	2019-11-01 23:02
opcode.h	4.81 KB	-rw-r--r--	2019-11-01 23:02
osdefs.h	691 B	-rw-r--r--	2019-11-01 23:02
parsetok.h	2.82 KB	-rw-r--r--	2019-11-01 23:02
patchlevel.h	1.1 KB	-rw-r--r--	2019-11-01 23:02
pgen.h	253 B	-rw-r--r--	2019-11-01 23:02
pgenheaders.h	1.12 KB	-rw-r--r--	2019-11-01 23:02
py_curses.h	4.08 KB	-rw-r--r--	2019-11-01 23:02
pyarena.h	2.68 KB	-rw-r--r--	2019-11-01 23:02
pyatomic.h	7.94 KB	-rw-r--r--	2019-11-01 23:02
pycapsule.h	1.69 KB	-rw-r--r--	2019-11-01 23:02
pyconfig-64.h	42.8 KB	-rw-r--r--	2024-05-31 13:49
pyconfig.h	162 B	-rw-r--r--	2024-05-31 13:51
pyctype.h	1.29 KB	-rw-r--r--	2019-11-01 23:02
pydebug.h	1.11 KB	-rw-r--r--	2019-11-01 23:02
pyerrors.h	15.95 KB	-rw-r--r--	2019-11-01 23:02
pyexpat.h	2.39 KB	-rw-r--r--	2019-11-01 23:02
pyfpe.h	8.27 KB	-rw-r--r--	2019-11-01 23:02
pygetopt.h	388 B	-rw-r--r--	2019-11-01 23:02
pyhash.h	4.17 KB	-rw-r--r--	2019-11-01 23:02
pylifecycle.h	3.72 KB	-rw-r--r--	2019-11-01 23:02
pymacconfig.h	2.92 KB	-rw-r--r--	2019-11-01 23:02
pymacro.h	3.22 KB	-rw-r--r--	2019-11-01 23:02
pymath.h	7.05 KB	-rw-r--r--	2019-11-01 23:02
pymem.h	6.87 KB	-rw-r--r--	2019-11-01 23:02
pyport.h	31.27 KB	-rw-r--r--	2019-11-01 23:02
pystate.h	9.27 KB	-rw-r--r--	2019-11-01 23:02
pystrcmp.h	436 B	-rw-r--r--	2019-11-01 23:02
pystrhex.h	443 B	-rw-r--r--	2019-11-01 23:02
pystrtod.h	1.25 KB	-rw-r--r--	2019-11-01 23:02
pythonrun.h	6.53 KB	-rw-r--r--	2019-11-01 23:02
pythread.h	2.96 KB	-rw-r--r--	2019-11-01 23:02
pytime.h	6.5 KB	-rw-r--r--	2019-11-01 23:02
rangeobject.h	629 B	-rw-r--r--	2019-11-01 23:02
setobject.h	3.21 KB	-rw-r--r--	2019-11-01 23:02
sliceobject.h	2.43 KB	-rw-r--r--	2019-11-01 23:02
structmember.h	2.02 KB	-rw-r--r--	2019-11-01 23:02
structseq.h	1.32 KB	-rw-r--r--	2019-11-01 23:02
symtable.h	4.75 KB	-rw-r--r--	2019-11-01 23:02
sysmodule.h	1.32 KB	-rw-r--r--	2019-11-01 23:02
token.h	1.9 KB	-rw-r--r--	2019-11-01 23:02
traceback.h	2.16 KB	-rw-r--r--	2019-11-01 23:02
tupleobject.h	2.39 KB	-rw-r--r--	2019-11-01 23:02
typeslots.h	2.2 KB	-rw-r--r--	2019-11-01 23:02
ucnhash.h	1.03 KB	-rw-r--r--	2019-11-01 23:02
unicodeobject.h	77.34 KB	-rw-r--r--	2019-11-01 23:02
warnings.h	1.39 KB	-rw-r--r--	2019-11-01 23:02
weakrefobject.h	2.8 KB	-rw-r--r--	2019-11-01 23:02

Rename

#ifndef Py_ATOMIC_H
#define Py_ATOMIC_H
#ifdef Py_BUILD_CORE

#include "dynamic_annotations.h"

#include "pyconfig.h"

#if defined(HAVE_STD_ATOMIC)
#include <stdatomic.h>
#endif

/* This is modeled after the atomics interface from C1x, according to
 * the draft at
 * http://www.open-std.org/JTC1/SC22/wg14/www/docs/n1425.pdf.
 * Operations and types are named the same except with a _Py_ prefix
 * and have the same semantics.
 *
 * Beware, the implementations here are deep magic.
 */

#if defined(HAVE_STD_ATOMIC)

typedef enum _Py_memory_order {
    _Py_memory_order_relaxed = memory_order_relaxed,
    _Py_memory_order_acquire = memory_order_acquire,
    _Py_memory_order_release = memory_order_release,
    _Py_memory_order_acq_rel = memory_order_acq_rel,
    _Py_memory_order_seq_cst = memory_order_seq_cst
} _Py_memory_order;

typedef struct _Py_atomic_address {
    atomic_uintptr_t _value;
} _Py_atomic_address;

typedef struct _Py_atomic_int {
    atomic_int _value;
} _Py_atomic_int;

#define _Py_atomic_signal_fence(/*memory_order*/ ORDER) \
    atomic_signal_fence(ORDER)

#define _Py_atomic_thread_fence(/*memory_order*/ ORDER) \
    atomic_thread_fence(ORDER)

#define _Py_atomic_store_explicit(ATOMIC_VAL, NEW_VAL, ORDER) \
    atomic_store_explicit(&(ATOMIC_VAL)->_value, NEW_VAL, ORDER)

#define _Py_atomic_load_explicit(ATOMIC_VAL, ORDER) \
    atomic_load_explicit(&(ATOMIC_VAL)->_value, ORDER)

/* Use builtin atomic operations in GCC >= 4.7 */
#elif defined(HAVE_BUILTIN_ATOMIC)

typedef enum _Py_memory_order {
    _Py_memory_order_relaxed = __ATOMIC_RELAXED,
    _Py_memory_order_acquire = __ATOMIC_ACQUIRE,
    _Py_memory_order_release = __ATOMIC_RELEASE,
    _Py_memory_order_acq_rel = __ATOMIC_ACQ_REL,
    _Py_memory_order_seq_cst = __ATOMIC_SEQ_CST
} _Py_memory_order;

typedef struct _Py_atomic_address {
    Py_uintptr_t _value;
} _Py_atomic_address;

typedef struct _Py_atomic_int {
    int _value;
} _Py_atomic_int;

#define _Py_atomic_signal_fence(/*memory_order*/ ORDER) \
    __atomic_signal_fence(ORDER)

#define _Py_atomic_thread_fence(/*memory_order*/ ORDER) \
    __atomic_thread_fence(ORDER)

#define _Py_atomic_store_explicit(ATOMIC_VAL, NEW_VAL, ORDER) \
    (assert((ORDER) == __ATOMIC_RELAXED                       \
            || (ORDER) == __ATOMIC_SEQ_CST                    \
            || (ORDER) == __ATOMIC_RELEASE),                  \
     __atomic_store_n(&(ATOMIC_VAL)->_value, NEW_VAL, ORDER))

#define _Py_atomic_load_explicit(ATOMIC_VAL, ORDER)           \
    (assert((ORDER) == __ATOMIC_RELAXED                       \
            || (ORDER) == __ATOMIC_SEQ_CST                    \
            || (ORDER) == __ATOMIC_ACQUIRE                    \
            || (ORDER) == __ATOMIC_CONSUME),                  \
     __atomic_load_n(&(ATOMIC_VAL)->_value, ORDER))

#else

typedef enum _Py_memory_order {
    _Py_memory_order_relaxed,
    _Py_memory_order_acquire,
    _Py_memory_order_release,
    _Py_memory_order_acq_rel,
    _Py_memory_order_seq_cst
} _Py_memory_order;

typedef struct _Py_atomic_address {
    Py_uintptr_t _value;
} _Py_atomic_address;

typedef struct _Py_atomic_int {
    int _value;
} _Py_atomic_int;

/* Only support GCC (for expression statements) and x86 (for simple
 * atomic semantics) for now */
#if defined(__GNUC__) && (defined(__i386__) || defined(__amd64))

static __inline__ void
_Py_atomic_signal_fence(_Py_memory_order order)
{
    if (order != _Py_memory_order_relaxed)
        __asm__ volatile("":::"memory");
}

static __inline__ void
_Py_atomic_thread_fence(_Py_memory_order order)
{
    if (order != _Py_memory_order_relaxed)
        __asm__ volatile("mfence":::"memory");
}

/* Tell the race checker about this operation's effects. */
static __inline__ void
_Py_ANNOTATE_MEMORY_ORDER(const volatile void *address, _Py_memory_order order)
{
    (void)address;		/* shut up -Wunused-parameter */
    switch(order) {
    case _Py_memory_order_release:
    case _Py_memory_order_acq_rel:
    case _Py_memory_order_seq_cst:
        _Py_ANNOTATE_HAPPENS_BEFORE(address);
        break;
    case _Py_memory_order_relaxed:
    case _Py_memory_order_acquire:
        break;
    }
    switch(order) {
    case _Py_memory_order_acquire:
    case _Py_memory_order_acq_rel:
    case _Py_memory_order_seq_cst:
        _Py_ANNOTATE_HAPPENS_AFTER(address);
        break;
    case _Py_memory_order_relaxed:
    case _Py_memory_order_release:
        break;
    }
}

#define _Py_atomic_store_explicit(ATOMIC_VAL, NEW_VAL, ORDER) \
    __extension__ ({ \
        __typeof__(ATOMIC_VAL) atomic_val = ATOMIC_VAL; \
        __typeof__(atomic_val->_value) new_val = NEW_VAL;\
        volatile __typeof__(new_val) *volatile_data = &atomic_val->_value; \
        _Py_memory_order order = ORDER; \
        _Py_ANNOTATE_MEMORY_ORDER(atomic_val, order); \
        \
        /* Perform the operation. */ \
        _Py_ANNOTATE_IGNORE_WRITES_BEGIN(); \
        switch(order) { \
        case _Py_memory_order_release: \
            _Py_atomic_signal_fence(_Py_memory_order_release); \
            /* fallthrough */ \
        case _Py_memory_order_relaxed: \
            *volatile_data = new_val; \
            break; \
        \
        case _Py_memory_order_acquire: \
        case _Py_memory_order_acq_rel: \
        case _Py_memory_order_seq_cst: \
            __asm__ volatile("xchg %0, %1" \
                         : "+r"(new_val) \
                         : "m"(atomic_val->_value) \
                         : "memory"); \
            break; \
        } \
        _Py_ANNOTATE_IGNORE_WRITES_END(); \
    })

#define _Py_atomic_load_explicit(ATOMIC_VAL, ORDER) \
    __extension__ ({  \
        __typeof__(ATOMIC_VAL) atomic_val = ATOMIC_VAL; \
        __typeof__(atomic_val->_value) result; \
        volatile __typeof__(result) *volatile_data = &atomic_val->_value; \
        _Py_memory_order order = ORDER; \
        _Py_ANNOTATE_MEMORY_ORDER(atomic_val, order); \
        \
        /* Perform the operation. */ \
        _Py_ANNOTATE_IGNORE_READS_BEGIN(); \
        switch(order) { \
        case _Py_memory_order_release: \
        case _Py_memory_order_acq_rel: \
        case _Py_memory_order_seq_cst: \
            /* Loads on x86 are not releases by default, so need a */ \
            /* thread fence. */ \
            _Py_atomic_thread_fence(_Py_memory_order_release); \
            break; \
        default: \
            /* No fence */ \
            break; \
        } \
        result = *volatile_data; \
        switch(order) { \
        case _Py_memory_order_acquire: \
        case _Py_memory_order_acq_rel: \
        case _Py_memory_order_seq_cst: \
            /* Loads on x86 are automatically acquire operations so */ \
            /* can get by with just a compiler fence. */ \
            _Py_atomic_signal_fence(_Py_memory_order_acquire); \
            break; \
        default: \
            /* No fence */ \
            break; \
        } \
        _Py_ANNOTATE_IGNORE_READS_END(); \
        result; \
    })

#else  /* !gcc x86 */
/* Fall back to other compilers and processors by assuming that simple
   volatile accesses are atomic.  This is false, so people should port
   this. */
#define _Py_atomic_signal_fence(/*memory_order*/ ORDER) ((void)0)
#define _Py_atomic_thread_fence(/*memory_order*/ ORDER) ((void)0)
#define _Py_atomic_store_explicit(ATOMIC_VAL, NEW_VAL, ORDER) \
    ((ATOMIC_VAL)->_value = NEW_VAL)
#define _Py_atomic_load_explicit(ATOMIC_VAL, ORDER) \
    ((ATOMIC_VAL)->_value)

#endif  /* !gcc x86 */
#endif

/* Standardized shortcuts. */
#define _Py_atomic_store(ATOMIC_VAL, NEW_VAL) \
    _Py_atomic_store_explicit(ATOMIC_VAL, NEW_VAL, _Py_memory_order_seq_cst)
#define _Py_atomic_load(ATOMIC_VAL) \
    _Py_atomic_load_explicit(ATOMIC_VAL, _Py_memory_order_seq_cst)

/* Python-local extensions */

#define _Py_atomic_store_relaxed(ATOMIC_VAL, NEW_VAL) \
    _Py_atomic_store_explicit(ATOMIC_VAL, NEW_VAL, _Py_memory_order_relaxed)
#define _Py_atomic_load_relaxed(ATOMIC_VAL) \
    _Py_atomic_load_explicit(ATOMIC_VAL, _Py_memory_order_relaxed)

#endif  /* Py_BUILD_CORE */
#endif  /* Py_ATOMIC_H */