_ggml.py

"""Internal module use at your own risk

This module provides a minimal interface for working with ggml tensors from llama-cpp-python
"""
import ctypes
import enum
import os
import pathlib
from llama_cpp._ctypes_extensions import (
    _version_at_least,
    load_shared_library,
    ctypes_function_for_shared_library,
)

from typing import (
    Callable,
    Union,
    NewType,
    Optional,
    TYPE_CHECKING,
)

def _preload_openmp_runtime():
    """Preload bundled OpenMP runtime before loading ggml-base.

    This is required on Windows when CPU backends depend on the packaged
    OpenMP runtime DLL.
    """

    # Only Windows DLL loading requires this workaround.
    if os.name != "nt":
        return

    # Keep compatibility with older package versions.
    if not _version_at_least("0.3.39"):
        return

    # Some ComfyUI environments include complex software packages and may also contain
    # additional OpenMP libraries (such as `libiomp5md.dll`);
    # the best approach is to delete the conflicting libraries
    # (i.e., OpenMP dynamic libraries that are not the VC143 version).
    os.environ["KMP_DUPLICATE_LIB_OK"] = "TRUE"

    libomp_path = (pathlib.Path(__file__).parent / "lib" / "libomp140.x86_64.dll")

    if not libomp_path.exists():
        print(f"[llama-cpp-python] WARNING: bundled OpenMP runtime not found: {libomp_path}")
        return

    try:
        ctypes.CDLL(str(libomp_path), winmode=ctypes.RTLD_GLOBAL)
        print(f"[llama-cpp-python] loaded bundled OpenMP runtime: {libomp_path}")
    except Exception as e:
        print(
            "[llama-cpp-python] WARNING: failed to load bundled OpenMP runtime:\n"
            f"  path: {libomp_path}\n"
            f"  error: {e}"
        )

libggml_base_path = pathlib.Path(os.path.abspath(os.path.dirname(__file__)))
libggml_base_paths = [
    libggml_base_path / "lib",
    # libggml_base_path / "bin",  # The `bin` path is no longer used as a search path for dynamic ggml libraries.
]

# Load bundled OpenMP runtime before ggml-base on Windows.
_preload_openmp_runtime()

libggml_base = load_shared_library("ggml-base", libggml_base_paths)

ggml_base_function = ctypes_function_for_shared_library(libggml_base)

libggml = load_shared_library("ggml", libggml_base_paths)

ggml_function = ctypes_function_for_shared_library(libggml)

# // ====== ggml.h ======

GGML_FILE_MAGIC = 0x67676d6c # b"ggml"
GGML_FILE_VERSION = 2

GGML_QNT_VERSION = 2    # bump this on quantization format changes
GGML_QNT_VERSION_FACTOR = 1000 # do not change this

GGML_MAX_DIMS       =  4
GGML_MAX_PARAMS     =  2048
GGML_MAX_SRC        =  10
GGML_MAX_N_THREADS  =  512
GGML_MAX_OP_PARAMS  =  64

GGML_MAX_NAME = 64

GGML_DEFAULT_N_THREADS = 4
GGML_DEFAULT_GRAPH_SIZE = 2048

GGML_EXIT_SUCCESS = 0
GGML_EXIT_ABORTED = 1

# typedef struct ggml_threadpool * ggml_threadpool_t;
# Contexts borrow this opaque handle; the ggml CPU backend owns it.
ggml_threadpool_p = ctypes.c_void_p

GGML_ROPE_TYPE_NORMAL = 0
GGML_ROPE_TYPE_NEOX   = 2
GGML_ROPE_TYPE_MROPE  = 8
GGML_ROPE_TYPE_VISION = 24
GGML_ROPE_TYPE_IMROPE = 40 # binary: 101000

GGML_MROPE_SECTIONS = 4

# enum ggml_status {
#     GGML_STATUS_ALLOC_FAILED = -2,
#     GGML_STATUS_FAILED = -1,
#     GGML_STATUS_SUCCESS = 0,
#     GGML_STATUS_ABORTED = 1,
# };
class GGMLStatus(enum.IntEnum):
    GGML_STATUS_ALLOC_FAILED = -2
    GGML_STATUS_FAILED       = -1
    GGML_STATUS_SUCCESS      = 0
    GGML_STATUS_ABORTED      = 1


# // NOTE: always add types at the end of the enum to keep backward compatibility
# enum ggml_type {
#     GGML_TYPE_F32     = 0,
#     GGML_TYPE_F16     = 1,
#     GGML_TYPE_Q4_0    = 2,
#     GGML_TYPE_Q4_1    = 3,
#     // GGML_TYPE_Q4_2 = 4, support has been removed
#     // GGML_TYPE_Q4_3 = 5, support has been removed
#     GGML_TYPE_Q5_0    = 6,
#     GGML_TYPE_Q5_1    = 7,
#     GGML_TYPE_Q8_0    = 8,
#     GGML_TYPE_Q8_1    = 9,
#     GGML_TYPE_Q2_K    = 10,
#     GGML_TYPE_Q3_K    = 11,
#     GGML_TYPE_Q4_K    = 12,
#     GGML_TYPE_Q5_K    = 13,
#     GGML_TYPE_Q6_K    = 14,
#     GGML_TYPE_Q8_K    = 15,
#     GGML_TYPE_IQ2_XXS = 16,
#     GGML_TYPE_IQ2_XS  = 17,
#     GGML_TYPE_IQ3_XXS = 18,
#     GGML_TYPE_IQ1_S   = 19,
#     GGML_TYPE_IQ4_NL  = 20,
#     GGML_TYPE_IQ3_S   = 21,
#     GGML_TYPE_IQ2_S   = 22,
#     GGML_TYPE_IQ4_XS  = 23,
#     GGML_TYPE_I8      = 24,
#     GGML_TYPE_I16     = 25,
#     GGML_TYPE_I32     = 26,
#     GGML_TYPE_I64     = 27,
#     GGML_TYPE_F64     = 28,
#     GGML_TYPE_IQ1_M   = 29,
#     GGML_TYPE_BF16    = 30,
#     // GGML_TYPE_Q4_0_4_4 = 31, support has been removed from gguf files
#     // GGML_TYPE_Q4_0_4_8 = 32,
#     // GGML_TYPE_Q4_0_8_8 = 33,
#     GGML_TYPE_TQ1_0   = 34,
#     GGML_TYPE_TQ2_0   = 35,
#     // GGML_TYPE_IQ4_NL_4_4 = 36,
#     // GGML_TYPE_IQ4_NL_4_8 = 37,
#     // GGML_TYPE_IQ4_NL_8_8 = 38,
#     GGML_TYPE_MXFP4   = 39, // MXFP4 (1 block)
#     GGML_TYPE_NVFP4   = 40, // NVFP4 (4 blocks, E4M3 scale)
#     GGML_TYPE_Q1_0    = 41,
#     GGML_TYPE_Q2_0    = 42,
#     GGML_TYPE_F8_E4M3 = 43,
#     GGML_TYPE_COUNT   = 44,
# };
class GGMLType(enum.IntEnum):
    GGML_TYPE_F32  = 0
    GGML_TYPE_F16  = 1
    GGML_TYPE_Q4_0 = 2
    GGML_TYPE_Q4_1 = 3
    GGML_TYPE_Q5_0 = 6
    GGML_TYPE_Q5_1 = 7
    GGML_TYPE_Q8_0 = 8
    GGML_TYPE_Q8_1 = 9
    GGML_TYPE_Q2_K = 10
    GGML_TYPE_Q3_K = 11
    GGML_TYPE_Q4_K = 12
    GGML_TYPE_Q5_K = 13
    GGML_TYPE_Q6_K = 14
    GGML_TYPE_Q8_K = 15
    GGML_TYPE_IQ2_XXS = 16
    GGML_TYPE_IQ2_XS  = 17
    GGML_TYPE_IQ3_XXS = 18
    GGML_TYPE_IQ1_S  = 19
    GGML_TYPE_IQ4_NL = 20
    GGML_TYPE_IQ3_S  = 21
    GGML_TYPE_IQ2_S  = 22
    GGML_TYPE_IQ4_XS = 23
    GGML_TYPE_I8  = 24
    GGML_TYPE_I16 = 25
    GGML_TYPE_I32 = 26
    GGML_TYPE_I64 = 27
    GGML_TYPE_F64 = 28
    GGML_TYPE_IQ1_M = 29
    GGML_TYPE_BF16  = 30
    GGML_TYPE_TQ1_0 = 34
    GGML_TYPE_TQ2_0 = 35
    GGML_TYPE_MXFP4 = 39
    GGML_TYPE_NVFP4 = 40
    GGML_TYPE_Q1_0 = 41
    GGML_TYPE_Q2_0 = 42
    GGML_TYPE_F8_E4M3 = 43
    GGML_TYPE_COUNT = 44


class ggml_fp8_e4m3_t(ctypes.Structure):
    """OCP FP8 E4M3 storage; bits are not a Python floating-point value."""

    _fields_ = [("bits", ctypes.c_uint8)]


# // precision
# enum ggml_prec {
#     GGML_PREC_UNDEFINED = 0,
#     GGML_PREC_DEFAULT =  0, // deprecated alias
#     GGML_PREC_F32     = 10,
#     GGML_PREC_BF16    = 15,
#     GGML_PREC_F16     = 20,
#     GGML_PREC_Q8      = 30,
#     GGML_PREC_Q4      = 40,
# };
class GGMLPrec(enum.IntEnum):
    GGML_PREC_UNDEFINED = 0
    GGML_PREC_DEFAULT =  0
    GGML_PREC_F32     = 10
    GGML_PREC_BF16    = 15
    GGML_PREC_F16     = 20
    GGML_PREC_Q8      = 30
    GGML_PREC_Q4      = 40


# // op hint
# enum ggml_op_hint {
#     GGML_HINT_NONE             = 0,
#     GGML_HINT_SRC0_IS_HADAMARD = 1,
# };
class GGMLOpHint(enum.IntEnum):
    GGML_HINT_NONE =  0
    GGML_HINT_SRC0_IS_HADAMARD = 1


# // model file types
# enum ggml_ftype {
#     GGML_FTYPE_UNKNOWN        = -1,
#     GGML_FTYPE_ALL_F32        = 0,
#     GGML_FTYPE_MOSTLY_F16     = 1,  // except 1d tensors
#     GGML_FTYPE_MOSTLY_Q4_0    = 2,  // except 1d tensors
#     GGML_FTYPE_MOSTLY_Q4_1    = 3,  // except 1d tensors
#     GGML_FTYPE_MOSTLY_Q4_1_SOME_F16 = 4, // tok_embeddings.weight and output.weight are F16
#     GGML_FTYPE_MOSTLY_Q8_0    = 7,  // except 1d tensors
#     GGML_FTYPE_MOSTLY_Q5_0    = 8,  // except 1d tensors
#     GGML_FTYPE_MOSTLY_Q5_1    = 9,  // except 1d tensors
#     GGML_FTYPE_MOSTLY_Q2_K    = 10, // except 1d tensors
#     GGML_FTYPE_MOSTLY_Q3_K    = 11, // except 1d tensors
#     GGML_FTYPE_MOSTLY_Q4_K    = 12, // except 1d tensors
#     GGML_FTYPE_MOSTLY_Q5_K    = 13, // except 1d tensors
#     GGML_FTYPE_MOSTLY_Q6_K    = 14, // except 1d tensors
#     GGML_FTYPE_MOSTLY_IQ2_XXS = 15, // except 1d tensors
#     GGML_FTYPE_MOSTLY_IQ2_XS  = 16, // except 1d tensors
#     GGML_FTYPE_MOSTLY_IQ3_XXS = 17, // except 1d tensors
#     GGML_FTYPE_MOSTLY_IQ1_S   = 18, // except 1d tensors
#     GGML_FTYPE_MOSTLY_IQ4_NL  = 19, // except 1d tensors
#     GGML_FTYPE_MOSTLY_IQ3_S   = 20, // except 1d tensors
#     GGML_FTYPE_MOSTLY_IQ2_S   = 21, // except 1d tensors
#     GGML_FTYPE_MOSTLY_IQ4_XS  = 22, // except 1d tensors
#     GGML_FTYPE_MOSTLY_IQ1_M   = 23, // except 1d tensors
#     GGML_FTYPE_MOSTLY_BF16    = 24, // except 1d tensors
#     GGML_FTYPE_MOSTLY_MXFP4   = 25, // except 1d tensors
#     GGML_FTYPE_MOSTLY_NVFP4   = 26, // except 1d tensors
#     GGML_FTYPE_MOSTLY_Q1_0    = 27, // except 1d tensors
#     GGML_FTYPE_MOSTLY_Q2_0    = 28, // except 1d tensors
#     GGML_FTYPE_MOSTLY_F8_E4M3 = 29, // except 1d tensors
# };
class GGMLFType(enum.IntEnum):
    GGML_FTYPE_UNKNOWN        = -1
    GGML_FTYPE_ALL_F32        = 0
    GGML_FTYPE_MOSTLY_F16     = 1
    GGML_FTYPE_MOSTLY_Q4_0    = 2
    GGML_FTYPE_MOSTLY_Q4_1    = 3
    GGML_FTYPE_MOSTLY_Q4_1_SOME_F16 = 4
    GGML_FTYPE_MOSTLY_Q8_0    = 7
    GGML_FTYPE_MOSTLY_Q5_0    = 8
    GGML_FTYPE_MOSTLY_Q5_1    = 9
    GGML_FTYPE_MOSTLY_Q2_K    = 10
    GGML_FTYPE_MOSTLY_Q3_K    = 11
    GGML_FTYPE_MOSTLY_Q4_K    = 12
    GGML_FTYPE_MOSTLY_Q5_K    = 13
    GGML_FTYPE_MOSTLY_Q6_K    = 14
    GGML_FTYPE_MOSTLY_IQ2_XXS = 15
    GGML_FTYPE_MOSTLY_IQ2_XS  = 16
    GGML_FTYPE_MOSTLY_IQ3_XXS = 17
    GGML_FTYPE_MOSTLY_IQ1_S   = 18
    GGML_FTYPE_MOSTLY_IQ4_NL  = 19
    GGML_FTYPE_MOSTLY_IQ3_S   = 20
    GGML_FTYPE_MOSTLY_IQ2_S   = 21
    GGML_FTYPE_MOSTLY_IQ4_XS  = 22
    GGML_FTYPE_MOSTLY_IQ1_M   = 23
    GGML_FTYPE_MOSTLY_BF16    = 24
    GGML_FTYPE_MOSTLY_MXFP4   = 25
    GGML_FTYPE_MOSTLY_NVFP4   = 26
    GGML_FTYPE_MOSTLY_Q1_0    = 27
    GGML_FTYPE_MOSTLY_Q2_0    = 28
    GGML_FTYPE_MOSTLY_F8_E4M3 = 29


# // available tensor operations:
# enum ggml_op {
#     GGML_OP_NONE = 0,

#     GGML_OP_DUP,
#     GGML_OP_ADD,
#     GGML_OP_ADD_ID,
#     GGML_OP_ADD1,
#     GGML_OP_ACC,
#     GGML_OP_SUB,
#     GGML_OP_MUL,
#     GGML_OP_DIV,
#     GGML_OP_SQR,
#     GGML_OP_SQRT,
#     GGML_OP_LOG,
#     GGML_OP_SIN,
#     GGML_OP_COS,
#     GGML_OP_SUM,
#     GGML_OP_SUM_ROWS,
#     GGML_OP_CUMSUM,
#     GGML_OP_MEAN,
#     GGML_OP_ARGMAX,
#     GGML_OP_COUNT_EQUAL,
#     GGML_OP_REPEAT,
#     GGML_OP_REPEAT_BACK,
#     GGML_OP_CONCAT,
#     GGML_OP_SILU_BACK,
#     GGML_OP_NORM, // normalize
#     GGML_OP_RMS_NORM,
#     GGML_OP_RMS_NORM_BACK,
#     GGML_OP_GROUP_NORM,
#     GGML_OP_L2_NORM,

#     GGML_OP_MUL_MAT,
#     GGML_OP_MUL_MAT_ID,
#     GGML_OP_OUT_PROD,

#     GGML_OP_SCALE,
#     GGML_OP_SET,
#     GGML_OP_CPY,
#     GGML_OP_CONT,
#     GGML_OP_RESHAPE,
#     GGML_OP_VIEW,
#     GGML_OP_PERMUTE,
#     GGML_OP_TRANSPOSE,
#     GGML_OP_GET_ROWS,
#     GGML_OP_GET_ROWS_BACK,
#     GGML_OP_SET_ROWS,
#     GGML_OP_DIAG,
#     GGML_OP_DIAG_MASK_INF,
#     GGML_OP_DIAG_MASK_ZERO,
#     GGML_OP_SOFT_MAX,
#     GGML_OP_SOFT_MAX_BACK,
#     GGML_OP_ROPE,
#     GGML_OP_ROPE_BACK,
#     GGML_OP_CLAMP,
#     GGML_OP_CONV_TRANSPOSE_1D,
#     GGML_OP_IM2COL,
#     GGML_OP_IM2COL_BACK,
#     GGML_OP_IM2COL_3D,
#     GGML_OP_COL2IM_1D,
#     GGML_OP_CONV_2D,
#     GGML_OP_CONV_3D,
#     GGML_OP_CONV_2D_DW,
#     GGML_OP_CONV_TRANSPOSE_2D,
#     GGML_OP_POOL_1D,
#     GGML_OP_POOL_2D,
#     GGML_OP_POOL_2D_BACK,
#     GGML_OP_UPSCALE,
#     GGML_OP_PAD,
#     GGML_OP_PAD_REFLECT_1D,
#     GGML_OP_ROLL,
#     GGML_OP_ARANGE,
#     GGML_OP_TIMESTEP_EMBEDDING,
#     GGML_OP_ARGSORT,
#     GGML_OP_TOP_K,
#     GGML_OP_LEAKY_RELU,
#     GGML_OP_TRI,
#     GGML_OP_FILL,

#     GGML_OP_FLASH_ATTN_EXT,
#     GGML_OP_FLASH_ATTN_BACK,
#     GGML_OP_SSM_CONV,
#     GGML_OP_SSM_SCAN,
#     GGML_OP_WIN_PART,
#     GGML_OP_WIN_UNPART,
#     GGML_OP_GET_REL_POS,
#     GGML_OP_ADD_REL_POS,
#     GGML_OP_RWKV_WKV6,
#     GGML_OP_GATED_LINEAR_ATTN,
#     GGML_OP_RWKV_WKV7,
#     GGML_OP_SOLVE_TRI,
#     GGML_OP_GATED_DELTA_NET,
#     GGML_OP_LIGHTNING_INDEXER,
#     GGML_OP_DSV4_HC_COMB,
#     GGML_OP_DSV4_HC_PRE,
#     GGML_OP_DSV4_HC_POST,
#     GGML_OP_TOP_K_MASK,

#     GGML_OP_UNARY,

#     GGML_OP_MAP_CUSTOM1,
#     GGML_OP_MAP_CUSTOM2,
#     GGML_OP_MAP_CUSTOM3,

#     GGML_OP_CUSTOM,

#     GGML_OP_CROSS_ENTROPY_LOSS,
#     GGML_OP_CROSS_ENTROPY_LOSS_BACK,
#     GGML_OP_OPT_STEP_ADAMW,
#     GGML_OP_OPT_STEP_SGD,

#     GGML_OP_GLU,

#     GGML_OP_COUNT,
# };
class GGML_OP(enum.IntEnum):
    GGML_OP_NONE = 0

    GGML_OP_DUP = 1
    GGML_OP_ADD = 2
    GGML_OP_ADD_ID = 3
    GGML_OP_ADD1 = 4
    GGML_OP_ACC = 5
    GGML_OP_SUB = 6
    GGML_OP_MUL = 7
    GGML_OP_DIV = 8
    GGML_OP_SQR = 9
    GGML_OP_SQRT = 10
    GGML_OP_LOG = 11
    GGML_OP_SIN = 12
    GGML_OP_COS = 13
    GGML_OP_SUM = 14
    GGML_OP_SUM_ROWS = 15
    GGML_OP_CUMSUM = 16
    GGML_OP_MEAN = 17
    GGML_OP_ARGMAX = 18
    GGML_OP_COUNT_EQUAL = 19
    GGML_OP_REPEAT = 20
    GGML_OP_REPEAT_BACK = 21
    GGML_OP_CONCAT = 22
    GGML_OP_SILU_BACK = 23
    GGML_OP_NORM = 24 # // normalize
    GGML_OP_RMS_NORM = 25
    GGML_OP_RMS_NORM_BACK = 26
    GGML_OP_GROUP_NORM = 27
    GGML_OP_L2_NORM = 28

    GGML_OP_MUL_MAT = 29
    GGML_OP_MUL_MAT_ID = 30
    GGML_OP_OUT_PROD = 31

    GGML_OP_SCALE = 32
    GGML_OP_SET = 33
    GGML_OP_CPY = 34
    GGML_OP_CONT = 35
    GGML_OP_RESHAPE = 36
    GGML_OP_VIEW = 37
    GGML_OP_PERMUTE = 38
    GGML_OP_TRANSPOSE = 39
    GGML_OP_GET_ROWS = 40
    GGML_OP_GET_ROWS_BACK = 41
    GGML_OP_SET_ROWS = 42
    GGML_OP_DIAG = 43
    GGML_OP_DIAG_MASK_INF = 44
    GGML_OP_DIAG_MASK_ZERO = 45
    GGML_OP_SOFT_MAX = 46
    GGML_OP_SOFT_MAX_BACK = 47
    GGML_OP_ROPE = 48
    GGML_OP_ROPE_BACK = 49
    GGML_OP_CLAMP = 50
    GGML_OP_CONV_TRANSPOSE_1D = 51
    GGML_OP_IM2COL = 52
    GGML_OP_IM2COL_BACK = 53
    GGML_OP_IM2COL_3D = 54
    GGML_OP_COL2IM_1D = 55
    GGML_OP_CONV_2D = 56
    GGML_OP_CONV_3D = 57
    GGML_OP_CONV_2D_DW = 58
    GGML_OP_CONV_TRANSPOSE_2D = 59
    GGML_OP_POOL_1D = 60
    GGML_OP_POOL_2D = 61
    GGML_OP_POOL_2D_BACK = 62
    GGML_OP_UPSCALE = 63
    GGML_OP_PAD = 64
    GGML_OP_PAD_REFLECT_1D = 65
    GGML_OP_ROLL = 66
    GGML_OP_ARANGE = 67
    GGML_OP_TIMESTEP_EMBEDDING = 68
    GGML_OP_ARGSORT = 69
    GGML_OP_TOP_K = 70
    GGML_OP_LEAKY_RELU = 71
    GGML_OP_TRI = 72
    GGML_OP_FILL = 73

    GGML_OP_FLASH_ATTN_EXT = 74
    GGML_OP_FLASH_ATTN_BACK = 75
    GGML_OP_SSM_CONV = 76
    GGML_OP_SSM_SCAN = 77
    GGML_OP_WIN_PART = 78
    GGML_OP_WIN_UNPART = 79
    GGML_OP_GET_REL_POS = 80
    GGML_OP_ADD_REL_POS = 81
    GGML_OP_RWKV_WKV6 = 82
    GGML_OP_GATED_LINEAR_ATTN = 83
    GGML_OP_RWKV_WKV7 = 84
    GGML_OP_SOLVE_TRI = 85
    GGML_OP_GATED_DELTA_NET = 86
    GGML_OP_LIGHTNING_INDEXER = 87
    GGML_OP_DSV4_HC_COMB = 88
    GGML_OP_DSV4_HC_PRE = 89
    GGML_OP_DSV4_HC_POST = 90
    GGML_OP_TOP_K_MASK = 91

    GGML_OP_UNARY = 92

    GGML_OP_MAP_CUSTOM1 = 93
    GGML_OP_MAP_CUSTOM2 = 94
    GGML_OP_MAP_CUSTOM3 = 95

    GGML_OP_CUSTOM = 96

    GGML_OP_CROSS_ENTROPY_LOSS = 97
    GGML_OP_CROSS_ENTROPY_LOSS_BACK = 98
    GGML_OP_OPT_STEP_ADAMW = 99
    GGML_OP_OPT_STEP_SGD = 100

    GGML_OP_GLU = 101

    GGML_OP_COUNT = 102

# enum ggml_unary_op {
#     GGML_UNARY_OP_ABS,
#     GGML_UNARY_OP_SGN,
#     GGML_UNARY_OP_NEG,
#     GGML_UNARY_OP_STEP,
#     GGML_UNARY_OP_TANH,
#     GGML_UNARY_OP_ELU,
#     GGML_UNARY_OP_RELU,
#     GGML_UNARY_OP_SIGMOID,
#     GGML_UNARY_OP_GELU,
#     GGML_UNARY_OP_GELU_QUICK,
#     GGML_UNARY_OP_SILU,
#     GGML_UNARY_OP_HARDSWISH,
#     GGML_UNARY_OP_HARDSIGMOID,
#     GGML_UNARY_OP_EXP,
#     GGML_UNARY_OP_EXPM1,
#     GGML_UNARY_OP_SOFTPLUS,
#     GGML_UNARY_OP_GELU_ERF,
#     GGML_UNARY_OP_XIELU,
#     GGML_UNARY_OP_FLOOR,
#     GGML_UNARY_OP_CEIL,
#     GGML_UNARY_OP_ROUND,
#     GGML_UNARY_OP_TRUNC,

#     GGML_UNARY_OP_COUNT,
# };
class GGMLUnaryOp(enum.IntEnum):
    GGML_UNARY_OP_ABS = 0
    GGML_UNARY_OP_SGN = 1
    GGML_UNARY_OP_NEG = 2
    GGML_UNARY_OP_STEP = 3
    GGML_UNARY_OP_TANH = 4
    GGML_UNARY_OP_ELU = 5
    GGML_UNARY_OP_RELU = 6
    GGML_UNARY_OP_SIGMOID = 7
    GGML_UNARY_OP_GELU = 8
    GGML_UNARY_OP_GELU_QUICK = 9
    GGML_UNARY_OP_SILU = 10
    GGML_UNARY_OP_HARDSWISH = 11
    GGML_UNARY_OP_HARDSIGMOID = 12
    GGML_UNARY_OP_EXP = 13
    GGML_UNARY_OP_EXPM1 = 14
    GGML_UNARY_OP_SOFTPLUS = 15
    GGML_UNARY_OP_GELU_ERF = 16
    GGML_UNARY_OP_XIELU = 17
    GGML_UNARY_OP_FLOOR = 18
    GGML_UNARY_OP_CEIL = 19
    GGML_UNARY_OP_ROUND = 20
    GGML_UNARY_OP_TRUNC = 21

    GGML_UNARY_OP_COUNT = 22

# enum ggml_glu_op {
#     GGML_GLU_OP_REGLU,
#     GGML_GLU_OP_GEGLU,
#     GGML_GLU_OP_SWIGLU,
#     GGML_GLU_OP_SWIGLU_OAI,
#     GGML_GLU_OP_GEGLU_ERF,
#     GGML_GLU_OP_GEGLU_QUICK,
#     GGML_GLU_OP_SWIGLU_CLAMP,
#     GGML_GLU_OP_COUNT,
# };
class GGMLGluOp(enum.IntEnum):
    GGML_GLU_OP_REGLU = 0
    GGML_GLU_OP_GEGLU = 1
    GGML_GLU_OP_SWIGLU = 2
    GGML_GLU_OP_SWIGLU_OAI = 3
    GGML_GLU_OP_GEGLU_ERF = 4
    GGML_GLU_OP_GEGLU_QUICK = 5
    GGML_GLU_OP_SWIGLU_CLAMP = 6

    GGML_GLU_OP_COUNT = 7


# enum ggml_log_level {
#     GGML_LOG_LEVEL_NONE  = 0,
#     GGML_LOG_LEVEL_DEBUG = 1,
#     GGML_LOG_LEVEL_INFO  = 2,
#     GGML_LOG_LEVEL_WARN  = 3,
#     GGML_LOG_LEVEL_ERROR = 4,
#     GGML_LOG_LEVEL_CONT  = 5, // continue previous log
# };
class GGMLLogLevel(enum.IntEnum):
    GGML_LOG_LEVEL_NONE  = 0
    GGML_LOG_LEVEL_DEBUG = 1
    GGML_LOG_LEVEL_INFO  = 2
    GGML_LOG_LEVEL_WARN  = 3
    GGML_LOG_LEVEL_ERROR = 4
    GGML_LOG_LEVEL_CONT  = 5 # continue previous log


# // this tensor...
# enum ggml_tensor_flag {
#     GGML_TENSOR_FLAG_INPUT   =  1, // ...is an input for the GGML compute graph
#     GGML_TENSOR_FLAG_OUTPUT  =  2, // ...is an output for the GGML compute graph
#     GGML_TENSOR_FLAG_PARAM   =  4, // ...contains trainable parameters
#     GGML_TENSOR_FLAG_LOSS    =  8, // ...defines loss for numerical optimization (multiple loss tensors add up)
#     GGML_TENSOR_FLAG_COMPUTE = 16, // ...must be computed
# };
class GGMLTensorFlag(enum.IntEnum):
    GGML_TENSOR_FLAG_INPUT   = 1   # ...is an input for the GGML compute graph
    GGML_TENSOR_FLAG_OUTPUT  = 2   # ...is an output for the GGML compute graph
    GGML_TENSOR_FLAG_PARAM   = 4   # ...contains trainable parameters
    GGML_TENSOR_FLAG_LOSS    = 8   # ...defines loss for numerical optimization (multiple loss tensors add up)
    GGML_TENSOR_FLAG_COMPUTE = 16  # ...must be computed


# enum ggml_tri_type {
#     GGML_TRI_TYPE_UPPER_DIAG = 0,
#     GGML_TRI_TYPE_UPPER      = 1,
#     GGML_TRI_TYPE_LOWER_DIAG = 2,
#     GGML_TRI_TYPE_LOWER      = 3
# };
class GGMLTriType(enum.IntEnum):
    GGML_TRI_TYPE_UPPER_DIAG = 0
    GGML_TRI_TYPE_UPPER      = 1
    GGML_TRI_TYPE_LOWER_DIAG = 2
    GGML_TRI_TYPE_LOWER      = 3


# //
# // ggml object
# //

# enum ggml_object_type {
#     GGML_OBJECT_TYPE_TENSOR,
#     GGML_OBJECT_TYPE_GRAPH,
#     GGML_OBJECT_TYPE_WORK_BUFFER
# };
class GGMLObjectType(enum.IntEnum):
    GGML_OBJECT_TYPE_TENSOR      = 0
    GGML_OBJECT_TYPE_GRAPH       = 1
    GGML_OBJECT_TYPE_WORK_BUFFER = 2


# struct ggml_object {
#     size_t offs;
#     size_t size;
#     struct ggml_object * next;
#     enum ggml_object_type type;
#     char padding[4];
# };
class ggml_object(ctypes.Structure):
    if TYPE_CHECKING:
        offs: ctypes.c_size_t
        size: ctypes.c_size_t
        next: "ctypes.POINTER(ggml_object)"  # type: ignore
        type: int
        padding: ctypes.Array[ctypes.c_char]

ggml_object_p = ctypes.POINTER(ggml_object)

ggml_object._fields_ = [
    ("offs", ctypes.c_size_t),
    ("size", ctypes.c_size_t),
    ("next", ggml_object_p),
    ("type", ctypes.c_int),
    ("padding", ctypes.c_char * 4),
]

GGML_OBJECT_SIZE = ctypes.sizeof(ggml_object)


# //
# // ggml context
# //

# struct ggml_context {
#     size_t mem_size;
#     void * mem_buffer;
#     bool   mem_buffer_owned;
#     bool   no_alloc;
#     int    n_objects;
#     struct ggml_object * objects_begin;
#     struct ggml_object * objects_end;
# };
class ggml_context(ctypes.Structure):

    if TYPE_CHECKING:
        mem_size: ctypes.c_size_t
        mem_buffer: ctypes.c_void_p
        mem_buffer_owned: bool
        no_alloc: bool
        n_objects: int
        objects_begin: ggml_object_p # type: ignore
        objects_end: ggml_object_p   # type: ignore

    _fields_ = [
        ("mem_size", ctypes.c_size_t),
        ("mem_buffer", ctypes.c_void_p),
        ("mem_buffer_owned", ctypes.c_bool),
        ("no_alloc", ctypes.c_bool),
        ("n_objects", ctypes.c_int),
        ("objects_begin", ggml_object_p),
        ("objects_end", ggml_object_p),
    ]

ggml_context_p = ctypes.POINTER(ggml_context)


# struct ggml_init_params {
#     // memory pool
#     size_t mem_size;   // bytes
#     void * mem_buffer; // if NULL, memory will be allocated internally
#     bool   no_alloc;   // don't allocate memory for the tensor data
# };
class ggml_init_params(ctypes.Structure):
    _fields_ = [
        ('mem_size', ctypes.c_size_t),
        ('mem_buffer', ctypes.c_void_p),
        ('no_alloc', ctypes.c_bool),
    ]


# // n-dimensional tensor
# struct ggml_tensor {
#     enum ggml_type type;
#     struct ggml_backend_buffer * buffer;
#     int64_t ne[GGML_MAX_DIMS]; // number of elements
#     size_t  nb[GGML_MAX_DIMS]; // stride in bytes:
#                                 // nb[0] = ggml_type_size(type)
#                                 // nb[1] = nb[0]   * (ne[0] / ggml_blck_size(type)) + padding
#                                 // nb[i] = nb[i-1] * ne[i-1]
#     // compute data
#     enum ggml_op op;
#     // op params - allocated as int32_t for alignment
#     int32_t op_params[GGML_MAX_OP_PARAMS / sizeof(int32_t)];
#     int32_t flags;
#     struct ggml_tensor * src[GGML_MAX_SRC];
#     // source tensor and offset for views
#     struct ggml_tensor * view_src;
#     size_t               view_offs;
#     void * data;
#     char name[GGML_MAX_NAME];
#     void * extra; // extra things e.g. for ggml-cuda.cu
#     char padding[8];
# };
class ggml_tensor(ctypes.Structure):
    """n-dimensional tensor"""

    if TYPE_CHECKING:
        type: int
        buffer: ctypes.c_void_p
        ne: ctypes.Array[ctypes.c_int64]
        nb: ctypes.Array[ctypes.c_size_t]
        op: int
        op_params: ctypes.Array[ctypes.c_int32]
        flags: int
        src: "ctypes.Array[ctypes.POINTER(ggml_tensor)]"  # type: ignore
        view_src: "ctypes.POINTER(ggml_tensor)"           # type: ignore
        view_offs: ctypes.c_size_t
        data: ctypes.c_void_p
        name: ctypes.Array[ctypes.c_char]
        extra: ctypes.c_void_p
        padding: ctypes.Array[ctypes.c_char]

ggml_tensor_p = ctypes.POINTER(ggml_tensor)

ggml_tensor._fields_ = [
        ("type", ctypes.c_int),
        ("buffer", ctypes.c_void_p),
        ("ne", ctypes.c_int64 * GGML_MAX_DIMS),
        ("nb", ctypes.c_size_t * GGML_MAX_DIMS),
        ("op", ctypes.c_int),
        ("op_params", ctypes.c_int32 * (GGML_MAX_OP_PARAMS // ctypes.sizeof(ctypes.c_int32))),
        ("flags", ctypes.c_int32),
        ("src", ggml_tensor_p * GGML_MAX_SRC),
        ("view_src", ggml_tensor_p),
        ("view_offs", ctypes.c_size_t),
        ("data", ctypes.c_void_p),
        ("name", ctypes.c_char * GGML_MAX_NAME),
        ("extra", ctypes.c_void_p),
        ("padding", ctypes.c_char * 8),
]


@ggml_base_function(
    "ggml_flash_attn_ext_rows",
    [ggml_context_p, ggml_tensor_p, ggml_tensor_p, ggml_tensor_p,
     ggml_tensor_p, ggml_tensor_p, ctypes.c_float, ctypes.c_float, ctypes.c_float],
    ggml_tensor_p,
    required=False,
)
def ggml_flash_attn_ext_rows(ctx, q, k, v, mask, kv_rows, scale, max_bias, logit_softcap):
    """Build flash attention with per-slice I32 KV row indices.

    Negative row indices are padding and must have -inf mask entries.
    The caller owns the context and must supply compatible tensor shapes.
    """
    ...

# // Abort callback
# // If not NULL, called before ggml computation
# // If it returns true, the computation is aborted
# typedef bool (*ggml_abort_callback)(void * data);
ggml_abort_callback = ctypes.CFUNCTYPE(ctypes.c_bool, ctypes.c_void_p)


# // TODO these functions were sandwiched in the old optimization interface, is there a better place for them?
# typedef void (*ggml_log_callback)(enum ggml_log_level level, const char * text, void * user_data);
ggml_log_callback = ctypes.CFUNCTYPE(
    None, ctypes.c_int, ctypes.c_char_p, ctypes.c_void_p
)

# // Set callback for all future logging events.
# // If this is not called, or NULL is supplied, everything is output on stderr.
# // The logger state is global so these functions are NOT thread safe.
# GGML_API void ggml_log_get(ggml_log_callback * log_callback, void ** user_data);
@ggml_base_function(
    "ggml_log_get",
    [ctypes.POINTER(ggml_log_callback), ctypes.POINTER(ctypes.c_void_p)],
    None,
)
def ggml_log_get(
    log_callback: Optional[ctypes.POINTER(ggml_log_callback)], # type: ignore
    user_data: ctypes.POINTER(ctypes.c_void_p),                # type: ignore
    /,
):
    """
    Get callback for all future logging events.
    If this is not called, or NULL is supplied, everything is output on stderr.
    The logger state is global so these functions are NOT thread safe.
    """
    ...


# GGML_API void ggml_log_set(ggml_log_callback   log_callback, void *  user_data);
@ggml_base_function(
    "ggml_log_set",
    [ggml_log_callback, ctypes.c_void_p],
    None,
)
def ggml_log_set(
    log_callback: Optional[ggml_log_callback], # type: ignore
    user_data: ctypes.c_void_p,
    /,
):
    """
    Set callback for all future logging events.
    If this is not called, or NULL is supplied, everything is output on stderr.
    The logger state is global so these functions are NOT thread safe.
    """
    ...


# GGML_API struct ggml_tensor * ggml_set_zero(struct ggml_tensor * tensor);
@ggml_base_function(
    "ggml_set_zero",
    [ggml_tensor_p],
    ggml_tensor_p,
)
def ggml_set_zero(
    tensor: ctypes.c_void_p,
    /,
) -> ctypes.c_void_p:
    """
    Memset tensor data to zero
    """
    ...


# // ====== ggml-opt.h ======

# // built-in loss types, i.e. the built-in quantities minimized by the optimizer
# // custom loss types can be defined via mean or sum which simply reduce the outputs for all datapoints to a single value
# enum ggml_opt_loss_type {
#     GGML_OPT_LOSS_TYPE_MEAN,
#     GGML_OPT_LOSS_TYPE_SUM,
#     GGML_OPT_LOSS_TYPE_CROSS_ENTROPY,
#     GGML_OPT_LOSS_TYPE_MEAN_SQUARED_ERROR,
# };
class GGMLOptLossType(enum.IntEnum):
    GGML_OPT_LOSS_TYPE_MEAN               = 0
    GGML_OPT_LOSS_TYPE_SUM                = 1
    GGML_OPT_LOSS_TYPE_CROSS_ENTROPY      = 2
    GGML_OPT_LOSS_TYPE_MEAN_SQUARED_ERROR = 3


# enum ggml_opt_build_type {
#     GGML_OPT_BUILD_TYPE_FORWARD = 10,
#     GGML_OPT_BUILD_TYPE_GRAD    = 20,
#     GGML_OPT_BUILD_TYPE_OPT     = 30,
# };
class GGMLOptBuildType(enum.IntEnum):
    GGML_OPT_BUILD_TYPE_FORWARD = 10
    GGML_OPT_BUILD_TYPE_GRAD    = 20
    GGML_OPT_BUILD_TYPE_OPT     = 30


# enum ggml_opt_optimizer_type {
#     GGML_OPT_OPTIMIZER_TYPE_ADAMW,
#     GGML_OPT_OPTIMIZER_TYPE_SGD,

#     GGML_OPT_OPTIMIZER_TYPE_COUNT
# };
class GGMLOptOptimizerType(enum.IntEnum):
    GGML_OPT_OPTIMIZER_TYPE_ADAMW = 0
    GGML_OPT_OPTIMIZER_TYPE_SGD   = 1
    GGML_OPT_OPTIMIZER_TYPE_COUNT = 2


# // parameters that control which optimizer is used and how said optimizer tries to find the minimal loss
# struct ggml_opt_optimizer_params {
#     struct {
#         float alpha; // learning rate
#         float beta1; // first AdamW momentum
#         float beta2; // second AdamW momentum
#         float eps;   // epsilon for numerical stability
#         float wd;    // weight decay - 0.0f to disable
#     } adamw;
#     struct {
#         float alpha; // learning rate
#         float wd;    // weight decay
#     } sgd;
# };
class ggml_opt_adamw_params(ctypes.Structure):
    _fields_ = [
        ('alpha', ctypes.c_float), # learning rate
        ('beta1', ctypes.c_float), # first AdamW momentum
        ('beta2', ctypes.c_float), # second AdamW momentum
        ('eps',   ctypes.c_float), # epsilon for numerical stability
        ('wd',    ctypes.c_float), # weight decay - 0.0f to disable
    ]

class ggml_opt_sgd_params(ctypes.Structure):
    _fields_ = [
        ('alpha', ctypes.c_float), # learning rate
        ('wd',    ctypes.c_float), # weight decay
    ]

class ggml_opt_optimizer_params(ctypes.Structure):
    _fields_ = [
        ('adamw', ggml_opt_adamw_params), # Nested AdamW parameters
        ('sgd', ggml_opt_sgd_params), # Nested SGD parameters
    ]


# // callback to calculate optimizer parameters prior to a backward pass
# // userdata can be used to pass arbitrary data
# typedef struct ggml_opt_optimizer_params (*ggml_opt_get_optimizer_params)(void * userdata);
ggml_opt_get_optimizer_params = ctypes.CFUNCTYPE(
    ggml_opt_optimizer_params, ctypes.c_void_p
)


# //
# // GGML Backend from ggml-backend.h
# //

# typedef struct ggml_backend_buffer_type * ggml_backend_buffer_type_t;
ggml_backend_buffer_type_t = NewType(
    "ggml_backend_buffer_type_t",
    ctypes.c_void_p,
)

# typedef struct ggml_backend_buffer * ggml_backend_buffer_t;
ggml_backend_buffer_t = NewType(
    "ggml_backend_buffer_t",
    ctypes.c_void_p,
)

# typedef struct ggml_backend_event * ggml_backend_event_t;
ggml_backend_event_t = NewType(
    "ggml_backend_event_t",
    ctypes.c_void_p,
)

# typedef struct             ggml_backend * ggml_backend_t;
ggml_backend_t = NewType(
    "ggml_backend_t",
    ctypes.c_void_p,
)

# typedef struct ggml_backend_reg * ggml_backend_reg_t;
ggml_backend_reg_t = NewType(
    "ggml_backend_reg_t",
    ctypes.c_void_p,
)

# typedef struct ggml_backend_device * ggml_backend_dev_t;
ggml_backend_dev_t = NewType(
    "ggml_backend_dev_t",
    ctypes.c_void_p,
)

# //
# // Backend buffer type
# //

# GGML_API const char *          ggml_backend_buft_name          (ggml_backend_buffer_type_t buft);
@ggml_base_function("ggml_backend_buft_name", [ctypes.c_void_p], ctypes.c_char_p)
def ggml_backend_buft_name(buft: ggml_backend_buffer_type_t) -> ctypes.c_char_p:
    """
    Get ggml_backend_buffer name
    """
    ...


# GGML_API ggml_backend_buffer_t ggml_backend_buft_alloc_buffer  (ggml_backend_buffer_type_t buft, size_t size);
@ggml_base_function("ggml_backend_buft_alloc_buffer", [ctypes.c_void_p, ctypes.c_size_t], ctypes.c_void_p)
def ggml_backend_buft_alloc_buffer(
    buft: ggml_backend_buffer_type_t,
    size: ctypes.c_size_t
) -> ggml_backend_buffer_t:
    """
    Alloc ggml_backend_buffer with size
    """
    ...


# GGML_API ggml_backend_buffer_t ggml_backend_buft_alloc_buffer_n(ggml_backend_buffer_type_t buft, struct ggml_tensor ** tensors, int n_tensors);
@ggml_base_function("ggml_backend_buft_alloc_buffer_n", [
    ctypes.c_void_p,
    ctypes.POINTER(ggml_tensor_p),
    ctypes.c_int,
], ctypes.c_void_p)
def ggml_backend_buft_alloc_buffer_n(
    buft: ggml_backend_buffer_type_t,
    tensors: ctypes.POINTER(ggml_tensor_p),  # type: ignore
    n_tensors: ctypes.c_int,
) -> ggml_backend_buffer_t:
    """Allocate a backend buffer for an array of tensor pointers."""
    ...


# GGML_API size_t                ggml_backend_buft_get_alignment (ggml_backend_buffer_type_t buft);
@ggml_base_function("ggml_backend_buft_get_alignment", [ctypes.c_void_p], ctypes.c_size_t)
def ggml_backend_buft_get_alignment(buft: ggml_backend_buffer_type_t) -> ctypes.c_size_t:
    """
    Get tensor alignment by ggml_backend_buffer
    """
    ...


# GGML_API size_t                ggml_backend_buft_get_max_size  (ggml_backend_buffer_type_t buft);
@ggml_base_function("ggml_backend_buft_get_max_size", [ctypes.c_void_p], ctypes.c_size_t)
def ggml_backend_buft_get_max_size(buft: ggml_backend_buffer_type_t) -> ctypes.c_size_t:
    """
    Get ggml_backend_buffer max buffer size that can be allocated (defaults to SIZE_MAX)
    """
    ...


# GGML_API size_t                ggml_backend_buft_get_alloc_size(ggml_backend_buffer_type_t buft, const struct ggml_tensor * tensor);
@ggml_base_function("ggml_backend_buft_get_alloc_size", [
    ctypes.c_void_p,
    ggml_tensor_p,
], ctypes.c_size_t)
def ggml_backend_buft_get_alloc_size(
    buft: ggml_backend_buffer_type_t,
    tensor: ggml_tensor_p,  # type: ignore
) -> ctypes.c_size_t:
    """
    Get alloc data size needed to allocate the tensor, including padding (defaults to ggml_nbytes)
    """
    ...


# GGML_API size_t ggml_backend_buft_get_alloc_size_n(ggml_backend_buffer_type_t buft, struct ggml_tensor ** tensors, int n_tensors);
@ggml_base_function("ggml_backend_buft_get_alloc_size_n", [
    ctypes.c_void_p,
    ctypes.POINTER(ggml_tensor_p),
    ctypes.c_int,
], ctypes.c_size_t)
def ggml_backend_buft_get_alloc_size_n(
    buft: ggml_backend_buffer_type_t,
    tensors: ctypes.POINTER(ggml_tensor_p),  # type: ignore
    n_tensors: ctypes.c_int,
) -> ctypes.c_size_t:
    """Get the allocation size for an array of tensor pointers."""
    ...


# GGML_API bool                  ggml_backend_buft_is_host       (ggml_backend_buffer_type_t buft);
@ggml_base_function("ggml_backend_buft_is_host", [ctypes.c_void_p], ctypes.c_bool)
def ggml_backend_buft_is_host(buft: ggml_backend_buffer_type_t) -> ctypes.c_bool:
    """
    Check if ggml_backend_buffer is host
    """
    ...


# GGML_API ggml_backend_dev_t    ggml_backend_buft_get_device    (ggml_backend_buffer_type_t buft);
@ggml_base_function("ggml_backend_buft_get_device", [ctypes.c_void_p], ctypes.c_void_p)
def ggml_backend_buft_get_device(buft: ggml_backend_buffer_type_t) -> ggml_backend_dev_t:
    """
    Get device by ggml_backend_buffer
    """
    ...

# //
# // Backend buffer
# //

# enum ggml_backend_buffer_usage {
#     GGML_BACKEND_BUFFER_USAGE_ANY = 0,
#     GGML_BACKEND_BUFFER_USAGE_WEIGHTS = 1,
#     GGML_BACKEND_BUFFER_USAGE_COMPUTE = 2,
# };
class GGMLBackendBufferUsage(enum.IntEnum):
    GGML_BACKEND_BUFFER_USAGE_ANY = 0
    GGML_BACKEND_BUFFER_USAGE_WEIGHTS = 1
    GGML_BACKEND_BUFFER_USAGE_COMPUTE = 2


# GGML_API const char *                   ggml_backend_buffer_name          (ggml_backend_buffer_t buffer);
@ggml_base_function("ggml_backend_buffer_name", [ctypes.c_void_p], ctypes.c_char_p)
def ggml_backend_buffer_name(buffer: ggml_backend_buffer_t) -> ctypes.c_char_p:
    """
    Get ggml_backend_buffer name
    """
    ...


# GGML_API void                           ggml_backend_buffer_free          (ggml_backend_buffer_t buffer);
@ggml_base_function("ggml_backend_buffer_free", [ctypes.c_void_p], None)
def ggml_backend_buffer_free(buffer: ggml_backend_buffer_t):
    """
    Free ggml_backend_buffer
    """
    ...


# GGML_API void *                         ggml_backend_buffer_get_base      (ggml_backend_buffer_t buffer);
@ggml_base_function("ggml_backend_buffer_get_base", [ctypes.c_void_p], ctypes.c_void_p)
def ggml_backend_buffer_get_base(buffer: ggml_backend_buffer_t) -> ctypes.c_void_p:
    """
    Get ggml_backend_buffer base address
    """
    ...


# GGML_API size_t                         ggml_backend_buffer_get_size      (ggml_backend_buffer_t buffer);
@ggml_base_function("ggml_backend_buffer_get_size", [ctypes.c_void_p], ctypes.c_size_t)
def ggml_backend_buffer_get_size(buffer: ggml_backend_buffer_t) -> ctypes.c_size_t:
    """
    Get ggml_backend_buffer size
    """
    ...


# GGML_API enum ggml_status               ggml_backend_buffer_init_tensor   (ggml_backend_buffer_t buffer, struct ggml_tensor * tensor);
@ggml_base_function("ggml_backend_buffer_init_tensor", [
    ctypes.c_void_p,
    ggml_tensor_p,
], ctypes.c_int32)
def ggml_backend_buffer_init_tensor(
    buffer: ggml_backend_buffer_t,
    tensor: ggml_tensor_p,  # type: ignore
) -> ctypes.c_int32:
    """
    Init tensor by ggml_backend_buffer
    """
    ...


# GGML_API size_t                         ggml_backend_buffer_get_alignment (ggml_backend_buffer_t buffer);
@ggml_base_function("ggml_backend_buffer_get_alignment", [ctypes.c_void_p], ctypes.c_size_t)
def ggml_backend_buffer_get_alignment(buffer: ggml_backend_buffer_t) -> ctypes.c_size_t:
    """
    Get tensor alignment by ggml_backend_buffer
    """
    ...


# GGML_API size_t                         ggml_backend_buffer_get_max_size  (ggml_backend_buffer_t buffer);
@ggml_base_function("ggml_backend_buffer_get_max_size", [ctypes.c_void_p], ctypes.c_size_t)
def ggml_backend_buffer_get_max_size(buffer: ggml_backend_buffer_t) -> ctypes.c_size_t:
    """
    Get max buffer size that can be allocated (defaults to SIZE_MAX)
    """
    ...


# GGML_API size_t                         ggml_backend_buffer_get_alloc_size(ggml_backend_buffer_t buffer, const struct ggml_tensor * tensor);
@ggml_base_function("ggml_backend_buffer_get_alloc_size", [
    ctypes.c_void_p,
    ggml_tensor_p,
], ctypes.c_size_t)
def ggml_backend_buffer_get_alloc_size(
    buffer: ggml_backend_buffer_t,
    tensor: ggml_tensor_p,  # type: ignore
) -> ctypes.c_size_t:
    """
    Get alloc data size needed to allocate the tensor, including padding (defaults to ggml_nbytes)
    """
    ...


# GGML_API void                           ggml_backend_buffer_clear         (ggml_backend_buffer_t buffer, uint8_t value);
@ggml_base_function("ggml_backend_buffer_clear", [ctypes.c_void_p, ctypes.c_uint8], None)
def ggml_backend_buffer_clear(buffer: ggml_backend_buffer_t, value: ctypes.c_uint8):
    """
    Clear ggml_backend_buffer
    """
    ...


# GGML_API bool                           ggml_backend_buffer_is_host       (ggml_backend_buffer_t buffer);
@ggml_base_function("ggml_backend_buffer_is_host", [ctypes.c_void_p], ctypes.c_bool)
def ggml_backend_buffer_is_host(buffer: ggml_backend_buffer_t) -> ctypes.c_bool:
    """
    Check if ggml_backend_buffer is host
    """
    ...


# GGML_API void                           ggml_backend_buffer_set_usage     (ggml_backend_buffer_t buffer, enum ggml_backend_buffer_usage usage);
@ggml_base_function("ggml_backend_buffer_set_usage", [ctypes.c_void_p, ctypes.c_int32], None)
def ggml_backend_buffer_set_usage(buffer: ggml_backend_buffer_t, usage: ctypes.c_int32):
    """
    Set ggml_backend_buffer usage
    """
    ...


# GGML_API enum ggml_backend_buffer_usage ggml_backend_buffer_get_usage     (ggml_backend_buffer_t buffer);
@ggml_base_function("ggml_backend_buffer_get_usage", [ctypes.c_void_p], ctypes.c_int32)
def ggml_backend_buffer_get_usage(buffer: ggml_backend_buffer_t) -> ctypes.c_int32:
    """
    Get ggml_backend_buffer usage
    """
    ...


# GGML_API ggml_backend_buffer_type_t     ggml_backend_buffer_get_type      (ggml_backend_buffer_t buffer);
@ggml_base_function("ggml_backend_buffer_get_type", [ctypes.c_void_p], ctypes.c_void_p)
def ggml_backend_buffer_get_type(buffer: ggml_backend_buffer_t) -> ggml_backend_buffer_type_t:
    """
    Get ggml_backend_buffer_type
    """
    ...


# GGML_API void                           ggml_backend_buffer_reset         (ggml_backend_buffer_t buffer);
@ggml_base_function("ggml_backend_buffer_reset", [ctypes.c_void_p], None)
def ggml_backend_buffer_reset(buffer: ggml_backend_buffer_t):
    """
    Reset ggml_backend_buffer
    """
    ...


# // Backend (stream)

# GGML_API ggml_guid_t ggml_backend_guid(ggml_backend_t backend);
@ggml_base_function("ggml_backend_guid", [ctypes.c_void_p], ctypes.c_void_p)
def ggml_backend_guid(backend: ggml_backend_t) -> Optional[int]:
    """Get the backend implementation GUID."""
    ...


# GGML_API const char * ggml_backend_name(ggml_backend_t backend);
@ggml_base_function("ggml_backend_name", [ctypes.c_void_p], ctypes.c_char_p)
def ggml_backend_name(backend: ggml_backend_t) -> bytes:
    """Get the backend name."""
    ...


# GGML_API void ggml_backend_free(ggml_backend_t backend);
@ggml_base_function("ggml_backend_free", [ctypes.c_void_p], None)
def ggml_backend_free(backend: ggml_backend_t) -> None:
    """Free a backend created by a device or registry initializer."""
    ...


# GGML_API ggml_backend_buffer_type_t ggml_backend_get_default_buffer_type(ggml_backend_t backend);
@ggml_base_function("ggml_backend_get_default_buffer_type", [ctypes.c_void_p], ctypes.c_void_p)
def ggml_backend_get_default_buffer_type(backend: ggml_backend_t) -> ggml_backend_buffer_type_t:
    """Get the backend's default buffer type."""
    ...


# GGML_API ggml_backend_buffer_t ggml_backend_alloc_buffer(ggml_backend_t backend, size_t size);
@ggml_base_function("ggml_backend_alloc_buffer", [ctypes.c_void_p, ctypes.c_size_t], ctypes.c_void_p)
def ggml_backend_alloc_buffer(backend: ggml_backend_t, size: int) -> ggml_backend_buffer_t:
    """Allocate a backend buffer; release it with ggml_backend_buffer_free."""
    ...


# GGML_API size_t ggml_backend_get_alignment(ggml_backend_t backend);
@ggml_base_function("ggml_backend_get_alignment", [ctypes.c_void_p], ctypes.c_size_t)
def ggml_backend_get_alignment(backend: ggml_backend_t) -> int:
    """Get the backend's tensor alignment."""
    ...


# GGML_API size_t ggml_backend_get_max_size(ggml_backend_t backend);
@ggml_base_function("ggml_backend_get_max_size", [ctypes.c_void_p], ctypes.c_size_t)
def ggml_backend_get_max_size(backend: ggml_backend_t) -> int:
    """Get the maximum buffer size supported by the backend."""
    ...


# GGML_API void ggml_backend_synchronize(ggml_backend_t backend);
@ggml_base_function("ggml_backend_synchronize", [ctypes.c_void_p], None)
def ggml_backend_synchronize(backend: ggml_backend_t) -> None:
    """Wait for queued backend operations to complete."""
    ...


# GGML_API ggml_backend_dev_t ggml_backend_get_device(ggml_backend_t backend);
@ggml_base_function("ggml_backend_get_device", [ctypes.c_void_p], ctypes.c_void_p)
def ggml_backend_get_device(backend: ggml_backend_t) -> ggml_backend_dev_t:
    """Get the device associated with a backend."""
    ...


# The caller keeps data buffers alive until an asynchronous operation completes.
# GGML_API void ggml_backend_tensor_set_async (ggml_backend_t backend, struct ggml_tensor * tensor, const void * data, size_t offset, size_t size);
@ggml_base_function("ggml_backend_tensor_set_async", [ctypes.c_void_p, ggml_tensor_p, ctypes.c_void_p, ctypes.c_size_t, ctypes.c_size_t], None)
def ggml_backend_tensor_set_async(backend, tensor, data, offset, size):
    """Queue a host-to-tensor copy; keep data alive until the backend is synchronized."""
    ...


# GGML_API void ggml_backend_tensor_get_async (ggml_backend_t backend, const struct ggml_tensor * tensor, void * data, size_t offset, size_t size);
@ggml_base_function("ggml_backend_tensor_get_async", [ctypes.c_void_p, ggml_tensor_p, ctypes.c_void_p, ctypes.c_size_t, ctypes.c_size_t], None)
def ggml_backend_tensor_get_async(backend, tensor, data, offset, size):
    """Queue a tensor-to-host copy; keep data alive until the backend is synchronized."""
    ...


# GGML_API void ggml_backend_tensor_set_2d_async(ggml_backend_t backend, struct ggml_tensor * tensor, const void * data, size_t offset, size_t size, size_t n_copies, size_t stride_tensor, size_t stride_data);
@ggml_base_function("ggml_backend_tensor_set_2d_async", [ctypes.c_void_p, ggml_tensor_p, ctypes.c_void_p, ctypes.c_size_t, ctypes.c_size_t, ctypes.c_size_t, ctypes.c_size_t, ctypes.c_size_t], None)
def ggml_backend_tensor_set_2d_async(backend, tensor, data, offset, size, n_copies, stride_tensor, stride_data):
    """Queue strided host-to-tensor copies; keep data alive until synchronization."""
    ...


# GGML_API void ggml_backend_tensor_get_2d_async(ggml_backend_t backend, const struct ggml_tensor * tensor, void * data, size_t offset, size_t size, size_t n_copies, size_t stride_tensor, size_t stride_data);
@ggml_base_function("ggml_backend_tensor_get_2d_async", [ctypes.c_void_p, ggml_tensor_p, ctypes.c_void_p, ctypes.c_size_t, ctypes.c_size_t, ctypes.c_size_t, ctypes.c_size_t, ctypes.c_size_t], None)
def ggml_backend_tensor_get_2d_async(backend, tensor, data, offset, size, n_copies, stride_tensor, stride_data):
    """Queue strided tensor-to-host copies; keep data alive until synchronization."""
    ...


# GGML_API void ggml_backend_tensor_set ( struct ggml_tensor * tensor, const void * data, size_t offset, size_t size);
@ggml_base_function("ggml_backend_tensor_set", [ggml_tensor_p, ctypes.c_void_p, ctypes.c_size_t, ctypes.c_size_t], None)
def ggml_backend_tensor_set(tensor, data, offset, size):
    """Copy host data into a tensor starting at the given byte offset."""
    ...


# GGML_API void ggml_backend_tensor_get (const struct ggml_tensor * tensor, void * data, size_t offset, size_t size);
@ggml_base_function("ggml_backend_tensor_get", [ggml_tensor_p, ctypes.c_void_p, ctypes.c_size_t, ctypes.c_size_t], None)
def ggml_backend_tensor_get(tensor, data, offset, size):
    """Copy tensor data into host memory starting at the given byte offset."""
    ...


# GGML_API void ggml_backend_tensor_set_2d( struct ggml_tensor * tensor, const void * data, size_t offset, size_t size, size_t n_copies, size_t stride_tensor, size_t stride_data);
@ggml_base_function("ggml_backend_tensor_set_2d", [ggml_tensor_p, ctypes.c_void_p, ctypes.c_size_t, ctypes.c_size_t, ctypes.c_size_t, ctypes.c_size_t, ctypes.c_size_t], None)
def ggml_backend_tensor_set_2d(tensor, data, offset, size, n_copies, stride_tensor, stride_data):
    """Copy strided host data into tensor storage."""
    ...


# GGML_API void ggml_backend_tensor_get_2d(const struct ggml_tensor * tensor, void * data, size_t offset, size_t size, size_t n_copies, size_t stride_tensor, size_t stride_data);
@ggml_base_function("ggml_backend_tensor_get_2d", [ggml_tensor_p, ctypes.c_void_p, ctypes.c_size_t, ctypes.c_size_t, ctypes.c_size_t, ctypes.c_size_t, ctypes.c_size_t], None)
def ggml_backend_tensor_get_2d(tensor, data, offset, size, n_copies, stride_tensor, stride_data):
    """Copy strided tensor data into host memory."""
    ...


# GGML_API void ggml_backend_tensor_memset( struct ggml_tensor * tensor, uint8_t value, size_t offset, size_t size);
@ggml_base_function("ggml_backend_tensor_memset", [ggml_tensor_p, ctypes.c_uint8, ctypes.c_size_t, ctypes.c_size_t], None)
def ggml_backend_tensor_memset(tensor, value, offset, size):
    """Fill a byte range of tensor storage with a value."""
    ...


# GGML_API void ggml_backend_tensor_copy(const struct ggml_tensor * src, struct ggml_tensor * dst);
@ggml_base_function("ggml_backend_tensor_copy", [ggml_tensor_p, ggml_tensor_p], None)
def ggml_backend_tensor_copy(src, dst):
    """Copy tensor data between backend buffers."""
    ...


@ggml_base_function(
    "ggml_backend_tensor_copy_n",
    [ctypes.POINTER(ggml_tensor_p), ctypes.POINTER(ggml_tensor_p), ctypes.c_size_t],
    None,
    required=False,
)
def ggml_backend_tensor_copy_n(srcs, dsts, n_tensors):
    """Copy n_tensors pairs of allocated tensors with matching layouts."""
    ...


@ggml_base_function(
    "ggml_backend_tensor_set_n",
    [ctypes.POINTER(ggml_tensor_p), ctypes.c_void_p, ctypes.POINTER(ctypes.c_size_t),
     ctypes.POINTER(ctypes.c_size_t), ctypes.POINTER(ctypes.c_size_t), ctypes.c_size_t],
    None,
    required=False,
)
def ggml_backend_tensor_set_n(tensors, data, offsets, sizes, data_offsets, n_tensors):
    """Write from a shared host buffer; all offsets and sizes are in bytes.

    Each array must contain n_tensors entries. Tensors must be allocated and
    both tensor and host ranges must fit their buffers.
    """
    ...


@ggml_base_function(
    "ggml_backend_tensor_get_n",
    [ctypes.POINTER(ggml_tensor_p), ctypes.c_void_p, ctypes.POINTER(ctypes.c_size_t),
     ctypes.POINTER(ctypes.c_size_t), ctypes.POINTER(ctypes.c_size_t), ctypes.c_size_t],
    None,
    required=False,
)
def ggml_backend_tensor_get_n(tensors, data, offsets, sizes, data_offsets, n_tensors):
    """Read into a writable host buffer; offsets and sizes are in bytes.

    Each array must contain n_tensors entries. Tensors must be allocated and
    both tensor and host ranges must fit their buffers.
    """
    ...


# GGML_API enum ggml_status ggml_backend_tensor_alloc(ggml_backend_buffer_t buffer, struct ggml_tensor * tensor, void * addr);
@ggml_base_function("ggml_backend_tensor_alloc", [ctypes.c_void_p, ggml_tensor_p, ctypes.c_void_p], ctypes.c_int)
def ggml_backend_tensor_alloc(buffer, tensor, addr):
    """Attach tensor storage at an address within a backend buffer."""
    ...


# GGML_API enum ggml_status ggml_backend_view_init(struct ggml_tensor * tensor);
@ggml_base_function("ggml_backend_view_init", [ggml_tensor_p], ctypes.c_int)
def ggml_backend_view_init(tensor):
    """Initialize the buffer view for a tensor."""
    ...


# GGML_API ggml_backend_graph_plan_t ggml_backend_graph_plan_create(ggml_backend_t backend, struct ggml_cgraph * cgraph);
@ggml_base_function("ggml_backend_graph_plan_create", [ctypes.c_void_p, ctypes.c_void_p], ctypes.c_void_p)
def ggml_backend_graph_plan_create(backend, graph):
    """Create a reusable compute plan; free it with the same backend."""
    ...


# GGML_API void ggml_backend_graph_plan_free (ggml_backend_t backend, ggml_backend_graph_plan_t plan);
@ggml_base_function("ggml_backend_graph_plan_free", [ctypes.c_void_p, ctypes.c_void_p], None)
def ggml_backend_graph_plan_free(backend, plan):
    """Release a compute plan created for this backend."""
    ...


# GGML_API enum ggml_status ggml_backend_graph_plan_compute (ggml_backend_t backend, ggml_backend_graph_plan_t plan);
@ggml_base_function("ggml_backend_graph_plan_compute", [ctypes.c_void_p, ctypes.c_void_p], ctypes.c_int)
def ggml_backend_graph_plan_compute(backend, plan):
    """Execute a graph plan and return a ggml_status value."""
    ...


# GGML_API enum ggml_status ggml_backend_graph_compute (ggml_backend_t backend, struct ggml_cgraph * cgraph);
@ggml_base_function("ggml_backend_graph_compute", [ctypes.c_void_p, ctypes.c_void_p], ctypes.c_int)
def ggml_backend_graph_compute(backend, graph):
    """Execute a graph on this backend and return a ggml_status value."""
    ...


# GGML_API enum ggml_status ggml_backend_graph_compute_async(ggml_backend_t backend, struct ggml_cgraph * cgraph);
@ggml_base_function("ggml_backend_graph_compute_async", [ctypes.c_void_p, ctypes.c_void_p], ctypes.c_int)
def ggml_backend_graph_compute_async(backend, graph):
    """Queue graph execution; synchronize before consuming its results."""
    ...


# Deprecated in ggml-backend.h; use the device versions for new code.
# GGML_API bool ggml_backend_supports_op(ggml_backend_t backend, const struct ggml_tensor * op);
@ggml_base_function("ggml_backend_supports_op", [ctypes.c_void_p, ggml_tensor_p], ctypes.c_bool)
def ggml_backend_supports_op(backend, op):
    """Deprecated backend-level operation check; prefer ggml_backend_dev_supports_op."""
    ...


# GGML_API bool ggml_backend_supports_buft(ggml_backend_t backend, ggml_backend_buffer_type_t buft);
@ggml_base_function("ggml_backend_supports_buft", [ctypes.c_void_p, ctypes.c_void_p], ctypes.c_bool)
def ggml_backend_supports_buft(backend, buft):
    """Deprecated backend-level buffer check; prefer ggml_backend_dev_supports_buft."""
    ...


# GGML_API bool ggml_backend_offload_op(ggml_backend_t backend, const struct ggml_tensor * op);
@ggml_base_function("ggml_backend_offload_op", [ctypes.c_void_p, ggml_tensor_p], ctypes.c_bool)
def ggml_backend_offload_op(backend, op):
    """Deprecated backend-level offload check; prefer ggml_backend_dev_offload_op."""
    ...


# GGML_API void ggml_backend_tensor_copy_async(ggml_backend_t backend_src, ggml_backend_t backend_dst, const struct ggml_tensor * src, struct ggml_tensor * dst);
@ggml_base_function("ggml_backend_tensor_copy_async", [ctypes.c_void_p, ctypes.c_void_p, ggml_tensor_p, ggml_tensor_p], None)
def ggml_backend_tensor_copy_async(backend_src, backend_dst, src, dst):
    """Queue a tensor copy between backends, with synchronous fallback when needed."""
    ...


# // Backend events

# GGML_API ggml_backend_event_t ggml_backend_event_new(ggml_backend_dev_t device);
@ggml_base_function("ggml_backend_event_new", [ctypes.c_void_p], ctypes.c_void_p)
def ggml_backend_event_new(device: ggml_backend_dev_t) -> ggml_backend_event_t:
    """Create an event on a device that supports events."""
    ...


# GGML_API void ggml_backend_event_free(ggml_backend_event_t event);
@ggml_base_function("ggml_backend_event_free", [ctypes.c_void_p], None)
def ggml_backend_event_free(event: ggml_backend_event_t) -> None:
    """Free an event."""
    ...


# GGML_API void ggml_backend_event_record(ggml_backend_event_t event, ggml_backend_t backend);
@ggml_base_function("ggml_backend_event_record", [ctypes.c_void_p, ctypes.c_void_p], None)
def ggml_backend_event_record(event: ggml_backend_event_t, backend: ggml_backend_t) -> None:
    """Record an event after queued backend operations."""
    ...


# GGML_API void ggml_backend_event_synchronize(ggml_backend_event_t event);
@ggml_base_function("ggml_backend_event_synchronize", [ctypes.c_void_p], None)
def ggml_backend_event_synchronize(event: ggml_backend_event_t) -> None:
    """Wait for an event to complete."""
    ...


# GGML_API void ggml_backend_event_wait(ggml_backend_t backend, ggml_backend_event_t event);
@ggml_base_function("ggml_backend_event_wait", [ctypes.c_void_p, ctypes.c_void_p], None)
def ggml_backend_event_wait(backend: ggml_backend_t, event: ggml_backend_event_t) -> None:
    """Make a backend wait for an event."""
    ...


# //
# // Backend device
# //

# enum ggml_backend_dev_type {
#     // CPU device using system memory
#     GGML_BACKEND_DEVICE_TYPE_CPU,
#     // GPU device using dedicated memory
#     GGML_BACKEND_DEVICE_TYPE_GPU,
#     // integrated GPU device using host memory
#     GGML_BACKEND_DEVICE_TYPE_IGPU,
#     // accelerator devices intended to be used together with the CPU backend (e.g. BLAS or AMX)
#     GGML_BACKEND_DEVICE_TYPE_ACCEL,
#     // "meta" device wrapping multiple other devices for tensor parallelism
#     GGML_BACKEND_DEVICE_TYPE_META,
# };
class GGMLBackendDevType(enum.IntEnum):
    GGML_BACKEND_DEVICE_TYPE_CPU   = 0  # CPU device using system memory
    GGML_BACKEND_DEVICE_TYPE_GPU   = 1  # GPU device using dedicated memory
    GGML_BACKEND_DEVICE_TYPE_IGPU  = 2  # integrated GPU device using host memory
    GGML_BACKEND_DEVICE_TYPE_ACCEL = 3  # accelerator devices intended to be used together with the CPU backend (e.g. BLAS or AMX)
    GGML_BACKEND_DEVICE_TYPE_META  = 4  # "meta" device wrapping multiple other devices for tensor parallelism

# // functionality supported by the device
# struct ggml_backend_dev_caps {
#     // asynchronous operations
#     bool async;
#     // pinned host buffer
#     bool host_buffer;
#     // creating buffers from host ptr
#     bool buffer_from_host_ptr;
#     // event synchronization
#     bool events;
#     // mmap is supported for loading
#     bool mmap_support;
# };
class GGMLBackendDevCaps(ctypes.Structure):
    _fields_ = [
        ("async_", ctypes.c_bool),
        ("host_buffer", ctypes.c_bool),
        ("buffer_from_host_ptr", ctypes.c_bool),
        ("events", ctypes.c_bool),
        ("mmap_support", ctypes.c_bool),
    ]

# // all the device properties
# struct ggml_backend_dev_props {
#     // device name
#     const char * name;
#     // device description
#     const char * description;
#     // device free memory in bytes
#     size_t memory_free;
#     // device total memory in bytes
#     size_t memory_total;
#     // device type
#     enum ggml_backend_dev_type type;
#     // device id
#     //   for PCI devices, this should be the lower-case PCI bus id formatted as "domain:bus:device.function" (e.g. "0000:c1:00.0")
#     //   if the id is unknown, this should be NULL
#     const char * device_id;
#     // device capabilities
#     struct ggml_backend_dev_caps caps;
# };
class GGMLBackendDevProps(ctypes.Structure):
    _fields_ = [
        ("name", ctypes.c_char_p),
        ("description", ctypes.c_char_p),
        ("memory_free", ctypes.c_size_t),
        ("memory_total", ctypes.c_size_t),
        ("type", ctypes.c_int),
        ("device_id", ctypes.c_char_p),
        ("caps", GGMLBackendDevCaps),
    ]


ggml_backend_dev_type_t = NewType(
    "ggml_backend_dev_type_t",
    ctypes.c_void_p,
)


# GGML_API const char * ggml_backend_dev_name(ggml_backend_dev_t device);
@ggml_base_function("ggml_backend_dev_name", [ctypes.c_void_p], ctypes.c_char_p)
def ggml_backend_dev_name(device: ggml_backend_dev_t) -> bytes:
    """Get the device name (for example, CUDA0 or RPC0)."""
    ...


# GGML_API const char * ggml_backend_dev_description(ggml_backend_dev_t device);
@ggml_base_function("ggml_backend_dev_description", [ctypes.c_void_p], ctypes.c_char_p)
def ggml_backend_dev_description(device: ggml_backend_dev_t) -> bytes:
    """Get the device description."""
    ...


# GGML_API void ggml_backend_dev_memory(ggml_backend_dev_t device, size_t * free, size_t * total);
@ggml_base_function("ggml_backend_dev_memory", [ctypes.c_void_p, ctypes.POINTER(ctypes.c_size_t), ctypes.POINTER(ctypes.c_size_t)], None)
def ggml_backend_dev_memory(device: ggml_backend_dev_t, free: ctypes.POINTER(ctypes.c_size_t), total: ctypes.POINTER(ctypes.c_size_t)) -> None:
    """Read free and total device memory."""
    ...


# GGML_API enum ggml_backend_dev_type ggml_backend_dev_type(ggml_backend_dev_t device);
@ggml_base_function("ggml_backend_dev_type", [ctypes.c_void_p], ctypes.c_int)
def ggml_backend_dev_type(device: ggml_backend_dev_t) -> int:
    """Get the device type from GGMLBackendDevType."""
    ...


# GGML_API ggml_backend_reg_t ggml_backend_dev_backend_reg(ggml_backend_dev_t device);
@ggml_base_function("ggml_backend_dev_backend_reg", [ctypes.c_void_p], ctypes.c_void_p)
def ggml_backend_dev_backend_reg(device: ggml_backend_dev_t) -> ggml_backend_reg_t:
    """Get the backend registration that owns a device."""
    ...


# GGML_API void ggml_backend_dev_get_props(ggml_backend_dev_t device, struct ggml_backend_dev_props * props);
@ggml_base_function("ggml_backend_dev_get_props", [ctypes.c_void_p, ctypes.POINTER(GGMLBackendDevProps)], None)
def ggml_backend_dev_get_props(device: ggml_backend_dev_t, props: ctypes.POINTER(GGMLBackendDevProps)) -> None:
    """Read device properties, including its physical device ID when available."""
    ...


# GGML_API ggml_backend_t ggml_backend_dev_init(ggml_backend_dev_t device, const char * params);
@ggml_base_function("ggml_backend_dev_init", [ctypes.c_void_p, ctypes.c_char_p], ctypes.c_void_p)
def ggml_backend_dev_init(device: ggml_backend_dev_t, params: Optional[bytes]) -> ggml_backend_t:
    """Create a backend on the selected device; release it with ggml_backend_free."""
    ...


# GGML_API ggml_backend_buffer_type_t ggml_backend_dev_buffer_type(ggml_backend_dev_t device);
@ggml_base_function("ggml_backend_dev_buffer_type", [ctypes.c_void_p], ctypes.c_void_p)
def ggml_backend_dev_buffer_type(device: ggml_backend_dev_t) -> ggml_backend_buffer_type_t:
    """Get the device's default buffer type."""
    ...


# GGML_API ggml_backend_buffer_type_t ggml_backend_dev_host_buffer_type(ggml_backend_dev_t device);
@ggml_base_function("ggml_backend_dev_host_buffer_type", [ctypes.c_void_p], ctypes.c_void_p)
def ggml_backend_dev_host_buffer_type(device: ggml_backend_dev_t) -> ggml_backend_buffer_type_t:
    """Get the device's host buffer type, if supported."""
    ...


# GGML_API ggml_backend_buffer_t ggml_backend_dev_buffer_from_host_ptr(ggml_backend_dev_t device, void * ptr, size_t size, size_t max_tensor_size);
@ggml_base_function("ggml_backend_dev_buffer_from_host_ptr", [ctypes.c_void_p, ctypes.c_void_p, ctypes.c_size_t, ctypes.c_size_t], ctypes.c_void_p)
def ggml_backend_dev_buffer_from_host_ptr(device: ggml_backend_dev_t, ptr: ctypes.c_void_p, size: int, max_tensor_size: int) -> ggml_backend_buffer_t:
    """Wrap host memory on a capable device; the caller retains the host allocation."""
    ...


# GGML_API bool ggml_backend_dev_supports_op(ggml_backend_dev_t device, const struct ggml_tensor * op);
@ggml_base_function("ggml_backend_dev_supports_op", [ctypes.c_void_p, ggml_tensor_p], ctypes.c_bool)
def ggml_backend_dev_supports_op(device: ggml_backend_dev_t, op: ggml_tensor_p) -> bool:
    """Check whether a device supports a tensor operation."""
    ...


# GGML_API bool ggml_backend_dev_supports_buft(ggml_backend_dev_t device, ggml_backend_buffer_type_t buft);
@ggml_base_function("ggml_backend_dev_supports_buft", [ctypes.c_void_p, ctypes.c_void_p], ctypes.c_bool)
def ggml_backend_dev_supports_buft(device: ggml_backend_dev_t, buft: ggml_backend_buffer_type_t) -> bool:
    """Check whether a device supports a buffer type."""
    ...


# GGML_API bool ggml_backend_dev_offload_op(ggml_backend_dev_t device, const struct ggml_tensor * op);
@ggml_base_function("ggml_backend_dev_offload_op", [ctypes.c_void_p, ggml_tensor_p], ctypes.c_bool)
def ggml_backend_dev_offload_op(device: ggml_backend_dev_t, op: ggml_tensor_p) -> bool:
    """Check whether an operation should be offloaded to the device."""
    ...

# // Backend (reg)

# GGML_API const char * ggml_backend_reg_name(ggml_backend_reg_t reg);
@ggml_base_function("ggml_backend_reg_name", [ctypes.c_void_p], ctypes.c_char_p)
def ggml_backend_reg_name(reg: ggml_backend_reg_t) -> bytes:
    """Get the backend registration name."""
    ...


# GGML_API size_t ggml_backend_reg_dev_count(ggml_backend_reg_t reg);
@ggml_base_function("ggml_backend_reg_dev_count", [ctypes.c_void_p], ctypes.c_size_t)
def ggml_backend_reg_dev_count(reg: ggml_backend_reg_t) -> int:
    """Get the number of devices exposed by a backend registration."""
    ...


# GGML_API ggml_backend_dev_t ggml_backend_reg_dev_get(ggml_backend_reg_t reg, size_t index);
@ggml_base_function("ggml_backend_reg_dev_get", [ctypes.c_void_p, ctypes.c_size_t], ctypes.c_void_p)
def ggml_backend_reg_dev_get(reg: ggml_backend_reg_t, index: int) -> ggml_backend_dev_t:
    """Get a device exposed by a backend registration."""
    ...


# GGML_API void * ggml_backend_reg_get_proc_address(ggml_backend_reg_t reg, const char * name);
@ggml_base_function("ggml_backend_reg_get_proc_address", [ctypes.c_void_p, ctypes.c_char_p], ctypes.c_void_p)
def ggml_backend_reg_get_proc_address(reg: ggml_backend_reg_t, name: bytes) -> Optional[int]:
    """Get a backend-specific function pointer, or None if unavailable."""
    ...


# Cast the address returned by ggml_backend_reg_get_proc_address to this type.
# Keep the bootstrap callback and its user data alive for the native call.
# typedef bool (*ggml_backend_comm_bootstrap_callback)(void * user_data, const void * send_buf, void * recv_buf, size_t size);
ggml_backend_comm_bootstrap_callback = ctypes.CFUNCTYPE(
    ctypes.c_bool, ctypes.c_void_p, ctypes.c_void_p, ctypes.c_void_p, ctypes.c_size_t,
)
# typedef void * (*ggml_backend_comm_init_rank_t)(ggml_backend_t backend, int rank, int world_size, ggml_backend_comm_bootstrap_callback bootstrap_callback, void * bootstrap_callback_data);
ggml_backend_comm_init_rank_t = ctypes.CFUNCTYPE(
    ctypes.c_void_p, ctypes.c_void_p, ctypes.c_int, ctypes.c_int,
    ggml_backend_comm_bootstrap_callback, ctypes.c_void_p,
)


# //
# // Backend registry
# //

# GGML_API void ggml_backend_register(ggml_backend_reg_t reg);
@ggml_function("ggml_backend_register", [ctypes.c_void_p], None)
def ggml_backend_register(reg: ctypes.c_void_p):
    """
    Register ggml backend
    """
    ...

# GGML_API void ggml_backend_device_register(ggml_backend_dev_t device);
@ggml_function("ggml_backend_device_register", [ctypes.c_void_p], None)
def ggml_backend_device_register(device: ctypes.c_void_p):
    """
    Register ggml backend device
    """
    ...


# // Backend (reg) enumeration

# GGML_API size_t             ggml_backend_reg_count(void);
@ggml_function("ggml_backend_reg_count", [], ctypes.c_size_t)
def ggml_backend_reg_count() -> ctypes.c_size_t:
    """
    Get ggml_backend_reg count
    """
    ...

# GGML_API ggml_backend_reg_t ggml_backend_reg_get(size_t index);
@ggml_function("ggml_backend_reg_get", [ctypes.c_size_t], ctypes.c_void_p)
def ggml_backend_reg_get(index: ctypes.c_size_t) -> ggml_backend_reg_t:
    """
    Get ggml_backend_reg by index
    """

# GGML_API ggml_backend_reg_t ggml_backend_reg_by_name(const char * name);
@ggml_function("ggml_backend_reg_by_name", [ctypes.c_char_p], ctypes.c_void_p)
def ggml_backend_reg_by_name(name: ctypes.c_char_p) -> ggml_backend_reg_t:
    """
    Get ggml_backend_reg by name
    """
    ...

# // Device enumeration

# GGML_API size_t             ggml_backend_dev_count(void);
@ggml_function("ggml_backend_dev_count", [], ctypes.c_size_t)
def ggml_backend_dev_count() -> ctypes.c_size_t:
    """
    Get ggml_backend_dev count
    """
    ...

# GGML_API ggml_backend_dev_t ggml_backend_dev_get(size_t index);
@ggml_function("ggml_backend_dev_get", [ctypes.c_size_t], ctypes.c_void_p)
def ggml_backend_dev_get(index: ctypes.c_size_t) -> ggml_backend_dev_t:
    """
    Get ggml_backend_dev by index
    """
    ...

# GGML_API ggml_backend_dev_t ggml_backend_dev_by_name(const char * name);
@ggml_function("ggml_backend_dev_by_name", [ctypes.c_char_p], ctypes.c_void_p)
def ggml_backend_dev_by_name(name: ctypes.c_char_p) -> ggml_backend_dev_t:
    """
    Get ggml_backend_dev by name
    """
    ...

# GGML_API ggml_backend_dev_t ggml_backend_dev_by_type(enum ggml_backend_dev_type type);
@ggml_function("ggml_backend_dev_by_type", [ctypes.c_int32], ctypes.c_void_p)
def ggml_backend_dev_by_type(type: ctypes.c_int32) -> ggml_backend_dev_t:
    """
    Get ggml_backend_dev by type
    """
    ...

# // Direct backend (stream) initialization

# // = ggml_backend_dev_init(ggml_backend_dev_by_name(name), params)
# GGML_API ggml_backend_t ggml_backend_init_by_name(const char * name, const char * params);
@ggml_function("ggml_backend_init_by_name", [ctypes.c_char_p, ctypes.c_char_p], ctypes.c_void_p)
def ggml_backend_init_by_name(name: ctypes.c_char_p, params: ctypes.c_char_p) -> ggml_backend_t:
    """
    = ggml_backend_dev_init(ggml_backend_dev_by_name(name), params)
    """
    ...


# // = ggml_backend_dev_init(ggml_backend_dev_by_type(type), params)
# GGML_API ggml_backend_t ggml_backend_init_by_type(enum ggml_backend_dev_type type, const char * params);
@ggml_function("ggml_backend_init_by_type", [ctypes.c_int32, ctypes.c_char_p], ctypes.c_void_p)
def ggml_backend_init_by_type(type: ctypes.c_int32, params: ctypes.c_char_p) -> ggml_backend_t:
    """
    = ggml_backend_dev_init(ggml_backend_dev_by_type(type), params)
    """
    ...


# // = ggml_backend_dev_init(ggml_backend_dev_by_type(GPU) OR ggml_backend_dev_by_type(CPU), NULL)
# GGML_API ggml_backend_t ggml_backend_init_best(void);
@ggml_function("ggml_backend_init_best", [], ctypes.c_void_p)
def ggml_backend_init_best() -> ggml_backend_t:
    """
    = ggml_backend_dev_init(ggml_backend_dev_by_type(GPU) OR ggml_backend_dev_by_type(CPU), NULL)
    """
    ...


# // Load a backend from a dynamic library and register it
# GGML_API ggml_backend_reg_t ggml_backend_load(const char * path);
@ggml_function("ggml_backend_load", [ctypes.c_char_p], ctypes.c_void_p)
def ggml_backend_load(path: ctypes.c_char_p) -> ggml_backend_reg_t:
    """
    Load a backend from a dynamic library and register it
    """
    ...


# // Unload a backend if loaded dynamically and unregister it
# GGML_API void               ggml_backend_unload(ggml_backend_reg_t reg);
@ggml_function("ggml_backend_unload", [ctypes.c_void_p], None)
def ggml_backend_unload(reg: ggml_backend_reg_t):
    """
    Unload a backend if loaded dynamically and unregister it
    """
    ...


# // Load all known backends from dynamic libraries

# GGML_API void               ggml_backend_load_all(void);
@ggml_function("ggml_backend_load_all", [], None)
def ggml_backend_load_all():
    """
    Load all known backends from dynamic libraries
    """
    ...


# GGML_API void               ggml_backend_load_all_from_path(const char * dir_path);
@ggml_function("ggml_backend_load_all_from_path", [ctypes.c_char_p], None)
def ggml_backend_load_all_from_path(dir_path: ctypes.c_char_p):
    """
    Load all known backends from path
    """
    ...


# // Meta backend
# Meta split axis is an enum (C int); the returned string is owned by ggml.
# GGML_API const char * ggml_backend_meta_split_axis_name(enum ggml_backend_meta_split_axis split_axis);
@ggml_base_function("ggml_backend_meta_split_axis_name", [ctypes.c_int], ctypes.c_char_p)
def ggml_backend_meta_split_axis_name(split_axis):
    """Get the ggml-owned name of a meta split axis."""
    ...


# // Backend scheduler
# typedef struct ggml_backend_sched * ggml_backend_sched_t;
ggml_backend_sched_t = NewType(
    "ggml_backend_sched_t",
    ctypes.c_void_p,
)


# Keep the backend and buffer-type arrays alive for ggml_backend_sched_new.
# The backend instances must outlive the scheduler.
# // Evaluation callback for each node in the graph (set with ggml_backend_sched_set_eval_callback)
# // when ask == true, the scheduler wants to know if the user wants to observe this node
# // this allows the scheduler to batch nodes together in order to evaluate them in a single call
# // when ask == false, the scheduler passes the node to the user; false cancels computation
# typedef bool (*ggml_backend_sched_eval_callback)(struct ggml_tensor * t, bool ask, void * user_data);
ggml_backend_sched_eval_callback = ctypes.CFUNCTYPE(
    ctypes.c_bool, ggml_tensor_p, ctypes.c_bool, ctypes.c_void_p
)


# typedef void (*ggml_backend_sched_realloc_callback)(ggml_backend_sched_t sched,
#     struct ggml_cgraph * graph, bool backend_ids_changed, bool graph_size_changed, void * user_data);
ggml_backend_sched_realloc_callback = ctypes.CFUNCTYPE(
    None, ctypes.c_void_p, ctypes.c_void_p, ctypes.c_bool, ctypes.c_bool,
    ctypes.c_void_p,
)


# GGML_API ggml_backend_sched_t ggml_backend_sched_new(ggml_backend_t * backends, ggml_backend_buffer_type_t * bufts, int n_backends, size_t graph_size, bool parallel, bool op_offload);
@ggml_base_function("ggml_backend_sched_new", [ctypes.POINTER(ctypes.c_void_p), ctypes.POINTER(ctypes.c_void_p), ctypes.c_int, ctypes.c_size_t, ctypes.c_bool, ctypes.c_bool], ctypes.c_void_p)
def ggml_backend_sched_new(backends, bufts, n_backends, graph_size, parallel, op_offload):
    """Create a scheduler; its backends must remain alive until the scheduler is freed."""
    ...


# GGML_API void ggml_backend_sched_free(ggml_backend_sched_t sched);
@ggml_base_function("ggml_backend_sched_free", [ctypes.c_void_p], None)
def ggml_backend_sched_free(sched):
    """Release the scheduler before freeing its backends."""
    ...


# GGML_API void ggml_backend_sched_reserve_size(ggml_backend_sched_t sched, struct ggml_cgraph * measure_graph, size_t * sizes);
@ggml_base_function("ggml_backend_sched_reserve_size", [ctypes.c_void_p, ctypes.c_void_p, ctypes.POINTER(ctypes.c_size_t)], None)
def ggml_backend_sched_reserve_size(sched, measure_graph, sizes):
    """Reserve scheduler buffers for a measure graph and report their sizes."""
    ...


# GGML_API bool ggml_backend_sched_reserve(ggml_backend_sched_t sched, struct ggml_cgraph * measure_graph);
@ggml_base_function("ggml_backend_sched_reserve", [ctypes.c_void_p, ctypes.c_void_p], ctypes.c_bool)
def ggml_backend_sched_reserve(sched, measure_graph):
    """Reserve scheduler buffers for a measure graph; return whether it succeeded."""
    ...


# GGML_API int ggml_backend_sched_get_n_backends(ggml_backend_sched_t sched);
@ggml_base_function("ggml_backend_sched_get_n_backends", [ctypes.c_void_p], ctypes.c_int)
def ggml_backend_sched_get_n_backends(sched):
    """Get the number of backends managed by the scheduler."""
    ...


# GGML_API ggml_backend_t ggml_backend_sched_get_backend(ggml_backend_sched_t sched, int i);
@ggml_base_function("ggml_backend_sched_get_backend", [ctypes.c_void_p, ctypes.c_int], ctypes.c_void_p)
def ggml_backend_sched_get_backend(sched, i):
    """Get the backend at the given scheduler index."""
    ...


# GGML_API int ggml_backend_sched_get_n_splits(ggml_backend_sched_t sched);
@ggml_base_function("ggml_backend_sched_get_n_splits", [ctypes.c_void_p], ctypes.c_int)
def ggml_backend_sched_get_n_splits(sched):
    """Get the split count for the last scheduled graph."""
    ...


# GGML_API int ggml_backend_sched_get_n_copies(ggml_backend_sched_t sched);
@ggml_base_function("ggml_backend_sched_get_n_copies", [ctypes.c_void_p], ctypes.c_int)
def ggml_backend_sched_get_n_copies(sched):
    """Get the copy count used for the last scheduled graph."""
    ...


# GGML_API ggml_backend_buffer_type_t ggml_backend_sched_get_buffer_type(ggml_backend_sched_t sched, ggml_backend_t backend);
@ggml_base_function("ggml_backend_sched_get_buffer_type", [ctypes.c_void_p, ctypes.c_void_p], ctypes.c_void_p)
def ggml_backend_sched_get_buffer_type(sched, backend):
    """Get the buffer type selected for a backend in the scheduler."""
    ...


# GGML_API size_t ggml_backend_sched_get_buffer_size(ggml_backend_sched_t sched, ggml_backend_t backend);
@ggml_base_function("ggml_backend_sched_get_buffer_size", [ctypes.c_void_p, ctypes.c_void_p], ctypes.c_size_t)
def ggml_backend_sched_get_buffer_size(sched, backend):
    """Get the allocated scheduler buffer size for a backend."""
    ...


# GGML_API void ggml_backend_sched_set_tensor_backend(ggml_backend_sched_t sched, struct ggml_tensor * node, ggml_backend_t backend);
@ggml_base_function("ggml_backend_sched_set_tensor_backend", [ctypes.c_void_p, ggml_tensor_p, ctypes.c_void_p], None)
def ggml_backend_sched_set_tensor_backend(sched, node, backend):
    """Assign a graph node to a backend before graph allocation."""
    ...


# GGML_API ggml_backend_t ggml_backend_sched_get_tensor_backend(ggml_backend_sched_t sched, struct ggml_tensor * node);
@ggml_base_function("ggml_backend_sched_get_tensor_backend", [ctypes.c_void_p, ggml_tensor_p], ctypes.c_void_p)
def ggml_backend_sched_get_tensor_backend(sched, node):
    """Get the backend assigned to a graph node."""
    ...


# GGML_API void ggml_backend_sched_split_graph(ggml_backend_sched_t sched, struct ggml_cgraph * graph);
@ggml_base_function("ggml_backend_sched_split_graph", [ctypes.c_void_p, ctypes.c_void_p], None)
def ggml_backend_sched_split_graph(sched, graph):
    """Split a graph across backends without allocating its tensors."""
    ...


# GGML_API bool ggml_backend_sched_alloc_graph(ggml_backend_sched_t sched, struct ggml_cgraph * graph);
@ggml_base_function("ggml_backend_sched_alloc_graph", [ctypes.c_void_p, ctypes.c_void_p], ctypes.c_bool)
def ggml_backend_sched_alloc_graph(sched, graph):
    """Allocate tensors for a scheduled graph; return whether it succeeded."""
    ...


# GGML_API enum ggml_status ggml_backend_sched_graph_compute(ggml_backend_sched_t sched, struct ggml_cgraph * graph);
@ggml_base_function("ggml_backend_sched_graph_compute", [ctypes.c_void_p, ctypes.c_void_p], ctypes.c_int)
def ggml_backend_sched_graph_compute(sched, graph):
    """Allocate if needed and compute the graph; return a ggml_status value."""
    ...


# GGML_API enum ggml_status ggml_backend_sched_graph_compute_async(ggml_backend_sched_t sched, struct ggml_cgraph * graph);
@ggml_base_function("ggml_backend_sched_graph_compute_async", [ctypes.c_void_p, ctypes.c_void_p], ctypes.c_int)
def ggml_backend_sched_graph_compute_async(sched, graph):
    """Queue scheduler graph computation; synchronize before reading results."""
    ...


# GGML_API void ggml_backend_sched_synchronize(ggml_backend_sched_t sched);
@ggml_base_function("ggml_backend_sched_synchronize", [ctypes.c_void_p], None)
def ggml_backend_sched_synchronize(sched):
    """Wait for all queued scheduler work to finish."""
    ...


# GGML_API void ggml_backend_sched_reset(ggml_backend_sched_t sched);
@ggml_base_function("ggml_backend_sched_reset", [ctypes.c_void_p], None)
def ggml_backend_sched_reset(sched):
    """Reset assignments and allocations; previously allocated tensor data pointers become invalid."""
    ...


# Keep callback alive until the scheduler is freed or the callback is replaced.
# GGML_API void ggml_backend_sched_set_eval_callback(ggml_backend_sched_t sched, ggml_backend_sched_eval_callback callback, void * user_data);
@ggml_base_function("ggml_backend_sched_set_eval_callback", [ctypes.c_void_p, ggml_backend_sched_eval_callback, ctypes.c_void_p], None)
def ggml_backend_sched_set_eval_callback(sched, callback, user_data):
    """Set a node callback; keep the CFUNCTYPE object alive until replaced or freed."""
    ...


# GGML_API void ggml_backend_sched_set_realloc_callback(ggml_backend_sched_t sched,
#     ggml_backend_sched_realloc_callback callback, void * user_data);
@ggml_base_function(
    "ggml_backend_sched_set_realloc_callback",
    [ctypes.c_void_p, ggml_backend_sched_realloc_callback, ctypes.c_void_p],
    None,
    required=False,
)
def ggml_backend_sched_set_realloc_callback(sched, callback, user_data):
    """Observe compute-buffer reallocations on a caller-owned scheduler.

    The callback receives borrowed scheduler/graph pointers, backend-assignment
    and graph-size change flags, and user_data. Keep the callback and user_data
    alive until replaced or the scheduler is freed. A null callback instance
    unregisters it. Older libraries without this symbol raise RuntimeError.
    """
    ...


# // CPU buffer types are always available

# GGML_API ggml_backend_buffer_t      ggml_backend_cpu_buffer_from_ptr(void * ptr, size_t size);
@ggml_base_function(
    "ggml_backend_cpu_buffer_from_ptr",
    [ctypes.c_void_p, ctypes.c_size_t],
    ctypes.c_void_p,
)
def ggml_backend_cpu_buffer_from_ptr(
    ptr: ctypes.c_void_p,
    size: ctypes.c_size_t
) -> ggml_backend_buffer_t:
    """
    Wrap caller-owned host memory in a CPU backend buffer.
    The host allocation must remain valid until the buffer is freed.
    Its address must satisfy ggml_backend_buft_get_alignment() for the CPU
    buffer type; ordinary ctypes arrays do not guarantee this alignment.
    """
    ...


# GGML_API ggml_backend_buffer_type_t ggml_backend_cpu_buffer_type(void);
@ggml_base_function(
    "ggml_backend_cpu_buffer_type",
    [],
    ctypes.c_void_p,
)
def ggml_backend_cpu_buffer_type() -> ggml_backend_buffer_type_t:
    """
    Return the CPU backend buffer type.
    """
    ...


# //
# // GGML internal header from ggml-impl.h
# //

# typedef uint32_t ggml_bitset_t;
ggml_bitset_t = ctypes.c_uint32

# // computation graph

# enum ggml_cgraph_eval_order {
#     GGML_CGRAPH_EVAL_ORDER_LEFT_TO_RIGHT = 0,
#     GGML_CGRAPH_EVAL_ORDER_RIGHT_TO_LEFT,
#     GGML_CGRAPH_EVAL_ORDER_COUNT
# };
class GGMLCgraphEvalOrder(enum.IntEnum):
    GGML_CGRAPH_EVAL_ORDER_LEFT_TO_RIGHT = 0
    GGML_CGRAPH_EVAL_ORDER_RIGHT_TO_LEFT = 1
    GGML_CGRAPH_EVAL_ORDER_COUNT = 2


# struct ggml_hash_set {
#     size_t size;
#     ggml_bitset_t * used;       // whether or not the keys are in use i.e. set
#     struct ggml_tensor ** keys; // actual tensors in the set, keys[i] is only defined if ggml_bitset_get(used, i)
# };
class ggml_hash_set(ctypes.Structure):
    if TYPE_CHECKING:
        size: int
        used: ctypes.POINTER(ggml_bitset_t)  # type: ignore
        keys: ctypes.POINTER(ggml_tensor_p)  # type: ignore

    _fields_ = [
        ("size", ctypes.c_size_t),
        ("used", ctypes.POINTER(ggml_bitset_t)),
        ("keys", ctypes.POINTER(ggml_tensor_p)),
    ]


# struct ggml_cgraph {
#     int size;    // maximum number of nodes/leafs/grads/grad_accs
#     int n_nodes; // number of nodes currently in use
#     int n_leafs; // number of leafs currently in use

#     struct ggml_tensor ** nodes;     // tensors with data that can change if the graph is evaluated
#     struct ggml_tensor ** grads;     // the outputs of these tensors are the gradients of the nodes
#     struct ggml_tensor ** grad_accs; // accumulators for node gradients
#     struct ggml_tensor ** leafs;     // tensors with constant data
#     int32_t             * use_counts;// number of uses of each tensor, indexed by hash table slot

#     struct ggml_hash_set visited_hash_set;

#     enum ggml_cgraph_eval_order order;
#     uint64_t uid; // zero means no graph identity is assigned
# };
class ggml_cgraph(ctypes.Structure):
    if TYPE_CHECKING:
        size: int
        n_nodes: int
        n_leafs: int
        nodes: ctypes.POINTER(ggml_tensor_p)        # type: ignore
        grads: ctypes.POINTER(ggml_tensor_p)        # type: ignore
        grad_accs: ctypes.POINTER(ggml_tensor_p)    # type: ignore
        leafs: ctypes.POINTER(ggml_tensor_p)        # type: ignore
        use_counts: ctypes.POINTER(ctypes.c_int32)  # type: ignore
        visited_hash_set: ggml_hash_set
        order: int
        uid: int

    _fields_ = [
        ("size", ctypes.c_int),
        ("n_nodes", ctypes.c_int),
        ("n_leafs", ctypes.c_int),
        ("nodes", ctypes.POINTER(ggml_tensor_p)),
        ("grads", ctypes.POINTER(ggml_tensor_p)),
        ("grad_accs", ctypes.POINTER(ggml_tensor_p)),
        ("leafs", ctypes.POINTER(ggml_tensor_p)),
        ("use_counts", ctypes.POINTER(ctypes.c_int32)),
        ("visited_hash_set", ggml_hash_set),
        ("order", ctypes.c_int),
        ("uid", ctypes.c_uint64),
    ]