[409] | 1 | /* |
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| 2 | * Copyright 1996, University Corporation for Atmospheric Research |
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| 3 | * See netcdf/COPYRIGHT file for copying and redistribution conditions. |
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| 4 | */ |
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| 5 | |
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| 6 | #include <config.h> |
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| 7 | #include <stdlib.h> |
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| 8 | #include <string.h> |
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| 9 | #include <assert.h> |
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| 10 | #if defined(LOCKNUMREC) /* && _CRAYMPP */ |
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| 11 | # include <mpp/shmem.h> |
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| 12 | # include <intrinsics.h> |
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| 13 | #endif |
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| 14 | #ifdef HAVE_UNISTD_H |
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| 15 | #include <unistd.h> |
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| 16 | #endif |
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| 17 | |
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| 18 | #include "nc.h" |
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| 19 | #include "ncdispatch.h" |
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| 20 | #include "nc3dispatch.h" |
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| 21 | #include "rnd.h" |
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| 22 | #include "ncx.h" |
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| 23 | |
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| 24 | /* This is the default create format for nc_create and nc__create. */ |
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| 25 | int default_create_format = NC_FORMAT_CLASSIC; |
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| 26 | |
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| 27 | /* These have to do with version numbers. */ |
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| 28 | #define MAGIC_NUM_LEN 4 |
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| 29 | #define VER_CLASSIC 1 |
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| 30 | #define VER_64BIT_OFFSET 2 |
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| 31 | #define VER_HDF5 3 |
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| 32 | |
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| 33 | int |
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| 34 | NC_check_id(int ncid, NC **ncpp) |
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| 35 | { |
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| 36 | NC* nc = find_in_NCList(ncid); |
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| 37 | if(nc == NULL) return NC_EBADID; |
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| 38 | if(ncpp) *ncpp = nc; |
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| 39 | return NC_NOERR; |
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| 40 | } |
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| 41 | |
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| 42 | static void |
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| 43 | free_NC(NC *ncp) |
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| 44 | { |
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| 45 | if(ncp == NULL) |
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| 46 | return; |
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| 47 | free_NC_dimarrayV(&ncp->dims); |
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| 48 | free_NC_attrarrayV(&ncp->attrs); |
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| 49 | free_NC_vararrayV(&ncp->vars); |
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| 50 | if (ncp->path) |
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| 51 | free(ncp->path); |
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| 52 | #if _CRAYMPP && defined(LOCKNUMREC) |
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| 53 | shfree(ncp); |
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| 54 | #else |
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| 55 | free(ncp); |
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| 56 | #endif /* _CRAYMPP && LOCKNUMREC */ |
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| 57 | } |
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| 58 | |
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| 59 | static NC * |
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| 60 | new_NC(const size_t *chunkp, NC_Dispatch* dispatch) |
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| 61 | { |
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| 62 | NC *ncp; |
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| 63 | int stat = dispatch->new_nc(&ncp); |
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| 64 | if(stat) return NULL; |
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| 65 | ncp->xsz = MIN_NC_XSZ; |
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| 66 | assert(ncp->xsz == ncx_len_NC(ncp,0)); |
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| 67 | ncp->chunk = chunkp != NULL ? *chunkp : NC_SIZEHINT_DEFAULT; |
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| 68 | return ncp; |
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| 69 | } |
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| 70 | |
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| 71 | static NC * |
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| 72 | dup_NC(const NC *ref) |
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| 73 | { |
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| 74 | NC *ncp; |
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| 75 | int stat = ref->dispatch->new_nc(&ncp); |
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| 76 | if(stat) return NULL; |
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| 77 | if(ncp == NULL) |
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| 78 | return NULL; |
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| 79 | |
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| 80 | if(dup_NC_dimarrayV(&ncp->dims, &ref->dims) != NC_NOERR) |
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| 81 | goto err; |
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| 82 | if(dup_NC_attrarrayV(&ncp->attrs, &ref->attrs) != NC_NOERR) |
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| 83 | goto err; |
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| 84 | if(dup_NC_vararrayV(&ncp->vars, &ref->vars) != NC_NOERR) |
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| 85 | goto err; |
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| 86 | |
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| 87 | ncp->xsz = ref->xsz; |
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| 88 | ncp->begin_var = ref->begin_var; |
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| 89 | ncp->begin_rec = ref->begin_rec; |
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| 90 | ncp->recsize = ref->recsize; |
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| 91 | NC_set_numrecs(ncp, NC_get_numrecs(ref)); |
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| 92 | return ncp; |
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| 93 | err: |
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| 94 | free_NC(ncp); |
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| 95 | return NULL; |
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| 96 | } |
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| 97 | |
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| 98 | |
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| 99 | /* |
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| 100 | * Verify that this is a user nc_type |
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| 101 | * Formerly |
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| 102 | NCcktype() |
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| 103 | * Sense of the return is changed. |
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| 104 | */ |
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| 105 | int |
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| 106 | nc_cktype(nc_type type) |
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| 107 | { |
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| 108 | switch((int)type){ |
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| 109 | case NC_BYTE: |
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| 110 | case NC_CHAR: |
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| 111 | case NC_SHORT: |
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| 112 | case NC_INT: |
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| 113 | case NC_FLOAT: |
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| 114 | case NC_DOUBLE: |
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| 115 | return(NC_NOERR); |
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| 116 | } |
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| 117 | return(NC_EBADTYPE); |
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| 118 | } |
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| 119 | |
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| 120 | |
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| 121 | /* |
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| 122 | * How many objects of 'type' |
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| 123 | * will fit into xbufsize? |
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| 124 | */ |
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| 125 | size_t |
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| 126 | ncx_howmany(nc_type type, size_t xbufsize) |
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| 127 | { |
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| 128 | switch(type){ |
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| 129 | case NC_BYTE: |
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| 130 | case NC_CHAR: |
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| 131 | return xbufsize; |
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| 132 | case NC_SHORT: |
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| 133 | return xbufsize/X_SIZEOF_SHORT; |
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| 134 | case NC_INT: |
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| 135 | return xbufsize/X_SIZEOF_INT; |
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| 136 | case NC_FLOAT: |
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| 137 | return xbufsize/X_SIZEOF_FLOAT; |
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| 138 | case NC_DOUBLE: |
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| 139 | return xbufsize/X_SIZEOF_DOUBLE; |
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| 140 | default: |
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| 141 | assert("ncx_howmany: Bad type" == 0); |
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| 142 | return(0); |
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| 143 | } |
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| 144 | } |
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| 145 | |
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| 146 | #define D_RNDUP(x, align) _RNDUP(x, (off_t)(align)) |
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| 147 | |
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| 148 | /* |
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| 149 | * Compute each variable's 'begin' offset, |
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| 150 | * update 'begin_rec' as well. |
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| 151 | */ |
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| 152 | static int |
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| 153 | NC_begins(NC *ncp, |
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| 154 | size_t h_minfree, size_t v_align, |
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| 155 | size_t v_minfree, size_t r_align) |
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| 156 | { |
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| 157 | size_t ii; |
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| 158 | int sizeof_off_t; |
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| 159 | off_t index = 0; |
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| 160 | NC_var **vpp; |
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| 161 | NC_var *last = NULL; |
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| 162 | |
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| 163 | if(v_align == NC_ALIGN_CHUNK) |
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| 164 | v_align = ncp->chunk; |
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| 165 | if(r_align == NC_ALIGN_CHUNK) |
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| 166 | r_align = ncp->chunk; |
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| 167 | |
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| 168 | if (fIsSet(ncp->flags, NC_64BIT_OFFSET)) { |
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| 169 | sizeof_off_t = 8; |
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| 170 | } else { |
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| 171 | sizeof_off_t = 4; |
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| 172 | } |
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| 173 | |
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| 174 | ncp->xsz = ncx_len_NC(ncp,sizeof_off_t); |
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| 175 | |
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| 176 | if(ncp->vars.nelems == 0) |
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| 177 | return NC_NOERR; |
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| 178 | |
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| 179 | /* only (re)calculate begin_var if there is not sufficient space in header |
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| 180 | or start of non-record variables is not aligned as requested by valign */ |
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| 181 | if (ncp->begin_var < ncp->xsz + h_minfree || |
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| 182 | ncp->begin_var != D_RNDUP(ncp->begin_var, v_align) ) |
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| 183 | { |
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| 184 | index = (off_t) ncp->xsz; |
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| 185 | ncp->begin_var = D_RNDUP(index, v_align); |
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| 186 | if(ncp->begin_var < index + h_minfree) |
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| 187 | { |
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| 188 | ncp->begin_var = D_RNDUP(index + (off_t)h_minfree, v_align); |
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| 189 | } |
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| 190 | } |
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| 191 | index = ncp->begin_var; |
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| 192 | |
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| 193 | /* loop thru vars, first pass is for the 'non-record' vars */ |
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| 194 | vpp = ncp->vars.value; |
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| 195 | for(ii = 0; ii < ncp->vars.nelems ; ii++, vpp++) |
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| 196 | { |
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| 197 | if( IS_RECVAR(*vpp) ) |
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| 198 | { |
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| 199 | /* skip record variables on this pass */ |
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| 200 | continue; |
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| 201 | } |
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| 202 | #if 0 |
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| 203 | fprintf(stderr, " VAR %d %s: %ld\n", ii, (*vpp)->name->cp, (long)index); |
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| 204 | #endif |
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| 205 | if( sizeof_off_t == 4 && (index > X_OFF_MAX || index < 0) ) |
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| 206 | { |
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| 207 | return NC_EVARSIZE; |
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| 208 | } |
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| 209 | (*vpp)->begin = index; |
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| 210 | index += (*vpp)->len; |
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| 211 | } |
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| 212 | |
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| 213 | /* only (re)calculate begin_rec if there is not sufficient |
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| 214 | space at end of non-record variables or if start of record |
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| 215 | variables is not aligned as requested by r_align */ |
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| 216 | if (ncp->begin_rec < index + v_minfree || |
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| 217 | ncp->begin_rec != D_RNDUP(ncp->begin_rec, r_align) ) |
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| 218 | { |
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| 219 | ncp->begin_rec = D_RNDUP(index, r_align); |
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| 220 | if(ncp->begin_rec < index + v_minfree) |
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| 221 | { |
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| 222 | ncp->begin_rec = D_RNDUP(index + (off_t)v_minfree, r_align); |
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| 223 | } |
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| 224 | } |
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| 225 | index = ncp->begin_rec; |
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| 226 | |
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| 227 | ncp->recsize = 0; |
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| 228 | |
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| 229 | /* loop thru vars, second pass is for the 'record' vars */ |
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| 230 | vpp = (NC_var **)ncp->vars.value; |
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| 231 | for(ii = 0; ii < ncp->vars.nelems; ii++, vpp++) |
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| 232 | { |
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| 233 | if( !IS_RECVAR(*vpp) ) |
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| 234 | { |
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| 235 | /* skip non-record variables on this pass */ |
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| 236 | continue; |
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| 237 | } |
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| 238 | |
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| 239 | #if 0 |
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| 240 | fprintf(stderr, " REC %d %s: %ld\n", ii, (*vpp)->name->cp, (long)index); |
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| 241 | #endif |
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| 242 | if( sizeof_off_t == 4 && (index > X_OFF_MAX || index < 0) ) |
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| 243 | { |
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| 244 | return NC_EVARSIZE; |
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| 245 | } |
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| 246 | (*vpp)->begin = index; |
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| 247 | index += (*vpp)->len; |
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| 248 | /* check if record size must fit in 32-bits */ |
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| 249 | #if SIZEOF_OFF_T == SIZEOF_SIZE_T && SIZEOF_SIZE_T == 4 |
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| 250 | if( ncp->recsize > X_UINT_MAX - (*vpp)->len ) |
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| 251 | { |
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| 252 | return NC_EVARSIZE; |
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| 253 | } |
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| 254 | #endif |
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| 255 | if((*vpp)->len != UINT32_MAX) /* flag for vars >= 2**32 bytes */ |
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| 256 | ncp->recsize += (*vpp)->len; |
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| 257 | last = (*vpp); |
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| 258 | } |
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| 259 | |
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| 260 | /* |
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| 261 | * for special case of |
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| 262 | */ |
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| 263 | if(last != NULL) { |
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| 264 | if(ncp->recsize == last->len) { /* exactly one record variable, pack value */ |
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| 265 | ncp->recsize = *last->dsizes * last->xsz; |
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| 266 | } else if(last->len == UINT32_MAX) { /* huge last record variable */ |
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| 267 | ncp->recsize += *last->dsizes * last->xsz; |
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| 268 | } |
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| 269 | } |
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| 270 | if(NC_IsNew(ncp)) |
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| 271 | NC_set_numrecs(ncp, 0); |
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| 272 | return NC_NOERR; |
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| 273 | } |
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| 274 | |
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| 275 | |
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| 276 | /* |
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| 277 | * Read just the numrecs member. |
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| 278 | * (A relatively expensive way to do things.) |
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| 279 | */ |
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| 280 | int |
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| 281 | read_numrecs(NC *ncp) |
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| 282 | { |
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| 283 | int status = NC_NOERR; |
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| 284 | const void *xp = NULL; |
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| 285 | size_t nrecs = NC_get_numrecs(ncp); |
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| 286 | |
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| 287 | assert(!NC_indef(ncp)); |
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| 288 | |
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| 289 | #define NC_NUMRECS_OFFSET 4 |
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| 290 | #define NC_NUMRECS_EXTENT 4 |
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| 291 | status = ncio_get(ncp->nciop, |
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| 292 | NC_NUMRECS_OFFSET, NC_NUMRECS_EXTENT, 0, (void **)&xp); |
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| 293 | /* cast away const */ |
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| 294 | if(status != NC_NOERR) |
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| 295 | return status; |
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| 296 | |
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| 297 | status = ncx_get_size_t(&xp, &nrecs); |
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| 298 | |
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| 299 | (void) ncio_rel(ncp->nciop, NC_NUMRECS_OFFSET, 0); |
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| 300 | |
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| 301 | if(status == NC_NOERR) |
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| 302 | { |
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| 303 | NC_set_numrecs(ncp, nrecs); |
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| 304 | fClr(ncp->flags, NC_NDIRTY); |
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| 305 | } |
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| 306 | |
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| 307 | return status; |
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| 308 | } |
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| 309 | |
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| 310 | |
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| 311 | /* |
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| 312 | * Write out just the numrecs member. |
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| 313 | * (A relatively expensive way to do things.) |
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| 314 | */ |
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| 315 | int |
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| 316 | write_numrecs(NC *ncp) |
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| 317 | { |
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| 318 | int status = NC_NOERR; |
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| 319 | void *xp = NULL; |
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| 320 | |
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| 321 | assert(!NC_readonly(ncp)); |
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| 322 | assert(!NC_indef(ncp)); |
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| 323 | |
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| 324 | status = ncio_get(ncp->nciop, |
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| 325 | NC_NUMRECS_OFFSET, NC_NUMRECS_EXTENT, RGN_WRITE, &xp); |
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| 326 | if(status != NC_NOERR) |
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| 327 | return status; |
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| 328 | |
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| 329 | { |
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| 330 | const size_t nrecs = NC_get_numrecs(ncp); |
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| 331 | status = ncx_put_size_t(&xp, &nrecs); |
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| 332 | } |
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| 333 | |
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| 334 | (void) ncio_rel(ncp->nciop, NC_NUMRECS_OFFSET, RGN_MODIFIED); |
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| 335 | |
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| 336 | if(status == NC_NOERR) |
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| 337 | fClr(ncp->flags, NC_NDIRTY); |
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| 338 | |
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| 339 | return status; |
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| 340 | } |
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| 341 | |
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| 342 | |
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| 343 | /* |
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| 344 | * Read in the header |
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| 345 | * It is expensive. |
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| 346 | */ |
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| 347 | static int |
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| 348 | read_NC(NC *ncp) |
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| 349 | { |
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| 350 | int status = NC_NOERR; |
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| 351 | |
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| 352 | free_NC_dimarrayV(&ncp->dims); |
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| 353 | free_NC_attrarrayV(&ncp->attrs); |
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| 354 | free_NC_vararrayV(&ncp->vars); |
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| 355 | |
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| 356 | status = nc_get_NC(ncp); |
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| 357 | |
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| 358 | if(status == NC_NOERR) |
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| 359 | fClr(ncp->flags, NC_NDIRTY | NC_HDIRTY); |
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| 360 | |
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| 361 | return status; |
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| 362 | } |
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| 363 | |
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| 364 | |
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| 365 | /* |
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| 366 | * Write out the header |
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| 367 | */ |
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| 368 | static int |
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| 369 | write_NC(NC *ncp) |
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| 370 | { |
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| 371 | int status = NC_NOERR; |
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| 372 | |
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| 373 | assert(!NC_readonly(ncp)); |
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| 374 | |
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| 375 | status = ncx_put_NC(ncp, NULL, 0, 0); |
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| 376 | |
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| 377 | if(status == NC_NOERR) |
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| 378 | fClr(ncp->flags, NC_NDIRTY | NC_HDIRTY); |
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| 379 | |
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| 380 | return status; |
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| 381 | } |
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| 382 | |
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| 383 | |
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| 384 | /* |
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| 385 | * Write the header or the numrecs if necessary. |
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| 386 | */ |
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| 387 | int |
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| 388 | NC_sync(NC *ncp) |
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| 389 | { |
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| 390 | assert(!NC_readonly(ncp)); |
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| 391 | |
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| 392 | if(NC_hdirty(ncp)) |
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| 393 | { |
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| 394 | return write_NC(ncp); |
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| 395 | } |
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| 396 | /* else */ |
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| 397 | |
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| 398 | if(NC_ndirty(ncp)) |
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| 399 | { |
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| 400 | return write_numrecs(ncp); |
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| 401 | } |
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| 402 | /* else */ |
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| 403 | |
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| 404 | return NC_NOERR; |
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| 405 | } |
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| 406 | |
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| 407 | |
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| 408 | /* |
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| 409 | * Initialize the 'non-record' variables. |
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| 410 | */ |
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| 411 | static int |
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| 412 | fillerup(NC *ncp) |
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| 413 | { |
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| 414 | int status = NC_NOERR; |
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| 415 | size_t ii; |
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| 416 | NC_var **varpp; |
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| 417 | |
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| 418 | assert(!NC_readonly(ncp)); |
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| 419 | assert(NC_dofill(ncp)); |
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| 420 | |
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| 421 | /* loop thru vars */ |
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| 422 | varpp = ncp->vars.value; |
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| 423 | for(ii = 0; ii < ncp->vars.nelems; ii++, varpp++) |
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| 424 | { |
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| 425 | if(IS_RECVAR(*varpp)) |
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| 426 | { |
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| 427 | /* skip record variables */ |
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| 428 | continue; |
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| 429 | } |
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| 430 | |
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| 431 | status = fill_NC_var(ncp, *varpp, (*varpp)->len, 0); |
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| 432 | if(status != NC_NOERR) |
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| 433 | break; |
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| 434 | } |
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| 435 | return status; |
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| 436 | } |
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| 437 | |
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| 438 | /* Begin endef */ |
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| 439 | |
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| 440 | /* |
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| 441 | */ |
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| 442 | static int |
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| 443 | fill_added_recs(NC *gnu, NC *old) |
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| 444 | { |
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| 445 | NC_var ** const gnu_varpp = (NC_var **)gnu->vars.value; |
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| 446 | |
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| 447 | const int old_nrecs = (int) NC_get_numrecs(old); |
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| 448 | int recno = 0; |
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| 449 | NC_var **vpp = gnu_varpp; |
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| 450 | NC_var *const *const end = &vpp[gnu->vars.nelems]; |
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| 451 | int numrecvars = 0; |
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| 452 | |
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| 453 | /* Determine if there is only one record variable. If so, we |
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| 454 | must treat as a special case because there's no record padding */ |
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| 455 | for(; vpp < end; vpp++) { |
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| 456 | if(IS_RECVAR(*vpp)) { |
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| 457 | numrecvars++; |
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| 458 | } |
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| 459 | } |
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| 460 | |
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| 461 | for(; recno < old_nrecs; recno++) |
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| 462 | { |
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| 463 | int varid = (int)old->vars.nelems; |
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| 464 | for(; varid < (int)gnu->vars.nelems; varid++) |
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| 465 | { |
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| 466 | const NC_var *const gnu_varp = *(gnu_varpp + varid); |
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| 467 | if(!IS_RECVAR(gnu_varp)) |
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| 468 | { |
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| 469 | /* skip non-record variables */ |
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| 470 | continue; |
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| 471 | } |
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| 472 | /* else */ |
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| 473 | { |
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| 474 | size_t varsize = numrecvars == 1 ? gnu->recsize : gnu_varp->len; |
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| 475 | const int status = fill_NC_var(gnu, gnu_varp, varsize, recno); |
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| 476 | if(status != NC_NOERR) |
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| 477 | return status; |
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| 478 | } |
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| 479 | } |
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| 480 | } |
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| 481 | return NC_NOERR; |
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| 482 | } |
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| 483 | |
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| 484 | /* |
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| 485 | */ |
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| 486 | static int |
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| 487 | fill_added(NC *gnu, NC *old) |
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| 488 | { |
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| 489 | NC_var ** const gnu_varpp = (NC_var **)gnu->vars.value; |
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| 490 | int varid = (int)old->vars.nelems; |
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| 491 | |
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| 492 | for(; varid < (int)gnu->vars.nelems; varid++) |
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| 493 | { |
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| 494 | const NC_var *const gnu_varp = *(gnu_varpp + varid); |
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| 495 | if(IS_RECVAR(gnu_varp)) |
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| 496 | { |
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| 497 | /* skip record variables */ |
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| 498 | continue; |
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| 499 | } |
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| 500 | /* else */ |
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| 501 | { |
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| 502 | const int status = fill_NC_var(gnu, gnu_varp, gnu_varp->len, 0); |
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| 503 | if(status != NC_NOERR) |
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| 504 | return status; |
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| 505 | } |
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| 506 | } |
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| 507 | |
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| 508 | return NC_NOERR; |
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| 509 | } |
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| 510 | |
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| 511 | |
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| 512 | /* |
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| 513 | * Move the records "out". |
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| 514 | * Fill as needed. |
---|
| 515 | */ |
---|
| 516 | static int |
---|
| 517 | move_recs_r(NC *gnu, NC *old) |
---|
| 518 | { |
---|
| 519 | int status; |
---|
| 520 | int recno; |
---|
| 521 | int varid; |
---|
| 522 | NC_var **gnu_varpp = (NC_var **)gnu->vars.value; |
---|
| 523 | NC_var **old_varpp = (NC_var **)old->vars.value; |
---|
| 524 | NC_var *gnu_varp; |
---|
| 525 | NC_var *old_varp; |
---|
| 526 | off_t gnu_off; |
---|
| 527 | off_t old_off; |
---|
| 528 | const size_t old_nrecs = NC_get_numrecs(old); |
---|
| 529 | |
---|
| 530 | /* Don't parallelize this loop */ |
---|
| 531 | for(recno = (int)old_nrecs -1; recno >= 0; recno--) |
---|
| 532 | { |
---|
| 533 | /* Don't parallelize this loop */ |
---|
| 534 | for(varid = (int)old->vars.nelems -1; varid >= 0; varid--) |
---|
| 535 | { |
---|
| 536 | gnu_varp = *(gnu_varpp + varid); |
---|
| 537 | if(!IS_RECVAR(gnu_varp)) |
---|
| 538 | { |
---|
| 539 | /* skip non-record variables on this pass */ |
---|
| 540 | continue; |
---|
| 541 | } |
---|
| 542 | /* else */ |
---|
| 543 | |
---|
| 544 | /* else, a pre-existing variable */ |
---|
| 545 | old_varp = *(old_varpp + varid); |
---|
| 546 | gnu_off = gnu_varp->begin + (off_t)(gnu->recsize * recno); |
---|
| 547 | old_off = old_varp->begin + (off_t)(old->recsize * recno); |
---|
| 548 | |
---|
| 549 | if(gnu_off == old_off) |
---|
| 550 | continue; /* nothing to do */ |
---|
| 551 | |
---|
| 552 | assert(gnu_off > old_off); |
---|
| 553 | |
---|
| 554 | status = ncio_move(gnu->nciop, gnu_off, old_off, |
---|
| 555 | old_varp->len, 0); |
---|
| 556 | |
---|
| 557 | if(status != NC_NOERR) |
---|
| 558 | return status; |
---|
| 559 | |
---|
| 560 | } |
---|
| 561 | } |
---|
| 562 | |
---|
| 563 | NC_set_numrecs(gnu, old_nrecs); |
---|
| 564 | |
---|
| 565 | return NC_NOERR; |
---|
| 566 | } |
---|
| 567 | |
---|
| 568 | |
---|
| 569 | /* |
---|
| 570 | * Move the "non record" variables "out". |
---|
| 571 | * Fill as needed. |
---|
| 572 | */ |
---|
| 573 | static int |
---|
| 574 | move_vars_r(NC *gnu, NC *old) |
---|
| 575 | { |
---|
| 576 | int status; |
---|
| 577 | int varid; |
---|
| 578 | NC_var **gnu_varpp = (NC_var **)gnu->vars.value; |
---|
| 579 | NC_var **old_varpp = (NC_var **)old->vars.value; |
---|
| 580 | NC_var *gnu_varp; |
---|
| 581 | NC_var *old_varp; |
---|
| 582 | off_t gnu_off; |
---|
| 583 | off_t old_off; |
---|
| 584 | |
---|
| 585 | /* Don't parallelize this loop */ |
---|
| 586 | for(varid = (int)old->vars.nelems -1; |
---|
| 587 | varid >= 0; varid--) |
---|
| 588 | { |
---|
| 589 | gnu_varp = *(gnu_varpp + varid); |
---|
| 590 | if(IS_RECVAR(gnu_varp)) |
---|
| 591 | { |
---|
| 592 | /* skip record variables on this pass */ |
---|
| 593 | continue; |
---|
| 594 | } |
---|
| 595 | /* else */ |
---|
| 596 | |
---|
| 597 | old_varp = *(old_varpp + varid); |
---|
| 598 | gnu_off = gnu_varp->begin; |
---|
| 599 | old_off = old_varp->begin; |
---|
| 600 | |
---|
| 601 | if(gnu_off == old_off) |
---|
| 602 | continue; /* nothing to do */ |
---|
| 603 | |
---|
| 604 | assert(gnu_off > old_off); |
---|
| 605 | |
---|
| 606 | status = ncio_move(gnu->nciop, gnu_off, old_off, |
---|
| 607 | old_varp->len, 0); |
---|
| 608 | |
---|
| 609 | if(status != NC_NOERR) |
---|
| 610 | return status; |
---|
| 611 | |
---|
| 612 | } |
---|
| 613 | |
---|
| 614 | return NC_NOERR; |
---|
| 615 | } |
---|
| 616 | |
---|
| 617 | |
---|
| 618 | /* |
---|
| 619 | * Given a valid ncp, return NC_EVARSIZE if any variable has a bad len |
---|
| 620 | * (product of non-rec dim sizes too large), else return NC_NOERR. |
---|
| 621 | */ |
---|
| 622 | static int |
---|
| 623 | NC_check_vlens(NC *ncp) |
---|
| 624 | { |
---|
| 625 | NC_var **vpp; |
---|
| 626 | /* maximum permitted variable size (or size of one record's worth |
---|
| 627 | of a record variable) in bytes. This is different for format 1 |
---|
| 628 | and format 2. */ |
---|
| 629 | size_t vlen_max; |
---|
| 630 | size_t ii; |
---|
| 631 | size_t large_vars_count; |
---|
| 632 | size_t rec_vars_count; |
---|
| 633 | int last = 0; |
---|
| 634 | |
---|
| 635 | if(ncp->vars.nelems == 0) |
---|
| 636 | return NC_NOERR; |
---|
| 637 | |
---|
| 638 | if ((ncp->flags & NC_64BIT_OFFSET) && sizeof(off_t) > 4) { |
---|
| 639 | /* CDF2 format and LFS */ |
---|
| 640 | vlen_max = X_UINT_MAX - 3; /* "- 3" handles rounded-up size */ |
---|
| 641 | } else { |
---|
| 642 | /* CDF1 format */ |
---|
| 643 | vlen_max = X_INT_MAX - 3; |
---|
| 644 | } |
---|
| 645 | /* Loop through vars, first pass is for non-record variables. */ |
---|
| 646 | large_vars_count = 0; |
---|
| 647 | rec_vars_count = 0; |
---|
| 648 | vpp = ncp->vars.value; |
---|
| 649 | for (ii = 0; ii < ncp->vars.nelems; ii++, vpp++) { |
---|
| 650 | if( !IS_RECVAR(*vpp) ) { |
---|
| 651 | last = 0; |
---|
| 652 | if( NC_check_vlen(*vpp, vlen_max) == 0 ) { |
---|
| 653 | large_vars_count++; |
---|
| 654 | last = 1; |
---|
| 655 | } |
---|
| 656 | } else { |
---|
| 657 | rec_vars_count++; |
---|
| 658 | } |
---|
| 659 | } |
---|
| 660 | /* OK if last non-record variable size too large, since not used to |
---|
| 661 | compute an offset */ |
---|
| 662 | if( large_vars_count > 1) { /* only one "too-large" variable allowed */ |
---|
| 663 | return NC_EVARSIZE; |
---|
| 664 | } |
---|
| 665 | /* and it has to be the last one */ |
---|
| 666 | if( large_vars_count == 1 && last == 0) { |
---|
| 667 | return NC_EVARSIZE; |
---|
| 668 | } |
---|
| 669 | if( rec_vars_count > 0 ) { |
---|
| 670 | /* and if it's the last one, there can't be any record variables */ |
---|
| 671 | if( large_vars_count == 1 && last == 1) { |
---|
| 672 | return NC_EVARSIZE; |
---|
| 673 | } |
---|
| 674 | /* Loop through vars, second pass is for record variables. */ |
---|
| 675 | large_vars_count = 0; |
---|
| 676 | vpp = ncp->vars.value; |
---|
| 677 | for (ii = 0; ii < ncp->vars.nelems; ii++, vpp++) { |
---|
| 678 | if( IS_RECVAR(*vpp) ) { |
---|
| 679 | last = 0; |
---|
| 680 | if( NC_check_vlen(*vpp, vlen_max) == 0 ) { |
---|
| 681 | large_vars_count++; |
---|
| 682 | last = 1; |
---|
| 683 | } |
---|
| 684 | } |
---|
| 685 | } |
---|
| 686 | /* OK if last record variable size too large, since not used to |
---|
| 687 | compute an offset */ |
---|
| 688 | if( large_vars_count > 1) { /* only one "too-large" variable allowed */ |
---|
| 689 | return NC_EVARSIZE; |
---|
| 690 | } |
---|
| 691 | /* and it has to be the last one */ |
---|
| 692 | if( large_vars_count == 1 && last == 0) { |
---|
| 693 | return NC_EVARSIZE; |
---|
| 694 | } |
---|
| 695 | } |
---|
| 696 | return NC_NOERR; |
---|
| 697 | } |
---|
| 698 | |
---|
| 699 | |
---|
| 700 | /* |
---|
| 701 | * End define mode. |
---|
| 702 | * Common code for ncendef, ncclose(endef) |
---|
| 703 | * Flushes I/O buffers. |
---|
| 704 | */ |
---|
| 705 | static int |
---|
| 706 | NC_endef(NC *ncp, |
---|
| 707 | size_t h_minfree, size_t v_align, |
---|
| 708 | size_t v_minfree, size_t r_align) |
---|
| 709 | { |
---|
| 710 | int status = NC_NOERR; |
---|
| 711 | |
---|
| 712 | assert(!NC_readonly(ncp)); |
---|
| 713 | assert(NC_indef(ncp)); |
---|
| 714 | |
---|
| 715 | status = NC_check_vlens(ncp); |
---|
| 716 | if(status != NC_NOERR) |
---|
| 717 | return status; |
---|
| 718 | status = NC_begins(ncp, h_minfree, v_align, v_minfree, r_align); |
---|
| 719 | if(status != NC_NOERR) |
---|
| 720 | return status; |
---|
| 721 | |
---|
| 722 | if(ncp->old != NULL) |
---|
| 723 | { |
---|
| 724 | /* a plain redef, not a create */ |
---|
| 725 | assert(!NC_IsNew(ncp)); |
---|
| 726 | assert(fIsSet(ncp->flags, NC_INDEF)); |
---|
| 727 | assert(ncp->begin_rec >= ncp->old->begin_rec); |
---|
| 728 | assert(ncp->begin_var >= ncp->old->begin_var); |
---|
| 729 | |
---|
| 730 | if(ncp->vars.nelems != 0) |
---|
| 731 | { |
---|
| 732 | if(ncp->begin_rec > ncp->old->begin_rec) |
---|
| 733 | { |
---|
| 734 | status = move_recs_r(ncp, ncp->old); |
---|
| 735 | if(status != NC_NOERR) |
---|
| 736 | return status; |
---|
| 737 | if(ncp->begin_var > ncp->old->begin_var) |
---|
| 738 | { |
---|
| 739 | status = move_vars_r(ncp, ncp->old); |
---|
| 740 | if(status != NC_NOERR) |
---|
| 741 | return status; |
---|
| 742 | } |
---|
| 743 | /* else if (ncp->begin_var == ncp->old->begin_var) { NOOP } */ |
---|
| 744 | } |
---|
| 745 | else |
---|
| 746 | { /* Even if (ncp->begin_rec == ncp->old->begin_rec) |
---|
| 747 | and (ncp->begin_var == ncp->old->begin_var) |
---|
| 748 | might still have added a new record variable */ |
---|
| 749 | if(ncp->recsize > ncp->old->recsize) |
---|
| 750 | { |
---|
| 751 | status = move_recs_r(ncp, ncp->old); |
---|
| 752 | if(status != NC_NOERR) |
---|
| 753 | return status; |
---|
| 754 | } |
---|
| 755 | } |
---|
| 756 | } |
---|
| 757 | } |
---|
| 758 | |
---|
| 759 | status = write_NC(ncp); |
---|
| 760 | if(status != NC_NOERR) |
---|
| 761 | return status; |
---|
| 762 | |
---|
| 763 | if(NC_dofill(ncp)) |
---|
| 764 | { |
---|
| 765 | if(NC_IsNew(ncp)) |
---|
| 766 | { |
---|
| 767 | status = fillerup(ncp); |
---|
| 768 | if(status != NC_NOERR) |
---|
| 769 | return status; |
---|
| 770 | |
---|
| 771 | } |
---|
| 772 | else if(ncp->vars.nelems > ncp->old->vars.nelems) |
---|
| 773 | { |
---|
| 774 | status = fill_added(ncp, ncp->old); |
---|
| 775 | if(status != NC_NOERR) |
---|
| 776 | return status; |
---|
| 777 | status = fill_added_recs(ncp, ncp->old); |
---|
| 778 | if(status != NC_NOERR) |
---|
| 779 | return status; |
---|
| 780 | } |
---|
| 781 | } |
---|
| 782 | |
---|
| 783 | if(ncp->old != NULL) |
---|
| 784 | { |
---|
| 785 | free_NC(ncp->old); |
---|
| 786 | ncp->old = NULL; |
---|
| 787 | } |
---|
| 788 | |
---|
| 789 | fClr(ncp->flags, NC_CREAT | NC_INDEF); |
---|
| 790 | |
---|
| 791 | return ncio_sync(ncp->nciop); |
---|
| 792 | } |
---|
| 793 | |
---|
| 794 | #ifdef LOCKNUMREC |
---|
| 795 | static int |
---|
| 796 | NC_init_pe(NC *ncp, int basepe) { |
---|
| 797 | if (basepe < 0 || basepe >= _num_pes()) { |
---|
| 798 | return NC_EINVAL; /* invalid base pe */ |
---|
| 799 | } |
---|
| 800 | /* initialize common values */ |
---|
| 801 | ncp->lock[LOCKNUMREC_VALUE] = 0; |
---|
| 802 | ncp->lock[LOCKNUMREC_LOCK] = 0; |
---|
| 803 | ncp->lock[LOCKNUMREC_SERVING] = 0; |
---|
| 804 | ncp->lock[LOCKNUMREC_BASEPE] = basepe; |
---|
| 805 | return NC_NOERR; |
---|
| 806 | } |
---|
| 807 | #endif |
---|
| 808 | |
---|
| 809 | |
---|
| 810 | /* |
---|
| 811 | * Compute the expected size of the file. |
---|
| 812 | */ |
---|
| 813 | int |
---|
| 814 | NC_calcsize(const NC *ncp, off_t *calcsizep) |
---|
| 815 | { |
---|
| 816 | NC_var **vpp = (NC_var **)ncp->vars.value; |
---|
| 817 | NC_var *const *const end = &vpp[ncp->vars.nelems]; |
---|
| 818 | NC_var *last_fix = NULL; /* last "non-record" var */ |
---|
| 819 | int numrecvars = 0; /* number of record variables */ |
---|
| 820 | |
---|
| 821 | if(ncp->vars.nelems == 0) { /* no non-record variables and |
---|
| 822 | no record variables */ |
---|
| 823 | *calcsizep = ncp->xsz; /* size of header */ |
---|
| 824 | return NC_NOERR; |
---|
| 825 | } |
---|
| 826 | |
---|
| 827 | for( /*NADA*/; vpp < end; vpp++) { |
---|
| 828 | if(IS_RECVAR(*vpp)) { |
---|
| 829 | numrecvars++; |
---|
| 830 | } else { |
---|
| 831 | last_fix = *vpp; |
---|
| 832 | } |
---|
| 833 | } |
---|
| 834 | |
---|
| 835 | if(numrecvars == 0) { |
---|
| 836 | off_t varsize; |
---|
| 837 | assert(last_fix != NULL); |
---|
| 838 | varsize = last_fix->len; |
---|
| 839 | if(last_fix->len == X_UINT_MAX) { /* huge last fixed var */ |
---|
| 840 | int i; |
---|
| 841 | varsize = 1; |
---|
| 842 | for(i = 0; i < last_fix->ndims; i++ ) { |
---|
| 843 | varsize *= last_fix->shape[i]; |
---|
| 844 | } |
---|
| 845 | } |
---|
| 846 | *calcsizep = last_fix->begin + varsize; |
---|
| 847 | /*last_var = last_fix;*/ |
---|
| 848 | } else { /* we have at least one record variable */ |
---|
| 849 | *calcsizep = ncp->begin_rec + ncp->numrecs * ncp->recsize; |
---|
| 850 | } |
---|
| 851 | |
---|
| 852 | return NC_NOERR; |
---|
| 853 | } |
---|
| 854 | |
---|
| 855 | /* Public */ |
---|
| 856 | |
---|
| 857 | int NC3_new_nc(NC** ncpp) |
---|
| 858 | { |
---|
| 859 | NC *ncp; |
---|
| 860 | |
---|
| 861 | #if _CRAYMPP && defined(LOCKNUMREC) |
---|
| 862 | ncp = (NC *) shmalloc(sizeof(NC)); |
---|
| 863 | #else |
---|
| 864 | ncp = (NC *) malloc(sizeof(NC)); |
---|
| 865 | #endif /* _CRAYMPP && LOCKNUMREC */ |
---|
| 866 | if(ncp == NULL) |
---|
| 867 | return NC_ENOMEM; |
---|
| 868 | (void) memset(ncp, 0, sizeof(NC)); |
---|
| 869 | |
---|
| 870 | ncp->xsz = MIN_NC_XSZ; |
---|
| 871 | assert(ncp->xsz == ncx_len_NC(ncp,0)); |
---|
| 872 | |
---|
| 873 | if(ncpp) *ncpp = ncp; |
---|
| 874 | return NC_NOERR; |
---|
| 875 | |
---|
| 876 | } |
---|
| 877 | |
---|
| 878 | /* WARNING: SIGNATURE CHANGE */ |
---|
| 879 | int |
---|
| 880 | NC3_create(const char *path, int ioflags, |
---|
| 881 | size_t initialsz, int basepe, |
---|
| 882 | size_t *chunksizehintp, |
---|
| 883 | int use_parallel, void* parameters, |
---|
| 884 | NC_Dispatch* dispatch, NC** ncpp) |
---|
| 885 | { |
---|
| 886 | NC *ncp; |
---|
| 887 | int status; |
---|
| 888 | void *xp = NULL; |
---|
| 889 | int sizeof_off_t = 0; |
---|
| 890 | |
---|
| 891 | #if ALWAYS_NC_SHARE /* DEBUG */ |
---|
| 892 | fSet(ioflags, NC_SHARE); |
---|
| 893 | #endif |
---|
| 894 | |
---|
| 895 | ncp = new_NC(chunksizehintp,dispatch); |
---|
| 896 | if(ncp == NULL) |
---|
| 897 | return NC_ENOMEM; |
---|
| 898 | |
---|
| 899 | #if defined(LOCKNUMREC) /* && _CRAYMPP */ |
---|
| 900 | if (status = NC_init_pe(ncp, basepe)) { |
---|
| 901 | return status; |
---|
| 902 | } |
---|
| 903 | #else |
---|
| 904 | /* |
---|
| 905 | * !_CRAYMPP, only pe 0 is valid |
---|
| 906 | */ |
---|
| 907 | if(basepe != 0) |
---|
| 908 | return NC_EINVAL; |
---|
| 909 | #endif |
---|
| 910 | |
---|
| 911 | assert(ncp->flags == 0); |
---|
| 912 | |
---|
| 913 | /* Apply default create format. */ |
---|
| 914 | if (default_create_format == NC_FORMAT_64BIT) |
---|
| 915 | ioflags |= NC_64BIT_OFFSET; |
---|
| 916 | |
---|
| 917 | if (fIsSet(ioflags, NC_64BIT_OFFSET)) { |
---|
| 918 | fSet(ncp->flags, NC_64BIT_OFFSET); |
---|
| 919 | sizeof_off_t = 8; |
---|
| 920 | } else { |
---|
| 921 | sizeof_off_t = 4; |
---|
| 922 | } |
---|
| 923 | |
---|
| 924 | assert(ncp->xsz == ncx_len_NC(ncp,sizeof_off_t)); |
---|
| 925 | |
---|
| 926 | status = ncio_create(path, ioflags, initialsz, |
---|
| 927 | 0, ncp->xsz, &ncp->chunk, |
---|
| 928 | &ncp->nciop, &xp); |
---|
| 929 | if(status != NC_NOERR) |
---|
| 930 | { |
---|
| 931 | /* translate error status */ |
---|
| 932 | if(status == EEXIST) |
---|
| 933 | status = NC_EEXIST; |
---|
| 934 | goto unwind_alloc; |
---|
| 935 | } |
---|
| 936 | |
---|
| 937 | fSet(ncp->flags, NC_CREAT); |
---|
| 938 | |
---|
| 939 | if(fIsSet(ncp->nciop->ioflags, NC_SHARE)) |
---|
| 940 | { |
---|
| 941 | /* |
---|
| 942 | * NC_SHARE implies sync up the number of records as well. |
---|
| 943 | * (File format version one.) |
---|
| 944 | * Note that other header changes are not shared |
---|
| 945 | * automatically. Some sort of IPC (external to this package) |
---|
| 946 | * would be used to trigger a call to nc_sync(). |
---|
| 947 | */ |
---|
| 948 | fSet(ncp->flags, NC_NSYNC); |
---|
| 949 | } |
---|
| 950 | |
---|
| 951 | status = ncx_put_NC(ncp, &xp, sizeof_off_t, ncp->xsz); |
---|
| 952 | if(status != NC_NOERR) |
---|
| 953 | goto unwind_ioc; |
---|
| 954 | |
---|
| 955 | add_to_NCList(ncp); |
---|
| 956 | |
---|
| 957 | if(chunksizehintp != NULL) |
---|
| 958 | *chunksizehintp = ncp->chunk; |
---|
| 959 | |
---|
| 960 | ncp->int_ncid = ncp->nciop->fd; |
---|
| 961 | |
---|
| 962 | if(ncpp) *ncpp = ncp; |
---|
| 963 | |
---|
| 964 | return NC_NOERR; |
---|
| 965 | |
---|
| 966 | unwind_ioc: |
---|
| 967 | (void) ncio_close(ncp->nciop, 1); /* N.B.: unlink */ |
---|
| 968 | ncp->nciop = NULL; |
---|
| 969 | /*FALLTHRU*/ |
---|
| 970 | unwind_alloc: |
---|
| 971 | free_NC(ncp); |
---|
| 972 | return status; |
---|
| 973 | } |
---|
| 974 | |
---|
| 975 | /* This function sets a default create flag that will be logically |
---|
| 976 | or'd to whatever flags are passed into nc_create for all future |
---|
| 977 | calls to nc_create. |
---|
| 978 | Valid default create flags are NC_64BIT_OFFSET, NC_CLOBBER, |
---|
| 979 | NC_LOCK, NC_SHARE. */ |
---|
| 980 | int |
---|
| 981 | nc_set_default_format(int format, int *old_formatp) |
---|
| 982 | { |
---|
| 983 | /* Return existing format if desired. */ |
---|
| 984 | if (old_formatp) |
---|
| 985 | *old_formatp = default_create_format; |
---|
| 986 | |
---|
| 987 | /* Make sure only valid format is set. */ |
---|
| 988 | #ifdef USE_NETCDF4 |
---|
| 989 | if (format != NC_FORMAT_CLASSIC && format != NC_FORMAT_64BIT && |
---|
| 990 | format != NC_FORMAT_NETCDF4 && format != NC_FORMAT_NETCDF4_CLASSIC) |
---|
| 991 | return NC_EINVAL; |
---|
| 992 | #else |
---|
| 993 | if (format != NC_FORMAT_CLASSIC && format != NC_FORMAT_64BIT) |
---|
| 994 | return NC_EINVAL; |
---|
| 995 | #endif |
---|
| 996 | default_create_format = format; |
---|
| 997 | return NC_NOERR; |
---|
| 998 | } |
---|
| 999 | |
---|
| 1000 | int |
---|
| 1001 | NC3_open(const char * path, int ioflags, |
---|
| 1002 | int basepe, size_t *chunksizehintp, |
---|
| 1003 | int use_parallel,void* parameters, |
---|
| 1004 | NC_Dispatch* dispatch, NC** ncpp) |
---|
| 1005 | { |
---|
| 1006 | NC *ncp; |
---|
| 1007 | int status; |
---|
| 1008 | |
---|
| 1009 | #if ALWAYS_NC_SHARE /* DEBUG */ |
---|
| 1010 | fSet(ioflags, NC_SHARE); |
---|
| 1011 | #endif |
---|
| 1012 | |
---|
| 1013 | ncp = new_NC(chunksizehintp,dispatch); |
---|
| 1014 | if(ncp == NULL) |
---|
| 1015 | return NC_ENOMEM; |
---|
| 1016 | |
---|
| 1017 | #if defined(LOCKNUMREC) /* && _CRAYMPP */ |
---|
| 1018 | if (status = NC_init_pe(ncp, basepe)) { |
---|
| 1019 | return status; |
---|
| 1020 | } |
---|
| 1021 | #else |
---|
| 1022 | /* |
---|
| 1023 | * !_CRAYMPP, only pe 0 is valid |
---|
| 1024 | */ |
---|
| 1025 | if(basepe != 0) |
---|
| 1026 | return NC_EINVAL; |
---|
| 1027 | #endif |
---|
| 1028 | |
---|
| 1029 | status = ncio_open(path, ioflags, 0, 0, &ncp->chunk, &ncp->nciop, 0); |
---|
| 1030 | if(status) |
---|
| 1031 | goto unwind_alloc; |
---|
| 1032 | |
---|
| 1033 | assert(ncp->flags == 0); |
---|
| 1034 | |
---|
| 1035 | if(fIsSet(ncp->nciop->ioflags, NC_SHARE)) |
---|
| 1036 | { |
---|
| 1037 | /* |
---|
| 1038 | * NC_SHARE implies sync up the number of records as well. |
---|
| 1039 | * (File format version one.) |
---|
| 1040 | * Note that other header changes are not shared |
---|
| 1041 | * automatically. Some sort of IPC (external to this package) |
---|
| 1042 | * would be used to trigger a call to nc_sync(). |
---|
| 1043 | */ |
---|
| 1044 | fSet(ncp->flags, NC_NSYNC); |
---|
| 1045 | } |
---|
| 1046 | |
---|
| 1047 | status = nc_get_NC(ncp); |
---|
| 1048 | if(status != NC_NOERR) |
---|
| 1049 | goto unwind_ioc; |
---|
| 1050 | |
---|
| 1051 | add_to_NCList(ncp); |
---|
| 1052 | |
---|
| 1053 | if(chunksizehintp != NULL) |
---|
| 1054 | *chunksizehintp = ncp->chunk; |
---|
| 1055 | |
---|
| 1056 | ncp->int_ncid = ncp->nciop->fd; |
---|
| 1057 | |
---|
| 1058 | if(ncpp) *ncpp = ncp; |
---|
| 1059 | |
---|
| 1060 | return NC_NOERR; |
---|
| 1061 | |
---|
| 1062 | unwind_ioc: |
---|
| 1063 | (void) ncio_close(ncp->nciop, 0); |
---|
| 1064 | ncp->nciop = NULL; |
---|
| 1065 | /*FALLTHRU*/ |
---|
| 1066 | unwind_alloc: |
---|
| 1067 | free_NC(ncp); |
---|
| 1068 | return status; |
---|
| 1069 | } |
---|
| 1070 | |
---|
| 1071 | int |
---|
| 1072 | NC3__enddef(int ncid, |
---|
| 1073 | size_t h_minfree, size_t v_align, |
---|
| 1074 | size_t v_minfree, size_t r_align) |
---|
| 1075 | { |
---|
| 1076 | int status; |
---|
| 1077 | NC *ncp; |
---|
| 1078 | |
---|
| 1079 | status = NC_check_id(ncid, &ncp); |
---|
| 1080 | if(status != NC_NOERR) |
---|
| 1081 | return status; |
---|
| 1082 | |
---|
| 1083 | if(!NC_indef(ncp)) |
---|
| 1084 | return(NC_ENOTINDEFINE); |
---|
| 1085 | |
---|
| 1086 | return (NC_endef(ncp, h_minfree, v_align, v_minfree, r_align)); |
---|
| 1087 | } |
---|
| 1088 | |
---|
| 1089 | |
---|
| 1090 | int |
---|
| 1091 | NC3_close(int ncid) |
---|
| 1092 | { |
---|
| 1093 | int status = NC_NOERR; |
---|
| 1094 | NC *ncp; |
---|
| 1095 | |
---|
| 1096 | status = NC_check_id(ncid, &ncp); |
---|
| 1097 | if(status != NC_NOERR) |
---|
| 1098 | return status; |
---|
| 1099 | |
---|
| 1100 | if(NC_indef(ncp)) |
---|
| 1101 | { |
---|
| 1102 | status = NC_endef(ncp, 0, 1, 0, 1); /* TODO: defaults */ |
---|
| 1103 | if(status != NC_NOERR ) |
---|
| 1104 | { |
---|
| 1105 | (void) nc_abort(ncid); |
---|
| 1106 | return status; |
---|
| 1107 | } |
---|
| 1108 | } |
---|
| 1109 | else if(!NC_readonly(ncp)) |
---|
| 1110 | { |
---|
| 1111 | status = NC_sync(ncp); |
---|
| 1112 | /* flush buffers before any filesize comparisons */ |
---|
| 1113 | (void) ncio_sync(ncp->nciop); |
---|
| 1114 | } |
---|
| 1115 | |
---|
| 1116 | /* |
---|
| 1117 | * If file opened for writing and filesize is less than |
---|
| 1118 | * what it should be (due to previous use of NOFILL mode), |
---|
| 1119 | * pad it to correct size, as reported by NC_calcsize(). |
---|
| 1120 | */ |
---|
| 1121 | if (status == ENOERR) { |
---|
| 1122 | off_t filesize; /* current size of open file */ |
---|
| 1123 | off_t calcsize; /* calculated file size, from header */ |
---|
| 1124 | status = ncio_filesize(ncp->nciop, &filesize); |
---|
| 1125 | if(status != ENOERR) |
---|
| 1126 | return status; |
---|
| 1127 | status = NC_calcsize(ncp, &calcsize); |
---|
| 1128 | if(status != NC_NOERR) |
---|
| 1129 | return status; |
---|
| 1130 | if(filesize < calcsize && !NC_readonly(ncp)) { |
---|
| 1131 | status = ncio_pad_length(ncp->nciop, calcsize); |
---|
| 1132 | if(status != ENOERR) |
---|
| 1133 | return status; |
---|
| 1134 | } |
---|
| 1135 | } |
---|
| 1136 | |
---|
| 1137 | (void) ncio_close(ncp->nciop, 0); |
---|
| 1138 | ncp->nciop = NULL; |
---|
| 1139 | |
---|
| 1140 | del_from_NCList(ncp); |
---|
| 1141 | |
---|
| 1142 | free_NC(ncp); |
---|
| 1143 | |
---|
| 1144 | return status; |
---|
| 1145 | } |
---|
| 1146 | |
---|
| 1147 | /* |
---|
| 1148 | * In data mode, same as ncclose. |
---|
| 1149 | * In define mode, restore previous definition. |
---|
| 1150 | * In create, remove the file. |
---|
| 1151 | */ |
---|
| 1152 | int |
---|
| 1153 | NC3_abort(int ncid) |
---|
| 1154 | { |
---|
| 1155 | int status; |
---|
| 1156 | NC *ncp; |
---|
| 1157 | int doUnlink = 0; |
---|
| 1158 | |
---|
| 1159 | status = NC_check_id(ncid, &ncp); |
---|
| 1160 | if(status != NC_NOERR) |
---|
| 1161 | return status; |
---|
| 1162 | |
---|
| 1163 | doUnlink = NC_IsNew(ncp); |
---|
| 1164 | |
---|
| 1165 | if(ncp->old != NULL) |
---|
| 1166 | { |
---|
| 1167 | /* a plain redef, not a create */ |
---|
| 1168 | assert(!NC_IsNew(ncp)); |
---|
| 1169 | assert(fIsSet(ncp->flags, NC_INDEF)); |
---|
| 1170 | free_NC(ncp->old); |
---|
| 1171 | ncp->old = NULL; |
---|
| 1172 | fClr(ncp->flags, NC_INDEF); |
---|
| 1173 | } |
---|
| 1174 | else if(!NC_readonly(ncp)) |
---|
| 1175 | { |
---|
| 1176 | status = NC_sync(ncp); |
---|
| 1177 | if(status != NC_NOERR) |
---|
| 1178 | return status; |
---|
| 1179 | } |
---|
| 1180 | |
---|
| 1181 | |
---|
| 1182 | (void) ncio_close(ncp->nciop, doUnlink); |
---|
| 1183 | ncp->nciop = NULL; |
---|
| 1184 | |
---|
| 1185 | del_from_NCList(ncp); |
---|
| 1186 | |
---|
| 1187 | free_NC(ncp); |
---|
| 1188 | |
---|
| 1189 | return NC_NOERR; |
---|
| 1190 | } |
---|
| 1191 | |
---|
| 1192 | |
---|
| 1193 | int |
---|
| 1194 | NC3_redef(int ncid) |
---|
| 1195 | { |
---|
| 1196 | int status; |
---|
| 1197 | NC *ncp; |
---|
| 1198 | |
---|
| 1199 | status = NC_check_id(ncid, &ncp); |
---|
| 1200 | if(status != NC_NOERR) |
---|
| 1201 | return status; |
---|
| 1202 | |
---|
| 1203 | if(NC_readonly(ncp)) |
---|
| 1204 | return NC_EPERM; |
---|
| 1205 | |
---|
| 1206 | if(NC_indef(ncp)) |
---|
| 1207 | return NC_EINDEFINE; |
---|
| 1208 | |
---|
| 1209 | |
---|
| 1210 | if(fIsSet(ncp->nciop->ioflags, NC_SHARE)) |
---|
| 1211 | { |
---|
| 1212 | /* read in from disk */ |
---|
| 1213 | status = read_NC(ncp); |
---|
| 1214 | if(status != NC_NOERR) |
---|
| 1215 | return status; |
---|
| 1216 | } |
---|
| 1217 | |
---|
| 1218 | ncp->old = dup_NC(ncp); |
---|
| 1219 | if(ncp->old == NULL) |
---|
| 1220 | return NC_ENOMEM; |
---|
| 1221 | |
---|
| 1222 | fSet(ncp->flags, NC_INDEF); |
---|
| 1223 | |
---|
| 1224 | return NC_NOERR; |
---|
| 1225 | } |
---|
| 1226 | |
---|
| 1227 | |
---|
| 1228 | int |
---|
| 1229 | NC3_inq(int ncid, |
---|
| 1230 | int *ndimsp, |
---|
| 1231 | int *nvarsp, |
---|
| 1232 | int *nattsp, |
---|
| 1233 | int *xtendimp) |
---|
| 1234 | { |
---|
| 1235 | int status; |
---|
| 1236 | NC *ncp; |
---|
| 1237 | |
---|
| 1238 | status = NC_check_id(ncid, &ncp); |
---|
| 1239 | if(status != NC_NOERR) |
---|
| 1240 | return status; |
---|
| 1241 | |
---|
| 1242 | if(ndimsp != NULL) |
---|
| 1243 | *ndimsp = (int) ncp->dims.nelems; |
---|
| 1244 | if(nvarsp != NULL) |
---|
| 1245 | *nvarsp = (int) ncp->vars.nelems; |
---|
| 1246 | if(nattsp != NULL) |
---|
| 1247 | *nattsp = (int) ncp->attrs.nelems; |
---|
| 1248 | if(xtendimp != NULL) |
---|
| 1249 | *xtendimp = find_NC_Udim(&ncp->dims, NULL); |
---|
| 1250 | |
---|
| 1251 | return NC_NOERR; |
---|
| 1252 | } |
---|
| 1253 | |
---|
| 1254 | int |
---|
| 1255 | NC3_inq_unlimdim(int ncid, int *xtendimp) |
---|
| 1256 | { |
---|
| 1257 | int status; |
---|
| 1258 | NC *ncp; |
---|
| 1259 | |
---|
| 1260 | status = NC_check_id(ncid, &ncp); |
---|
| 1261 | if(status != NC_NOERR) |
---|
| 1262 | return status; |
---|
| 1263 | |
---|
| 1264 | if(xtendimp != NULL) |
---|
| 1265 | *xtendimp = find_NC_Udim(&ncp->dims, NULL); |
---|
| 1266 | |
---|
| 1267 | return NC_NOERR; |
---|
| 1268 | } |
---|
| 1269 | |
---|
| 1270 | int |
---|
| 1271 | NC3_sync(int ncid) |
---|
| 1272 | { |
---|
| 1273 | int status; |
---|
| 1274 | NC *ncp; |
---|
| 1275 | |
---|
| 1276 | status = NC_check_id(ncid, &ncp); |
---|
| 1277 | if(status != NC_NOERR) |
---|
| 1278 | return status; |
---|
| 1279 | |
---|
| 1280 | if(NC_indef(ncp)) |
---|
| 1281 | return NC_EINDEFINE; |
---|
| 1282 | |
---|
| 1283 | if(NC_readonly(ncp)) |
---|
| 1284 | { |
---|
| 1285 | return read_NC(ncp); |
---|
| 1286 | } |
---|
| 1287 | /* else, read/write */ |
---|
| 1288 | |
---|
| 1289 | status = NC_sync(ncp); |
---|
| 1290 | if(status != NC_NOERR) |
---|
| 1291 | return status; |
---|
| 1292 | |
---|
| 1293 | status = ncio_sync(ncp->nciop); |
---|
| 1294 | if(status != NC_NOERR) |
---|
| 1295 | return status; |
---|
| 1296 | |
---|
| 1297 | #ifdef USE_FSYNC |
---|
| 1298 | /* may improve concurrent access, but slows performance if |
---|
| 1299 | * called frequently */ |
---|
| 1300 | #ifndef WIN32 |
---|
| 1301 | status = fsync(ncp->nciop->fd); |
---|
| 1302 | #else |
---|
| 1303 | status = _commit(ncp->nciop->fd); |
---|
| 1304 | #endif /* WIN32 */ |
---|
| 1305 | #endif /* USE_FSYNC */ |
---|
| 1306 | |
---|
| 1307 | return status; |
---|
| 1308 | } |
---|
| 1309 | |
---|
| 1310 | |
---|
| 1311 | int |
---|
| 1312 | NC3_set_fill(int ncid, |
---|
| 1313 | int fillmode, int *old_mode_ptr) |
---|
| 1314 | { |
---|
| 1315 | int status; |
---|
| 1316 | NC *ncp; |
---|
| 1317 | int oldmode; |
---|
| 1318 | |
---|
| 1319 | status = NC_check_id(ncid, &ncp); |
---|
| 1320 | if(status != NC_NOERR) |
---|
| 1321 | return status; |
---|
| 1322 | |
---|
| 1323 | if(NC_readonly(ncp)) |
---|
| 1324 | return NC_EPERM; |
---|
| 1325 | |
---|
| 1326 | oldmode = fIsSet(ncp->flags, NC_NOFILL) ? NC_NOFILL : NC_FILL; |
---|
| 1327 | |
---|
| 1328 | if(fillmode == NC_NOFILL) |
---|
| 1329 | { |
---|
| 1330 | fSet(ncp->flags, NC_NOFILL); |
---|
| 1331 | } |
---|
| 1332 | else if(fillmode == NC_FILL) |
---|
| 1333 | { |
---|
| 1334 | if(fIsSet(ncp->flags, NC_NOFILL)) |
---|
| 1335 | { |
---|
| 1336 | /* |
---|
| 1337 | * We are changing back to fill mode |
---|
| 1338 | * so do a sync |
---|
| 1339 | */ |
---|
| 1340 | status = NC_sync(ncp); |
---|
| 1341 | if(status != NC_NOERR) |
---|
| 1342 | return status; |
---|
| 1343 | } |
---|
| 1344 | fClr(ncp->flags, NC_NOFILL); |
---|
| 1345 | } |
---|
| 1346 | else |
---|
| 1347 | { |
---|
| 1348 | return NC_EINVAL; /* Invalid fillmode */ |
---|
| 1349 | } |
---|
| 1350 | |
---|
| 1351 | if(old_mode_ptr != NULL) |
---|
| 1352 | *old_mode_ptr = oldmode; |
---|
| 1353 | |
---|
| 1354 | return NC_NOERR; |
---|
| 1355 | } |
---|
| 1356 | |
---|
| 1357 | #ifdef LOCKNUMREC |
---|
| 1358 | |
---|
| 1359 | /* create function versions of the NC_*_numrecs macros */ |
---|
| 1360 | size_t |
---|
| 1361 | NC_get_numrecs(const NC *ncp) { |
---|
| 1362 | shmem_t numrec; |
---|
| 1363 | shmem_short_get(&numrec, (shmem_t *) ncp->lock + LOCKNUMREC_VALUE, 1, |
---|
| 1364 | ncp->lock[LOCKNUMREC_BASEPE]); |
---|
| 1365 | return (size_t) numrec; |
---|
| 1366 | } |
---|
| 1367 | |
---|
| 1368 | void |
---|
| 1369 | NC_set_numrecs(NC *ncp, size_t nrecs) |
---|
| 1370 | { |
---|
| 1371 | shmem_t numrec = (shmem_t) nrecs; |
---|
| 1372 | /* update local value too */ |
---|
| 1373 | ncp->lock[LOCKNUMREC_VALUE] = (ushmem_t) numrec; |
---|
| 1374 | shmem_short_put((shmem_t *) ncp->lock + LOCKNUMREC_VALUE, &numrec, 1, |
---|
| 1375 | ncp->lock[LOCKNUMREC_BASEPE]); |
---|
| 1376 | } |
---|
| 1377 | |
---|
| 1378 | void NC_increase_numrecs(NC *ncp, size_t nrecs) |
---|
| 1379 | { |
---|
| 1380 | /* this is only called in one place that's already protected |
---|
| 1381 | * by a lock ... so don't worry about it */ |
---|
| 1382 | if (nrecs > NC_get_numrecs(ncp)) |
---|
| 1383 | NC_set_numrecs(ncp, nrecs); |
---|
| 1384 | } |
---|
| 1385 | |
---|
| 1386 | #endif /* LOCKNUMREC */ |
---|
| 1387 | |
---|
| 1388 | /* everyone in communicator group will be executing this */ |
---|
| 1389 | /*ARGSUSED*/ |
---|
| 1390 | int |
---|
| 1391 | NC3_set_base_pe(int ncid, int pe) |
---|
| 1392 | { |
---|
| 1393 | #if _CRAYMPP && defined(LOCKNUMREC) |
---|
| 1394 | int status; |
---|
| 1395 | NC *ncp; |
---|
| 1396 | shmem_t numrecs; |
---|
| 1397 | |
---|
| 1398 | if ((status = NC_check_id(ncid, &ncp)) != NC_NOERR) { |
---|
| 1399 | return status; |
---|
| 1400 | } |
---|
| 1401 | if (pe < 0 || pe >= _num_pes()) { |
---|
| 1402 | return NC_EINVAL; /* invalid base pe */ |
---|
| 1403 | } |
---|
| 1404 | |
---|
| 1405 | numrecs = (shmem_t) NC_get_numrecs(ncp); |
---|
| 1406 | |
---|
| 1407 | ncp->lock[LOCKNUMREC_VALUE] = (ushmem_t) numrecs; |
---|
| 1408 | |
---|
| 1409 | /* update serving & lock values for a "smooth" transition */ |
---|
| 1410 | /* note that the "real" server will being doing this as well */ |
---|
| 1411 | /* as all the rest in the group */ |
---|
| 1412 | /* must have syncronization before & after this step */ |
---|
| 1413 | shmem_short_get( |
---|
| 1414 | (shmem_t *) ncp->lock + LOCKNUMREC_SERVING, |
---|
| 1415 | (shmem_t *) ncp->lock + LOCKNUMREC_SERVING, |
---|
| 1416 | 1, ncp->lock[LOCKNUMREC_BASEPE]); |
---|
| 1417 | |
---|
| 1418 | shmem_short_get( |
---|
| 1419 | (shmem_t *) ncp->lock + LOCKNUMREC_LOCK, |
---|
| 1420 | (shmem_t *) ncp->lock + LOCKNUMREC_LOCK, |
---|
| 1421 | 1, ncp->lock[LOCKNUMREC_BASEPE]); |
---|
| 1422 | |
---|
| 1423 | /* complete transition */ |
---|
| 1424 | ncp->lock[LOCKNUMREC_BASEPE] = (ushmem_t) pe; |
---|
| 1425 | |
---|
| 1426 | #endif /* _CRAYMPP && LOCKNUMREC */ |
---|
| 1427 | return NC_NOERR; |
---|
| 1428 | } |
---|
| 1429 | |
---|
| 1430 | /*ARGSUSED*/ |
---|
| 1431 | int |
---|
| 1432 | NC3_inq_base_pe(int ncid, int *pe) |
---|
| 1433 | { |
---|
| 1434 | #if _CRAYMPP && defined(LOCKNUMREC) |
---|
| 1435 | int status; |
---|
| 1436 | NC *ncp; |
---|
| 1437 | |
---|
| 1438 | if ((status = NC_check_id(ncid, &ncp)) != NC_NOERR) { |
---|
| 1439 | return status; |
---|
| 1440 | } |
---|
| 1441 | |
---|
| 1442 | *pe = (int) ncp->lock[LOCKNUMREC_BASEPE]; |
---|
| 1443 | #else |
---|
| 1444 | /* |
---|
| 1445 | * !_CRAYMPP, only pe 0 is valid |
---|
| 1446 | */ |
---|
| 1447 | *pe = 0; |
---|
| 1448 | #endif /* _CRAYMPP && LOCKNUMREC */ |
---|
| 1449 | return NC_NOERR; |
---|
| 1450 | } |
---|
| 1451 | |
---|
| 1452 | int |
---|
| 1453 | NC3_inq_format(int ncid, int *formatp) |
---|
| 1454 | { |
---|
| 1455 | int status; |
---|
| 1456 | NC *ncp; |
---|
| 1457 | |
---|
| 1458 | status = NC_check_id(ncid, &ncp); |
---|
| 1459 | if(status != NC_NOERR) |
---|
| 1460 | return status; |
---|
| 1461 | |
---|
| 1462 | /* only need to check for netCDF-3 variants, since this is never called for netCDF-4 |
---|
| 1463 | files */ |
---|
| 1464 | *formatp = fIsSet(ncp->flags, NC_64BIT_OFFSET) ? NC_FORMAT_64BIT |
---|
| 1465 | : NC_FORMAT_CLASSIC; |
---|
| 1466 | return NC_NOERR; |
---|
| 1467 | } |
---|
| 1468 | |
---|
| 1469 | /* The sizes of types may vary from platform to platform, but within |
---|
| 1470 | * netCDF files, type sizes are fixed. */ |
---|
| 1471 | #define NC_BYTE_LEN 1 |
---|
| 1472 | #define NC_CHAR_LEN 1 |
---|
| 1473 | #define NC_SHORT_LEN 2 |
---|
| 1474 | #define NC_INT_LEN 4 |
---|
| 1475 | #define NC_FLOAT_LEN 4 |
---|
| 1476 | #define NC_DOUBLE_LEN 8 |
---|
| 1477 | #define NUM_ATOMIC_TYPES 6 |
---|
| 1478 | |
---|
| 1479 | /* This netCDF-4 function proved so popular that a netCDF-classic |
---|
| 1480 | * version is provided. You're welcome. */ |
---|
| 1481 | int |
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| 1482 | NC3_inq_type(int ncid, nc_type typeid, char *name, size_t *size) |
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| 1483 | { |
---|
| 1484 | int atomic_size[NUM_ATOMIC_TYPES] = {NC_BYTE_LEN, NC_CHAR_LEN, NC_SHORT_LEN, |
---|
| 1485 | NC_INT_LEN, NC_FLOAT_LEN, NC_DOUBLE_LEN}; |
---|
| 1486 | char atomic_name[NUM_ATOMIC_TYPES][NC_MAX_NAME + 1] = {"byte", "char", "short", |
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| 1487 | "int", "float", "double"}; |
---|
| 1488 | |
---|
| 1489 | /* Only netCDF classic model needs to be handled. */ |
---|
| 1490 | if (typeid < NC_BYTE || typeid > NC_DOUBLE) |
---|
| 1491 | return NC_EBADTYPE; |
---|
| 1492 | |
---|
| 1493 | /* Give the user the values they want. Subtract one because types |
---|
| 1494 | * are numbered starting at 1, not 0. */ |
---|
| 1495 | if (name) |
---|
| 1496 | strcpy(name, atomic_name[typeid - 1]); |
---|
| 1497 | if (size) |
---|
| 1498 | *size = atomic_size[typeid - 1]; |
---|
| 1499 | |
---|
| 1500 | return NC_NOERR; |
---|
| 1501 | } |
---|
| 1502 | |
---|
| 1503 | int |
---|
| 1504 | nc_delete_mp(const char * path, int basepe) |
---|
| 1505 | { |
---|
| 1506 | NC *ncp; |
---|
| 1507 | int status; |
---|
| 1508 | size_t chunk = 512; |
---|
| 1509 | |
---|
| 1510 | status = NC3_new_nc(&ncp); |
---|
| 1511 | if(status) return status; |
---|
| 1512 | ncp->chunk = chunk; |
---|
| 1513 | |
---|
| 1514 | #if defined(LOCKNUMREC) /* && _CRAYMPP */ |
---|
| 1515 | if (status = NC_init_pe(ncp, basepe)) { |
---|
| 1516 | return status; |
---|
| 1517 | } |
---|
| 1518 | #else |
---|
| 1519 | /* |
---|
| 1520 | * !_CRAYMPP, only pe 0 is valid |
---|
| 1521 | */ |
---|
| 1522 | if(basepe != 0) |
---|
| 1523 | return NC_EINVAL; |
---|
| 1524 | #endif |
---|
| 1525 | |
---|
| 1526 | status = ncio_open(path, NC_NOWRITE, |
---|
| 1527 | 0, 0, &ncp->chunk, |
---|
| 1528 | &ncp->nciop, 0); |
---|
| 1529 | if(status) |
---|
| 1530 | goto unwind_alloc; |
---|
| 1531 | |
---|
| 1532 | assert(ncp->flags == 0); |
---|
| 1533 | |
---|
| 1534 | status = nc_get_NC(ncp); |
---|
| 1535 | if(status != NC_NOERR) |
---|
| 1536 | { |
---|
| 1537 | /* Not a netcdf file, don't delete */ |
---|
| 1538 | /* ??? is this the right semantic? what if it was just too big? */ |
---|
| 1539 | (void) ncio_close(ncp->nciop, 0); |
---|
| 1540 | } |
---|
| 1541 | else |
---|
| 1542 | { |
---|
| 1543 | /* ncio_close does the unlink */ |
---|
| 1544 | status = ncio_close(ncp->nciop, 1); /* ncio_close does the unlink */ |
---|
| 1545 | } |
---|
| 1546 | ncp->nciop = NULL; |
---|
| 1547 | |
---|
| 1548 | ncp->nciop = NULL; |
---|
| 1549 | unwind_alloc: |
---|
| 1550 | free_NC(ncp); |
---|
| 1551 | return status; |
---|
| 1552 | } |
---|
| 1553 | |
---|
| 1554 | int |
---|
| 1555 | nc_delete(const char * path) |
---|
| 1556 | { |
---|
| 1557 | return nc_delete_mp(path, 0); |
---|
| 1558 | } |
---|
| 1559 | |
---|