Reviewed-by: Orit Wasserman <owass...@redhat.com>
Signed-off-by: Paolo Bonzini <pbonz...@redhat.com>
---
buffered_file.c | 13 ++++---
qemu-file.h | 16 +++++----
savevm.c | 108 +++++++++++++++++++++++++++++++-------------------------
3 file modificati, 79 inserzioni(+), 58 rimozioni(-)
diff --git a/buffered_file.c b/buffered_file.c
index ed92df1..a5c0b12 100644
--- a/buffered_file.c
+++ b/buffered_file.c
@@ -234,6 +234,14 @@ static void buffered_rate_tick(void *opaque)
buffered_put_buffer(s, NULL, 0, 0);
}
+static const QEMUFileOps buffered_file_ops = {
+ .put_buffer = buffered_put_buffer,
+ .close = buffered_close,
+ .rate_limit = buffered_rate_limit,
+ .get_rate_limit = buffered_get_rate_limit,
+ .set_rate_limit = buffered_set_rate_limit,
+};
+
QEMUFile *qemu_fopen_ops_buffered(MigrationState *migration_state)
{
QEMUFileBuffered *s;
@@ -243,10 +251,7 @@ QEMUFile *qemu_fopen_ops_buffered(MigrationState
*migration_state)
s->migration_state = migration_state;
s->xfer_limit = migration_state->bandwidth_limit / 10;
- s->file = qemu_fopen_ops(s, buffered_put_buffer, NULL,
- buffered_close, buffered_rate_limit,
- buffered_set_rate_limit,
- buffered_get_rate_limit);
+ s->file = qemu_fopen_ops(s, &buffered_file_ops);
s->timer = qemu_new_timer_ms(rt_clock, buffered_rate_tick, s);
diff --git a/qemu-file.h b/qemu-file.h
index 9c8985b..c89e8e0 100644
--- a/qemu-file.h
+++ b/qemu-file.h
@@ -59,12 +59,16 @@ typedef int (QEMUFileRateLimit)(void *opaque);
typedef int64_t (QEMUFileSetRateLimit)(void *opaque, int64_t new_rate);
typedef int64_t (QEMUFileGetRateLimit)(void *opaque);
-QEMUFile *qemu_fopen_ops(void *opaque, QEMUFilePutBufferFunc *put_buffer,
- QEMUFileGetBufferFunc *get_buffer,
- QEMUFileCloseFunc *close,
- QEMUFileRateLimit *rate_limit,
- QEMUFileSetRateLimit *set_rate_limit,
- QEMUFileGetRateLimit *get_rate_limit);
+typedef struct QEMUFileOps {
+ QEMUFilePutBufferFunc *put_buffer;
+ QEMUFileGetBufferFunc *get_buffer;
+ QEMUFileCloseFunc *close;
+ QEMUFileRateLimit *rate_limit;
+ QEMUFileSetRateLimit *set_rate_limit;
+ QEMUFileGetRateLimit *get_rate_limit;
+} QEMUFileOps;
+
+QEMUFile *qemu_fopen_ops(void *opaque, const QEMUFileOps *ops);
QEMUFile *qemu_fopen(const char *filename, const char *mode);
QEMUFile *qemu_fdopen(int fd, const char *mode);
QEMUFile *qemu_fopen_socket(int fd);
diff --git a/savevm.c b/savevm.c
index cfcf918..a4158ec 100644
--- a/savevm.c
+++ b/savevm.c
@@ -163,12 +163,7 @@ void qemu_announce_self(void)
#define IO_BUF_SIZE 32768
struct QEMUFile {
- QEMUFilePutBufferFunc *put_buffer;
- QEMUFileGetBufferFunc *get_buffer;
- QEMUFileCloseFunc *close;
- QEMUFileRateLimit *rate_limit;
- QEMUFileSetRateLimit *set_rate_limit;
- QEMUFileGetRateLimit *get_rate_limit;
+ const QEMUFileOps *ops;
void *opaque;
int is_write;
@@ -257,6 +252,16 @@ static int stdio_fclose(void *opaque)
return ret;
}
+static const QEMUFileOps stdio_pipe_read_ops = {
+ .get_buffer = stdio_get_buffer,
+ .close = stdio_pclose
+};
+
+static const QEMUFileOps stdio_pipe_write_ops = {
+ .put_buffer = stdio_put_buffer,
+ .close = stdio_pclose
+};
+
QEMUFile *qemu_popen(FILE *stdio_file, const char *mode)
{
QEMUFileStdio *s;
@@ -271,11 +276,9 @@ QEMUFile *qemu_popen(FILE *stdio_file, const char *mode)
s->stdio_file = stdio_file;
if(mode[0] == 'r') {
- s->file = qemu_fopen_ops(s, NULL, stdio_get_buffer, stdio_pclose,
- NULL, NULL, NULL);
+ s->file = qemu_fopen_ops(s, &stdio_pipe_read_ops);
} else {
- s->file = qemu_fopen_ops(s, stdio_put_buffer, NULL, stdio_pclose,
- NULL, NULL, NULL);
+ s->file = qemu_fopen_ops(s, &stdio_pipe_write_ops);
}
return s->file;
}
@@ -303,6 +306,16 @@ int qemu_stdio_fd(QEMUFile *f)
return fd;
}
+static const QEMUFileOps stdio_file_read_ops = {
+ .get_buffer = stdio_get_buffer,
+ .close = stdio_fclose
+};
+
+static const QEMUFileOps stdio_file_write_ops = {
+ .put_buffer = stdio_put_buffer,
+ .close = stdio_fclose
+};
+
QEMUFile *qemu_fdopen(int fd, const char *mode)
{
QEMUFileStdio *s;
@@ -320,11 +333,9 @@ QEMUFile *qemu_fdopen(int fd, const char *mode)
goto fail;
if(mode[0] == 'r') {
- s->file = qemu_fopen_ops(s, NULL, stdio_get_buffer, stdio_fclose,
- NULL, NULL, NULL);
+ s->file = qemu_fopen_ops(s, &stdio_file_read_ops);
} else {
- s->file = qemu_fopen_ops(s, stdio_put_buffer, NULL, stdio_fclose,
- NULL, NULL, NULL);
+ s->file = qemu_fopen_ops(s, &stdio_file_write_ops);
}
return s->file;
@@ -333,13 +344,17 @@ fail:
return NULL;
}
+static const QEMUFileOps socket_read_ops = {
+ .get_buffer = socket_get_buffer,
+ .close = socket_close
+};
+
QEMUFile *qemu_fopen_socket(int fd)
{
QEMUFileSocket *s = g_malloc0(sizeof(QEMUFileSocket));
s->fd = fd;
- s->file = qemu_fopen_ops(s, NULL, socket_get_buffer, socket_close,
- NULL, NULL, NULL);
+ s->file = qemu_fopen_ops(s, &socket_read_ops);
return s->file;
}
@@ -361,11 +376,9 @@ QEMUFile *qemu_fopen(const char *filename, const char
*mode)
goto fail;
if(mode[0] == 'w') {
- s->file = qemu_fopen_ops(s, stdio_put_buffer, NULL, stdio_fclose,
- NULL, NULL, NULL);
+ s->file = qemu_fopen_ops(s, &stdio_file_write_ops);
} else {
- s->file = qemu_fopen_ops(s, NULL, stdio_get_buffer, stdio_fclose,
- NULL, NULL, NULL);
+ s->file = qemu_fopen_ops(s, &stdio_file_read_ops);
}
return s->file;
fail:
@@ -390,32 +403,31 @@ static int bdrv_fclose(void *opaque)
return bdrv_flush(opaque);
}
+static const QEMUFileOps bdrv_read_ops = {
+ .get_buffer = block_get_buffer,
+ .close = bdrv_fclose
+};
+
+static const QEMUFileOps bdrv_write_ops = {
+ .put_buffer = block_put_buffer,
+ .close = bdrv_fclose
+};
+
static QEMUFile *qemu_fopen_bdrv(BlockDriverState *bs, int is_writable)
{
if (is_writable)
- return qemu_fopen_ops(bs, block_put_buffer, NULL, bdrv_fclose,
- NULL, NULL, NULL);
- return qemu_fopen_ops(bs, NULL, block_get_buffer, bdrv_fclose, NULL, NULL,
NULL);
+ return qemu_fopen_ops(bs, &bdrv_write_ops);
+ return qemu_fopen_ops(bs, &bdrv_read_ops);
}
-QEMUFile *qemu_fopen_ops(void *opaque, QEMUFilePutBufferFunc *put_buffer,
- QEMUFileGetBufferFunc *get_buffer,
- QEMUFileCloseFunc *close,
- QEMUFileRateLimit *rate_limit,
- QEMUFileSetRateLimit *set_rate_limit,
- QEMUFileGetRateLimit *get_rate_limit)
+QEMUFile *qemu_fopen_ops(void *opaque, const QEMUFileOps *ops)
{
QEMUFile *f;
f = g_malloc0(sizeof(QEMUFile));
f->opaque = opaque;
- f->put_buffer = put_buffer;
- f->get_buffer = get_buffer;
- f->close = close;
- f->rate_limit = rate_limit;
- f->set_rate_limit = set_rate_limit;
- f->get_rate_limit = get_rate_limit;
+ f->ops = ops;
f->is_write = 0;
return f;
@@ -438,11 +450,11 @@ static int qemu_fflush(QEMUFile *f)
{
int ret = 0;
- if (!f->put_buffer)
+ if (!f->ops->put_buffer)
return 0;
if (f->is_write && f->buf_index > 0) {
- ret = f->put_buffer(f->opaque, f->buf, f->buf_offset, f->buf_index);
+ ret = f->ops->put_buffer(f->opaque, f->buf, f->buf_offset,
f->buf_index);
if (ret >= 0) {
f->buf_offset += f->buf_index;
}
@@ -456,7 +468,7 @@ static void qemu_fill_buffer(QEMUFile *f)
int len;
int pending;
- if (!f->get_buffer)
+ if (!f->ops->get_buffer)
return;
if (f->is_write)
@@ -469,7 +481,7 @@ static void qemu_fill_buffer(QEMUFile *f)
f->buf_index = 0;
f->buf_size = pending;
- len = f->get_buffer(f->opaque, f->buf + pending, f->buf_offset,
+ len = f->ops->get_buffer(f->opaque, f->buf + pending, f->buf_offset,
IO_BUF_SIZE - pending);
if (len > 0) {
f->buf_size += len;
@@ -493,8 +505,8 @@ int qemu_fclose(QEMUFile *f)
int ret;
ret = qemu_fflush(f);
- if (f->close) {
- int ret2 = f->close(f->opaque);
+ if (f->ops->close) {
+ int ret2 = f->ops->close(f->opaque);
if (ret >= 0) {
ret = ret2;
}
@@ -511,7 +523,7 @@ int qemu_fclose(QEMUFile *f)
int qemu_file_put_notify(QEMUFile *f)
{
- return f->put_buffer(f->opaque, NULL, 0, 0);
+ return f->ops->put_buffer(f->opaque, NULL, 0, 0);
}
void qemu_put_buffer(QEMUFile *f, const uint8_t *buf, int size)
@@ -658,16 +670,16 @@ static int64_t qemu_ftell(QEMUFile *f)
int qemu_file_rate_limit(QEMUFile *f)
{
- if (f->rate_limit)
- return f->rate_limit(f->opaque);
+ if (f->ops->rate_limit)
+ return f->ops->rate_limit(f->opaque);
return 0;
}
int64_t qemu_file_get_rate_limit(QEMUFile *f)
{
- if (f->get_rate_limit)
- return f->get_rate_limit(f->opaque);
+ if (f->ops->get_rate_limit)
+ return f->ops->get_rate_limit(f->opaque);
return 0;
}
@@ -676,8 +688,8 @@ int64_t qemu_file_set_rate_limit(QEMUFile *f, int64_t
new_rate)
{
/* any failed or completed migration keeps its state to allow probing of
* migration data, but has no associated file anymore */
- if (f && f->set_rate_limit)
- return f->set_rate_limit(f->opaque, new_rate);
+ if (f && f->ops->set_rate_limit)
+ return f->ops->set_rate_limit(f->opaque, new_rate);
return 0;
}
--
1.7.12.1
