mirror of
https://github.com/Unidata/netcdf-c.git
synced 2024-12-21 08:39:46 +08:00
56c549af0f
In a number of places in the netcdf-c library, some of the high order mode flags (the mode argument to nc_open or nc_close) are being used to save state information. This means that the description of the defined and open mode flags in netcdf.h were not accurate. This PR moves all those hack flags so that the list of mode flags in netcdf.h is correct.
365 lines
8.8 KiB
C
365 lines
8.8 KiB
C
/*
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* Copyright 2018, 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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#include "netcdf.h"
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#ifdef USE_PARALLEL
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#include "netcdf_par.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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#include "nchashmap.h"
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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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/* For classic */
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#define MIN_NC3_XSZ 32
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/* For cdf5 */
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#define MIN_NC5_XSZ 48
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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 structure
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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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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_hashmap *hashmap;
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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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/* begin xdr */
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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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/* end xdr */
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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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/* begin xdr */
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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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/* end xdr */
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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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/* begin xdr */
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NC_string* name;
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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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long long len; /* the total length originally allocated */
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off_t begin;
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/* end xdr */
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int no_fill; /* whether fill mode is ON or OFF */
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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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/* begin xdr */
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/* NCtype type = NC_VARIABLE */
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size_t nelems; /* length of the array */
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NC_hashmap *hashmap;
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NC_var **value;
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} NC_vararray;
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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, long long vlen_max);
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extern int
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NC_lookupvar(NC3_INFO* ncp, int varid, NC_var **varp);
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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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struct NC3_INFO {
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/* contains the previous NC during redef. */
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NC3_INFO *old;
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int flags; /* mode flags */
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int state; /* state transitions flags */
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# define NC_CREAT 0x1 /* in create phase, cleared by ncendef */
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# define NC_INDEF 0x2 /* in define mode, cleared by ncendef */
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# define NC_NSYNC 0x4 /* synchronise numrecs on change */
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# define NC_HSYNC 0x8 /* synchronise whole header on change */
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# define NC_NDIRTY 0x10 /* numrecs has changed */
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# define NC_HDIRTY 0x20 /* header info has changed */
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/* NC_NOFILL defined in netcdf.h, historical interface */
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#if 0
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# define NC_NOFILL 0x100 /**< Argument to nc_set_fill() to turn off filling of data. */
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#endif
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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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};
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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)->state, NC_CREAT)
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#define NC_indef(ncp) \
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(NC_IsNew(ncp) || fIsSet((ncp)->state, NC_INDEF))
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#define set_NC_ndirty(ncp) \
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fSet((ncp)->state, NC_NDIRTY)
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#define NC_ndirty(ncp) \
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fIsSet((ncp)->state, NC_NDIRTY)
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#define set_NC_hdirty(ncp) \
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fSet((ncp)->state, NC_HDIRTY)
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#define NC_hdirty(ncp) \
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fIsSet((ncp)->state, NC_HDIRTY)
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#define NC_dofill(ncp) \
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(!fIsSet((ncp)->state, NC_NOFILL))
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#define NC_doHsync(ncp) \
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fIsSet((ncp)->state, NC_HSYNC)
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#define NC_doNsync(ncp) \
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fIsSet((ncp)->state, NC_NSYNC)
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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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/* Begin defined in nc.c */
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extern int
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nc3_cktype(int mode, 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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extern int
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NC3_inq_default_fill_value(int xtype, void *fillp);
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extern int
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NC3_inq_var_fill(const NC_var *varp, void *fill_value);
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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, long long 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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extern int
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NC_check_vlens(NC3_INFO *ncp);
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extern int
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NC_check_voffs(NC3_INFO *ncp);
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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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