aboutsummaryrefslogtreecommitdiff
path: root/qemu-coroutine-io.c
diff options
context:
space:
mode:
authorMichael R. Hines <mrhines@us.ibm.com>2013-06-25 21:35:29 -0400
committerJuan Quintela <quintela@redhat.com>2013-06-27 02:38:36 +0200
commit9f05d0c3a4f9e8fcb13ed09cc350af45a627809a (patch)
tree285c6a7eca160d837dde3d8be7e572cac2b3fd31 /qemu-coroutine-io.c
parent2b0ce0797d6bfb13ebefe010da86abced0b7a9b3 (diff)
downloadqemu-arm-9f05d0c3a4f9e8fcb13ed09cc350af45a627809a.tar.gz
rdma: export yield_until_fd_readable()
The RDMA event channel can be made non-blocking just like a TCP socket. Exporting this function allows us to yield so that the QEMU monitor remains available. Reviewed-by: Juan Quintela <quintela@redhat.com> Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Chegu Vinod <chegu_vinod@hp.com> Tested-by: Chegu Vinod <chegu_vinod@hp.com> Tested-by: Michael R. Hines <mrhines@us.ibm.com> Signed-off-by: Michael R. Hines <mrhines@us.ibm.com> Signed-off-by: Juan Quintela <quintela@redhat.com>
Diffstat (limited to 'qemu-coroutine-io.c')
-rw-r--r--qemu-coroutine-io.c23
1 files changed, 23 insertions, 0 deletions
diff --git a/qemu-coroutine-io.c b/qemu-coroutine-io.c
index e8ad1a4011..c4df35a640 100644
--- a/qemu-coroutine-io.c
+++ b/qemu-coroutine-io.c
@@ -63,3 +63,26 @@ qemu_co_send_recv(int sockfd, void *buf, size_t bytes, bool do_send)
struct iovec iov = { .iov_base = buf, .iov_len = bytes };
return qemu_co_sendv_recvv(sockfd, &iov, 1, 0, bytes, do_send);
}
+
+typedef struct {
+ Coroutine *co;
+ int fd;
+} FDYieldUntilData;
+
+static void fd_coroutine_enter(void *opaque)
+{
+ FDYieldUntilData *data = opaque;
+ qemu_set_fd_handler(data->fd, NULL, NULL, NULL);
+ qemu_coroutine_enter(data->co, NULL);
+}
+
+void coroutine_fn yield_until_fd_readable(int fd)
+{
+ FDYieldUntilData data;
+
+ assert(qemu_in_coroutine());
+ data.co = qemu_coroutine_self();
+ data.fd = fd;
+ qemu_set_fd_handler(fd, fd_coroutine_enter, NULL, &data);
+ qemu_coroutine_yield();
+}