[libvirt PATCH 07/11] esx_stream: Use automatic mutex management
Signed-off-by: Tim Wiederhake <twiederh(a)redhat.com>
---
src/esx/esx_stream.c | 65 ++++++++++++++------------------------------
1 file changed, 21 insertions(+), 44 deletions(-)
diff --git a/src/esx/esx_stream.c b/src/esx/esx_stream.c
index 5b20804bb1..2b49c8dd12 100644
--- a/src/esx/esx_stream.c
+++ b/src/esx/esx_stream.c
@@ -198,9 +198,8 @@ esxStreamTransfer(esxStreamPrivate *priv, bool blocking)
static int
esxStreamSend(virStreamPtr stream, const char *data, size_t nbytes)
{
- int result = -1;
esxStreamPrivate *priv = stream->privateData;
- int status;
+ VIR_LOCK_GUARD lock = virLockGuardLock(&priv->curl->lock);
if (nbytes == 0)
return 0;
@@ -215,38 +214,29 @@ esxStreamSend(virStreamPtr stream, const char *data, size_t nbytes)
return -1;
}
- virMutexLock(&priv->curl->lock);
-
priv->buffer = (char *)data;
priv->buffer_size = nbytes;
priv->buffer_used = nbytes;
if (stream->flags & VIR_STREAM_NONBLOCK) {
if (esxStreamTransfer(priv, false) < 0)
- goto cleanup;
+ return -1;
- if (priv->buffer_used < priv->buffer_size)
- result = priv->buffer_size - priv->buffer_used;
- else
- result = -2;
+ if (priv->buffer_used >= priv->buffer_size)
+ return -2;
} else /* blocking */ {
do {
- status = esxStreamTransfer(priv, true);
+ int status = esxStreamTransfer(priv, true);
if (status < 0)
- goto cleanup;
+ return -1;
if (status > 0)
break;
} while (priv->buffer_used > 0);
-
- result = priv->buffer_size - priv->buffer_used;
}
- cleanup:
- virMutexUnlock(&priv->curl->lock);
-
- return result;
+ return priv->buffer_size - priv->buffer_used;
}
static int
@@ -255,9 +245,8 @@ esxStreamRecvFlags(virStreamPtr stream,
size_t nbytes,
unsigned int flags)
{
- int result = -1;
esxStreamPrivate *priv = stream->privateData;
- int status;
+ VIR_LOCK_GUARD lock = virLockGuardLock(&priv->curl->lock);
virCheckFlags(0, -1);
@@ -274,8 +263,6 @@ esxStreamRecvFlags(virStreamPtr stream,
return -1;
}
- virMutexLock(&priv->curl->lock);
-
priv->buffer = data;
priv->buffer_size = nbytes;
priv->buffer_used = 0;
@@ -291,33 +278,25 @@ esxStreamRecvFlags(virStreamPtr stream,
priv->backlog_used - priv->buffer_used);
priv->backlog_used -= priv->buffer_used;
- result = priv->buffer_used;
} else if (stream->flags & VIR_STREAM_NONBLOCK) {
if (esxStreamTransfer(priv, false) < 0)
- goto cleanup;
+ return -1;
- if (priv->buffer_used > 0)
- result = priv->buffer_used;
- else
- result = -2;
+ if (priv->buffer_used <= 0)
+ return -2;
} else /* blocking */ {
do {
- status = esxStreamTransfer(priv, true);
+ int status = esxStreamTransfer(priv, true);
if (status < 0)
- goto cleanup;
+ return -1;
if (status > 0)
break;
} while (priv->buffer_used < priv->buffer_size);
-
- result = priv->buffer_used;
}
- cleanup:
- virMutexUnlock(&priv->curl->lock);
-
- return result;
+ return priv->buffer_used;
}
static int
@@ -348,18 +327,16 @@ esxStreamClose(virStreamPtr stream, bool finish)
if (!priv)
return 0;
- virMutexLock(&priv->curl->lock);
+ VIR_WITH_MUTEX_LOCK_GUARD(&priv->curl->lock) {
+ if (finish && priv->backlog_used > 0) {
+ virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+ _("Stream has untransferred data left"));
+ result = -1;
+ }
- if (finish && priv->backlog_used > 0) {
- virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
- _("Stream has untransferred data left"));
- result = -1;
+ stream->privateData = NULL;
}
- stream->privateData = NULL;
-
- virMutexUnlock(&priv->curl->lock);
-
esxFreeStreamPrivate(&priv);
return result;
--
2.31.1