void
TclFinalizeAllocSubsystem(void)
{
unsigned int i;
struct block *blockPtr, *nextPtr;
Tcl_MutexLock(allocMutexPtr);
for (blockPtr = blockList; blockPtr != NULL; blockPtr = nextPtr) {
nextPtr = blockPtr->nextPtr;
TclpSysFree(blockPtr);
}
blockList = NULL;
for (blockPtr = bigBlocks.nextPtr; blockPtr != &bigBlocks; ) {
nextPtr = blockPtr->nextPtr;
TclpSysFree(blockPtr);
blockPtr = nextPtr;
}
bigBlocks.nextPtr = &bigBlocks;
bigBlocks.prevPtr = &bigBlocks;
for (i=0 ; i<NBUCKETS ; i++) {
nextf[i] = NULL;
#ifdef MSTATS
numMallocs[i] = 0;
#endif
}
#ifdef MSTATS
numMallocs[i] = 0;
#endif
Tcl_MutexUnlock(allocMutexPtr);
}
void TclpThreadDeleteKey(void *keyPtr) {
pthread_key_t *key = keyPtr;
if (pthread_key_delete(*key)) {
Tcl_Panic("unable to delete key!");
}
TclpSysFree(keyPtr);
}
void TclpThreadDeleteKey(void *keyPtr) {
DWORD *key = keyPtr;
if (!TlsFree(*key)) {
Tcl_Panic("unable to delete key");
}
TclpSysFree(keyPtr);
}
void
Tcl_DeleteHashTable(
register Tcl_HashTable *tablePtr) /* Table to delete. */
{
register Tcl_HashEntry *hPtr, *nextPtr;
const Tcl_HashKeyType *typePtr;
int i;
if (tablePtr->keyType == TCL_STRING_KEYS) {
typePtr = &tclStringHashKeyType;
} else if (tablePtr->keyType == TCL_ONE_WORD_KEYS) {
typePtr = &tclOneWordHashKeyType;
} else if (tablePtr->keyType == TCL_CUSTOM_TYPE_KEYS
|| tablePtr->keyType == TCL_CUSTOM_PTR_KEYS) {
typePtr = tablePtr->typePtr;
} else {
typePtr = &tclArrayHashKeyType;
}
/*
* Free up all the entries in the table.
*/
for (i = 0; i < tablePtr->numBuckets; i++) {
hPtr = tablePtr->buckets[i];
while (hPtr != NULL) {
nextPtr = hPtr->nextPtr;
if (typePtr->freeEntryProc) {
typePtr->freeEntryProc (hPtr);
} else {
ckfree((char *) hPtr);
}
hPtr = nextPtr;
}
}
/*
* Free up the bucket array, if it was dynamically allocated.
*/
if (tablePtr->buckets != tablePtr->staticBuckets) {
if (typePtr->flags & TCL_HASH_KEY_SYSTEM_HASH) {
TclpSysFree((char *) tablePtr->buckets);
} else {
ckfree((char *) tablePtr->buckets);
}
}
/*
* Arrange for panics if the table is used again without
* re-initialization.
*/
tablePtr->findProc = BogusFind;
tablePtr->createProc = BogusCreate;
}
void
TclFinalizeThreadStorage(void)
{
Tcl_HashSearch search; /* We need to hit every thread with this
* search. */
Tcl_HashEntry *hPtr; /* Hash entry for current thread in master
* table. */
Tcl_MutexLock(&threadStorageLock);
/*
* We are going to delete the hash table for every thread now. This hash
* table should be empty at this point, except for one entry for the
* current thread.
*/
for (hPtr = Tcl_FirstHashEntry(&threadStorageHashTable, &search);
hPtr != NULL; hPtr = Tcl_NextHashEntry(&search)) {
Tcl_HashTable *hashTablePtr = Tcl_GetHashValue(hPtr);
if (hashTablePtr != NULL) {
/*
* Delete thread specific hash table for the thread in question
* and free the struct.
*/
Tcl_DeleteHashTable(hashTablePtr);
TclpSysFree((char *)hashTablePtr);
}
/*
* Delete thread specific entry from master hash table.
*/
Tcl_SetHashValue(hPtr, NULL);
}
Tcl_DeleteHashTable(&threadStorageHashTable);
/*
* Clear out the thread storage cache as well.
*/
memset((void*) &threadStorageCache, 0,
sizeof(ThreadStorage) * STORAGE_CACHE_SLOTS);
/*
* Reset this to zero, it will be set to STORAGE_FIRST_KEY if the thread
* storage subsystem gets reinitialized
*/
nextThreadStorageKey = STORAGE_INVALID_KEY;
Tcl_MutexUnlock(&threadStorageLock);
}
void
TclpFree(
char *oldPtr) /* Pointer to memory to free. */
{
register long size;
register union overhead *overPtr;
struct block *bigBlockPtr;
if (oldPtr == NULL) {
return;
}
Tcl_MutexLock(allocMutexPtr);
overPtr = (union overhead *)((caddr_t)oldPtr - sizeof (union overhead));
ASSERT(overPtr->overMagic0 == MAGIC); /* make sure it was in use */
ASSERT(overPtr->overMagic1 == MAGIC);
if (overPtr->overMagic0 != MAGIC || overPtr->overMagic1 != MAGIC) {
Tcl_MutexUnlock(allocMutexPtr);
return;
}
RANGE_ASSERT(overPtr->rangeCheckMagic == RMAGIC);
RANGE_ASSERT(BLOCK_END(overPtr) == RMAGIC);
size = overPtr->bucketIndex;
if (size == 0xff) {
#ifdef MSTATS
numMallocs[NBUCKETS]--;
#endif
bigBlockPtr = (struct block *) overPtr - 1;
bigBlockPtr->prevPtr->nextPtr = bigBlockPtr->nextPtr;
bigBlockPtr->nextPtr->prevPtr = bigBlockPtr->prevPtr;
TclpSysFree(bigBlockPtr);
Tcl_MutexUnlock(allocMutexPtr);
return;
}
ASSERT(size < NBUCKETS);
overPtr->next = nextf[size]; /* also clobbers overMagic */
nextf[size] = overPtr;
#ifdef MSTATS
numMallocs[size]--;
#endif
Tcl_MutexUnlock(allocMutexPtr);
}
static void
RebuildTable(
register Tcl_HashTable *tablePtr) /* Table to enlarge. */
{
int oldSize, count, index;
Tcl_HashEntry **oldBuckets;
register Tcl_HashEntry **oldChainPtr, **newChainPtr;
register Tcl_HashEntry *hPtr;
const Tcl_HashKeyType *typePtr;
if (tablePtr->keyType == TCL_STRING_KEYS) {
typePtr = &tclStringHashKeyType;
} else if (tablePtr->keyType == TCL_ONE_WORD_KEYS) {
typePtr = &tclOneWordHashKeyType;
} else if (tablePtr->keyType == TCL_CUSTOM_TYPE_KEYS
|| tablePtr->keyType == TCL_CUSTOM_PTR_KEYS) {
typePtr = tablePtr->typePtr;
} else {
typePtr = &tclArrayHashKeyType;
}
oldSize = tablePtr->numBuckets;
oldBuckets = tablePtr->buckets;
/*
* Allocate and initialize the new bucket array, and set up hashing
* constants for new array size.
*/
tablePtr->numBuckets *= 4;
if (typePtr->flags & TCL_HASH_KEY_SYSTEM_HASH) {
tablePtr->buckets = (Tcl_HashEntry **) TclpSysAlloc((unsigned)
(tablePtr->numBuckets * sizeof(Tcl_HashEntry *)), 0);
} else {
tablePtr->buckets = (Tcl_HashEntry **) ckalloc((unsigned)
(tablePtr->numBuckets * sizeof(Tcl_HashEntry *)));
}
for (count = tablePtr->numBuckets, newChainPtr = tablePtr->buckets;
count > 0; count--, newChainPtr++) {
*newChainPtr = NULL;
}
tablePtr->rebuildSize *= 4;
tablePtr->downShift -= 2;
tablePtr->mask = (tablePtr->mask << 2) + 3;
/*
* Rehash all of the existing entries into the new bucket array.
*/
for (oldChainPtr = oldBuckets; oldSize > 0; oldSize--, oldChainPtr++) {
for (hPtr = *oldChainPtr; hPtr != NULL; hPtr = *oldChainPtr) {
*oldChainPtr = hPtr->nextPtr;
#if TCL_HASH_KEY_STORE_HASH
if (typePtr->hashKeyProc == NULL
|| typePtr->flags & TCL_HASH_KEY_RANDOMIZE_HASH) {
index = RANDOM_INDEX (tablePtr, hPtr->hash);
} else {
index = PTR2UINT(hPtr->hash) & tablePtr->mask;
}
hPtr->nextPtr = tablePtr->buckets[index];
tablePtr->buckets[index] = hPtr;
#else
void *key = Tcl_GetHashKey(tablePtr, hPtr);
if (typePtr->hashKeyProc) {
unsigned int hash;
hash = typePtr->hashKeyProc(tablePtr, key);
if (typePtr->flags & TCL_HASH_KEY_RANDOMIZE_HASH) {
index = RANDOM_INDEX (tablePtr, hash);
} else {
index = hash & tablePtr->mask;
}
} else {
index = RANDOM_INDEX (tablePtr, key);
}
hPtr->bucketPtr = &(tablePtr->buckets[index]);
hPtr->nextPtr = *hPtr->bucketPtr;
*hPtr->bucketPtr = hPtr;
#endif
}
}
/*
* Free up the old bucket array, if it was dynamically allocated.
*/
if (oldBuckets != tablePtr->staticBuckets) {
if (typePtr->flags & TCL_HASH_KEY_SYSTEM_HASH) {
TclpSysFree((char *) oldBuckets);
} else {
ckfree((char *) oldBuckets);
}
}
}
void
TclpFinalizeThreadDataThread(void)
{
Tcl_ThreadId id = Tcl_GetCurrentThread();
/* Id of the thread to finalize. */
int index = PTR2UINT(id) % STORAGE_CACHE_SLOTS;
Tcl_HashEntry *hPtr; /* Hash entry for current thread in master
* table. */
Tcl_HashTable* hashTablePtr;/* Pointer to the hash table holding TSD
* blocks for the current thread*/
Tcl_HashSearch search; /* Search object to walk the TSD blocks in the
* designated thread */
Tcl_HashEntry *hPtr2; /* Hash entry for a TSD block in the
* designated thread. */
Tcl_MutexLock(&threadStorageLock);
hPtr = Tcl_FindHashEntry(&threadStorageHashTable, (char*)id);
if (hPtr == NULL) {
hashTablePtr = NULL;
} else {
/*
* We found it, extract the hash table pointer.
*/
hashTablePtr = Tcl_GetHashValue(hPtr);
Tcl_DeleteHashEntry(hPtr);
/*
* Make sure cache entry for this thread is NULL.
*/
if (threadStorageCache[index].id == id) {
/*
* We do not step on another thread's cache entry. This is
* especially important if we are creating and exiting a lot of
* threads.
*/
threadStorageCache[index].id = STORAGE_INVALID_THREAD;
threadStorageCache[index].hashTablePtr = NULL;
}
}
Tcl_MutexUnlock(&threadStorageLock);
/*
* The thread's hash table has been extracted and removed from the master
* hash table. Now clean up the thread.
*/
if (hashTablePtr != NULL) {
/*
* Free all TSD
*/
for (hPtr2 = Tcl_FirstHashEntry(hashTablePtr, &search); hPtr2 != NULL;
hPtr2 = Tcl_NextHashEntry(&search)) {
void *blockPtr = Tcl_GetHashValue(hPtr2);
if (blockPtr != NULL) {
/*
* The block itself was allocated in Tcl_GetThreadData using
* ckalloc; use ckfree to dispose of it.
*/
ckfree(blockPtr);
}
}
/*
* Delete thread specific hash table and free the struct.
*/
Tcl_DeleteHashTable(hashTablePtr);
TclpSysFree((char *) hashTablePtr);
}
}
static void
FreeThreadStorageEntry(
Tcl_HashEntry *hPtr) /* Hash entry to free. */
{
TclpSysFree((char *) hPtr);
}
