FM / internal

/opt/imh/python3.13/include/python3.13/internal/

/opt/imh/python3.13/include/python3.13/internal

Name	Size	Mode	Actions
mimalloc/	-	0755	rm
pycore_abstract.h	1915	0644	edit dl rm
pycore_asdl.h	3035	0644	edit dl rm
pycore_ast.h	31520	0644	edit dl rm
pycore_ast_state.h	6779	0644	edit dl rm
pycore_atexit.h	1433	0644	edit dl rm
pycore_backoff.h	3902	0644	edit dl rm
pycore_bitutils.h	6026	0644	edit dl rm
pycore_blocks_output_buffer.h	8772	0644	edit dl rm
pycore_brc.h	2102	0644	edit dl rm
pycore_bytesobject.h	5099	0644	edit dl rm
pycore_bytes_methods.h	3933	0644	edit dl rm
pycore_call.h	6135	0644	edit dl rm
pycore_capsule.h	397	0644	edit dl rm
pycore_cell.h	1057	0644	edit dl rm
pycore_ceval.h	11162	0644	edit dl rm
pycore_ceval_state.h	3921	0644	edit dl rm
pycore_code.h	19864	0644	edit dl rm
pycore_codecs.h	2465	0644	edit dl rm
pycore_compile.h	3750	0644	edit dl rm
pycore_complexobject.h	588	0644	edit dl rm
pycore_condvar.h	2704	0644	edit dl rm
pycore_context.h	1182	0644	edit dl rm
pycore_critical_section.h	7968	0644	edit dl rm
pycore_crossinterp.h	12128	0644	edit dl rm
pycore_descrobject.h	543	0644	edit dl rm
pycore_dict.h	12264	0644	edit dl rm
pycore_dict_state.h	732	0644	edit dl rm
pycore_dtoa.h	1727	0644	edit dl rm
pycore_emscripten_signal.h	685	0644	edit dl rm
pycore_emscripten_trampoline.h	3180	0644	edit dl rm
pycore_exceptions.h	900	0644	edit dl rm
pycore_faulthandler.h	2245	0644	edit dl rm
pycore_fileutils.h	9468	0644	edit dl rm
pycore_fileutils_windows.h	2713	0644	edit dl rm
pycore_floatobject.h	1495	0644	edit dl rm
pycore_flowgraph.h	1489	0644	edit dl rm
pycore_format.h	480	0644	edit dl rm
pycore_frame.h	10875	0644	edit dl rm
pycore_freelist.h	4810	0644	edit dl rm
pycore_function.h	1538	0644	edit dl rm
pycore_gc.h	12967	0644	edit dl rm
pycore_genobject.h	859	0644	edit dl rm
pycore_getopt.h	490	0644	edit dl rm
pycore_gil.h	2196	0644	edit dl rm
pycore_global_objects.h	3090	0644	edit dl rm
pycore_global_objects_fini_generated.h	117804	0644	edit dl rm
pycore_global_strings.h	26706	0644	edit dl rm
pycore_hamt.h	3742	0644	edit dl rm
pycore_hashtable.h	4361	0644	edit dl rm
pycore_identifier.h	515	0644	edit dl rm
pycore_import.h	7731	0644	edit dl rm
pycore_importdl.h	4055	0644	edit dl rm
pycore_initconfig.h	6375	0644	edit dl rm
pycore_instruction_sequence.h	2161	0644	edit dl rm
pycore_instruments.h	2331	0644	edit dl rm
pycore_interp.h	15063	0644	edit dl rm
pycore_intrinsics.h	1756	0644	edit dl rm
pycore_jit.h	527	0644	edit dl rm
pycore_list.h	1859	0644	edit dl rm
pycore_llist.h	2420	0644	edit dl rm
pycore_lock.h	8538	0644	edit dl rm
pycore_long.h	9966	0644	edit dl rm
pycore_memoryobject.h	427	0644	edit dl rm
pycore_mimalloc.h	1637	0644	edit dl rm
pycore_modsupport.h	3351	0644	edit dl rm
pycore_moduleobject.h	1572	0644	edit dl rm
pycore_namespace.h	435	0644	edit dl rm
pycore_object.h	27936	0644	edit dl rm
pycore_object_alloc.h	2176	0644	edit dl rm
pycore_object_stack.h	2384	0644	edit dl rm
pycore_object_state.h	942	0644	edit dl rm
pycore_obmalloc.h	27418	0644	edit dl rm
pycore_obmalloc_init.h	1935	0644	edit dl rm
pycore_opcode_metadata.h	84722	0644	edit dl rm
pycore_opcode_utils.h	2122	0644	edit dl rm
pycore_optimizer.h	8303	0644	edit dl rm
pycore_parking_lot.h	3351	0644	edit dl rm
pycore_parser.h	2089	0644	edit dl rm
pycore_pathconfig.h	658	0644	edit dl rm
pycore_pyarena.h	2862	0644	edit dl rm
pycore_pyatomic_ft_wrappers.h	8056	0644	edit dl rm
pycore_pybuffer.h	510	0644	edit dl rm
pycore_pyerrors.h	4960	0644	edit dl rm
pycore_pyhash.h	2813	0644	edit dl rm
pycore_pylifecycle.h	4465	0644	edit dl rm
pycore_pymath.h	8600	0644	edit dl rm
pycore_pymem.h	4485	0644	edit dl rm
pycore_pymem_init.h	3520	0644	edit dl rm
pycore_pystate.h	9964	0644	edit dl rm
pycore_pystats.h	420	0644	edit dl rm
pycore_pythonrun.h	758	0644	edit dl rm
pycore_pythread.h	5431	0644	edit dl rm
pycore_qsbr.h	5524	0644	edit dl rm
pycore_range.h	346	0644	edit dl rm
pycore_runtime.h	13165	0644	edit dl rm
pycore_runtime_init.h	13045	0644	edit dl rm
pycore_runtime_init_generated.h	46820	0644	edit dl rm
pycore_semaphore.h	1731	0644	edit dl rm
pycore_setobject.h	951	0644	edit dl rm
pycore_signal.h	2931	0644	edit dl rm
pycore_sliceobject.h	369	0644	edit dl rm
pycore_stackref.h	5186	0644	edit dl rm
pycore_strhex.h	1013	0644	edit dl rm
pycore_structseq.h	963	0644	edit dl rm
pycore_symtable.h	8671	0644	edit dl rm
pycore_sysmodule.h	1177	0644	edit dl rm
pycore_time.h	11794	0644	edit dl rm
pycore_token.h	3001	0644	edit dl rm
pycore_traceback.h	3629	0644	edit dl rm
pycore_tracemalloc.h	4533	0644	edit dl rm
pycore_tstate.h	1354	0644	edit dl rm
pycore_tuple.h	820	0644	edit dl rm
pycore_typeobject.h	8877	0644	edit dl rm
pycore_typevarobject.h	924	0644	edit dl rm
pycore_ucnhash.h	958	0644	edit dl rm
pycore_unicodeobject.h	13270	0644	edit dl rm
pycore_unicodeobject_generated.h	132140	0644	edit dl rm
pycore_unionobject.h	742	0644	edit dl rm
pycore_uop_ids.h	10267	0644	edit dl rm
pycore_uop_metadata.h	39469	0644	edit dl rm
pycore_warnings.h	840	0644	edit dl rm
pycore_weakref.h	3889	0644	edit dl rm

Edit: /opt/imh/python3.13/include/python3.13/internal/pycore_backoff.h (3902B)

#ifndef Py_INTERNAL_BACKOFF_H
#define Py_INTERNAL_BACKOFF_H
#ifdef __cplusplus
extern "C" {
#endif

#ifndef Py_BUILD_CORE
#  error "this header requires Py_BUILD_CORE define"
#endif

#include <assert.h>
#include <stdbool.h>
#include <stdint.h>

typedef struct {
    union {
        struct {
            uint16_t backoff : 4;
            uint16_t value : 12;
        };
        uint16_t as_counter;  // For printf("%#x", ...)
    };
} _Py_BackoffCounter;

/* 16-bit countdown counters using exponential backoff.

These are used by the adaptive specializer to count down until
   it is time to specialize an instruction. If specialization fails
   the counter is reset using exponential backoff.

Another use is for the Tier 2 optimizer to decide when to create
   a new Tier 2 trace (executor). Again, exponential backoff is used.

The 16-bit counter is structured as a 12-bit unsigned 'value'
   and a 4-bit 'backoff' field. When resetting the counter, the
   backoff field is incremented (until it reaches a limit) and the
   value is set to a bit mask representing the value 2**backoff - 1.
   The maximum backoff is 12 (the number of value bits).

There is an exceptional value which must not be updated, 0xFFFF.
*/

#define UNREACHABLE_BACKOFF 0xFFFF

static inline bool
is_unreachable_backoff_counter(_Py_BackoffCounter counter)
{
    return counter.as_counter == UNREACHABLE_BACKOFF;
}

static inline _Py_BackoffCounter
make_backoff_counter(uint16_t value, uint16_t backoff)
{
    assert(backoff <= 15);
    assert(value <= 0xFFF);
    _Py_BackoffCounter result;
    result.value = value;
    result.backoff = backoff;
    return result;
}

static inline _Py_BackoffCounter
forge_backoff_counter(uint16_t counter)
{
    _Py_BackoffCounter result;
    result.as_counter = counter;
    return result;
}

static inline _Py_BackoffCounter
restart_backoff_counter(_Py_BackoffCounter counter)
{
    assert(!is_unreachable_backoff_counter(counter));
    if (counter.backoff < 12) {
        return make_backoff_counter((1 << (counter.backoff + 1)) - 1, counter.backoff + 1);
    }
    else {
        return make_backoff_counter((1 << 12) - 1, 12);
    }
}

static inline _Py_BackoffCounter
pause_backoff_counter(_Py_BackoffCounter counter)
{
    return make_backoff_counter(counter.value | 1, counter.backoff);
}

static inline _Py_BackoffCounter
advance_backoff_counter(_Py_BackoffCounter counter)
{
    if (!is_unreachable_backoff_counter(counter)) {
        return make_backoff_counter((counter.value - 1) & 0xFFF, counter.backoff);
    }
    else {
        return counter;
    }
}

static inline bool
backoff_counter_triggers(_Py_BackoffCounter counter)
{
    return counter.value == 0;
}

/* Initial JUMP_BACKWARD counter.
 * This determines when we create a trace for a loop.
* Backoff sequence 16, 32, 64, 128, 256, 512, 1024, 2048, 4096. */
#define JUMP_BACKWARD_INITIAL_VALUE 16
#define JUMP_BACKWARD_INITIAL_BACKOFF 4
static inline _Py_BackoffCounter
initial_jump_backoff_counter(void)
{
    return make_backoff_counter(JUMP_BACKWARD_INITIAL_VALUE,
                                JUMP_BACKWARD_INITIAL_BACKOFF);
}

/* Initial exit temperature.
 * Must be larger than ADAPTIVE_COOLDOWN_VALUE,
 * otherwise when a side exit warms up we may construct
 * a new trace before the Tier 1 code has properly re-specialized.
 * Backoff sequence 64, 128, 256, 512, 1024, 2048, 4096. */
#define COLD_EXIT_INITIAL_VALUE 64
#define COLD_EXIT_INITIAL_BACKOFF 6

static inline _Py_BackoffCounter
initial_temperature_backoff_counter(void)
{
    return make_backoff_counter(COLD_EXIT_INITIAL_VALUE,
                                COLD_EXIT_INITIAL_BACKOFF);
}

/* Unreachable backoff counter. */
static inline _Py_BackoffCounter
initial_unreachable_backoff_counter(void)
{
    return forge_backoff_counter(UNREACHABLE_BACKOFF);
}

#ifdef __cplusplus
}
#endif
#endif /* !Py_INTERNAL_BACKOFF_H */

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