File size: 1,281 Bytes
21caab1 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 | #include <windows.h>
#include "memory.h"
#include "queue.h"
static HANDLE space_avail;
static HANDLE data_avail;
static CRITICAL_SECTION mutex;
static INT queueSize = 0;
static LPWSTR* buffer = 0;
static long in_pos = 0, out_pos = 0;
void _que_initialize(INT size) {
queueSize = size;
buffer = (WCHAR**)_halloc(size * sizeof(WCHAR*));
space_avail = CreateSemaphoreA(NULL, queueSize, queueSize, NULL);
data_avail = CreateSemaphoreA(NULL, 0, queueSize, NULL);
InitializeCriticalSection(&mutex);
}
void _que_push(LPWSTR data) {
WCHAR* data_newmem = 0;
if (data)
{
data_newmem = (WCHAR*)_halloc(sizeof(WCHAR*) * (lstrlenW(data) + 1));
lstrcpyW(data_newmem, data);
}
WaitForSingleObject(space_avail, INFINITE);
EnterCriticalSection(&mutex);
buffer[in_pos] = data_newmem;
in_pos = (in_pos + 1) % queueSize;
LeaveCriticalSection(&mutex);
ReleaseSemaphore(data_avail, 1, NULL);
}
LPWSTR _que_pop() {
WaitForSingleObject(data_avail, INFINITE);
EnterCriticalSection(&mutex);
LPWSTR retval = buffer[out_pos];
out_pos = (out_pos + 1) % queueSize;
LeaveCriticalSection(&mutex);
ReleaseSemaphore(space_avail, 1, NULL);
return retval;
} |