mirror of
https://github.com/Unidata/netcdf-c.git
synced 2024-11-27 07:30:33 +08:00
d2316f866c
Primary Fixes: * Add a whole variable optimization -- used in the rare case that nc_get/put_vara covers the whole of a variable and the variable has a single chunk. * Fix chunking error when stride causes whole chunks to be skipped. * Fix some memory leaks * Add test cases * Add one performance test to nczarr_test/. This uses the timer utils from unit_test: timer_utils.[ch]. * Move ncdumpchunks utility from ncdump to nczarr_test Misc. Other Changes: * Make check for aws libraries conditional on --enable-nczarr-s3 * Remove all but one bm tests from nczarr_test until they are working. * Remove another dependency on HDF5 from supposedly non-HDF5 specific code; specifically hdf5_log_hdf5. * Make the BAIL2 macro be hdf5 specific and replace elsewhere with an HDF5 independent equivalent. * Move hdf5cache.c to libsrc4/nc4cache.c because it is used by nczarr. * Modify unit_tests so that some of them are run even if using Windows. * Misc. small bug fixes and refactors and memory leaks. * Rename some conflicting tests for cmake. * Attempted to make nc_perf work with cmake and failed.
863 lines
22 KiB
C
863 lines
22 KiB
C
/*
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Copyright (c) 1998-2018 University Corporation for Atmospheric Research/Unidata
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See LICENSE.txt for license information.
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*/
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#include "config.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <assert.h>
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#include "netcdf.h"
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#include "ncexhash.h"
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#include "nccrc.h"
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/* 0 => no debug */
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#define DEBUG 0
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#undef DEBUGTRACE
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#undef CATCH
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#define INLINED
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#ifdef CATCH
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#define THROW(x) throw(x)
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static void breakpoint(void) {}
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static int ignore[] = {NC_ENOTFOUND, 0};
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static int throw(int x)
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{
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int* p;
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if(x != 0) {
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for(p=ignore;*p;p++) {if(x == *p) break;}
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if(*p == 0) breakpoint();
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}
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return x;
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}
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#else
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#define THROW(x) (x)
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#endif
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/**
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@Internal
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*/
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#ifdef DEBUGTRACE
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#define TRACE(x) {fprintf(stderr,">>>> %s\n",x); fflush(stderr);}
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#else
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#define TRACE(x)
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#endif
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/* Minimum table size is 2 */
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#define MINDEPTH 1
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/* Minimum leaf size is 2 entries */
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#define MINLEAFLEN 2
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#define MAX(a,b) ((a) > (b) ? (a) : (b))
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#ifdef INLINED
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#define exhashlinkleaf(map,leaf) {\
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if(leaf && map) { leaf->next = map->leaves; map->leaves = leaf; } \
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}
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#define exhashfreeleaf(map,leaf) { \
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if(leaf) {{if(leaf->entries) free(leaf->entries);} free(leaf);} \
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}
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#endif /*INLINED*/
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static int ncexinitialized = 0;
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/* Define a vector of bit masks */
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ncexhashkey_t bitmasks[NCEXHASHKEYBITS];
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/* Extract the leftmost n bits from h */
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#if 1
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#define MSB(h,d) (((h) >> (NCEXHASHKEYBITS - (d))) & bitmasks[d])
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#else
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static ncexhashkey_t
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MSB(ncexhashkey_t h, int d)
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{
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ncexhashkey_t bm = bitmasks[d];
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ncexhashkey_t hkey = h >> (NCEXHASHKEYBITS - d);
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hkey = hkey & bm;
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return hkey;
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}
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#endif
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/* Provide a mask to get the rightmost bit
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of the left n bits of our hash key */
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#define MSBMASK(d) (1 << (NCEXHASHKEYBITS - d))
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static int exhashlookup(NCexhashmap* map, ncexhashkey_t hkey, NCexleaf** leafp, int* indexp);
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static int exhashlocate(NCexhashmap* map, ncexhashkey_t hkey, NCexleaf** leafp, int* indexp);
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static int exhashsplit(NCexhashmap* map, ncexhashkey_t hkey, NCexleaf* leaf);
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static int exhashdouble(NCexhashmap* map);
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static int exbinsearch(ncexhashkey_t hkey, NCexleaf* leaf, int* indexp);
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static void exhashnewentry(NCexhashmap* map, NCexleaf* leaf, ncexhashkey_t hkey, int* indexp);
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static int exhashnewleaf(NCexhashmap* map, NCexleaf** leaf);
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static void exhashunlinkleaf(NCexhashmap* map, NCexleaf* leaf);
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#ifndef INLINED
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static void exhashlinkleaf(NCexhashmap* map, NCexleaf* leaf);
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static void exhashfreeleaf(NCexhashmap* map, NCexleaf* leaf);
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#endif /*INLINED*/
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/**************************************************/
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static void
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ncexinit(void)
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{
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int i;
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bitmasks[0] = 0;
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for(i=1;i<NCEXHASHKEYBITS;i++)
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bitmasks[i] = (1 << i) - 1;
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ncexinitialized = 1;
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}
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/**************************************************/
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/** Creates a new exhash using DEPTH */
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NCexhashmap*
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ncexhashnew(int leaflen)
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{
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NCexhashmap* map = NULL;
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NCexleaf* leaf[2] = {NULL,NULL};
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NCexleaf** topvector = NULL;
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int i;
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int gdepth;
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TRACE("ncexhashnew");
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if(!ncexinitialized) ncexinit();
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gdepth = MINDEPTH;
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if(leaflen < MINLEAFLEN) leaflen = MINLEAFLEN;
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/* Create the table */
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if((map = (NCexhashmap*)calloc(1,sizeof(NCexhashmap))) == NULL)
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goto done;
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map->leaflen = leaflen;
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/* Create the top level vector */
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if((topvector = calloc(1<<gdepth,sizeof(NCexleaf*))) == NULL)
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goto done;
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map->directory = topvector;
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if(exhashnewleaf(map,&leaf[0])) goto done;
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if(exhashnewleaf(map,&leaf[1])) goto done;
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exhashlinkleaf(map,leaf[0]);
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exhashlinkleaf(map,leaf[1]);
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/* Fill in vector */
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for(i=0;i<(1<<gdepth);i++) topvector[i] = (i & 0x1?leaf[1]:leaf[0]);
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topvector = NULL;
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leaf[0] = leaf[1] = NULL;
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map->depth = gdepth;
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assert(map->leaves != NULL);
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done:
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if(leaf[0]) {exhashunlinkleaf(map,leaf[0]); exhashfreeleaf(map,leaf[0]);}
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if(leaf[1]) {exhashunlinkleaf(map,leaf[1]); exhashfreeleaf(map,leaf[1]);}
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if(topvector) free(topvector);
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return map;
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}
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/** Reclaims the exhash structure. */
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void
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ncexhashmapfree(NCexhashmap* map)
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{
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NCexleaf* current = NULL;
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NCexleaf* next= NULL;
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if(map == NULL) return;
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/* Walk the leaf chain to free leaves */
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current = map->leaves; next = NULL;
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while(current) {
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next = current->next;
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exhashfreeleaf(map,current);
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current = next;
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}
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nullfree(map->directory);
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free(map);
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}
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/** Returns the number of active elements. */
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int
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ncexhashcount(NCexhashmap* map)
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{
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return map->nactive;
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}
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/* Hash key based API */
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/* Lookup by Hash Key */
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int
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ncexhashget(NCexhashmap* map, ncexhashkey_t hkey, uintptr_t* datap)
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{
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int stat = NC_NOERR;
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NCexleaf* leaf;
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NCexentry* entry;
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int index;
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/* Do internal lookup */
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if((stat = exhashlookup(map,hkey,&leaf,&index)))
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return THROW(stat);
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entry = &leaf->entries[index];
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assert(entry->hashkey == hkey);
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if(datap) *datap = entry->data;
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return THROW(stat);
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}
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/* Insert by Hash Key */
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int
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ncexhashput(NCexhashmap* map, ncexhashkey_t hkey, uintptr_t data)
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{
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int stat = NC_NOERR;
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NCexleaf* leaf;
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NCexentry* entry;
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int index;
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if(map->iterator.walking) return THROW(NC_EPERM);
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/* Do internal lookup */
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if((stat = exhashlookup(map,hkey,&leaf,&index)) == NC_ENOTFOUND) {
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/* We have to add an entry (sigh!) so find where it goes */
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if((stat = exhashlocate(map,hkey,&leaf,&index)))
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return THROW(stat);
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}
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entry = &leaf->entries[index];
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entry->hashkey = hkey;
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assert(entry->hashkey == hkey);
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entry->data = data;
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return THROW(stat);
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}
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static int
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exhashlookup(NCexhashmap* map, ncexhashkey_t hkey, NCexleaf** leafp, int* indexp)
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{
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int stat = NC_NOERR;
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NCexleaf* leaf;
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ncexhashkey_t offset;
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int index;
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TRACE("exhashlookup");
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/* Extract global depth least significant bits of hkey */
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offset = MSB(hkey,map->depth);
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/* Get corresponding leaf from directory */
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leaf = map->directory[offset];
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if(leafp) *leafp = leaf; /* always return this if possible */
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/* Binary search the leaf entries looking for hkey */
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stat = exbinsearch(hkey,leaf,&index);
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if(indexp) *indexp = index;
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#if DEBUG >= 3
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fprintf(stderr,"lookup: found=%s offset=%x leaf=%d index=%d\n",
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(stat == NC_NOERR ? "true" : "false"),
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offset,leaf->uid,index);
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#endif
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return THROW(stat);
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}
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static int
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exhashlocate(NCexhashmap* map, ncexhashkey_t hkey, NCexleaf** leafp, int* indexp)
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{
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int stat = NC_NOERR;
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ncexhashkey_t offset;
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NCexleaf* leaf = NULL;
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int index = -1;
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int iter;
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TRACE("exhashlocate");
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#if DEBUG >= 2
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fprintf(stderr,"locate.before: "); ncexhashprint(map);
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#endif
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/* Setup */
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*leafp = NULL;
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*indexp = -1;
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if(map->iterator.walking) return THROW(NC_EPERM);
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/* Repeatedly split and/or double until the target leaf has room */
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for(iter=0;;iter++) {
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/* Extract global depth least significant bits of hkey */
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offset = MSB(hkey,map->depth);
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/* Get corresponding leaf from directory */
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leaf = map->directory[offset];
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/* Is there room in the leaf to add an entry? */
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#if DEBUG >= 3
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fprintf(stderr,"locate: iter=%d offset=%x leaf=(%d)%p active=%d\n",iter,offset,leaf->uid,leaf,(int)leaf->active);
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#endif
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if(leaf->active < map->leaflen) break; /* yes, there is room */
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/* Not Enough room, so we need to split this leaf */
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/* Split this leaf and loop to verify we have room */
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#if DEBUG >= 3
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fprintf(stderr,"locate.split.loop: uid=%d\n",leaf->uid);
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#endif
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if((stat = exhashsplit(map,hkey,leaf))) return THROW(stat); /* failed */
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}
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/* We now now that there is room in the leaf */
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/* Insert into this leaf */
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exhashnewentry(map,leaf,hkey,&index);
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#if DEBUG >= 3
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fprintf(stderr,"locate.inserted: index=%d\n",index);
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#endif
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#if DEBUG >= 1
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fprintf(stderr,"locate.inserted.after: "); ncexhashprint(map);
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#endif
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*leafp = leaf;
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*indexp = index;
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return THROW(stat);
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}
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static int
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exhashdouble(NCexhashmap* map)
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{
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NCexleaf** olddir = NULL;
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NCexleaf** newdir = NULL;
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size_t oldcount,newcount;
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ncexhashkey_t iold, inew;
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TRACE("exhashdouble");
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if(map->iterator.walking) return THROW(NC_EPERM);
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#if DEBUG >= 1
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fprintf(stderr,"double.before: "); ncexhashprint(map);
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#endif
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olddir = map->directory;
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/* Attempt to double the directory count */
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oldcount = (1<<map->depth);
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newcount = 2 * oldcount;
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newdir = (NCexleaf**)malloc(newcount*sizeof(NCexleaf*));
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if(newdir == NULL) return THROW(NC_ENOMEM);
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/* Note that newdir == olddir is possible because realloc */
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/* Walk the old directory from top to bottom to double copy
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into newspace */
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assert(oldcount >= 1 && newcount >= 2);
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iold = oldcount;
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inew = newcount;
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do {
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iold -= 1;
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inew -= 2;
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newdir[inew] = olddir[iold];
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newdir[inew+1] = olddir[iold];
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} while(iold > 0);
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assert(iold == 0 && inew == 0);
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/* Fix up */
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map->directory = newdir;
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map->depth++;
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#if DEBUG >= 1
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fprintf(stderr,"double.after: "); ncexhashprint(map);
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#endif
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nullfree(olddir);
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return THROW(NC_NOERR);
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}
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static int
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exhashsplit(NCexhashmap* map, ncexhashkey_t hkey, NCexleaf* leaf)
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{
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int stat = NC_NOERR;
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NCexleaf* newleaf = NULL;
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NCexleaf* leafptr = leaf;
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NCexleaf entries;
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int i, index;
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TRACE("exhashsplit");
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if(map->iterator.walking) {stat = NC_EPERM; goto done;}
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#if DEBUG >= 1
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fprintf(stderr,"split.before: leaf=%d",leaf->uid); ncexhashprint(map);
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#endif
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/* Save the old leaf's entries */
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entries = *leaf;
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/* bump leaf depth */
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leaf->depth++;
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/* May require doubling of the map directory */
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#if DEBUG >= 3
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fprintf(stderr,"split: leaf.depth=%d map.depth=%d\n",leaf->depth,map->depth);
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#endif
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if(leaf->depth > map->depth) {
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/* double the directory */
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if((stat = exhashdouble(map))) return THROW(stat); /* failed */
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}
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/* Re-build the old leaf; keep same uid */
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if((leaf->entries = (NCexentry*)calloc(map->leaflen,sizeof(NCexentry))) == NULL)
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{stat = NC_ENOMEM; goto done;}
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leaf->active = 0;
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/* Allocate and link the new leaf */
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if((stat = exhashnewleaf(map,&newleaf))) goto done;
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exhashlinkleaf(map,newleaf);
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newleaf->depth = leaf->depth;
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#if DEBUG >= 3
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fprintf(stderr,"split.split: newleaf=");ncexhashprintleaf(map,newleaf);
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#endif
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/* Now walk the directory to locate all occurrences of old
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leaf and replace with newleaf in those cases where the
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directory index % 2 == 1
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*/
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for(i=0;i<(1<<map->depth);i++) {
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if(map->directory[i] == leafptr) {
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if(i % 2 == 1) { /* entries should be newleaf */
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#if DEBUG >= 3
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fprintf(stderr,"split.directory[%d]=%d (newleaf)\n",(int)i,newleaf->uid);
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#endif
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map->directory[i] = newleaf;
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}
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}
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}
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#if DEBUG >= 1
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fprintf(stderr,"split.after: leaf=%d newleaf=%d",leaf->uid,newleaf->uid); ncexhashprint(map);
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#endif
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newleaf = NULL; /* no longer needed */
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/* Now re-insert the entries */
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/* Should not cause splits or doubles */
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for(i=0;i<entries.active;i++) {
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NCexentry* e = &entries.entries[i];
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switch (stat = exhashlookup(map,e->hashkey,&leaf,&index)) {
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case NC_NOERR: /* Already exists, so fail */
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stat = NC_EINTERNAL;
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goto done;
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default:
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stat = NC_NOERR;
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break;
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}
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assert(leaf != NULL);
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/* Insert in the proper leaf */
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#if DEBUG >= 3
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fprintf(stderr,"split.reinsert: entry.hashkey=%x leaf.uid=%d index=%d\n",
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e->hashkey,leaf->uid,index);
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#endif
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leaf->entries[index] = *e;
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leaf->active++;
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#if DEBUG >= 1
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fprintf(stderr,"split.reinsert.after: "); ncexhashprint(map);
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#endif
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}
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done:
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if(stat) { /* unwind */
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nullfree(leaf->entries);
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*leaf = entries;
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} else {
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nullfree(entries.entries);
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}
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if(newleaf) {
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exhashunlinkleaf(map,newleaf);
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exhashfreeleaf(map,newleaf);
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}
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return THROW(stat);
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}
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/**
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* @internal Define a binary searcher for hash keys in leaf
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* @param hkey for which to search
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* @param leaf to search
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* @param indexp store index of the match or if no match, the index
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* where new value should be stored (0 <= *indexp <= leaf->active)
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* @return NC_NOERR if found
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* @return NC_ENOTFOUND if not found, indexp points to insertion location
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* @author Dennis Heimbigner
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*/
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static int
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exbinsearch(ncexhashkey_t hkey, NCexleaf* leaf, int* indexp)
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{
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int stat = NC_NOERR;
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int n = leaf->active;
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int L = 0;
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int R = (n - 1);
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if(n == 0) {
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if(indexp) *indexp = 0; /* Insert at 0 */
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return THROW(NC_ENOTFOUND);
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}
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while(L != R) {
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int m = (L + R);
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if((m & 0x1)) /* ceiling */
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m = (m / 2) + 1;
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else
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m = (m / 2);
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if(leaf->entries[m].hashkey > hkey)
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R = m - 1;
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else
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L = m;
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}
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/* Return match index or insertion index */
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if(leaf->entries[L].hashkey == hkey) {
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/* L = L; */
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/* stat = NC_NOERR; */
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} else if(leaf->entries[L].hashkey > hkey) {
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/* L = L; */
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stat = NC_ENOTFOUND;
|
|
} else {/* (leaf->entries[m].hashkey < hkey) */
|
|
L = L+1;
|
|
stat = NC_ENOTFOUND;
|
|
}
|
|
if(indexp) *indexp = L;
|
|
return THROW(stat);
|
|
}
|
|
|
|
/* Create new entry at position index */
|
|
static void
|
|
exhashnewentry(NCexhashmap* map, NCexleaf* leaf, ncexhashkey_t hkey, int* indexp)
|
|
{
|
|
int stat;
|
|
int index;
|
|
|
|
/* Figure out where the key should be inserted (*indexp + 1)*/
|
|
stat = exbinsearch(hkey,leaf,indexp);
|
|
assert(stat != NC_NOERR); /* already present */
|
|
index = *indexp;
|
|
assert(index >= 0 && index <= leaf->active);
|
|
assert(index == leaf->active || leaf->entries[index].hashkey > hkey);
|
|
if(leaf->active > 0) {
|
|
int dst = leaf->active;
|
|
int src = leaf->active - 1;
|
|
for(;src >= index;src--,dst--)
|
|
leaf->entries[dst] = leaf->entries[src];
|
|
}
|
|
#if 0
|
|
leaf->entries[index].hashkey = hkey;
|
|
#else
|
|
leaf->entries[index].hashkey = (ncexhashkey_t)0xffffffffffffffff;
|
|
#endif
|
|
leaf->entries[index].data = 0;
|
|
leaf->active++;
|
|
map->nactive++;
|
|
}
|
|
|
|
#ifndef INLINED
|
|
static void
|
|
exhashlinkleaf(NCexhashmap* map, NCexleaf* leaf)
|
|
{
|
|
if(leaf && map) {
|
|
assert(!map->iterator.walking);
|
|
leaf->next = map->leaves;
|
|
map->leaves = leaf;
|
|
assert(leaf->next == NULL || leaf->next != leaf);
|
|
}
|
|
}
|
|
|
|
static void
|
|
exhashfreeleaf(NCexhashmap* map, NCexleaf* leaf)
|
|
{
|
|
assert(!map->iterator.walking);
|
|
if(leaf) {
|
|
nullfree(leaf->entries);
|
|
nullfree(leaf);
|
|
}
|
|
}
|
|
|
|
#endif /*INLINED*/
|
|
|
|
static void
|
|
exhashunlinkleaf(NCexhashmap* map, NCexleaf* leaf)
|
|
{
|
|
if(leaf && map && map->leaves) {
|
|
assert(!map->iterator.walking);
|
|
if(map->leaves == leaf) {/* special case */
|
|
map->leaves = leaf->next;
|
|
} else {
|
|
NCexleaf* cur;
|
|
for(cur = map->leaves;cur != NULL;cur=cur->next) {
|
|
if(cur->next == leaf) {
|
|
cur->next = leaf->next;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static int
|
|
exhashnewleaf(NCexhashmap* map, NCexleaf** leafp)
|
|
{
|
|
int stat = NC_NOERR;
|
|
NCexleaf* leaf = NULL;
|
|
assert(!map->iterator.walking);
|
|
if(leafp) {
|
|
if((leaf = calloc(1,sizeof(NCexleaf))) == NULL)
|
|
goto done;
|
|
assert(map->leaflen > 0);
|
|
if((leaf->entries = calloc(map->leaflen,sizeof(NCexentry))) == NULL)
|
|
goto done;
|
|
leaf->uid = map->uid++;
|
|
*leafp = leaf; leaf = NULL;
|
|
}
|
|
done:
|
|
if(leaf) nullfree(leaf->entries);
|
|
nullfree(leaf);
|
|
return stat;
|
|
}
|
|
|
|
/**
|
|
* Remove by Hash Key
|
|
* @param map
|
|
* @param hkey
|
|
* @param datap Store the data of the removed hkey
|
|
* @return NC_NOERR if found
|
|
* @return NC_ENOTFOUND if not found
|
|
* @return NC_EINVAL for other errors
|
|
* @author Dennis Heimbigner
|
|
*/
|
|
|
|
int
|
|
ncexhashremove(NCexhashmap* map, ncexhashkey_t hkey, uintptr_t* datap)
|
|
{
|
|
int stat = NC_NOERR;
|
|
NCexleaf* leaf;
|
|
int src,dst;
|
|
|
|
if(map->iterator.walking) return THROW(NC_EPERM);
|
|
|
|
if((stat = exhashlookup(map,hkey,&leaf,&dst)))
|
|
return THROW(stat);
|
|
if(datap) *datap = leaf->entries[dst].data;
|
|
/* Compress out the index'th entry */
|
|
for(src=dst+1;src<leaf->active;src++,dst++)
|
|
leaf->entries[dst] = leaf->entries[src];
|
|
leaf->active--;
|
|
map->nactive--;
|
|
return THROW(stat);
|
|
}
|
|
|
|
/**
|
|
* Change data associated with key; do not insert if not found
|
|
* @param map
|
|
* @param hkey
|
|
* @param newdata new data
|
|
* @param olddatap Store previous value
|
|
* @return NC_NOERR if found
|
|
* @return NC_ENOTFOUND if not found
|
|
* @return NC_EINVAL for other errors
|
|
* @author Dennis Heimbigner
|
|
*/
|
|
|
|
int
|
|
ncexhashsetdata(NCexhashmap* map, ncexhashkey_t hkey, uintptr_t newdata, uintptr_t* olddatap)
|
|
{
|
|
int stat = NC_NOERR;
|
|
NCexleaf* leaf = NULL;
|
|
NCexentry* e = NULL;
|
|
int index;
|
|
|
|
if(map->iterator.walking) return THROW(NC_EPERM);
|
|
|
|
if((stat = exhashlookup(map,hkey,&leaf,&index)))
|
|
return THROW(stat);
|
|
e = &leaf->entries[index];
|
|
if(olddatap) *olddatap = e->data;
|
|
e->data = newdata;
|
|
return THROW(stat);
|
|
}
|
|
|
|
/**
|
|
* Inquire map-related values
|
|
* @param map
|
|
* @param leaflenp Store map->leaflen
|
|
* @param depthp Store map->depth
|
|
* @param nactivep Store map->nactive
|
|
* @param uidp Store map->uid
|
|
* @param walkingp Store map->iterator.walking
|
|
*
|
|
* @return NC_NOERR if found
|
|
* @return NC_EINVAL for other errors
|
|
* @author Dennis Heimbigner
|
|
*/
|
|
int
|
|
ncexhashinqmap(NCexhashmap* map, int* leaflenp, int* depthp, int* nactivep, int* uidp, int* walkingp)
|
|
{
|
|
if(map == NULL) return NC_EINVAL;
|
|
if(leaflenp) *leaflenp = map->leaflen;
|
|
if(depthp) *depthp = map->depth;
|
|
if(nactivep) *nactivep = map->nactive;
|
|
if(uidp) *uidp = map->uid;
|
|
if(walkingp) *walkingp = map->iterator.walking;
|
|
return NC_NOERR;
|
|
}
|
|
|
|
/* Return the hash key for specified key; takes key+size*/
|
|
ncexhashkey_t
|
|
ncexhashkey(const unsigned char* key, size_t size)
|
|
{
|
|
return NC_crc64(0,(unsigned char*)key,(unsigned int)size);
|
|
}
|
|
|
|
/* Walk the entries in some order */
|
|
/*
|
|
@return NC_NOERR if keyp and datap are valid
|
|
@return NC_ERANGE if iteration is finished
|
|
@return NC_EINVAL for all other errors
|
|
*/
|
|
int
|
|
ncexhashiterate(NCexhashmap* map, ncexhashkey_t* keyp, uintptr_t* datap)
|
|
{
|
|
int stat = NC_NOERR;
|
|
|
|
if(!map->iterator.walking) {
|
|
map->iterator.leaf = map->leaves;
|
|
map->iterator.index = 0;
|
|
map->iterator.walking = 1;
|
|
}
|
|
for(;;) {
|
|
if(map->iterator.leaf == NULL)
|
|
{stat = NC_ERANGE; break;}
|
|
if(map->iterator.index >= map->iterator.leaf->active) {
|
|
map->iterator.leaf = map->iterator.leaf->next;
|
|
map->iterator.index = 0;
|
|
} else {
|
|
assert(map->iterator.leaf != NULL && map->iterator.index < map->iterator.leaf->active);
|
|
/* Return data from this entry */
|
|
if(keyp) *keyp = map->iterator.leaf->entries[map->iterator.index].hashkey;
|
|
if(datap) *datap = map->iterator.leaf->entries[map->iterator.index].data;
|
|
map->iterator.index++;
|
|
break;
|
|
}
|
|
}
|
|
if(stat != NC_NOERR) { /* stop */
|
|
map->iterator.walking = 0;
|
|
map->iterator.leaf = NULL;
|
|
map->iterator.index = 0;
|
|
}
|
|
return THROW(stat);
|
|
}
|
|
/**************************************************/
|
|
/* Debug support */
|
|
|
|
void
|
|
ncexhashprint(NCexhashmap* hm)
|
|
{
|
|
int dirindex,index;
|
|
|
|
if(hm == NULL) {fprintf(stderr,"NULL"); fflush(stderr); return;}
|
|
fprintf(stderr,"{depth=%u leaflen=%u",hm->depth,hm->leaflen);
|
|
if(hm->iterator.walking) {
|
|
fprintf(stderr," iterator=(leaf=%p index=%u)",
|
|
hm->iterator.leaf,hm->iterator.index);
|
|
}
|
|
fprintf(stderr,"\n");
|
|
for(dirindex=0;dirindex<(1<<hm->depth);dirindex++) {
|
|
NCexleaf* leaf = hm->directory[dirindex];
|
|
fprintf(stderr,"\tdirectory[%03d|%sb]=(%04x)[(%u)^%d|%d|",
|
|
dirindex,ncexbinstr(dirindex,hm->depth),
|
|
leaf->active,
|
|
(unsigned)(0xffff & (uintptr_t)leaf),
|
|
leaf->uid, leaf->depth);
|
|
for(index=0;index<leaf->active;index++) {
|
|
ncexhashkey_t hkey, bits;
|
|
const char* s;
|
|
hkey = leaf->entries[index].hashkey;
|
|
/* Reduce to the leaf->hash MSB */
|
|
bits = MSB(hkey,hm->depth);
|
|
s = ncexbinstr(bits,hm->depth);
|
|
fprintf(stderr,"%s(%s/",(index==0?":":" "),s);
|
|
bits = MSB(hkey,leaf->depth);
|
|
s = ncexbinstr(bits,leaf->depth);
|
|
fprintf(stderr,"%s|0x%llx,%lu)",
|
|
s,
|
|
(unsigned long long)hkey,
|
|
(uintptr_t)leaf->entries[index].data);
|
|
}
|
|
fprintf(stderr,"]\n");
|
|
}
|
|
fprintf(stderr,"}\n");
|
|
fflush(stderr);
|
|
}
|
|
|
|
void
|
|
ncexhashprintdir(NCexhashmap* map, NCexleaf** dir)
|
|
{
|
|
int dirindex;
|
|
for(dirindex=0;dirindex<(1<<map->depth);dirindex++) {
|
|
NCexleaf* leaf = dir[dirindex];
|
|
fprintf(stderr,"\tdirectory[%03d|%sb]=%d/%p\n",
|
|
dirindex,ncexbinstr(dirindex,map->depth),leaf->uid,leaf);
|
|
}
|
|
fflush(stderr);
|
|
}
|
|
|
|
void
|
|
ncexhashprintleaf(NCexhashmap* map, NCexleaf* leaf)
|
|
{
|
|
int index;
|
|
fprintf(stderr,"(%04x)[(%u)^%d|%d|",
|
|
(unsigned)(0xffff & (uintptr_t)leaf),
|
|
leaf->uid, leaf->depth,leaf->active);
|
|
for(index=0;index<leaf->active;index++) {
|
|
ncexhashkey_t hkey, bits;
|
|
const char* s;
|
|
hkey = leaf->entries[index].hashkey;
|
|
/* Reduce to the leaf->hash MSB */
|
|
bits = MSB(hkey,map->depth);
|
|
s = ncexbinstr(bits,map->depth);
|
|
fprintf(stderr,"%s(%s/",(index==0?":":" "),s);
|
|
bits = MSB(hkey,leaf->depth);
|
|
s = ncexbinstr(bits,leaf->depth);
|
|
fprintf(stderr,"%s|0x%llx,%lu)",
|
|
s, (unsigned long long)hkey, (uintptr_t)leaf->entries[index].data);
|
|
}
|
|
fprintf(stderr,"]\n");
|
|
}
|
|
|
|
void
|
|
ncexhashprintentry(NCexhashmap* map, NCexentry* entry)
|
|
{
|
|
|
|
fprintf(stderr,"{0x%llx,%lu)",(unsigned long long)entry->hashkey,(uintptr_t)entry->data);
|
|
}
|
|
|
|
char*
|
|
ncexbinstr(ncexhashkey_t hkey, int depth)
|
|
{
|
|
int i;
|
|
static char bits[NCEXHASHKEYBITS+1];
|
|
memset(bits,'0',NCEXHASHKEYBITS+1);
|
|
bits[NCEXHASHKEYBITS] = '\0';
|
|
for(i=0;i<depth;i++)
|
|
bits[(depth-1)-i] = ((hkey >> i) & 0x1) == 0 ? '0' : '1';
|
|
bits[depth] = '\0';
|
|
return bits;
|
|
}
|
|
|
|
void
|
|
ncexhashprintstats(NCexhashmap* map)
|
|
{
|
|
int nactive, nleaves;
|
|
NCexleaf* leaf = NULL;
|
|
double leafavg = 0.0;
|
|
double leafload = 0.0;
|
|
unsigned long long dirsize, leafsize, total;
|
|
|
|
nactive = 0;
|
|
nleaves = 0;
|
|
for(leaf=map->leaves;leaf;leaf=leaf->next) {
|
|
nleaves++;
|
|
nactive += leaf->active;
|
|
}
|
|
|
|
leafavg = ((double)nactive)/((double)nleaves);
|
|
leafload = leafavg / ((double)map->leaflen);
|
|
|
|
if(nactive != map->nactive) {
|
|
fprintf(stderr,"nactive mismatch: map->active=%d actual=%d\n",map->nactive,nactive);
|
|
}
|
|
fprintf(stderr,"|directory|=%llu nleaves=%d nactive=%d",
|
|
(unsigned long long)(1<<(map->depth)),nleaves,nactive);
|
|
fprintf(stderr," |leaf|=%d nactive/nleaves=%g", map->leaflen, leafavg);
|
|
fprintf(stderr," load=%g",leafload);
|
|
fprintf(stderr,"]\n");
|
|
dirsize = (1<<(map->depth)*((unsigned long long)sizeof(void*)));
|
|
leafsize = (nleaves)*((unsigned long long)sizeof(NCexleaf));
|
|
total = dirsize + leafsize;
|
|
fprintf(stderr,"\tsizeof(directory)=%llu sizeof(leaves)=%lld total=%lld\n",
|
|
dirsize,leafsize,total);
|
|
}
|