Changeset 37675 in vbox for trunk/src/recompiler/cutils.c

Timestamp:

Jun 29, 2011 7:07:14 AM (13 years ago)

Author:

vboxsync

Message:

rem: Synced with v0.12.5.

File:

• trunk/src/recompiler/cutils.c (modified) (3 diffs)

trunk/src/recompiler/cutils.c

@@ -26 +26 @@
 
 #ifdef VBOX
-#include "osdep.h"
+# include "osdep.h"
 
 
@@ -612 +612 @@
 
 #ifndef VBOX
+/*
+ * Make sure data goes on disk, but if possible do not bother to
+ * write out the inode just for timestamp updates.
+ *
+ * Unfortunately even in 2009 many operating systems do not support
+ * fdatasync and have to fall back to fsync.
+ */
+int qemu_fdatasync(int fd)
+{
+#ifdef CONFIG_FDATASYNC
+    return fdatasync(fd);
+#else
+    return fsync(fd);
+#endif
+}
+
 /* io vectors */
 
@@ -646 +662 @@
     qiov->size += len;
     ++qiov->niov;
+}
+
+/*
+ * Copies iovecs from src to the end dst until src is completely copied or the
+ * total size of the copied iovec reaches size. The size of the last copied
+ * iovec is changed in order to fit the specified total size if it isn't a
+ * perfect fit already.
+ */
+void qemu_iovec_concat(QEMUIOVector *dst, QEMUIOVector *src, size_t size)
+{
+    int i;
+    size_t done;
+
+    assert(dst->nalloc != -1);
+
+    done = 0;
+    for (i = 0; (i < src->niov) && (done != size); i++) {
+        if (done + src->iov[i].iov_len > size) {
+            qemu_iovec_add(dst, src->iov[i].iov_base, size - done);
+            break;
+        } else {
+            qemu_iovec_add(dst, src->iov[i].iov_base, src->iov[i].iov_len);
+        }
+        done += src->iov[i].iov_len;
+    }
 }