forked from Unidata/netcdf-c
/
putget.c
5366 lines (4292 loc) · 116 KB
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putget.c
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/* Do not edit this file. It is produced from the corresponding .m4 source */
/*
* Copyright 1996, University Corporation for Atmospheric Research
* See netcdf/COPYRIGHT file for copying and redistribution conditions.
*/
/* $Id: putget.m4,v 2.79 2010/05/29 22:25:01 russ Exp $ */
#include "config.h"
#include <string.h>
#include <stdlib.h>
#include <assert.h>
#include "netcdf.h"
#include "nc3internal.h"
#include "ncx.h"
#include "fbits.h"
#include "onstack.h"
#ifdef LOCKNUMREC
# include <mpp/shmem.h> /* for SGI/Cray SHMEM routines */
# ifdef LN_TEST
# include <stdio.h>
# endif
#endif
#include "nc3dispatch.h"
#undef MIN /* system may define MIN somewhere and complain */
#define MIN(mm,nn) (((mm) < (nn)) ? (mm) : (nn))
static int
readNCv(const NC3_INFO* ncp, const NC_var* varp, const size_t* start,
const size_t nelems, void* value, const nc_type memtype);
static int
writeNCv(NC3_INFO* ncp, const NC_var* varp, const size_t* start,
const size_t nelems, const void* value, const nc_type memtype);
/* #define ODEBUG 1 */
#if ODEBUG
#include <stdio.h>
/*
* Print the values of an array of size_t
*/
void
arrayp(const char *label, size_t count, const size_t *array)
{
(void) fprintf(stderr, "%s", label);
(void) fputc('\t',stderr);
for(; count > 0; count--, array++)
(void) fprintf(stderr," %lu", (unsigned long)*array);
(void) fputc('\n',stderr);
}
#endif /* ODEBUG */
/* Begin fill */
/*
* This is tunable parameter.
* It essentially controls the tradeoff between the number of times
* memcpy() gets called to copy the external data to fill
* a large buffer vs the number of times its called to
* prepare the external data.
*/
#if _SX
/* NEC SX specific optimization */
#define NFILL 2048
#else
#define NFILL 16
#endif
/*
* Next 6 type specific functions
* Fill a some memory with the default special value.
* Formerly
NC_arrayfill()
*/
static int
NC_fill_schar(
void **xpp,
size_t nelems) /* how many */
{
schar fillp[NFILL * sizeof(double)/X_SIZEOF_CHAR];
assert(nelems <= sizeof(fillp)/sizeof(fillp[0]));
{
schar *vp = fillp; /* lower bound of area to be filled */
const schar *const end = vp + nelems;
while(vp < end)
{
*vp++ = NC_FILL_BYTE;
}
}
return ncx_putn_schar_schar(xpp, nelems, fillp);
}
static int
NC_fill_char(
void **xpp,
size_t nelems) /* how many */
{
char fillp[NFILL * sizeof(double)/X_SIZEOF_CHAR];
assert(nelems <= sizeof(fillp)/sizeof(fillp[0]));
{
char *vp = fillp; /* lower bound of area to be filled */
const char *const end = vp + nelems;
while(vp < end)
{
*vp++ = NC_FILL_CHAR;
}
}
return ncx_putn_char_char(xpp, nelems, fillp);
}
static int
NC_fill_short(
void **xpp,
size_t nelems) /* how many */
{
short fillp[NFILL * sizeof(double)/X_SIZEOF_SHORT];
assert(nelems <= sizeof(fillp)/sizeof(fillp[0]));
{
short *vp = fillp; /* lower bound of area to be filled */
const short *const end = vp + nelems;
while(vp < end)
{
*vp++ = NC_FILL_SHORT;
}
}
return ncx_putn_short_short(xpp, nelems, fillp);
}
#if (SIZEOF_INT >= X_SIZEOF_INT)
static int
NC_fill_int(
void **xpp,
size_t nelems) /* how many */
{
int fillp[NFILL * sizeof(double)/X_SIZEOF_INT];
assert(nelems <= sizeof(fillp)/sizeof(fillp[0]));
{
int *vp = fillp; /* lower bound of area to be filled */
const int *const end = vp + nelems;
while(vp < end)
{
*vp++ = NC_FILL_INT;
}
}
return ncx_putn_int_int(xpp, nelems, fillp);
}
#elif SIZEOF_LONG == X_SIZEOF_INT
static int
NC_fill_int(
void **xpp,
size_t nelems) /* how many */
{
long fillp[NFILL * sizeof(double)/X_SIZEOF_INT];
assert(nelems <= sizeof(fillp)/sizeof(fillp[0]));
{
long *vp = fillp; /* lower bound of area to be filled */
const long *const end = vp + nelems;
while(vp < end)
{
*vp++ = NC_FILL_INT;
}
}
return ncx_putn_int_long(xpp, nelems, fillp);
}
#else
#error "NC_fill_int implementation"
#endif
static int
NC_fill_float(
void **xpp,
size_t nelems) /* how many */
{
float fillp[NFILL * sizeof(double)/X_SIZEOF_FLOAT];
assert(nelems <= sizeof(fillp)/sizeof(fillp[0]));
{
float *vp = fillp; /* lower bound of area to be filled */
const float *const end = vp + nelems;
while(vp < end)
{
*vp++ = NC_FILL_FLOAT;
}
}
return ncx_putn_float_float(xpp, nelems, fillp);
}
static int
NC_fill_double(
void **xpp,
size_t nelems) /* how many */
{
double fillp[NFILL * sizeof(double)/X_SIZEOF_DOUBLE];
assert(nelems <= sizeof(fillp)/sizeof(fillp[0]));
{
double *vp = fillp; /* lower bound of area to be filled */
const double *const end = vp + nelems;
while(vp < end)
{
*vp++ = NC_FILL_DOUBLE;
}
}
return ncx_putn_double_double(xpp, nelems, fillp);
}
/*
* Fill the external space for variable 'varp' values at 'recno' with
* the appropriate value. If 'varp' is not a record variable, fill the
* whole thing. For the special case when 'varp' is the only record
* variable and it is of type byte, char, or short, varsize should be
* ncp->recsize, otherwise it should be varp->len.
* Formerly
xdr_NC_fill()
*/
int
fill_NC_var(NC3_INFO* ncp, const NC_var *varp, size_t varsize, size_t recno)
{
char xfillp[NFILL * X_SIZEOF_DOUBLE];
const size_t step = varp->xsz;
const size_t nelems = sizeof(xfillp)/step;
const size_t xsz = varp->xsz * nelems;
NC_attr **attrpp = NULL;
off_t offset;
size_t remaining = varsize;
void *xp;
int status = NC_NOERR;
/*
* Set up fill value
*/
attrpp = NC_findattr(&varp->attrs, _FillValue);
if( attrpp != NULL )
{
/* User defined fill value */
if( (*attrpp)->type != varp->type || (*attrpp)->nelems != 1 )
{
return NC_EBADTYPE;
}
else
{
/* Use the user defined value */
char *cp = xfillp;
const char *const end = &xfillp[sizeof(xfillp)];
assert(step <= (*attrpp)->xsz);
for( /*NADA*/; cp < end; cp += step)
{
(void) memcpy(cp, (*attrpp)->xvalue, step);
}
}
}
else
{
/* use the default */
assert(xsz % X_ALIGN == 0);
assert(xsz <= sizeof(xfillp));
xp = xfillp;
switch(varp->type){
case NC_BYTE :
status = NC_fill_schar(&xp, nelems);
break;
case NC_CHAR :
status = NC_fill_char(&xp, nelems);
break;
case NC_SHORT :
status = NC_fill_short(&xp, nelems);
break;
case NC_INT :
status = NC_fill_int(&xp, nelems);
break;
case NC_FLOAT :
status = NC_fill_float(&xp, nelems);
break;
case NC_DOUBLE :
status = NC_fill_double(&xp, nelems);
break;
default :
assert("fill_NC_var invalid type" == 0);
status = NC_EBADTYPE;
break;
}
if(status != NC_NOERR)
return status;
assert(xp == xfillp + xsz);
}
/*
* copyout:
* xfillp now contains 'nelems' elements of the fill value
* in external representation.
*/
/*
* Copy it out.
*/
offset = varp->begin;
if(IS_RECVAR(varp))
{
offset += (off_t)ncp->recsize * recno;
}
assert(remaining > 0);
for(;;)
{
const size_t chunksz = MIN(remaining, ncp->chunk);
size_t ii;
status = ncio_get(ncp->nciop, offset, chunksz,
RGN_WRITE, &xp);
if(status != NC_NOERR)
{
return status;
}
/*
* fill the chunksz buffer in units of xsz
*/
for(ii = 0; ii < chunksz/xsz; ii++)
{
(void) memcpy(xp, xfillp, xsz);
xp = (char *)xp + xsz;
}
/*
* Deal with any remainder
*/
{
const size_t rem = chunksz % xsz;
if(rem != 0)
{
(void) memcpy(xp, xfillp, rem);
/* xp = (char *)xp + xsz; */
}
}
status = ncio_rel(ncp->nciop, offset, RGN_MODIFIED);
if(status != NC_NOERR)
{
break;
}
remaining -= chunksz;
if(remaining == 0)
break; /* normal loop exit */
offset += chunksz;
}
return status;
}
/* End fill */
/*
* Add a record containing the fill values.
*/
static int
NCfillrecord(NC3_INFO* ncp, const NC_var *const *varpp, size_t recno)
{
size_t ii = 0;
for(; ii < ncp->vars.nelems; ii++, varpp++)
{
if( !IS_RECVAR(*varpp) )
{
continue; /* skip non-record variables */
}
{
const int status = fill_NC_var(ncp, *varpp, (*varpp)->len, recno);
if(status != NC_NOERR)
return status;
}
}
return NC_NOERR;
}
/*
* Add a record containing the fill values in the special case when
* there is exactly one record variable, where we don't require each
* record to be four-byte aligned (no record padding).
*/
static int
NCfillspecialrecord(NC3_INFO* ncp, const NC_var *varp, size_t recno)
{
int status;
assert(IS_RECVAR(varp));
status = fill_NC_var(ncp, varp, ncp->recsize, recno);
if(status != NC_NOERR)
return status;
return NC_NOERR;
}
/*
* It is advantageous to
* #define TOUCH_LAST
* when using memory mapped io.
*/
#if TOUCH_LAST
/*
* Grow the file to a size which can contain recno
*/
static int
NCtouchlast(NC3_INFO* ncp, const NC_var *const *varpp, size_t recno)
{
int status = NC_NOERR;
const NC_var *varp = NULL;
{
size_t ii = 0;
for(; ii < ncp->vars.nelems; ii++, varpp++)
{
if( !IS_RECVAR(*varpp) )
{
continue; /* skip non-record variables */
}
varp = *varpp;
}
}
assert(varp != NULL);
assert( IS_RECVAR(varp) );
{
const off_t offset = varp->begin
+ (off_t)(recno-1) * (off_t)ncp->recsize
+ (off_t)(varp->len - varp->xsz);
void *xp;
status = ncio_get(ncp->nciop, offset, varp->xsz,
RGN_WRITE, &xp);
if(status != NC_NOERR)
return status;
(void)memset(xp, 0, varp->xsz);
status = ncio_rel(ncp->nciop, offset, RGN_MODIFIED);
}
return status;
}
#endif /* TOUCH_LAST */
/*
* Ensure that the netcdf file has 'numrecs' records,
* add records and fill as neccessary.
*/
static int
NCvnrecs(NC3_INFO* ncp, size_t numrecs)
{
int status = NC_NOERR;
#ifdef LOCKNUMREC
ushmem_t myticket = 0, nowserving = 0;
ushmem_t numpe = (ushmem_t) _num_pes();
/* get ticket and wait */
myticket = shmem_short_finc((shmem_t *) ncp->lock + LOCKNUMREC_LOCK,
ncp->lock[LOCKNUMREC_BASEPE]);
#ifdef LN_TEST
fprintf(stderr,"%d of %d : ticket = %hu\n",
_my_pe(), _num_pes(), myticket);
#endif
do {
shmem_short_get((shmem_t *) &nowserving,
(shmem_t *) ncp->lock + LOCKNUMREC_SERVING, 1,
ncp->lock[LOCKNUMREC_BASEPE]);
#ifdef LN_TEST
fprintf(stderr,"%d of %d : serving = %hu\n",
_my_pe(), _num_pes(), nowserving);
#endif
/* work-around for non-unique tickets */
if (nowserving > myticket && nowserving < myticket + numpe ) {
/* get a new ticket ... you've been bypassed */
/* and handle the unlikely wrap-around effect */
myticket = shmem_short_finc(
(shmem_t *) ncp->lock + LOCKNUMREC_LOCK,
ncp->lock[LOCKNUMREC_BASEPE]);
#ifdef LN_TEST
fprintf(stderr,"%d of %d : new ticket = %hu\n",
_my_pe(), _num_pes(), myticket);
#endif
}
} while(nowserving != myticket);
/* now our turn to check & update value */
#endif
if(numrecs > NC_get_numrecs(ncp))
{
#if TOUCH_LAST
status = NCtouchlast(ncp,
(const NC_var *const*)ncp->vars.value,
numrecs);
if(status != NC_NOERR)
goto common_return;
#endif /* TOUCH_LAST */
set_NC_ndirty(ncp);
if(!NC_dofill(ncp))
{
/* Simply set the new numrecs value */
NC_set_numrecs(ncp, numrecs);
}
else
{
/* Treat two cases differently:
- exactly one record variable (no padding)
- multiple record variables (each record padded
to 4-byte alignment)
*/
NC_var **vpp = (NC_var **)ncp->vars.value;
NC_var *const *const end = &vpp[ncp->vars.nelems];
NC_var *recvarp = NULL; /* last record var */
int numrecvars = 0;
size_t cur_nrecs;
/* determine how many record variables */
for( /*NADA*/; vpp < end; vpp++) {
if(IS_RECVAR(*vpp)) {
recvarp = *vpp;
numrecvars++;
}
}
if (numrecvars != 1) { /* usual case */
/* Fill each record out to numrecs */
while((cur_nrecs = NC_get_numrecs(ncp)) < numrecs)
{
status = NCfillrecord(ncp,
(const NC_var *const*)ncp->vars.value,
cur_nrecs);
if(status != NC_NOERR)
{
break;
}
NC_increase_numrecs(ncp, cur_nrecs +1);
}
if(status != NC_NOERR)
goto common_return;
} else { /* special case */
/* Fill each record out to numrecs */
while((cur_nrecs = NC_get_numrecs(ncp)) < numrecs)
{
status = NCfillspecialrecord(ncp,
recvarp,
cur_nrecs);
if(status != NC_NOERR)
{
break;
}
NC_increase_numrecs(ncp, cur_nrecs +1);
}
if(status != NC_NOERR)
goto common_return;
}
}
if(NC_doNsync(ncp))
{
status = write_numrecs(ncp);
}
}
common_return:
#ifdef LOCKNUMREC
/* finished with our lock - increment serving number */
(void) shmem_short_finc((shmem_t *) ncp->lock + LOCKNUMREC_SERVING,
ncp->lock[LOCKNUMREC_BASEPE]);
#endif
return status;
}
/*
* Check whether 'coord' values are valid for the variable.
*/
static int
NCcoordck(NC3_INFO* ncp, const NC_var *varp, const size_t *coord)
{
const size_t *ip;
size_t *up;
if(varp->ndims == 0)
return NC_NOERR; /* 'scalar' variable */
if(IS_RECVAR(varp))
{
if(*coord > X_UINT_MAX) /* rkr: bug fix from previous X_INT_MAX */
return NC_EINVALCOORDS; /* sanity check */
if(NC_readonly(ncp) && *coord >= NC_get_numrecs(ncp))
{
if(!NC_doNsync(ncp))
return NC_EINVALCOORDS;
/* else */
{
/* Update from disk and check again */
const int status = read_numrecs(ncp);
if(status != NC_NOERR)
return status;
if(*coord >= NC_get_numrecs(ncp))
return NC_EINVALCOORDS;
}
}
ip = coord + 1;
up = varp->shape + 1;
}
else
{
ip = coord;
up = varp->shape;
}
#ifdef CDEBUG
fprintf(stderr," NCcoordck: coord %ld, count %d, ip %ld\n",
coord, varp->ndims, ip );
#endif /* CDEBUG */
for(; ip < coord + varp->ndims; ip++, up++)
{
#ifdef CDEBUG
fprintf(stderr," NCcoordck: ip %p, *ip %ld, up %p, *up %lu\n",
ip, *ip, up, *up );
#endif /* CDEBUG */
/* cast needed for braindead systems with signed size_t */
if((unsigned long) *ip >= (unsigned long) *up )
return NC_EINVALCOORDS;
}
return NC_NOERR;
}
/*
* Check whether 'edges' are valid for the variable and 'start'
*/
/*ARGSUSED*/
static int
NCedgeck(const NC3_INFO* ncp, const NC_var *varp,
const size_t *start, const size_t *edges)
{
const size_t *const end = start + varp->ndims;
const size_t *shp = varp->shape;
if(varp->ndims == 0)
return NC_NOERR; /* 'scalar' variable */
if(IS_RECVAR(varp))
{
start++;
edges++;
shp++;
}
for(; start < end; start++, edges++, shp++)
{
/* cast needed for braindead systems with signed size_t */
if((unsigned long) *edges > *shp ||
(unsigned long) *start + (unsigned long) *edges > *shp)
{
return(NC_EEDGE);
}
}
return NC_NOERR;
}
/*
* Translate the (variable, coord) pair into a seek index
*/
static off_t
NC_varoffset(const NC3_INFO* ncp, const NC_var *varp, const size_t *coord)
{
if(varp->ndims == 0) /* 'scalar' variable */
return varp->begin;
if(varp->ndims == 1)
{
if(IS_RECVAR(varp))
return varp->begin +
(off_t)(*coord) * (off_t)ncp->recsize;
/* else */
return varp->begin + (off_t)(*coord) * (off_t)varp->xsz;
}
/* else */
{
off_t lcoord = (off_t)coord[varp->ndims -1];
off_t *up = varp->dsizes +1;
const size_t *ip = coord;
const off_t *const end = varp->dsizes + varp->ndims;
if(IS_RECVAR(varp))
up++, ip++;
for(; up < end; up++, ip++)
lcoord += (off_t)(*up) * (off_t)(*ip);
lcoord *= varp->xsz;
if(IS_RECVAR(varp))
lcoord += (off_t)(*coord) * ncp->recsize;
lcoord += varp->begin;
return lcoord;
}
}
static int
putNCvx_char_char(NC3_INFO* ncp, const NC_var *varp,
const size_t *start, size_t nelems, const char *value)
{
off_t offset = NC_varoffset(ncp, varp, start);
size_t remaining = varp->xsz * nelems;
int status = NC_NOERR;
void *xp;
if(nelems == 0)
return NC_NOERR;
assert(value != NULL);
for(;;)
{
size_t extent = MIN(remaining, ncp->chunk);
size_t nput = ncx_howmany(varp->type, extent);
int lstatus = ncio_get(ncp->nciop, offset, extent,
RGN_WRITE, &xp);
if(lstatus != NC_NOERR)
return lstatus;
lstatus = ncx_putn_char_char(&xp, nput, value);
if(lstatus != NC_NOERR && status == NC_NOERR)
{
/* not fatal to the loop */
status = lstatus;
}
(void) ncio_rel(ncp->nciop, offset,
RGN_MODIFIED);
remaining -= extent;
if(remaining == 0)
break; /* normal loop exit */
offset += extent;
value += nput;
}
return status;
}
static int
putNCvx_schar_schar(NC3_INFO* ncp, const NC_var *varp,
const size_t *start, size_t nelems, const schar *value)
{
off_t offset = NC_varoffset(ncp, varp, start);
size_t remaining = varp->xsz * nelems;
int status = NC_NOERR;
void *xp;
if(nelems == 0)
return NC_NOERR;
assert(value != NULL);
for(;;)
{
size_t extent = MIN(remaining, ncp->chunk);
size_t nput = ncx_howmany(varp->type, extent);
int lstatus = ncio_get(ncp->nciop, offset, extent,
RGN_WRITE, &xp);
if(lstatus != NC_NOERR)
return lstatus;
lstatus = ncx_putn_schar_schar(&xp, nput, value);
if(lstatus != NC_NOERR && status == NC_NOERR)
{
/* not fatal to the loop */
status = lstatus;
}
(void) ncio_rel(ncp->nciop, offset,
RGN_MODIFIED);
remaining -= extent;
if(remaining == 0)
break; /* normal loop exit */
offset += extent;
value += nput;
}
return status;
}
static int
putNCvx_schar_uchar(NC3_INFO* ncp, const NC_var *varp,
const size_t *start, size_t nelems, const uchar *value)
{
off_t offset = NC_varoffset(ncp, varp, start);
size_t remaining = varp->xsz * nelems;
int status = NC_NOERR;
void *xp;
if(nelems == 0)
return NC_NOERR;
assert(value != NULL);
for(;;)
{
size_t extent = MIN(remaining, ncp->chunk);
size_t nput = ncx_howmany(varp->type, extent);
int lstatus = ncio_get(ncp->nciop, offset, extent,
RGN_WRITE, &xp);
if(lstatus != NC_NOERR)
return lstatus;
lstatus = ncx_putn_schar_uchar(&xp, nput, value);
if(lstatus != NC_NOERR && status == NC_NOERR)
{
/* not fatal to the loop */
status = lstatus;
}
(void) ncio_rel(ncp->nciop, offset,
RGN_MODIFIED);
remaining -= extent;
if(remaining == 0)
break; /* normal loop exit */
offset += extent;
value += nput;
}
return status;
}
static int
putNCvx_schar_short(NC3_INFO* ncp, const NC_var *varp,
const size_t *start, size_t nelems, const short *value)
{
off_t offset = NC_varoffset(ncp, varp, start);
size_t remaining = varp->xsz * nelems;
int status = NC_NOERR;
void *xp;
if(nelems == 0)
return NC_NOERR;
assert(value != NULL);
for(;;)
{
size_t extent = MIN(remaining, ncp->chunk);
size_t nput = ncx_howmany(varp->type, extent);
int lstatus = ncio_get(ncp->nciop, offset, extent,
RGN_WRITE, &xp);
if(lstatus != NC_NOERR)
return lstatus;
lstatus = ncx_putn_schar_short(&xp, nput, value);
if(lstatus != NC_NOERR && status == NC_NOERR)
{
/* not fatal to the loop */
status = lstatus;
}
(void) ncio_rel(ncp->nciop, offset,
RGN_MODIFIED);
remaining -= extent;
if(remaining == 0)
break; /* normal loop exit */
offset += extent;
value += nput;
}
return status;
}
static int
putNCvx_schar_int(NC3_INFO* ncp, const NC_var *varp,
const size_t *start, size_t nelems, const int *value)
{
off_t offset = NC_varoffset(ncp, varp, start);
size_t remaining = varp->xsz * nelems;
int status = NC_NOERR;
void *xp;
if(nelems == 0)
return NC_NOERR;
assert(value != NULL);
for(;;)
{
size_t extent = MIN(remaining, ncp->chunk);
size_t nput = ncx_howmany(varp->type, extent);
int lstatus = ncio_get(ncp->nciop, offset, extent,
RGN_WRITE, &xp);
if(lstatus != NC_NOERR)
return lstatus;
lstatus = ncx_putn_schar_int(&xp, nput, value);
if(lstatus != NC_NOERR && status == NC_NOERR)
{
/* not fatal to the loop */
status = lstatus;
}
(void) ncio_rel(ncp->nciop, offset,
RGN_MODIFIED);
remaining -= extent;
if(remaining == 0)
break; /* normal loop exit */
offset += extent;
value += nput;
}
return status;
}
static int
putNCvx_schar_float(NC3_INFO* ncp, const NC_var *varp,
const size_t *start, size_t nelems, const float *value)
{
off_t offset = NC_varoffset(ncp, varp, start);
size_t remaining = varp->xsz * nelems;
int status = NC_NOERR;
void *xp;
if(nelems == 0)
return NC_NOERR;
assert(value != NULL);
for(;;)
{
size_t extent = MIN(remaining, ncp->chunk);
size_t nput = ncx_howmany(varp->type, extent);
int lstatus = ncio_get(ncp->nciop, offset, extent,
RGN_WRITE, &xp);
if(lstatus != NC_NOERR)
return lstatus;
lstatus = ncx_putn_schar_float(&xp, nput, value);
if(lstatus != NC_NOERR && status == NC_NOERR)
{
/* not fatal to the loop */
status = lstatus;
}