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Live migration for Win32 (Hervé Poussineau)

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This patch fixes migration so that it works on Win32.  This requires using
socket specific calls since sockets cannot be treated like file descriptors
on win32.

Signed-off-by: Hervé Poussineau <hpoussin@reactos.org>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>



git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5525 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
aliguori 2008-10-24 21:55:17 +00:00
parent 17e909738d
commit c1d3666532
3 changed files with 24 additions and 24 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
hw/hw.h
View File

@ -34,7 +34,7 @@ QEMUFile *qemu_fopen_ops(void *opaque, QEMUFilePutBufferFunc *put_buffer,
QEMUFileCloseFunc *close,
QEMUFileRateLimit *rate_limit);
QEMUFile *qemu_fopen(const char *filename, const char *mode);
QEMUFile *qemu_fopen_fd(int fd);
QEMUFile *qemu_fopen_socket(int fd);
void qemu_fflush(QEMUFile *f);
int qemu_fclose(QEMUFile *f);
void qemu_put_buffer(QEMUFile *f, const uint8_t *buf, int size);

22
migration-tcp.c
View File

@ -85,10 +85,10 @@ static ssize_t fd_put_buffer(void *opaque, const void *data, size_t size)
do {
ret = send(s->fd, data, size, 0);
} while (ret == -1 && errno == EINTR);
} while (ret == -1 && (socket_error() == EINTR || socket_error() == EWOULDBLOCK));
if (ret == -1)
ret = -errno;
ret = -socket_error();
if (ret == -EAGAIN)
qemu_set_fd_handler2(s->fd, NULL, NULL, fd_put_notify, s);
@ -123,7 +123,7 @@ static void fd_wait_for_unfreeze(void *opaque)
FD_SET(s->fd, &wfds);
ret = select(s->fd + 1, NULL, &wfds, NULL, NULL);
} while (ret == -1 && errno == EINTR);
} while (ret == -1 && socket_error() == EINTR);
}
static void fd_put_ready(void *opaque)
@ -178,7 +178,7 @@ static void tcp_wait_for_connect(void *opaque)
dprintf("connect completed\n");
do {
ret = getsockopt(s->fd, SOL_SOCKET, SO_ERROR, &val, &valsize);
} while (ret == -1 && errno == EINTR);
} while (ret == -1 && socket_error() == EINTR);
if (ret < 0) {
tcp_error(s);
@ -273,13 +273,13 @@ MigrationState *tcp_start_outgoing_migration(const char *host_port,
do {
ret = connect(s->fd, (struct sockaddr *)&addr, sizeof(addr));
if (ret == -1)
ret = -errno;
ret = -socket_error();
if (ret == -EINPROGRESS)
if (ret == -EINPROGRESS || ret == -EWOULDBLOCK)
qemu_set_fd_handler2(s->fd, NULL, NULL, tcp_wait_for_connect, s);
} while (ret == -EINTR);
if (ret < 0 && ret != -EINPROGRESS) {
if (ret < 0 && ret != -EINPROGRESS && ret != -EWOULDBLOCK) {
dprintf("connect failed\n");
close(s->fd);
qemu_free(s);
@ -300,7 +300,7 @@ static void tcp_accept_incoming_migration(void *opaque)
do {
c = accept(s, (struct sockaddr *)&addr, &addrlen);
} while (c == -1 && errno == EINTR);
} while (c == -1 && socket_error() == EINTR);
dprintf("accepted migration\n");
@ -309,7 +309,7 @@ static void tcp_accept_incoming_migration(void *opaque)
return;
}
f = qemu_fopen_fd(c);
f = qemu_fopen_socket(c);
if (f == NULL) {
fprintf(stderr, "could not qemu_fopen socket\n");
goto out;
@ -349,7 +349,7 @@ int tcp_start_incoming_migration(const char *host_port)
s = socket(PF_INET, SOCK_STREAM, 0);
if (s == -1)
return -errno;
return -socket_error();
val = 1;
setsockopt(s, SOL_SOCKET, SO_REUSEADDR, (const char *)&val, sizeof(val));
@ -367,5 +367,5 @@ int tcp_start_incoming_migration(const char *host_port)
err:
close(s);
return -errno;
return -socket_error();
}

24
vl.c
View File

@ -6252,43 +6252,43 @@ struct QEMUFile {
int has_error;
};
typedef struct QEMUFileFD
typedef struct QEMUFileSocket
{
int fd;
QEMUFile *file;
} QEMUFileFD;
} QEMUFileSocket;
static int fd_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size)
static int socket_get_buffer(void *opaque, uint8_t *buf, int64_t pos, int size)
{
QEMUFileFD *s = opaque;
QEMUFileSocket *s = opaque;
ssize_t len;
do {
len = read(s->fd, buf, size);
} while (len == -1 && errno == EINTR);
len = recv(s->fd, buf, size, 0);
} while (len == -1 && socket_error() == EINTR);
if (len == -1)
len = -errno;
len = -socket_error();
return len;
}
static int fd_close(void *opaque)
static int socket_close(void *opaque)
{
QEMUFileFD *s = opaque;
QEMUFileSocket *s = opaque;
qemu_free(s);
return 0;
}
QEMUFile *qemu_fopen_fd(int fd)
QEMUFile *qemu_fopen_socket(int fd)
{
QEMUFileFD *s = qemu_mallocz(sizeof(QEMUFileFD));
QEMUFileSocket *s = qemu_mallocz(sizeof(QEMUFileSocket));
if (s == NULL)
return NULL;
s->fd = fd;
s->file = qemu_fopen_ops(s, NULL, fd_get_buffer, fd_close, NULL);
s->file = qemu_fopen_ops(s, NULL, socket_get_buffer, socket_close, NULL);
return s->file;
}