X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=rts%2Fwin32%2FAsyncIO.c;h=5dedee0c70bebb8d728fb7d7b5999526c30b95f3;hb=83d563cb9ede0ba792836e529b1e2929db926355;hp=2ff92d96424ce97321f6d7e3a289236ab130f247;hpb=aba81b16e17d8dbd3081d20e062dbc8f9e2f783b;p=ghc-hetmet.git

diff --git a/rts/win32/AsyncIO.c b/rts/win32/AsyncIO.c
index 2ff92d9..5dedee0 100644
--- a/rts/win32/AsyncIO.c
+++ b/rts/win32/AsyncIO.c
@@ -4,12 +4,14 @@
  *
  * (c) sof, 2002-2003.
  */
+
+#if !defined(THREADED_RTS)
+
 #include "Rts.h"
 #include "RtsUtils.h"
 #include <windows.h>
 #include <stdio.h>
 #include "Schedule.h"
-#include "RtsFlags.h"
 #include "Capability.h"
 #include "win32/AsyncIO.h"
 #include "win32/IOManager.h"
@@ -45,8 +47,8 @@ typedef struct CompletedReq {
 #define MAX_REQUESTS 200
 
 static CRITICAL_SECTION queue_lock;
-static HANDLE           completed_req_event;
-static HANDLE           abandon_req_wait;
+static HANDLE           completed_req_event = INVALID_HANDLE_VALUE;
+static HANDLE           abandon_req_wait = INVALID_HANDLE_VALUE;
 static HANDLE           wait_handles[2];
 static CompletedReq     completedTable[MAX_REQUESTS];
 static int              completed_hw;
@@ -171,10 +173,22 @@ startupAsyncIO()
 }
 
 void
-shutdownAsyncIO()
+shutdownAsyncIO(rtsBool wait_threads)
 {
-    CloseHandle(completed_req_event);
-    ShutdownIOManager();
+    ShutdownIOManager(wait_threads);
+    if (completed_req_event != INVALID_HANDLE_VALUE) {
+        CloseHandle(completed_req_event);
+	completed_req_event = INVALID_HANDLE_VALUE;
+    }
+    if (abandon_req_wait != INVALID_HANDLE_VALUE) {
+        CloseHandle(abandon_req_wait);
+	abandon_req_wait = INVALID_HANDLE_VALUE;
+    }
+    if (completed_table_sema != NULL) {
+        CloseHandle(completed_table_sema);
+	completed_table_sema = NULL;
+    }
+    DeleteCriticalSection(&queue_lock);
 }
 
 /*
@@ -260,8 +274,21 @@ start:
 	    unsigned int rID = completedTable[i].reqID;
 	    
 	    prev = NULL;
-	    for(tso = blocked_queue_hd ; tso != END_TSO_QUEUE; prev = tso, tso = tso->link) {
+	    for(tso = blocked_queue_hd ; tso != END_TSO_QUEUE; tso = tso->_link) {
 	
+                if (tso->what_next == ThreadRelocated) {
+                    /* Drop the TSO from blocked_queue */
+                    if (prev) {
+                        setTSOLink(&MainCapability, prev, tso->_link);
+                    } else {
+                        blocked_queue_hd = tso->_link;
+                    }
+                    if (blocked_queue_tl == tso) {
+                        blocked_queue_tl = prev ? prev : END_TSO_QUEUE;
+                    }
+                    continue;
+                }
+
 		switch(tso->why_blocked) {
 		case BlockedOnRead:
 		case BlockedOnWrite:
@@ -275,17 +302,22 @@ start:
 			
 			/* Drop the matched TSO from blocked_queue */
 			if (prev) {
-			    prev->link = tso->link;
+			    setTSOLink(&MainCapability, prev, tso->_link);
 			} else {
-			    blocked_queue_hd = tso->link;
+			    blocked_queue_hd = tso->_link;
 			}
 			if (blocked_queue_tl == tso) {
 			    blocked_queue_tl = prev ? prev : END_TSO_QUEUE;
 			}
 		    
 			/* Terminates the run queue + this inner for-loop. */
-			tso->link = END_TSO_QUEUE;
+			tso->_link = END_TSO_QUEUE;
 			tso->why_blocked = NotBlocked;
+                        // save the StgAsyncIOResult in the
+                        // stg_block_async_info stack frame, because
+                        // the block_info field will be overwritten by
+                        // pushOnRunQueue().
+                        tso->sp[1] = (W_)tso->block_info.async_result;
 			pushOnRunQueue(&MainCapability, tso);
 			break;
 		    }
@@ -296,6 +328,8 @@ start:
 		    }
 		    break;
 		}
+
+                prev = tso;
 	    }
 	    /* Signal that there's completed table slots available */
 	    if ( !ReleaseSemaphore(completed_table_sema, 1, NULL) ) {
@@ -343,3 +377,4 @@ resetAbandonRequestWait( void )
     ResetEvent(abandon_req_wait);
 }
 
+#endif /* !defined(THREADED_RTS) */