X-Git-Url: https://repo.jachan.dev/qemu.git/blobdiff_plain/a398dea34c62b238e714bb4c3a968b4ca11e256b..363285d4b39cbd80427b4fb0a71266fef17290bf:/aio-win32.c

diff --git a/aio-win32.c b/aio-win32.c
index 5e37b42530..1ec434a83c 100644
--- a/aio-win32.c
+++ b/aio-win32.c
@@ -130,11 +130,12 @@ static bool aio_dispatch_handlers(AioContext *ctx, HANDLE event)
     return progress;
 }
 
-static bool aio_dispatch(AioContext *ctx)
+bool aio_dispatch(AioContext *ctx)
 {
     bool progress;
 
-    progress = aio_dispatch_handlers(ctx, INVALID_HANDLE_VALUE);
+    progress = aio_bh_poll(ctx);
+    progress |= aio_dispatch_handlers(ctx, INVALID_HANDLE_VALUE);
     progress |= timerlistgroup_run_timers(&ctx->tlg);
     return progress;
 }
@@ -143,29 +144,12 @@ bool aio_poll(AioContext *ctx, bool blocking)
 {
     AioHandler *node;
     HANDLE events[MAXIMUM_WAIT_OBJECTS + 1];
-    bool progress;
+    bool progress, first;
     int count;
     int timeout;
 
     progress = false;
 
-    /*
-     * If there are callbacks left that have been queued, we need to call then.
-     * Do not call select in this case, because it is possible that the caller
-     * does not need a complete flush (as is the case for aio_poll loops).
-     */
-    if (aio_bh_poll(ctx)) {
-        blocking = false;
-        progress = true;
-    }
-
-    /* Dispatch any pending callbacks from the GSource.  */
-    progress |= aio_dispatch(ctx);
-
-    if (progress && !blocking) {
-        return true;
-    }
-
     ctx->walking_handlers++;
 
     /* fill fd sets */
@@ -177,6 +161,7 @@ bool aio_poll(AioContext *ctx, bool blocking)
     }
 
     ctx->walking_handlers--;
+    first = true;
 
     /* wait until next event */
     while (count > 0) {
@@ -186,6 +171,11 @@ bool aio_poll(AioContext *ctx, bool blocking)
             ? qemu_timeout_ns_to_ms(aio_compute_timeout(ctx)) : 0;
         ret = WaitForMultipleObjects(count, events, FALSE, timeout);
 
+        if (first && aio_bh_poll(ctx)) {
+            progress = true;
+        }
+        first = false;
+
         /* if we have any signaled events, dispatch event */
         if ((DWORD) (ret - WAIT_OBJECT_0) >= count) {
             break;
@@ -199,14 +189,7 @@ bool aio_poll(AioContext *ctx, bool blocking)
         events[ret - WAIT_OBJECT_0] = events[--count];
     }
 
-    if (blocking) {
-        /* Run the timers a second time. We do this because otherwise aio_wait
-         * will not note progress - and will stop a drain early - if we have
-         * a timer that was not ready to run entering g_poll but is ready
-         * after g_poll. This will only do anything if a timer has expired.
-         */
-        progress |= timerlistgroup_run_timers(&ctx->tlg);
-    }
+    progress |= timerlistgroup_run_timers(&ctx->tlg);
 
     return progress;
 }