[Qemu-devel] [PATCH 16/25] aio: clean up now-unused functions

[Paolo Bonzini <pbonzini@redhat.com>]

Some cleanups can now be made, now that the main loop does not anymore need
hooks into the bottom half code.

Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
 async.c       | 23 +++++++----------------
 oslib-posix.c | 31 -------------------------------
 qemu-aio.h    |  1 -
 qemu-common.h |  1 -
 4 file modificati, 7 inserzioni(+), 49 rimozioni(-)

diff --git a/async.c b/async.c
index 564526f..04f9dcb 100644
--- a/async.c
+++ b/async.c
@@ -117,16 +117,20 @@ void qemu_bh_delete(QEMUBH *bh)
     bh->deleted = 1;
 }
 
-void aio_bh_update_timeout(AioContext *ctx, uint32_t *timeout)
+static gboolean
+aio_ctx_prepare(GSource *source, gint    *timeout)
 {
+    AioContext *ctx = (AioContext *) source;
     QEMUBH *bh;
+    bool scheduled = false;
 
     for (bh = ctx->first_bh; bh; bh = bh->next) {
         if (!bh->deleted && bh->scheduled) {
+            scheduled = true;
             if (bh->idle) {
                 /* idle bottom halves will be polled at least
                  * every 10ms */
-                *timeout = MIN(10, *timeout);
+                *timeout = 10;
             } else {
                 /* non-idle bottom halves will be executed
                  * immediately */
@@ -135,21 +139,8 @@ void aio_bh_update_timeout(AioContext *ctx, uint32_t *timeout)
             }
         }
     }
-}
 
-static gboolean
-aio_ctx_prepare(GSource *source, gint    *timeout)
-{
-    AioContext *ctx = (AioContext *) source;
-    uint32_t wait = -1;
-    aio_bh_update_timeout(ctx, &wait);
-
-    if (wait != -1) {
-        *timeout = MIN(*timeout, wait);
-        return wait == 0;
-    }
-
-    return false;
+    return scheduled;
 }
 
 static gboolean
diff --git a/oslib-posix.c b/oslib-posix.c
index dbeb627..9db9c3d 100644
--- a/oslib-posix.c
+++ b/oslib-posix.c
@@ -61,9 +61,6 @@ static int running_on_valgrind = -1;
 #ifdef CONFIG_LINUX
 #include <sys/syscall.h>
 #endif
-#ifdef CONFIG_EVENTFD
-#include <sys/eventfd.h>
-#endif
 
 int qemu_get_thread_id(void)
 {
@@ -183,34 +180,6 @@ int qemu_pipe(int pipefd[2])
     return ret;
 }
 
-/*
- * Creates an eventfd that looks like a pipe and has EFD_CLOEXEC set.
- */
-int qemu_eventfd(int fds[2])
-{
-#ifdef CONFIG_EVENTFD
-    int ret;
-
-    ret = eventfd(0, 0);
-    if (ret >= 0) {
-        fds[0] = ret;
-        fds[1] = dup(ret);
-        if (fds[1] == -1) {
-            close(ret);
-            return -1;
-        }
-        qemu_set_cloexec(ret);
-        qemu_set_cloexec(fds[1]);
-        return 0;
-    }
-    if (errno != ENOSYS) {
-        return -1;
-    }
-#endif
-
-    return qemu_pipe(fds);
-}
-
 int qemu_utimens(const char *path, const struct timespec *times)
 {
     struct timeval tv[2], tv_now;
diff --git a/qemu-aio.h b/qemu-aio.h
index 2354617..1b7eb6e 100644
--- a/qemu-aio.h
+++ b/qemu-aio.h
@@ -125,7 +125,6 @@ void aio_notify(AioContext *ctx);
  * These are internal functions used by the QEMU main loop.
  */
 int aio_bh_poll(AioContext *ctx);
-void aio_bh_update_timeout(AioContext *ctx, uint32_t *timeout);
 
 /**
  * qemu_bh_schedule: Schedule a bottom half.
diff --git a/qemu-common.h b/qemu-common.h
index 9e92eb0..9b3ee95 100644
--- a/qemu-common.h
+++ b/qemu-common.h
@@ -219,7 +219,6 @@ ssize_t qemu_recv_full(int fd, void *buf, size_t count, int flags)
     QEMU_WARN_UNUSED_RESULT;
 
 #ifndef _WIN32
-int qemu_eventfd(int pipefd[2]);
 int qemu_pipe(int pipefd[2]);
 #endif
 
-- 
1.7.12.1