/* Signal dispatching thread */
static DWORD WINAPI
pg_signal_dispatch_thread(LPVOID param)
{
HANDLE pipe = (HANDLE) param;
BYTE sigNum;
DWORD bytes;
if (!ReadFile(pipe, &sigNum, 1, &bytes, NULL))
{
/* Client died before sending */
CloseHandle(pipe);
return 0;
}
if (bytes != 1)
{
/* Received <bytes> bytes over signal pipe (should be 1) */
CloseHandle(pipe);
return 0;
}
WriteFile(pipe, &sigNum, 1, &bytes, NULL); /* Don't care if it works or
* not.. */
FlushFileBuffers(pipe);
DisconnectNamedPipe(pipe);
CloseHandle(pipe);
pg_queue_signal(sigNum);
return 0;
}
/* Console control handler will execute on a thread created
by the OS at the time of invocation */
static BOOL WINAPI
pg_console_handler(DWORD dwCtrlType)
{
if (dwCtrlType == CTRL_C_EVENT ||
dwCtrlType == CTRL_BREAK_EVENT ||
dwCtrlType == CTRL_CLOSE_EVENT ||
dwCtrlType == CTRL_SHUTDOWN_EVENT)
{
pg_queue_signal(SIGINT);
return TRUE;
}
return FALSE;
}
/* Timer management thread */
static DWORD WINAPI
pg_timer_thread(LPVOID param)
{
DWORD waittime;
Assert(param == NULL);
waittime = INFINITE;
for (;;)
{
int r;
r = WaitForSingleObjectEx(timerCommArea.event, waittime, FALSE);
if (r == WAIT_OBJECT_0)
{
/* Event signalled from main thread, change the timer */
EnterCriticalSection(&timerCommArea.crit_sec);
if (timerCommArea.value.it_value.tv_sec == 0 &&
timerCommArea.value.it_value.tv_usec == 0)
waittime = INFINITE; /* Cancel the interrupt */
else
{
/* WaitForSingleObjectEx() uses milliseconds, round up */
waittime = (timerCommArea.value.it_value.tv_usec + 999) / 1000 +
timerCommArea.value.it_value.tv_sec * 1000;
}
ResetEvent(timerCommArea.event);
LeaveCriticalSection(&timerCommArea.crit_sec);
}
else if (r == WAIT_TIMEOUT)
{
/* Timeout expired, signal SIGALRM and turn it off */
pg_queue_signal(SIGALRM);
waittime = INFINITE;
}
else
{
/* Should never happen */
Assert(false);
}
}
return 0;
}