/* -----------------------------------------------------------------------------
- * $Id: Select.c,v 1.24 2003/02/21 05:34:16 sof Exp $
+ * $Id: Select.c,v 1.25 2003/02/22 04:51:57 sof Exp $
*
* (c) The GHC Team 1995-2002
*
*
* ---------------------------------------------------------------------------*/
+
/* we're outside the realms of POSIX here... */
/* #include "PosixSource.h" */
#include "Rts.h"
+#ifndef mingw32_TARGET_OS
+/* to the end */
+
#include "Schedule.h"
#include "RtsUtils.h"
#include "RtsFlags.h"
-#include "Itimer.h"
+#include "Timer.h"
#include "Signals.h"
#include "Capability.h"
# include <sys/time.h>
# endif
-# ifdef mingw32_TARGET_OS
-# include <windows.h>
-# include "win32/AsyncIO.h"
-# endif
-
#include <errno.h>
#include <string.h>
#ifdef RTS_SUPPORTS_THREADS
static rtsBool isWorkerBlockedInAwaitEvent = rtsFalse;
static rtsBool workerWakeupPending = rtsFalse;
-#ifndef mingw32_TARGET_OS
static int workerWakeupPipe[2];
static rtsBool workerWakeupInited = rtsFalse;
#endif
-#endif
/* There's a clever trick here to avoid problems when the time wraps
* around. Since our maximum delay is smaller than 31 bits of ticks
StgTSO *tso, *prev, *next;
rtsBool ready;
fd_set rfd,wfd;
-#ifndef mingw32_TARGET_OS
int numFound;
int maxfd = -1;
-#endif
rtsBool select_succeeded = rtsTrue;
rtsBool unblock_all = rtsFalse;
struct timeval tv;
min = 0x7ffffff;
}
-#ifndef mingw32_TARGET_OS
/*
* Collect all of the fd's that we're interested in
*/
barf("select failed");
}
}
-#else /* on mingwin */
-#ifdef RTS_SUPPORTS_THREADS
- isWorkerBlockedInAwaitEvent = rtsTrue;
-#endif
- RELEASE_LOCK(&sched_mutex);
- while (1) {
- if (!awaitRequests(wait)) {
- Sleep(0); /* don't busy wait */
- }
-#endif /* mingw32_TARGET_OS */
ACQUIRE_LOCK(&sched_mutex);
#ifdef RTS_SUPPORTS_THREADS
isWorkerBlockedInAwaitEvent = rtsFalse;
#endif
-#ifndef mingw32_TARGET_OS
/* We got a signal; could be one of ours. If so, we need
* to start up the signal handler straight away, otherwise
* we could block for a long time before the signal is
ACQUIRE_LOCK(&sched_mutex);
return; /* still hold the lock */
}
-#endif
/* we were interrupted, return to the scheduler immediately.
*/
}
}
-#if defined(RTS_SUPPORTS_THREADS) && !defined(mingw32_TARGET_OS)
+#if defined(RTS_SUPPORTS_THREADS)
// if we were woken up by wakeBlockedWorkerThread,
// read the dummy byte from the pipe
if(select_succeeded && FD_ISSET(workerWakeupPipe[0], &rfd)) {
* wake it.
* Must be called with sched_mutex held.
*/
-
void
wakeBlockedWorkerThread()
{
-#ifndef mingw32_TARGET_OS
if(isWorkerBlockedInAwaitEvent && !workerWakeupPending) {
unsigned char dummy = 42; // Any value will do here
write(workerWakeupPipe[1],&dummy,1);
workerWakeupPending = rtsTrue;
}
-#else
- // The Win32 implementation currently uses a polling loop,
- // so there is no need to explicitly wake it
-#endif
}
-
#endif
+
+#endif /* !mingw_TARGET_OS */