/* General bitsets.
- Copyright (C) 2002 Free Software Foundation, Inc.
+ Copyright (C) 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
Contributed by Michael Hayes (m.hayes@elec.canterbury.ac.nz).
-This program is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2 of the License, or
-(at your option) any later version.
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
-You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software
-Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdlib.h>
+#include <string.h>
#include "bitset.h"
+#include "abitset.h"
+#include "lbitset.h"
+#include "ebitset.h"
+#include "vbitset.h"
+#include "bitset_stats.h"
#include "obstack.h"
-static void bitset_print PARAMS ((FILE *, bitset, int));
-
-#if BITSET_CHECK
-#define BITSET__CHECK2(DST, SRC) \
-if ((DST)->OPS != (SRC)->OPS) abort ();
-
-#define BITSET__CHECK3(DST, SRC1, SRC2) \
-if ((DST)->OPS != (SRC1)->OPS || (DST)->OPS != (SRC2)->OPS) abort ();
-
-#define BITSET__CHECK4(DST, SRC1, SRC2) \
-if ((DST)->OPS != (SRC1)->OPS || (DST)->OPS != (SRC2)->OPS \
- || (DST)->OPS != (SRC3)->OPS) abort ();
-#else
-#define BITSET__CHECK2(DST, SRC)
-
-#define BITSET__CHECK3(DST, SRC1, SRC2)
-
-#define BITSET__CHECK4(DST, SRC1, SRC2, SRC3)
-#endif
-
-#if BITSET_STATS
-#define BITSET_STATS_FILE "bitset.dat"
-
-#define BITSET_LOG_COUNT_BINS 10
-#define BITSET_LOG_SIZE_BINS 16
-#define BITSET_DENSITY_BINS 20
-
-struct bitset_type_stats_struct
-{
- unsigned int xmallocs;
- unsigned int xfrees;
- unsigned int oballocs;
- unsigned int obfrees;
- unsigned int lists;
- unsigned int list_counts[BITSET_LOG_COUNT_BINS];
- unsigned int list_sizes[BITSET_LOG_SIZE_BINS];
- unsigned int list_density[BITSET_DENSITY_BINS];
-};
-
-struct bitset_stats_struct
-{
- unsigned int runs;
- struct bitset_type_stats_struct types[BITSET_TYPE_NUM];
-};
-
-struct bitset_stats_struct bitset_stats_data;
-struct bitset_stats_struct *bitset_stats;
-
-static void bitset_percent_histogram_print PARAMS ((FILE *, const char *,
- const char *,
- unsigned int,
- unsigned int *));
-static void bitset_log_histogram_print PARAMS ((FILE *, const char *,
- const char *,
- unsigned int, unsigned int *));
-static void bitset_stats_print_1 PARAMS ((FILE *, const char *,
- struct bitset_type_stats_struct *));
-static void bitset_stats_print PARAMS ((FILE *, int));
-static void bitset_stats_read PARAMS ((void));
-static void bitset_stats_write PARAMS ((void));
-
-#define BITSET_STATS_XMALLOCS_INC(TYPE) \
- if (bitset_stats) \
- bitset_stats->types[(TYPE)].xmallocs++
-
-#define BITSET_STATS_XFREES_INC(BSET) \
- if (bitset_stats) \
- bitset_stats->types[(BSET)->ops->type].xfrees++
-
-#define BITSET_STATS_OBALLOCS_INC(TYPE) \
- if (bitset_stats) \
- bitset_stats->types[(TYPE)].oballocs++
-
-#define BITSET_STATS_OBFREES_INC(BSET) \
- if (bitset_stats) \
- bitset_stats->types[(BSET)->ops->type].obfrees++
-
-#define BITSET_STATS_LISTS_INC(BSET) \
- if (bitset_stats) \
- bitset_stats->types[(BSET)->ops->type].lists++
-
-#define BITSET_STATS_LIST_COUNTS_INC(BSET, I) \
- if (bitset_stats) \
- bitset_stats->types[(BSET)->ops->type].list_counts[(I)]++
-
-#define BITSET_STATS_LIST_SIZES_INC(BSET, I) \
- if (bitset_stats) \
- bitset_stats->types[(BSET)->ops->type].list_sizes[(I)]++
-
-#define BITSET_STATS_LIST_DENSITY_INC(BSET, I) \
- if (bitset_stats) \
- bitset_stats->types[(BSET)->ops->type].list_density[(I)]++
-
-#else
-#define BITSET_STATS_XMALLOCS_INC(TYPE)
-
-#define BITSET_STATS_XFREES_INC(BSET)
-
-#define BITSET_STATS_OBALLOCS_INC(TYPE)
-
-#define BITSET_STATS_OBFREES_INC(BSET)
-
-#define BITSET_STATS_LISTS_INC(BSET)
-
-#define BITSET_STATS_LIST_COUNTS_INC(BSET, I)
-
-#define BITSET_STATS_LIST_SIZES_INC(BSET, I)
-
-#define BITSET_STATS_LIST_DENSITY_INC(BSET, I)
-#endif /* BITSET_STATS */
-
+const char * const bitset_type_names[] = BITSET_TYPE_NAMES;
/* Return number of bytes required to create a N_BIT bitset
of TYPE. The bitset may grow to require more bytes than this. */
-int
-bitset_bytes (type, n_bits)
- enum bitset_type type;
- bitset_bindex n_bits;
+size_t
+bitset_bytes (enum bitset_type type, bitset_bindex n_bits)
{
- unsigned int bytes;
+ size_t bytes;
+
+ if (bitset_stats_enabled)
+ return bitset_stats_bytes ();
switch (type)
{
case BITSET_ARRAY:
- bytes = sbitset_bytes (n_bits);
+ bytes = abitset_bytes (n_bits);
break;
case BITSET_LIST:
bytes = ebitset_bytes (n_bits);
break;
+ case BITSET_VARRAY:
+ bytes = vbitset_bytes (n_bits);
+ break;
+
default:
abort ();
}
/* Initialise bitset BSET of TYPE for N_BITS. */
bitset
-bitset_init (bset, n_bits, type)
- bitset bset;
- bitset_bindex n_bits;
- enum bitset_type type;
+bitset_init (bitset bset, bitset_bindex n_bits, enum bitset_type type)
{
+ if (bitset_stats_enabled)
+ return bitset_stats_init (bset, n_bits, type);
+
switch (type)
{
case BITSET_ARRAY:
- return sbitset_init (bset, n_bits);
+ return abitset_init (bset, n_bits);
case BITSET_LIST:
return lbitset_init (bset, n_bits);
case BITSET_TABLE:
return ebitset_init (bset, n_bits);
+ case BITSET_VARRAY:
+ return vbitset_init (bset, n_bits);
+
default:
abort ();
}
specified by ATTR. For variable size bitsets, N_BITS is only a
hint and may be zero. */
enum bitset_type
-bitset_type_choose (n_bits, attr)
- bitset_bindex n_bits ATTRIBUTE_UNUSED;
- unsigned int attr;
+bitset_type_choose (bitset_bindex n_bits ATTRIBUTE_UNUSED, unsigned int attr)
{
- enum bitset_type type;
-
-#ifdef ENABLE_CHECKING
/* Check attributes. */
if (attr & BITSET_FIXED && attr & BITSET_VARIABLE)
abort ();
if (attr & BITSET_SPARSE && attr & BITSET_DENSE)
abort ();
- /* Note that sometimes we will be asked for a zero length
- fixed size bitset. */
-#endif
+ /* Choose the type of bitset. Note that sometimes we will be asked
+ for a zero length fixed size bitset. */
- /* Choose the type of bitset. */
- type = BITSET_ARRAY;
- /* Currently, the simple bitsets do not support a variable size. */
- if (attr & BITSET_VARIABLE || attr & BITSET_SPARSE)
- {
- type = BITSET_LIST;
- if (attr & BITSET_DENSE || attr & BITSET_GREEDY)
- type = BITSET_TABLE;
- }
+ /* If no attributes selected, choose a good compromise. */
+ if (!attr)
+ return BITSET_VARRAY;
- return type;
+ if (attr & BITSET_SPARSE)
+ return BITSET_LIST;
+
+ if (attr & BITSET_FIXED)
+ return BITSET_ARRAY;
+
+ if (attr & BITSET_GREEDY)
+ return BITSET_TABLE;
+
+ return BITSET_VARRAY;
}
/* Create a bitset of N_BITS of type TYPE. */
bitset
-bitset_alloc (n_bits, type)
- bitset_bindex n_bits;
- enum bitset_type type;
+bitset_alloc (bitset_bindex n_bits, enum bitset_type type)
{
- unsigned int bytes;
+ size_t bytes;
bitset bset;
- BITSET_STATS_XMALLOCS_INC (type);
-
bytes = bitset_bytes (type, n_bits);
- bset = (bitset) xmalloc (bytes);
+ bset = (bitset) xcalloc (1, bytes);
+
+ /* The cache is disabled until some elements are allocated. If we
+ have variable length arrays, then we may need to allocate a dummy
+ element. */
return bitset_init (bset, n_bits, type);
}
/* Create a bitset of N_BITS of type TYPE. */
bitset
-bitset_obstack_alloc (bobstack, n_bits, type)
- struct obstack *bobstack;
- bitset_bindex n_bits;
- enum bitset_type type;
+bitset_obstack_alloc (struct obstack *bobstack,
+ bitset_bindex n_bits, enum bitset_type type)
{
- unsigned int bytes;
-
- BITSET_STATS_OBALLOCS_INC (type);
+ size_t bytes;
+ bitset bset;
bytes = bitset_bytes (type, n_bits);
- return bitset_init (obstack_alloc (bobstack, bytes), n_bits, type);
+ bset = obstack_alloc (bobstack, bytes);
+ memset (bset, 0, bytes);
+
+ return bitset_init (bset, n_bits, type);
}
/* Create a bitset of N_BITS and with attribute hints specified by
ATTR. */
bitset
-bitset_create (n_bits, attr)
- bitset_bindex n_bits;
- unsigned int attr;
+bitset_create (bitset_bindex n_bits, unsigned int attr)
{
enum bitset_type type;
/* Free bitset BSET. */
void
-bitset_free (bset)
- bitset bset;
+bitset_free (bitset bset)
{
- BITSET_STATS_XFREES_INC (bset);
-
- if (bset->ops->free)
- BITSET__FREE (bset);
-
- bset->ops = NULL;
+ BITSET_FREE_ (bset);
free (bset);
}
/* Free bitset BSET allocated on obstack. */
void
-bitset_obstack_free (bset)
- bitset bset;
+bitset_obstack_free (bitset bset)
{
- BITSET_STATS_OBFREES_INC (bset);
+ BITSET_FREE_ (bset);
+}
+
+
+/* Return bitset type. */
+enum bitset_type
+bitset_type_get (bitset bset)
+{
+ enum bitset_type type;
+
+ type = BITSET_TYPE_ (bset);
+ if (type != BITSET_STATS)
+ return type;
- if (bset->ops->free)
- BITSET__FREE (bset);
- bset->ops = NULL;
+ return bitset_stats_type_get (bset);
+}
+
+
+/* Return name of bitset type. */
+const char *
+bitset_type_name_get (bitset bset)
+{
+ enum bitset_type type;
+
+ type = bitset_type_get (bset);
+
+ return bitset_type_names[type];
}
/* Find next bit set in SRC starting from and including BITNO.
- Return -1 if SRC empty. */
-int
-bitset_next (src, bitno)
- bitset src;
- bitset_bindex bitno;
+ Return BITSET_BINDEX_MAX if SRC empty. */
+bitset_bindex
+bitset_next (bitset src, bitset_bindex bitno)
{
bitset_bindex val;
bitset_bindex next = bitno;
if (!bitset_list (src, &val, 1, &next))
- return -1;
+ return BITSET_BINDEX_MAX;
return val;
}
+/* Return true if both bitsets are of the same type and size. */
+extern bool
+bitset_compatible_p (bitset bset1, bitset bset2)
+{
+ return BITSET_COMPATIBLE_ (bset1, bset2);
+}
+
+
/* Find previous bit set in SRC starting from and including BITNO.
- Return -1 if SRC empty. */
-int
-bitset_prev (src, bitno)
- bitset src;
- bitset_bindex bitno;
+ Return BITSET_BINDEX_MAX if SRC empty. */
+bitset_bindex
+bitset_prev (bitset src, bitset_bindex bitno)
{
bitset_bindex val;
bitset_bindex next = bitno;
- if (!bitset_reverse_list (src, &val, 1, &next))
- return -1;
+ if (!bitset_list_reverse (src, &val, 1, &next))
+ return BITSET_BINDEX_MAX;
return val;
}
/* Find first set bit. */
-int
-bitset_first (src)
- bitset src;
+bitset_bindex
+bitset_first (bitset src)
{
return bitset_next (src, 0);
}
/* Find last set bit. */
-int
-bitset_last (src)
- bitset src;
+bitset_bindex
+bitset_last (bitset src)
{
return bitset_prev (src, 0);
}
+/* Is BITNO in SRC the only set bit? */
+bool
+bitset_only_set_p (bitset src, bitset_bindex bitno)
+{
+ bitset_bindex val[2];
+ bitset_bindex next = 0;
+
+ if (bitset_list (src, val, 2, &next) != 1)
+ return false;
+ return val[0] == bitno;
+}
+
+
+/* Print contents of bitset BSET to FILE. */
static void
-bitset_print (file, bset, verbose)
- FILE *file;
- bitset bset;
- int verbose;
+bitset_print (FILE *file, bitset bset, bool verbose)
{
- unsigned int i, pos;
+ unsigned int pos;
+ bitset_bindex i;
+ bitset_iterator iter;
if (verbose)
- fprintf (file, "n_bits = %d, set = {", bitset_size (bset));
+ fprintf (file, "n_bits = %lu, set = {",
+ (unsigned long int) bitset_size (bset));
pos = 30;
- BITSET_EXECUTE (bset, 0, i,
+ BITSET_FOR_EACH (iter, bset, i, 0)
{
if (pos > 70)
{
pos = 0;
}
- fprintf (file, "%d ", i);
+ fprintf (file, "%lu ", (unsigned long int) i);
pos += 1 + (i >= 10) + (i >= 100);
- });
+ };
if (verbose)
fprintf (file, "}\n");
}
-int
-bitset_copy (dst, src)
- bitset dst;
- bitset src;
+/* Dump bitset BSET to FILE. */
+void
+bitset_dump (FILE *file, bitset bset)
{
- unsigned int i;
-
- if (dst->ops == src->ops)
- return BITSET__COPY (dst, src);
-
- /* Convert bitset types. We assume that the DST bitset
- is large enough to hold the SRC bitset. */
- bitset_zero (dst);
- BITSET_EXECUTE (src, 0, i,
- {
- bitset_set (dst, i);
- });
-
- return 1;
+ bitset_print (file, bset, false);
}
-/* Return size in bits of bitset SRC. */
-int
-bitset_size (src)
- bitset src;
+/* Release memory associated with bitsets. */
+void
+bitset_release_memory (void)
{
- return BITSET__SIZE (src);
+ lbitset_release_memory ();
+ ebitset_release_memory ();
}
-/* DST = 0. */
-int
-bitset_zero (dst)
- bitset dst;
+/* Toggle bit BITNO in bitset BSET and the new value of the bit. */
+bool
+bitset_toggle_ (bitset bset, bitset_bindex bitno)
{
- return BITSET__OP1 (dst, BITSET_ZERO);
+ /* This routine is for completeness. It could be optimized if
+ required. */
+ if (bitset_test (bset, bitno))
+ {
+ bitset_reset (bset, bitno);
+ return false;
+ }
+ else
+ {
+ bitset_set (bset, bitno);
+ return true;
+ }
}
-/* DST = ~0. */
-int
-bitset_ones (dst)
- bitset dst;
+/* Return number of bits in bitset SRC. */
+bitset_bindex
+bitset_size_ (bitset src)
{
- return BITSET__OP1 (dst, BITSET_ONES);
+ return BITSET_NBITS_ (src);
}
-/* Return non-zero if all bits in bitset SRC are reset. */
-int
-bitset_empty_p (src)
- bitset src;
+/* Return number of bits set in bitset SRC. */
+bitset_bindex
+bitset_count_ (bitset src)
{
- return BITSET__OP1 (src, BITSET_EMPTY_P);
-}
-
+ bitset_bindex list[BITSET_LIST_SIZE];
+ bitset_bindex next;
+ bitset_bindex num;
+ bitset_bindex count;
-/* Return DST == DST | SRC. */
-int
-bitset_subset_p (dst, src)
- bitset dst;
- bitset src;
-{
- return BITSET__OP2 (dst, src, BITSET_SUBSET_P);
-}
+ /* This could be greatly sped up by adding a count method for each
+ bitset implementation that uses a direct technique (based on
+ masks) for counting the number of bits set in a word. */
+ next = 0;
+ for (count = 0; (num = bitset_list (src, list, BITSET_LIST_SIZE, &next));
+ count += num)
+ continue;
-/* Return DST == SRC. */
-int
-bitset_equal_p (dst, src)
- bitset dst;
- bitset src;
-{
- BITSET__CHECK2 (dst, src);
- return BITSET__OP2 (dst, src, BITSET_EQUAL_P);
+ return count;
}
-/* DST = ~SRC. */
-int
-bitset_not (dst, src)
- bitset dst;
- bitset src;
+/* DST = SRC. Return true if DST != SRC.
+ This is a fallback for the case where SRC and DST are different
+ bitset types. */
+bool
+bitset_copy_ (bitset dst, bitset src)
{
- BITSET__CHECK2 (dst, src);
- return BITSET__OP2 (dst, src, BITSET_NOT);
-}
+ bitset_bindex i;
+ bitset_iterator iter;
+ /* Convert bitset types. We assume that the DST bitset
+ is large enough to hold the SRC bitset. */
+ bitset_zero (dst);
+ BITSET_FOR_EACH (iter, src, i, 0)
+ {
+ bitset_set (dst, i);
+ };
-/* DST = SRC1 | SRC2. Return non-zero if DST != SRC1 | SRC2. */
-int
-bitset_or (dst, src1, src2)
- bitset dst;
- bitset src1;
- bitset src2;
-{
- BITSET__CHECK3 (dst, src1, src2);
- return BITSET__OP3 (dst, src1, src2, BITSET_OR);
+ return true;
}
-/* DST = SRC1 & SRC2. Return non-zero if DST != SRC1 & SRC2. */
-int
-bitset_and (dst, src1, src2)
- bitset dst;
- bitset src1;
- bitset src2;
+/* This is a fallback for implementations that do not support
+ four operand operations. */
+static inline bool
+bitset_op4_cmp (bitset dst, bitset src1, bitset src2, bitset src3,
+ enum bitset_ops op)
{
- BITSET__CHECK3 (dst, src1, src2);
- return BITSET__OP3 (dst, src1, src2, BITSET_AND);
-}
+ bool changed = false;
+ bool stats_enabled_save;
+ bitset tmp;
+ /* Create temporary bitset. */
+ stats_enabled_save = bitset_stats_enabled;
+ bitset_stats_enabled = false;
+ tmp = bitset_alloc (0, bitset_type_get (dst));
+ bitset_stats_enabled = stats_enabled_save;
-/* DST = SRC1 ^ SRC2. Return non-zero if DST != SRC1 ^ SRC2. */
-int
-bitset_xor (dst, src1, src2)
- bitset dst;
- bitset src1;
- bitset src2;
-{
- BITSET__CHECK3 (dst, src1, src2);
- return BITSET__OP3 (dst, src1, src2, BITSET_XOR);
-}
+ switch (op)
+ {
+ case BITSET_OP_OR_AND:
+ bitset_or (tmp, src1, src2);
+ changed = bitset_and_cmp (dst, src3, tmp);
+ break;
+ case BITSET_OP_AND_OR:
+ bitset_and (tmp, src1, src2);
+ changed = bitset_or_cmp (dst, src3, tmp);
+ break;
-/* DST = SRC1 & ~SRC2. Return non-zero if DST != SRC1 & ~SRC2. */
-int
-bitset_andn (dst, src1, src2)
- bitset dst;
- bitset src1;
- bitset src2;
-{
- BITSET__CHECK3 (dst, src1, src2);
- return BITSET__OP3 (dst, src1, src2, BITSET_ANDN);
-}
+ case BITSET_OP_ANDN_OR:
+ bitset_andn (tmp, src1, src2);
+ changed = bitset_or_cmp (dst, src3, tmp);
+ break;
+ default:
+ abort ();
+ }
-/* DST = SRC1 | ~SRC2. Return non-zero if DST != SRC1 | ~SRC2. */
-int
-bitset_orn (dst, src1, src2)
- bitset dst;
- bitset src1;
- bitset src2;
-{
- BITSET__CHECK3 (dst, src1, src2);
- return BITSET__OP3 (dst, src1, src2, BITSET_ORN);
+ bitset_free (tmp);
+ return changed;
}
-/* DST = (SRC1 | SRC2) & SRC3. Return non-zero if
- DST != (SRC1 | SRC2) & SRC3. */
-int
-bitset_or_and (dst, src1, src2, src3)
- bitset dst;
- bitset src1;
- bitset src2;
- bitset src3;
+/* DST = (SRC1 & SRC2) | SRC3. */
+void
+bitset_and_or_ (bitset dst, bitset src1, bitset src2, bitset src3)
{
- BITSET__CHECK4 (dst, src1, src2, src3);
- return BITSET__OP4 (dst, src1, src2, src3, BITSET_OR_AND);
+ bitset_and_or_cmp_ (dst, src1, src2, src3);
}
/* DST = (SRC1 & SRC2) | SRC3. Return non-zero if
DST != (SRC1 & SRC2) | SRC3. */
-int
-bitset_and_or (dst, src1, src2, src3)
- bitset dst;
- bitset src1;
- bitset src2;
- bitset src3;
+bool
+bitset_and_or_cmp_ (bitset dst, bitset src1, bitset src2, bitset src3)
{
- BITSET__CHECK4 (dst, src1, src2, src3);
- return BITSET__OP4 (dst, src1, src2, src3, BITSET_AND_OR);
+ return bitset_op4_cmp (dst, src1, src2, src3, BITSET_OP_AND_OR);
}
-/* Dump bitset BSET to FILE. */
+/* DST = (SRC1 & ~SRC2) | SRC3. */
void
-bitset_dump (file, bset)
- FILE *file;
- bitset bset;
-{
- bitset_print (file, bset, 0);
-}
-
-
-/* Function to be called from debugger to print bitset. */
-void
-debug_bitset (bset)
- bitset bset;
-{
- bitset_print (stderr, bset, 1);
-}
-
-
-/* Release memory associated with bitsets. */
-void
-bitset_release_memory ()
-{
- lbitset_release_memory ();
- ebitset_release_memory ();
-}
-
-
-#if BITSET_STATS
-int
-bitset_list (bset, list, num, next)
- bitset bset;
- bitset_bindex *list;
- bitset_bindex num;
- bitset_bindex *next;
-{
- bitset_bindex count;
-
- count = BITSET__LIST (bset, list, num, next);
-
- if (bitset_stats)
- {
- bitset_bindex tmp;
- bitset_bindex size;
- bitset_bindex i;
- enum bitset_type type;
-
- type = bset->ops->type;
- BITSET_STATS_LISTS_INC (bset);
-
- /* Log histogram of number of set bits. */
- for (i = 0, tmp = count; tmp; tmp >>= 1, i++)
- continue;
- if (i >= BITSET_LOG_COUNT_BINS)
- i = BITSET_LOG_COUNT_BINS - 1;
- BITSET_STATS_LIST_COUNTS_INC (bset, i);
-
- /* Log histogram of number of bits in set. */
- size = bitset_size (bset);
- for (i = 0, tmp = size; tmp; tmp >>= 1, i++)
- continue;
- if (i >= BITSET_LOG_SIZE_BINS)
- i = BITSET_LOG_SIZE_BINS - 1;
- BITSET_STATS_LIST_SIZES_INC (bset, i);
-
- /* Histogram of fraction of bits set. */
- i = size ? (count * BITSET_DENSITY_BINS) / size : 0;
- if (i >= BITSET_DENSITY_BINS)
- i = BITSET_DENSITY_BINS - 1;
- BITSET_STATS_LIST_DENSITY_INC (bset, i);
- }
- return count;
-}
-
-
-/* Print a percentage histogram with message MSG to FILE. */
-static void
-bitset_percent_histogram_print (file, name, msg, n_bins, bins)
- FILE *file;
- const char *name;
- const char *msg;
- unsigned int n_bins;
- unsigned int *bins;
-{
- unsigned int i;
- unsigned int total;
-
- total = 0;
- for (i = 0; i < n_bins; i++)
- total += bins[i];
-
- if (!total)
- return;
-
- fprintf (file, "%s %s", name, msg);
- for (i = 0; i < n_bins; i++)
- fprintf (file, "%.0f-%.0f%%\t%8d (%5.1f%%)\n",
- i * 100.0 / n_bins,
- (i + 1) * 100.0 / n_bins,
- bins[i], (100.0 * bins[i]) / total);
-}
-
-
-/* Print a log histogram with message MSG to FILE. */
-static void
-bitset_log_histogram_print (file, name, msg, n_bins, bins)
- FILE *file;
- const char *name;
- const char *msg;
- unsigned int n_bins;
- unsigned int *bins;
+bitset_andn_or_ (bitset dst, bitset src1, bitset src2, bitset src3)
{
- unsigned int i;
- unsigned int total;
- unsigned int max_width;
-
- total = 0;
- for (i = 0; i < n_bins; i++)
- total += bins[i];
-
- if (!total)
- return;
-
- /* 2 * ceil (log10(2) * (N - 1)) + 1 */
- max_width = 2 * (unsigned int)(0.30103 * (n_bins - 1) + 0.9999) + 1;
-
- fprintf (file, "%s %s", name, msg);
- for (i = 0; i < 2; i++)
- fprintf (file, "%*d\t%8d (%5.1f%%)\n",
- max_width, i, bins[i], 100.0 * bins[i] / total);
-
- /* Perhaps we should bail out once the histogram goes to zero. */
- for (; i < n_bins; i++)
- fprintf (file, "%*d-%d\t%8d (%5.1f%%)\n",
- max_width - ((unsigned int) (0.30103 * (i) + 0.9999) + 1),
- 1 << (i - 1), (1 << i) - 1, bins[i], (100.0 * bins[i]) / total);
+ bitset_andn_or_cmp_ (dst, src1, src2, src3);
}
-/* Print bitset statistics to FILE. */
-static void
-bitset_stats_print_1 (file, name, stats)
- FILE *file;
- const char *name;
- struct bitset_type_stats_struct *stats;
+/* DST = (SRC1 & ~SRC2) | SRC3. Return non-zero if
+ DST != (SRC1 & ~SRC2) | SRC3. */
+bool
+bitset_andn_or_cmp_ (bitset dst, bitset src1, bitset src2, bitset src3)
{
- if (!stats)
- return;
-
- fprintf (file, "%d %ss xmalloced, %d freed.\n",
- stats->xmallocs, name, stats->xfrees);
- fprintf (file, "%d %ss oballoced, %d freed.\n",
- stats->oballocs, name, stats->obfrees);
-
- fprintf (file, "%d bitset_lists\n", stats->lists);
-
- bitset_log_histogram_print (file, name, "count log histogram\n",
- BITSET_LOG_COUNT_BINS, stats->list_counts);
-
- bitset_log_histogram_print (file, name, "size log histogram\n",
- BITSET_LOG_SIZE_BINS, stats->list_sizes);
-
- bitset_percent_histogram_print (file, name, "density histogram\n",
- BITSET_DENSITY_BINS, stats->list_density);
-}
-
-
-/* Print all bitset statistics to FILE. */
-static void
-bitset_stats_print (file, verbose)
- FILE *file;
- int verbose ATTRIBUTE_UNUSED;
-{
- int i;
- static const char *names[] = BITSET__TYPE_NAMES;
-
- if (!bitset_stats)
- return;
-
- fprintf (file, "Bitset statistics:\n\n");
-
- if (bitset_stats->runs > 1)
- fprintf (file, "Accumulated runs = %d\n", bitset_stats->runs);
-
- for (i = 0; i < BITSET_TYPE_NUM; i++)
- bitset_stats_print_1 (file, names[i], &bitset_stats->types[i]);
+ return bitset_op4_cmp (dst, src1, src2, src3, BITSET_OP_ANDN_OR);
}
-#endif /* BITSET_STATS */
-/* Initialise bitset statistics logging. */
+/* DST = (SRC1 | SRC2) & SRC3. */
void
-bitset_stats_init ()
+bitset_or_and_ (bitset dst, bitset src1, bitset src2, bitset src3)
{
-#if BITSET_STATS
- bitset_stats = &bitset_stats_data;
- bitset_stats_read ();
-#endif /* BITSET_STATS */
+ bitset_or_and_cmp_ (dst, src1, src2, src3);
}
-/* Read bitset statistics file. */
-static void
-bitset_stats_read ()
-{
- FILE *file;
-
- if (!bitset_stats)
- return;
-
- file = fopen (BITSET_STATS_FILE, "r");
- if (file)
- {
- if (fread (&bitset_stats_data, sizeof (bitset_stats_data),
- 1, file) != 1)
- {
- if (ferror (file))
- perror ("Could not read stats file");
- else
- fprintf (stderr, "Bad stats file size\n");
- }
- fclose (file);
- }
- bitset_stats_data.runs++;
-}
-
-
-/* Write bitset statistics file. */
-static void
-bitset_stats_write ()
-{
- FILE *file;
-
- if (!bitset_stats)
- return;
-
- file = fopen (BITSET_STATS_FILE, "w");
- if (file)
- {
- if (fwrite (&bitset_stats_data, sizeof (bitset_stats_data),
- 1, file) != 1)
- perror ("Could not write stats file");
- fclose (file);
- }
- else
- perror ("Could not open stats file for writing");
-}
-
-
-/* Dump bitset statistics to FILE. */
-void
-bitset_stats_dump (file)
- FILE *file;
+/* DST = (SRC1 | SRC2) & SRC3. Return non-zero if
+ DST != (SRC1 | SRC2) & SRC3. */
+bool
+bitset_or_and_cmp_ (bitset dst, bitset src1, bitset src2, bitset src3)
{
-#if BITSET_STATS
- bitset_stats_print (file, 0);
- bitset_stats_write ();
-#endif /* BITSET_STATS */
+ return bitset_op4_cmp (dst, src1, src2, src3, BITSET_OP_OR_AND);
}
-/* Function to be called from debugger to print bitset stats. */
+/* Function to be called from debugger to print bitset. */
void
-debug_bitset_stats (void)
+debug_bitset (bitset bset)
{
-#if BITSET_STATS
- bitset_stats_print (stderr, 1);
-#endif /* BITSET_STATS */
+ if (bset)
+ bitset_print (stderr, bset, true);
}
projects / bison.git / blobdiff