mirror of
https://github.com/Unidata/netcdf-c.git
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5ca78309cc
contain as little file-type specific info as possible. It modifies especially libsrc so that all of the netcdf-3 data that used to be in struct NC is now kept in a separate chunk of data pointed to by the struct NC. This makes all of current protocols consistent: netcdf-3, netcdf-4, and dap.
381 lines
8.3 KiB
C
381 lines
8.3 KiB
C
/*
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* Copyright 1996, University Corporation for Atmospheric Research
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* See netcdf/COPYRIGHT file for copying and redistribution conditions.
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*/
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#ifndef _NC3INTERNAL_
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#define _NC3INTERNAL_
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/*
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* netcdf library 'private' data structures, objects and interfaces
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*/
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#include <config.h>
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#include <stddef.h> /* size_t */
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#ifndef HAVE_STDINT_H
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# include "pstdint.h" /* attempts to define uint32_t etc portably */
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#else
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# include <stdint.h>
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#endif /* HAVE_STDINT_H */
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#include <sys/types.h> /* off_t */
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#ifdef USE_PARALLEL
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#include <netcdf_par.h>
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#else
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#include <netcdf.h>
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#endif /* USE_PARALLEL */
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/* Always needed */
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#include "nc.h"
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/*#ifndef HAVE_SSIZE_T
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#define ssize_t int
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#endif*/
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#ifndef NC_ARRAY_GROWBY
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#define NC_ARRAY_GROWBY 4
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#endif
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/*
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* The extern size of an empty
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* netcdf version 1 file.
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* The initial value of ncp->xsz.
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*/
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#define MIN_NC_XSZ 32
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/* Forward */
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struct ncio;
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typedef struct NC3_INFO NC3_INFO;
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/*
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* The internal data types
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*/
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typedef enum {
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NC_UNSPECIFIED = 0,
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/* future NC_BITFIELD = 7, */
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/* NC_STRING = 8, */
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NC_DIMENSION = 10,
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NC_VARIABLE = 11,
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NC_ATTRIBUTE = 12
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} NCtype;
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/*
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* NC dimension stucture
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*/
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typedef struct {
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/* all xdr'd */
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NC_string *name;
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uint32_t hash;
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size_t size;
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} NC_dim;
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typedef struct NC_dimarray {
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size_t nalloc; /* number allocated >= nelems */
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/* below gets xdr'd */
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/* NCtype type = NC_DIMENSION */
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size_t nelems; /* length of the array */
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NC_dim **value;
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} NC_dimarray;
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/* Begin defined in dim.c */
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extern void
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free_NC_dim(NC_dim *dimp);
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extern NC_dim *
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new_x_NC_dim(NC_string *name);
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extern int
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find_NC_Udim(const NC_dimarray *ncap, NC_dim **dimpp);
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/* dimarray */
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extern void
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free_NC_dimarrayV0(NC_dimarray *ncap);
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extern void
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free_NC_dimarrayV(NC_dimarray *ncap);
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extern int
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dup_NC_dimarrayV(NC_dimarray *ncap, const NC_dimarray *ref);
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extern NC_dim *
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elem_NC_dimarray(const NC_dimarray *ncap, size_t elem);
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/* End defined in dim.c */
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/*
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* NC attribute
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*/
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typedef struct {
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size_t xsz; /* amount of space at xvalue */
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/* below gets xdr'd */
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NC_string *name;
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nc_type type; /* the discriminant */
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size_t nelems; /* length of the array */
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void *xvalue; /* the actual data, in external representation */
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} NC_attr;
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typedef struct NC_attrarray {
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size_t nalloc; /* number allocated >= nelems */
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/* below gets xdr'd */
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/* NCtype type = NC_ATTRIBUTE */
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size_t nelems; /* length of the array */
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NC_attr **value;
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} NC_attrarray;
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/* Begin defined in attr.c */
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extern void
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free_NC_attr(NC_attr *attrp);
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extern NC_attr *
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new_x_NC_attr(
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NC_string *strp,
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nc_type type,
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size_t nelems);
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extern NC_attr **
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NC_findattr(const NC_attrarray *ncap, const char *name);
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/* attrarray */
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extern void
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free_NC_attrarrayV0(NC_attrarray *ncap);
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extern void
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free_NC_attrarrayV(NC_attrarray *ncap);
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extern int
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dup_NC_attrarrayV(NC_attrarray *ncap, const NC_attrarray *ref);
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extern NC_attr *
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elem_NC_attrarray(const NC_attrarray *ncap, size_t elem);
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/* End defined in attr.c */
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/*
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* NC variable: description and data
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*/
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typedef struct NC_var {
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size_t xsz; /* xszof 1 element */
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size_t *shape; /* compiled info: dim->size of each dim */
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off_t *dsizes; /* compiled info: the right to left product of shape */
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/* below gets xdr'd */
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NC_string *name;
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uint32_t hash;
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/* next two: formerly NC_iarray *assoc */ /* user definition */
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size_t ndims; /* assoc->count */
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int *dimids; /* assoc->value */
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NC_attrarray attrs;
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nc_type type; /* the discriminant */
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size_t len; /* the total length originally allocated */
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off_t begin;
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} NC_var;
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typedef struct NC_vararray {
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size_t nalloc; /* number allocated >= nelems */
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/* below gets xdr'd */
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/* NCtype type = NC_VARIABLE */
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size_t nelems; /* length of the array */
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NC_var **value;
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} NC_vararray;
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/* Begin defined in lookup3.c */
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extern uint32_t
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hash_fast(const void *key, size_t length);
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/* End defined in lookup3.c */
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/* Begin defined in var.c */
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extern void
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free_NC_var(NC_var *varp);
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extern NC_var *
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new_x_NC_var(
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NC_string *strp,
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size_t ndims);
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/* vararray */
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extern void
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free_NC_vararrayV0(NC_vararray *ncap);
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extern void
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free_NC_vararrayV(NC_vararray *ncap);
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extern int
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dup_NC_vararrayV(NC_vararray *ncap, const NC_vararray *ref);
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extern int
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NC_var_shape(NC_var *varp, const NC_dimarray *dims);
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extern int
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NC_findvar(const NC_vararray *ncap, const char *name, NC_var **varpp);
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extern int
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NC_check_vlen(NC_var *varp, size_t vlen_max);
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extern NC_var *
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NC_lookupvar(NC3_INFO* ncp, int varid);
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/* End defined in var.c */
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#define IS_RECVAR(vp) \
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((vp)->shape != NULL ? (*(vp)->shape == NC_UNLIMITED) : 0 )
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#ifdef LOCKNUMREC
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/*
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* typedef SHMEM type
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* for whenever the SHMEM functions can handle other than shorts
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*/
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typedef unsigned short int ushmem_t;
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typedef short int shmem_t;
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#endif
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struct NC3_INFO {
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/* contains the previous NC during redef. */
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NC3_INFO *old;
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/* flags */
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#define NC_CREAT 2 /* in create phase, cleared by ncendef */
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#define NC_INDEF 8 /* in define mode, cleared by ncendef */
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#define NC_NSYNC 0x10 /* synchronise numrecs on change */
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#define NC_HSYNC 0x20 /* synchronise whole header on change */
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#define NC_NDIRTY 0x40 /* numrecs has changed */
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#define NC_HDIRTY 0x80 /* header info has changed */
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/* NC_NOFILL in netcdf.h, historical interface */
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int flags;
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struct ncio* nciop;
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size_t chunk; /* largest extent this layer will request from ncio->get() */
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size_t xsz; /* external size of this header, == var[0].begin */
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off_t begin_var; /* position of the first (non-record) var */
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off_t begin_rec; /* position of the first 'record' */
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/* Don't constrain maximum size of record unnecessarily */
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#if SIZEOF_OFF_T > SIZEOF_SIZE_T
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off_t recsize; /* length of 'record' */
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#else
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size_t recsize; /* length of 'record' */
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#endif
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/* below gets xdr'd */
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size_t numrecs; /* number of 'records' allocated */
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NC_dimarray dims;
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NC_attrarray attrs;
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NC_vararray vars;
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#ifdef LOCKNUMREC
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/* size and named indexes for the lock array protecting NC.numrecs */
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# define LOCKNUMREC_DIM 4
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# define LOCKNUMREC_VALUE 0
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# define LOCKNUMREC_LOCK 1
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# define LOCKNUMREC_SERVING 2
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# define LOCKNUMREC_BASEPE 3
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/* Used on Cray T3E MPP to maintain the
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* integrity of numrecs for an unlimited dimension
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*/
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ushmem_t lock[LOCKNUMREC_DIM];
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#endif
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};
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#define NC_readonly(ncp) \
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(!fIsSet((ncp)->nciop->ioflags, NC_WRITE))
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#define NC_set_readonly(ncp) \
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fClr((ncp)->flags, NC_WRITE)
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#define NC_IsNew(ncp) \
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fIsSet((ncp)->flags, NC_CREAT)
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#define NC_indef(ncp) \
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(NC_IsNew(ncp) || fIsSet((ncp)->flags, NC_INDEF))
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#define set_NC_ndirty(ncp) \
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fSet((ncp)->flags, NC_NDIRTY)
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#define NC_ndirty(ncp) \
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fIsSet((ncp)->flags, NC_NDIRTY)
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#define set_NC_hdirty(ncp) \
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fSet((ncp)->flags, NC_HDIRTY)
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#define NC_hdirty(ncp) \
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fIsSet((ncp)->flags, NC_HDIRTY)
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#define NC_dofill(ncp) \
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(!fIsSet((ncp)->flags, NC_NOFILL))
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#define NC_doHsync(ncp) \
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fIsSet((ncp)->flags, NC_HSYNC)
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#define NC_doNsync(ncp) \
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fIsSet((ncp)->flags, NC_NSYNC)
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#ifndef LOCKNUMREC
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# define NC_get_numrecs(nc3i) \
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((nc3i)->numrecs)
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# define NC_set_numrecs(nc3i, nrecs) \
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{(nc3i)->numrecs = (nrecs);}
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# define NC_increase_numrecs(nc3i, nrecs) \
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{if((nrecs) > (nc3i)->numrecs) ((nc3i)->numrecs = (nrecs));}
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#else
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size_t NC_get_numrecs(const NC3_INFO *nc3i);
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void NC_set_numrecs(NC3_INFO *nc3i, size_t nrecs);
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void NC_increase_numrecs(NC3_INFO *nc3i, size_t nrecs);
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#endif
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/* Begin defined in nc.c */
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extern int
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nc_cktype(nc_type datatype);
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extern size_t
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ncx_howmany(nc_type type, size_t xbufsize);
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extern int
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read_numrecs(NC3_INFO* ncp);
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extern int
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write_numrecs(NC3_INFO* ncp);
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extern int
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NC_sync(NC3_INFO* ncp);
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extern int
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NC_calcsize(const NC3_INFO* ncp, off_t *filesizep);
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/* End defined in nc.c */
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/* Begin defined in v1hpg.c */
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extern size_t
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ncx_len_NC(const NC3_INFO* ncp, size_t sizeof_off_t);
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extern int
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ncx_put_NC(const NC3_INFO* ncp, void **xpp, off_t offset, size_t extent);
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extern int
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nc_get_NC(NC3_INFO* ncp);
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/* End defined in v1hpg.c */
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/* Begin defined in putget.c */
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extern int
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fill_NC_var(NC3_INFO* ncp, const NC_var *varp, size_t varsize, size_t recno);
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extern int
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nc_inq_rec(int ncid, size_t *nrecvars, int *recvarids, size_t *recsizes);
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extern int
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nc_get_rec(int ncid, size_t recnum, void **datap);
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extern int
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nc_put_rec(int ncid, size_t recnum, void *const *datap);
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/* End defined in putget.c */
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/* Define accessors for the dispatchdata */
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#define NC3_DATA(nc) ((NC3_INFO*)(nc)->dispatchdata)
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#define NC3_DATA_SET(nc,data) ((nc)->dispatchdata = (void*)(data))
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#endif /* _NC3INTERNAL_ */
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