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# Copyright (c) 2016-2025 The Regents of the University of Michigan
# Part of GSD, released under the BSD 2-Clause License.
from libc.stdint cimport uint8_t, int8_t, uint16_t, int16_t, uint32_t, int32_t,\
uint64_t, int64_t
cdef extern from "gsd.h" nogil:
cdef enum gsd_type:
GSD_TYPE_UINT8=1
GSD_TYPE_UINT16
GSD_TYPE_UINT32
GSD_TYPE_UINT64
GSD_TYPE_INT8
GSD_TYPE_INT16
GSD_TYPE_INT32
GSD_TYPE_INT64
GSD_TYPE_FLOAT
GSD_TYPE_DOUBLE
GSD_TYPE_CHARACTER
cdef enum gsd_open_flag:
GSD_OPEN_READWRITE=1
GSD_OPEN_READONLY
GSD_OPEN_APPEND
cdef enum gsd_error:
GSD_SUCCESS = 0
GSD_ERROR_IO = -1
GSD_ERROR_INVALID_ARGUMENT = -2
GSD_ERROR_NOT_A_GSD_FILE = -3
GSD_ERROR_INVALID_GSD_FILE_VERSION = -4
GSD_ERROR_FILE_CORRUPT = -5
GSD_ERROR_MEMORY_ALLOCATION_FAILED = -6
GSD_ERROR_NAMELIST_FULL = -7
GSD_ERROR_FILE_MUST_BE_WRITABLE = -8
GSD_ERROR_FILE_MUST_BE_READABLE = -9
cdef struct gsd_header:
uint64_t magic
uint32_t gsd_version
char application[64]
char schema[64]
uint32_t schema_version
uint64_t index_location
uint64_t index_allocated_entries
uint64_t namelist_location
uint64_t namelist_allocated_entries
char reserved[80]
cdef struct gsd_index_entry:
uint64_t frame
uint64_t N
int64_t location
uint32_t M
uint16_t id
uint8_t type
uint8_t flags
cdef struct gsd_namelist_entry:
char name[64]
cdef struct gsd_index_buffer:
gsd_index_entry *data
size_t size
size_t reserved
void *mapped_data
size_t mapped_len
cdef struct gsd_name_id_map:
void *v
size_t size
cdef struct gsd_write_buffer:
char *data
size_t size
size_t reserved
cdef struct gsd_handle:
int fd
gsd_header header
gsd_index_buffer file_index
gsd_index_buffer frame_index
gsd_index_buffer buffer_index
gsd_write_buffer write_buffer
gsd_namelist_entry *namelist
uint64_t namelist_num_entries
uint64_t cur_frame
int64_t file_size
gsd_open_flag open_flags
gsd_name_id_map name_map
uint64_t namelist_written_entries
uint32_t gsd_make_version(unsigned int major, unsigned int minor)
int gsd_create(const char *fname,
const char *application,
const char *schema,
uint32_t schema_version)
int gsd_create_and_open(gsd_handle* handle,
const char *fname,
const char *application,
const char *schema,
uint32_t schema_version,
const gsd_open_flag flags,
int exclusive_create)
int gsd_open(gsd_handle* handle, const char *fname,
const gsd_open_flag flags)
int gsd_truncate(gsd_handle* handle)
int gsd_close(gsd_handle* handle)
int gsd_end_frame(gsd_handle* handle)
int gsd_flush(gsd_handle* handle)
int gsd_write_chunk(gsd_handle* handle,
const char *name,
gsd_type type,
uint64_t N,
uint8_t M,
uint8_t flags,
const void *data)
const gsd_index_entry* gsd_find_chunk(gsd_handle* handle,
uint64_t frame,
const char *name)
int gsd_read_chunk(gsd_handle* handle, void* data,
const gsd_index_entry* chunk)
uint64_t gsd_get_nframes(gsd_handle* handle)
size_t gsd_sizeof_type(gsd_type type)
const char *gsd_find_matching_chunk_name(gsd_handle* handle,
const char *match,
const char *prev)
int gsd_upgrade(gsd_handle *handle)
uint64_t gsd_get_maximum_write_buffer_size(gsd_handle* handle)
int gsd_set_maximum_write_buffer_size(gsd_handle* handle, uint64_t size)
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