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authorJosé Pekkarinen <jose.pekkarinen@nokia.com>2016-05-18 13:18:31 +0300
committerJosé Pekkarinen <jose.pekkarinen@nokia.com>2016-05-18 13:42:15 +0300
commit437fd90c0250dee670290f9b714253671a990160 (patch)
treeb871786c360704244a07411c69fb58da9ead4a06 /qemu/qemu-coroutine-io.c
parent5bbd6fe9b8bab2a93e548c5a53b032d1939eec05 (diff)
These changes are the raw update to qemu-2.6.
Collission happened in the following patches: migration: do cleanup operation after completion(738df5b9) Bug fix.(1750c932f86) kvmclock: add a new function to update env->tsc.(b52baab2) The code provided by the patches was already in the upstreamed version. Change-Id: I3cc11841a6a76ae20887b2e245710199e1ea7f9a Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>
Diffstat (limited to 'qemu/qemu-coroutine-io.c')
-rw-r--r--qemu/qemu-coroutine-io.c91
1 files changed, 0 insertions, 91 deletions
diff --git a/qemu/qemu-coroutine-io.c b/qemu/qemu-coroutine-io.c
deleted file mode 100644
index 28dc7351a..000000000
--- a/qemu/qemu-coroutine-io.c
+++ /dev/null
@@ -1,91 +0,0 @@
-/*
- * Coroutine-aware I/O functions
- *
- * Copyright (C) 2009-2010 Nippon Telegraph and Telephone Corporation.
- * Copyright (c) 2011, Red Hat, Inc.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- */
-#include "qemu-common.h"
-#include "qemu/sockets.h"
-#include "block/coroutine.h"
-#include "qemu/iov.h"
-#include "qemu/main-loop.h"
-
-ssize_t coroutine_fn
-qemu_co_sendv_recvv(int sockfd, struct iovec *iov, unsigned iov_cnt,
- size_t offset, size_t bytes, bool do_send)
-{
- size_t done = 0;
- ssize_t ret;
- int err;
- while (done < bytes) {
- ret = iov_send_recv(sockfd, iov, iov_cnt,
- offset + done, bytes - done, do_send);
- if (ret > 0) {
- done += ret;
- } else if (ret < 0) {
- err = socket_error();
- if (err == EAGAIN || err == EWOULDBLOCK) {
- qemu_coroutine_yield();
- } else if (done == 0) {
- return -err;
- } else {
- break;
- }
- } else if (ret == 0 && !do_send) {
- /* write (send) should never return 0.
- * read (recv) returns 0 for end-of-file (-data).
- * In both cases there's little point retrying,
- * but we do for write anyway, just in case */
- break;
- }
- }
- return done;
-}
-
-ssize_t coroutine_fn
-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();
-}