gecko-dev/tools/leaky/dict.cpp

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// The contents of this file are subject to the Mozilla Public License
// Version 1.1 (the "License"); you may not use this file except in
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// compliance with the License. You may obtain a copy of the License
// at http://www.mozilla.org/MPL/
//
// Software distributed under the License is distributed on an "AS IS"
// basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
// the License for the specific language governing rights and
// limitations under the License.
//
// The Initial Developer of the Original Code is Kipp E.B. Hickman.
#include <malloc.h>
#include "dict.h"
#ifdef __QNXNTO__
/* Need definition of NULL */
#include <stdio.h>
#endif
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MallocDict::MallocDict(int nb)
{
numBuckets = nb;
buckets = (MallocDictEntry**) calloc(numBuckets, sizeof(MallocDictEntry*));
rewind();
}
void MallocDict::rewind(void)
{
iterNextBucket = -1;
iterNextEntry = 0;
}
malloc_log_entry* MallocDict::next(void)
{
if (iterNextEntry) {
iterNextEntry = iterNextEntry->next;
}
while (!iterNextEntry) {
iterNextBucket++;
if (iterNextBucket >= numBuckets) {
return 0;
}
iterNextEntry = buckets[iterNextBucket];
}
return iterNextEntry->logEntry;
}
malloc_log_entry** MallocDict::find(u_long addr)
{
u_long hash = addr % numBuckets;
MallocDictEntry* mde = buckets[hash];
while (mde) {
if (mde->addr == addr) {
return &mde->logEntry;
}
mde = mde->next;
}
return 0;
}
void MallocDict::add(u_long addr, malloc_log_entry *lep)
{
u_long hash = addr % numBuckets;
MallocDictEntry** mdep = &buckets[hash];
MallocDictEntry* mde = new MallocDictEntry;
mde->addr = addr;
mde->logEntry = lep;
mde->next = *mdep;
*mdep = mde;
}
void MallocDict::remove(u_long addr)
{
u_long hash = addr % numBuckets;
MallocDictEntry** mdep = &buckets[hash];
MallocDictEntry* mde;
while (NULL != (mde = *mdep)) {
if (mde->addr == addr) {
*mdep = mde->next;
/*XXX delete mde; */
return;
}
mdep = &mde->next;
}
}