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/***********************************************************************
* *
* This software is part of the ast package *
* Copyright (c) 1985-2009 AT&T Intellectual Property *
* and is licensed under the *
* Common Public License, Version 1.0 *
* by AT&T Intellectual Property *
* *
* A copy of the License is available at *
* http://www.opensource.org/licenses/cpl1.0.txt *
* (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9) *
* *
* Information and Software Systems Research *
* AT&T Research *
* Florham Park NJ *
* *
* Glenn Fowler <gsf@research.att.com> *
* David Korn <dgk@research.att.com> *
* Phong Vo <kpv@research.att.com> *
* *
***********************************************************************/
#pragma prototyped
/*
* Glenn Fowler
* AT&T Bell Laboratories
*
* hash table library
*/
#include "hashlib.h"
/*
* dump HASH_* flags
*/
static void
dumpflags(register int flags)
{
if (flags & HASH_ALLOCATE) sfprintf(sfstderr, "allocate ");
if (flags & HASH_BUCKET) sfprintf(sfstderr, "bucket ");
if (flags & HASH_FIXED) sfprintf(sfstderr, "fixed ");
if (flags & HASH_HASHED) sfprintf(sfstderr, "hashed ");
if (flags & HASH_RESIZE) sfprintf(sfstderr, "resize ");
if (flags & HASH_STATIC) sfprintf(sfstderr, "static ");
if (flags & HASH_VALUE) sfprintf(sfstderr, "value ");
}
/*
* dump hash table bucket info
*/
static void
dumpbucket(register Hash_table_t* tab, int flags)
{
register Hash_bucket_t** sp;
register Hash_bucket_t* b;
Hash_bucket_t** sx;
int n;
unsigned char* s;
NoP(flags);
sx = tab->table + tab->size;
for (sp = tab->table; sp < sx; sp++)
{
n = 0;
for (b = *sp; b; b = b->next)
if (!(b->hash & HASH_DELETED) && (!(tab->flags & HASH_VALUE) || b->value))
n++;
if (n)
{
sfprintf(sfstderr, "%5d %2d :", sp - tab->table, n);
for (b = *sp; b; b = b->next)
if (!(b->hash & HASH_DELETED) && (!(tab->flags & HASH_VALUE) || b->value))
{
if (n = tab->root->namesize)
{
sfprintf(sfstderr, " 0x");
s = (unsigned char*)hashname(b);
while (n-- > 0)
sfprintf(sfstderr, "%02x", *s++);
}
else sfprintf(sfstderr, " %s", hashname(b));
if (b->hash & HASH_FLAGS)
{
sfprintf(sfstderr, "|");
if (b->hash & HASH_HIDES) sfprintf(sfstderr, "hides|");
if (b->hash & HASH_HIDDEN) sfprintf(sfstderr, "hidden|");
if (b->hash & HASH_KEEP) sfprintf(sfstderr, "keep|");
if (b->hash & HASH_OPAQUED) sfprintf(sfstderr, "opaque|");
}
if (tab->flags & HASH_VALUE) sfprintf(sfstderr, "=0x%08lx", (long)b->value);
}
sfprintf(sfstderr, "\n");
}
}
sfprintf(sfstderr, "\n");
}
/*
* dump info on a single table
*/
static void
dumptable(register Hash_table_t* tab, register int flags)
{
Hash_table_t* scope;
int level;
sfprintf(sfstderr, " name: %s", tab->name ? tab->name : "*no name*");
if (scope = tab->scope)
{
level = 1;
while (scope = scope->scope) level++;
sfprintf(sfstderr, " level %d scope on 0x%08lx", level, (unsigned long)tab->scope);
}
sfprintf(sfstderr, "\n");
sfprintf(sfstderr, " address: 0x%08lx\n", (unsigned long)tab);
sfprintf(sfstderr, " flags: ");
if (tab->frozen) sfprintf(sfstderr, "frozen=%d ", tab->frozen);
dumpflags(tab->flags);
sfprintf(sfstderr, "\n");
sfprintf(sfstderr, " size: %d\n", tab->size);
sfprintf(sfstderr, " buckets: %d\n", tab->buckets);
sfprintf(sfstderr, " bucketsize: %d\n", tab->bucketsize * sizeof(char*));
sfprintf(sfstderr, "\n");
if ((flags | tab->flags) & HASH_BUCKET) dumpbucket(tab, flags);
}
/*
* dump hash table root info
*/
static void
dumproot(register Hash_root_t* root, register int flags)
{
register Hash_table_t* tab;
sfprintf(sfstderr, " root\n");
sfprintf(sfstderr, " address: 0x%08lx\n", (unsigned long)root);
sfprintf(sfstderr, " flags: ");
dumpflags(root->flags);
if (root->namesize) sfprintf(sfstderr, "namesize=%d ", root->namesize);
if (root->local->alloc) sfprintf(sfstderr, "alloc=0x%08lx ", (unsigned long)root->local->alloc);
if (root->local->compare) sfprintf(sfstderr, "compare=0x%08lx ", (unsigned long)root->local->compare);
if (root->local->free) sfprintf(sfstderr, "free=0x%08lx ", (unsigned long)root->local->free);
if (root->local->hash) sfprintf(sfstderr, "hash=0x%08lx ", (unsigned long)root->local->hash);
if (root->local->region) sfprintf(sfstderr, "region=0x%08lx handle=0x%08lx ", (unsigned long)root->local->region, (unsigned long)root->local->handle);
sfprintf(sfstderr, "\n");
sfprintf(sfstderr, " meanchain: %d\n", root->meanchain);
sfprintf(sfstderr, " accesses: %d\n", root->accesses);
sfprintf(sfstderr, " collisions: %d\n", root->collisions);
sfprintf(sfstderr, "\n");
for (tab = root->references; tab; tab = tab->next)
dumptable(tab, flags);
}
/*
* dump hash table accounting info
* if tab is 0 then dump all tables in hash_info.list
* flags are HASH_* flags that specifiy optional dump info
*/
void
hashdump(register Hash_table_t* tab, int flags)
{
register Hash_root_t* root;
sfprintf(sfstderr, "\nhash table information:\n\n");
if (tab) dumproot(tab->root, flags);
else for (root = hash_info.list; root; root = root->next)
dumproot(root, flags);
sfsync(sfstderr);
}
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