| #include <windows.h>
|
|
|
| #include "memory.h"
|
| #include "queue.h"
|
|
|
| void _que_initialize(QUEUE* queue, INT size) {
|
| queue->queue_size = size;
|
| queue->buffer = (WCHAR**)_halloc(size * sizeof(WCHAR*));
|
| queue->space_avail = CreateSemaphoreA(NULL, size, size, NULL);
|
| queue->data_avail = CreateSemaphoreA(NULL, 0, size, NULL);
|
| queue->in_pos = 0;
|
| queue->out_pos = 0;
|
| InitializeCriticalSection(&(queue->mutex));
|
| }
|
|
|
| int _que_push(QUEUE* queue, LPWSTR data, int wait) {
|
| if (WaitForSingleObject(queue->space_avail, 0) != WAIT_OBJECT_0) {
|
| if (wait) WaitForSingleObject(queue->space_avail, INFINITE);
|
| else return 0;
|
| }
|
|
|
| EnterCriticalSection(&(queue->mutex));
|
| WCHAR* realloced_str = 0;
|
| if (data)
|
| {
|
| int memSize = sizeof(WCHAR) * (lstrlenW(data) + 1);
|
| realloced_str = (WCHAR*)_halloc(memSize);
|
| _memcpy(realloced_str, data, memSize);
|
| }
|
| queue->buffer[queue->in_pos] = realloced_str;
|
| queue->in_pos = (queue->in_pos + 1) % queue->queue_size;
|
| LeaveCriticalSection(&queue->mutex);
|
| ReleaseSemaphore(queue->data_avail, 1, NULL);
|
|
|
| return 1;
|
| }
|
|
|
| LPWSTR _que_pop(QUEUE* queue, int wait, int* dwError) {
|
| *dwError = 0;
|
|
|
| if (WaitForSingleObject(queue->data_avail, 0) != WAIT_OBJECT_0) {
|
| if (wait) WaitForSingleObject(queue->data_avail, INFINITE);
|
| else {
|
| *dwError = QUEUE_ERR_TIMEOUT;
|
| return 0;
|
| }
|
| }
|
|
|
| EnterCriticalSection(&queue->mutex);
|
| LPWSTR retval = queue->buffer[queue->out_pos];
|
| queue->out_pos = (queue->out_pos + 1) % queue->queue_size;
|
| LeaveCriticalSection(&queue->mutex);
|
| ReleaseSemaphore(queue->space_avail, 1, NULL);
|
| return retval;
|
| } |
