From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:49706) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Yi4GT-0005po-FJ for qemu-devel@nongnu.org; Tue, 14 Apr 2015 13:04:46 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Yi4GN-0002F6-3l for qemu-devel@nongnu.org; Tue, 14 Apr 2015 13:04:45 -0400 Received: from mx1.redhat.com ([209.132.183.28]:57576) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Yi4GM-0002F2-Va for qemu-devel@nongnu.org; Tue, 14 Apr 2015 13:04:39 -0400 From: "Dr. David Alan Gilbert (git)" Date: Tue, 14 Apr 2015 18:03:35 +0100 Message-Id: <1429031053-4454-10-git-send-email-dgilbert@redhat.com> In-Reply-To: <1429031053-4454-1-git-send-email-dgilbert@redhat.com> References: <1429031053-4454-1-git-send-email-dgilbert@redhat.com> Subject: [Qemu-devel] [PATCH v6 09/47] Add wrapper for setting blocking status on a QEMUFile List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: aarcange@redhat.com, yamahata@private.email.ne.jp, quintela@redhat.com, amit.shah@redhat.com, pbonzini@redhat.com, david@gibson.dropbear.id.au, yayanghy@cn.fujitsu.com From: "Dr. David Alan Gilbert" Add a wrapper to change the blocking status on a QEMUFile rather than having to use qemu_set_block(qemu_get_fd(f)); it seems best to avoid exposing the fd since not all QEMUFile's really have one. With this wrapper we could move the implementation down to be different on different transports. Signed-off-by: Dr. David Alan Gilbert --- include/migration/qemu-file.h | 1 + migration/qemu-file.c | 15 +++++++++++++++ 2 files changed, 16 insertions(+) diff --git a/include/migration/qemu-file.h b/include/migration/qemu-file.h index 4cac58f..c14555d 100644 --- a/include/migration/qemu-file.h +++ b/include/migration/qemu-file.h @@ -190,6 +190,7 @@ int qemu_file_get_error(QEMUFile *f); void qemu_file_set_error(QEMUFile *f, int ret); int qemu_file_shutdown(QEMUFile *f); void qemu_fflush(QEMUFile *f); +void qemu_file_change_blocking(QEMUFile *f, bool block); static inline void qemu_put_be64s(QEMUFile *f, const uint64_t *pv) { diff --git a/migration/qemu-file.c b/migration/qemu-file.c index ec3a598..d84830f 100644 --- a/migration/qemu-file.c +++ b/migration/qemu-file.c @@ -609,3 +609,18 @@ int qemu_get_counted_string(QEMUFile *f, char buf[256]) return res != len; } +/* + * Change the blocking state of the QEMUFile. + * Note: On some transports the OS only keeps a single blocking state for + * both directions, and thus changing the blocking on the main + * QEMUFile can also affect the return path. + */ +void qemu_file_change_blocking(QEMUFile *f, bool block) +{ + if (block) { + qemu_set_block(qemu_get_fd(f)); + } else { + qemu_set_nonblock(qemu_get_fd(f)); + } +} + -- 2.1.0