mirror of https://github.com/OpenTTD/OpenTTD
(svn r108) -Fix: anon-union problems on GCC2 compilers
parent
a770903df7
commit
99253905bb
158
queue.c
158
queue.c
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@ -6,31 +6,31 @@ void Stack_Clear(Queue* q, bool free_values)
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{
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uint i;
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if (free_values)
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for (i=0;i<q->stack.size;i++)
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free(q->stack.elements[i]);
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q->stack.size = 0;
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for (i=0;i<q->data.stack.size;i++)
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free(q->data.stack.elements[i]);
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q->data.stack.size = 0;
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}
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void Stack_Free(Queue* q, bool free_values)
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{
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q->clear(q, free_values);
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free(q->stack.elements);
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free(q->data.stack.elements);
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if (q->freeq)
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free(q);
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}
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bool Stack_Push(Queue* q, void* item, int priority) {
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if (q->stack.size == q->stack.max_size)
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if (q->data.stack.size == q->data.stack.max_size)
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return false;
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q->stack.elements[q->stack.size++] = item;
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q->data.stack.elements[q->data.stack.size++] = item;
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return true;
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}
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void* Stack_Pop(Queue* q) {
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void* result;
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if (q->stack.size == 0)
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if (q->data.stack.size == 0)
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return NULL;
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result = q->stack.elements[--q->stack.size];
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result = q->data.stack.elements[--q->data.stack.size];
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return result;
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}
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@ -46,9 +46,9 @@ Queue* init_stack(Queue* q, uint max_size) {
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q->del = Stack_Delete;
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q->clear = Stack_Clear;
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q->free = Stack_Free;
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q->stack.max_size = max_size;
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q->stack.size = 0;
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q->stack.elements = malloc(max_size * sizeof(void*));
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q->data.stack.max_size = max_size;
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q->data.stack.size = 0;
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q->data.stack.elements = malloc(max_size * sizeof(void*));
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q->freeq = false;
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return q;
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}
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@ -69,43 +69,43 @@ void Fifo_Clear(Queue* q, bool free_values)
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{
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uint head, tail;
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if (free_values) {
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head = q->fifo.head;
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tail = q->fifo.tail; /* cache for speed */
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head = q->data.fifo.head;
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tail = q->data.fifo.tail; /* cache for speed */
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while (head != tail) {
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free(q->fifo.elements[tail]);
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tail = (tail + 1) % q->fifo.max_size;
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free(q->data.fifo.elements[tail]);
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tail = (tail + 1) % q->data.fifo.max_size;
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}
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}
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q->fifo.head = q->fifo.tail = 0;
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q->data.fifo.head = q->data.fifo.tail = 0;
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}
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void Fifo_Free(Queue* q, bool free_values)
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{
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q->clear(q, free_values);
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free(q->fifo.elements);
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free(q->data.fifo.elements);
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if (q->freeq)
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free(q);
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}
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bool Fifo_Push(Queue* q, void* item, int priority) {
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uint next = (q->fifo.head + 1) % q->fifo.max_size;
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if (next == q->fifo.tail)
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uint next = (q->data.fifo.head + 1) % q->data.fifo.max_size;
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if (next == q->data.fifo.tail)
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return false;
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q->fifo.elements[q->fifo.head] = item;
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q->data.fifo.elements[q->data.fifo.head] = item;
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q->fifo.head = next;
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q->data.fifo.head = next;
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return true;
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}
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void* Fifo_Pop(Queue* q) {
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void* result;
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if (q->fifo.head == q->fifo.tail)
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if (q->data.fifo.head == q->data.fifo.tail)
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return NULL;
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result = q->fifo.elements[q->fifo.tail];
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result = q->data.fifo.elements[q->data.fifo.tail];
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q->fifo.tail = (q->fifo.tail + 1) % q->fifo.max_size;
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q->data.fifo.tail = (q->data.fifo.tail + 1) % q->data.fifo.max_size;
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return result;
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}
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@ -120,10 +120,10 @@ Queue* init_fifo(Queue* q, uint max_size) {
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q->del = Fifo_Delete;
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q->clear = Fifo_Clear;
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q->free = Fifo_Free;
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q->fifo.max_size = max_size;
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q->fifo.head = 0;
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q->fifo.tail = 0;
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q->fifo.elements = malloc(max_size * sizeof(void*));
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q->data.fifo.max_size = max_size;
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q->data.fifo.head = 0;
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q->data.fifo.tail = 0;
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q->data.fifo.elements = malloc(max_size * sizeof(void*));
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q->freeq = false;
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return q;
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}
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@ -142,7 +142,7 @@ Queue* new_Fifo(uint max_size)
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*/
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void InsSort_Clear(Queue* q, bool free_values) {
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InsSortNode* node = q->inssort.first;
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InsSortNode* node = q->data.inssort.first;
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InsSortNode* prev;
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while (node != NULL) {
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if (free_values)
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@ -152,7 +152,7 @@ void InsSort_Clear(Queue* q, bool free_values) {
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free(prev);
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}
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q->inssort.first = NULL;
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q->data.inssort.first = NULL;
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}
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void InsSort_Free(Queue* q, bool free_values)
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@ -167,11 +167,11 @@ bool InsSort_Push(Queue* q, void* item, int priority) {
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if (newnode == NULL) return false;
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newnode->item = item;
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newnode->priority = priority;
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if (q->inssort.first == NULL || q->inssort.first->priority >= priority) {
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newnode->next = q->inssort.first;
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q->inssort.first = newnode;
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if (q->data.inssort.first == NULL || q->data.inssort.first->priority >= priority) {
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newnode->next = q->data.inssort.first;
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q->data.inssort.first = newnode;
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} else {
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InsSortNode* node = q->inssort.first;
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InsSortNode* node = q->data.inssort.first;
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while( node != NULL ) {
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if (node->next == NULL || node->next->priority >= priority) {
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newnode->next = node->next;
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@ -185,14 +185,14 @@ bool InsSort_Push(Queue* q, void* item, int priority) {
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}
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void* InsSort_Pop(Queue* q) {
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InsSortNode* node = q->inssort.first;
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InsSortNode* node = q->data.inssort.first;
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void* result;
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if (node == NULL)
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return NULL;
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result = node->item;
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q->inssort.first = q->inssort.first->next;
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if (q->inssort.first)
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assert(q->inssort.first->priority >= node->priority);
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q->data.inssort.first = q->data.inssort.first->next;
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if (q->data.inssort.first)
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assert(q->data.inssort.first->priority >= node->priority);
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free(node);
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return result;
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}
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@ -208,7 +208,7 @@ void init_InsSort(Queue* q) {
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q->del = InsSort_Delete;
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q->clear = InsSort_Clear;
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q->free = InsSort_Free;
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q->inssort.first = NULL;
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q->data.inssort.first = NULL;
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q->freeq = false;
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}
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@ -231,16 +231,16 @@ Queue* new_InsSort() {
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// To make our life easy, we make the next define
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// Because Binary Heaps works with array from 1 to n,
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// and C with array from 0 to n-1, and we don't like typing
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// q->binaryheap.elements[i-1] every time, we use this define.
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#define BIN_HEAP_ARR(i) q->binaryheap.elements[((i)-1) >> BINARY_HEAP_BLOCKSIZE_BITS][((i)-1) & BINARY_HEAP_BLOCKSIZE_MASK]
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// q->data.binaryheap.elements[i-1] every time, we use this define.
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#define BIN_HEAP_ARR(i) q->data.binaryheap.elements[((i)-1) >> BINARY_HEAP_BLOCKSIZE_BITS][((i)-1) & BINARY_HEAP_BLOCKSIZE_MASK]
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void BinaryHeap_Clear(Queue* q, bool free_values)
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{
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/* Free all items if needed and free all but the first blocks of
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* memory */
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uint i,j;
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for (i=0;i<q->binaryheap.blocks;i++) {
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if (q->binaryheap.elements[i] == NULL) {
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for (i=0;i<q->data.binaryheap.blocks;i++) {
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if (q->data.binaryheap.elements[i] == NULL) {
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/* No more allocated blocks */
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break;
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}
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@ -248,29 +248,29 @@ void BinaryHeap_Clear(Queue* q, bool free_values)
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if (free_values)
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for (j=0;j<(1<<BINARY_HEAP_BLOCKSIZE_BITS);j++) {
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/* For every element in the block */
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if ((q->binaryheap.size >> BINARY_HEAP_BLOCKSIZE_BITS) == i
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&& (q->binaryheap.size & BINARY_HEAP_BLOCKSIZE_MASK) == j)
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if ((q->data.binaryheap.size >> BINARY_HEAP_BLOCKSIZE_BITS) == i
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&& (q->data.binaryheap.size & BINARY_HEAP_BLOCKSIZE_MASK) == j)
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break; /* We're past the last element */
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free(q->binaryheap.elements[i][j].item);
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free(q->data.binaryheap.elements[i][j].item);
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}
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if (i != 0) {
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/* Leave the first block of memory alone */
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free(q->binaryheap.elements[i]);
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q->binaryheap.elements[i] = NULL;
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free(q->data.binaryheap.elements[i]);
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q->data.binaryheap.elements[i] = NULL;
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}
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}
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q->binaryheap.size = 0;
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q->binaryheap.blocks = 1;
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q->data.binaryheap.size = 0;
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q->data.binaryheap.blocks = 1;
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}
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void BinaryHeap_Free(Queue* q, bool free_values)
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{
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uint i;
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q->clear(q, free_values);
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for (i=0;i<q->binaryheap.blocks;i++) {
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if (q->binaryheap.elements[i] == NULL)
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for (i=0;i<q->data.binaryheap.blocks;i++) {
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if (q->data.binaryheap.elements[i] == NULL)
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break;
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free(q->binaryheap.elements[i]);
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free(q->data.binaryheap.elements[i]);
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}
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if (q->freeq)
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free(q);
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@ -278,33 +278,33 @@ void BinaryHeap_Free(Queue* q, bool free_values)
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bool BinaryHeap_Push(Queue* q, void* item, int priority) {
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#ifdef QUEUE_DEBUG
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printf("[BinaryHeap] Pushing an element. There are %d elements left\n", q->binaryheap.size);
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printf("[BinaryHeap] Pushing an element. There are %d elements left\n", q->data.binaryheap.size);
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#endif
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if (q->binaryheap.size == q->binaryheap.max_size)
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if (q->data.binaryheap.size == q->data.binaryheap.max_size)
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return false;
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assert(q->binaryheap.size < q->binaryheap.max_size);
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assert(q->data.binaryheap.size < q->data.binaryheap.max_size);
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if (q->binaryheap.elements[q->binaryheap.size >> BINARY_HEAP_BLOCKSIZE_BITS] == NULL) {
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if (q->data.binaryheap.elements[q->data.binaryheap.size >> BINARY_HEAP_BLOCKSIZE_BITS] == NULL) {
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/* The currently allocated blocks are full, allocate a new one */
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assert((q->binaryheap.size & BINARY_HEAP_BLOCKSIZE_MASK) == 0);
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q->binaryheap.elements[q->binaryheap.size >> BINARY_HEAP_BLOCKSIZE_BITS] = malloc(BINARY_HEAP_BLOCKSIZE * sizeof(BinaryHeapNode));
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q->binaryheap.blocks++;
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assert((q->data.binaryheap.size & BINARY_HEAP_BLOCKSIZE_MASK) == 0);
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q->data.binaryheap.elements[q->data.binaryheap.size >> BINARY_HEAP_BLOCKSIZE_BITS] = malloc(BINARY_HEAP_BLOCKSIZE * sizeof(BinaryHeapNode));
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q->data.binaryheap.blocks++;
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#ifdef QUEUE_DEBUG
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printf("[BinaryHeap] Increasing size of elements to %d nodes\n",q->binaryheap.blocks * BINARY_HEAP_BLOCKSIZE);
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printf("[BinaryHeap] Increasing size of elements to %d nodes\n",q->data.binaryheap.blocks * BINARY_HEAP_BLOCKSIZE);
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#endif
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}
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// Add the item at the end of the array
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BIN_HEAP_ARR(q->binaryheap.size+1).priority = priority;
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BIN_HEAP_ARR(q->binaryheap.size+1).item = item;
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q->binaryheap.size++;
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BIN_HEAP_ARR(q->data.binaryheap.size+1).priority = priority;
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BIN_HEAP_ARR(q->data.binaryheap.size+1).item = item;
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q->data.binaryheap.size++;
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// Now we are going to check where it belongs. As long as the parent is
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// bigger, we switch with the parent
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{
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int i, j;
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BinaryHeapNode temp;
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i = q->binaryheap.size;
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i = q->data.binaryheap.size;
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while (i > 1) {
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// Get the parent of this object (divide by 2)
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j = i / 2;
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@ -327,20 +327,20 @@ bool BinaryHeap_Push(Queue* q, void* item, int priority) {
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bool BinaryHeap_Delete(Queue* q, void* item, int priority)
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{
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#ifdef QUEUE_DEBUG
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printf("[BinaryHeap] Deleting an element. There are %d elements left\n", q->binaryheap.size);
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printf("[BinaryHeap] Deleting an element. There are %d elements left\n", q->data.binaryheap.size);
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#endif
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uint i = 0;
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// First, we try to find the item..
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do {
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if (BIN_HEAP_ARR(i+1).item == item) break;
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i++;
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} while (i < q->binaryheap.size);
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} while (i < q->data.binaryheap.size);
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// We did not find the item, so we return false
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if (i == q->binaryheap.size) return false;
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if (i == q->data.binaryheap.size) return false;
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// Now we put the last item over the current item while decreasing the size of the elements
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q->binaryheap.size--;
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BIN_HEAP_ARR(i+1) = BIN_HEAP_ARR(q->binaryheap.size+1);
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q->data.binaryheap.size--;
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BIN_HEAP_ARR(i+1) = BIN_HEAP_ARR(q->data.binaryheap.size+1);
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// Now the only thing we have to do, is resort it..
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// On place i there is the item to be sorted.. let's start there
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@ -354,14 +354,14 @@ bool BinaryHeap_Delete(Queue* q, void* item, int priority)
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for (;;) {
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j = i;
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// Check if we have 2 childs
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if (2*j+1 <= q->binaryheap.size) {
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if (2*j+1 <= q->data.binaryheap.size) {
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// Is this child smaller then the parent?
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if (BIN_HEAP_ARR(j).priority >= BIN_HEAP_ARR(2*j).priority) {i = 2*j; }
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// Yes, we _need_ to use i here, not j, because we want to have the smallest child
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// This way we get that straight away!
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if (BIN_HEAP_ARR(i).priority >= BIN_HEAP_ARR(2*j+1).priority) { i = 2*j+1; }
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// Do we have one child?
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} else if (2*j <= q->binaryheap.size) {
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} else if (2*j <= q->data.binaryheap.size) {
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if (BIN_HEAP_ARR(j).priority >= BIN_HEAP_ARR(2*j).priority) { i = 2*j; }
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}
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@ -382,10 +382,10 @@ bool BinaryHeap_Delete(Queue* q, void* item, int priority)
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void* BinaryHeap_Pop(Queue* q) {
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#ifdef QUEUE_DEBUG
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printf("[BinaryHeap] Popping an element. There are %d elements left\n", q->binaryheap.size);
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printf("[BinaryHeap] Popping an element. There are %d elements left\n", q->data.binaryheap.size);
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#endif
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void* result;
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if (q->binaryheap.size == 0)
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if (q->data.binaryheap.size == 0)
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return NULL;
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// The best item is always on top, so give that as result
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@ -404,13 +404,13 @@ void init_BinaryHeap(Queue* q, uint max_size)
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q->del = BinaryHeap_Delete;
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q->clear = BinaryHeap_Clear;
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q->free = BinaryHeap_Free;
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q->binaryheap.max_size = max_size;
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q->binaryheap.size = 0;
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q->data.binaryheap.max_size = max_size;
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q->data.binaryheap.size = 0;
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// We malloc memory in block of BINARY_HEAP_BLOCKSIZE
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// It autosizes when it runs out of memory
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q->binaryheap.elements = calloc(1, ((max_size - 1) / BINARY_HEAP_BLOCKSIZE) + 1);
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q->binaryheap.elements[0] = malloc(BINARY_HEAP_BLOCKSIZE * sizeof(BinaryHeapNode));
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q->binaryheap.blocks = 1;
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q->data.binaryheap.elements = calloc(1, ((max_size - 1) / BINARY_HEAP_BLOCKSIZE) + 1);
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q->data.binaryheap.elements[0] = malloc(BINARY_HEAP_BLOCKSIZE * sizeof(BinaryHeapNode));
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q->data.binaryheap.blocks = 1;
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q->freeq = false;
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#ifdef QUEUE_DEBUG
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printf("[BinaryHeap] Initial size of elements is %d nodes\n",(1024));
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