From: "Daniel P. Berrange" <berrange@xxxxxxxxxx>
Make qemuAgentPtr and qemuMonitorPtr types use the virObject APIs
for reference counting
Signed-off-by: Daniel P. Berrange <berrange@xxxxxxxxxx>
---
src/qemu/qemu_agent.c | 86 ++++++++++++++++++-----------------------
src/qemu/qemu_agent.h | 3 --
src/qemu/qemu_domain.c | 22 +++++------
src/qemu/qemu_monitor.c | 97 ++++++++++++++++++++---------------------------
src/qemu/qemu_monitor.h | 3 --
5 files changed, 89 insertions(+), 122 deletions(-)
diff --git a/src/qemu/qemu_agent.c b/src/qemu/qemu_agent.c
index 7a0381c..7c3de4d 100644
--- a/src/qemu/qemu_agent.c
+++ b/src/qemu/qemu_agent.c
@@ -40,6 +40,7 @@
#include "json.h"
#include "virfile.h"
#include "virtime.h"
+#include "virobject.h"
#define VIR_FROM_THIS VIR_FROM_QEMU
@@ -80,11 +81,11 @@ struct _qemuAgentMessage {
struct _qemuAgent {
+ virObject object;
+
virMutex lock; /* also used to protect fd */
virCond notify;
- int refs;
-
int fd;
int watch;
@@ -114,6 +115,22 @@ struct _qemuAgent {
qemuAgentEvent await_event;
};
+static virClassPtr qemuAgentClass;
+static void qemuAgentDispose(void *obj);
+
+static int qemuAgentOnceInit(void)
+{
+ if (!(qemuAgentClass = virClassNew("qemuAgent",
+ sizeof(qemuAgent),
+ qemuAgentDispose)))
+ return -1;
+
+ return 0;
+}
+
+VIR_ONCE_GLOBAL_INIT(qemuAgent)
+
+
#if DEBUG_RAW_IO
# include <c-ctype.h>
static char *
@@ -146,45 +163,15 @@ void qemuAgentUnlock(qemuAgentPtr mon)
}
-static void qemuAgentFree(qemuAgentPtr mon)
+static void qemuAgentDispose(void *obj)
{
+ qemuAgentPtr mon = obj;
VIR_DEBUG("mon=%p", mon);
if (mon->cb && mon->cb->destroy)
(mon->cb->destroy)(mon, mon->vm);
ignore_value(virCondDestroy(&mon->notify));
virMutexDestroy(&mon->lock);
VIR_FREE(mon->buffer);
- VIR_FREE(mon);
-}
-
-int qemuAgentRef(qemuAgentPtr mon)
-{
- mon->refs++;
- VIR_DEBUG("%d", mon->refs);
- return mon->refs;
-}
-
-int qemuAgentUnref(qemuAgentPtr mon)
-{
- mon->refs--;
- VIR_DEBUG("%d", mon->refs);
- if (mon->refs == 0) {
- qemuAgentUnlock(mon);
- qemuAgentFree(mon);
- return 0;
- }
-
- return mon->refs;
-}
-
-static void
-qemuAgentUnwatch(void *monitor)
-{
- qemuAgentPtr mon = monitor;
-
- qemuAgentLock(mon);
- if (qemuAgentUnref(mon) > 0)
- qemuAgentUnlock(mon);
}
static int
@@ -599,9 +586,9 @@ qemuAgentIO(int watch, int fd, int events, void *opaque) {
bool error = false;
bool eof = false;
+ virObjectRef(mon);
/* lock access to the monitor and protect fd */
qemuAgentLock(mon);
- qemuAgentRef(mon);
#if DEBUG_IO
VIR_DEBUG("Agent %p I/O on watch %d fd %d events %d", mon, watch, fd, events);
#endif
@@ -704,8 +691,8 @@ qemuAgentIO(int watch, int fd, int events, void *opaque) {
/* Make sure anyone waiting wakes up now */
virCondSignal(&mon->notify);
- if (qemuAgentUnref(mon) > 0)
- qemuAgentUnlock(mon);
+ qemuAgentUnlock(mon);
+ virObjectUnref(mon);
VIR_DEBUG("Triggering EOF callback");
(eofNotify)(mon, vm);
} else if (error) {
@@ -715,13 +702,13 @@ qemuAgentIO(int watch, int fd, int events, void *opaque) {
/* Make sure anyone waiting wakes up now */
virCondSignal(&mon->notify);
- if (qemuAgentUnref(mon) > 0)
- qemuAgentUnlock(mon);
+ qemuAgentUnlock(mon);
+ virObjectUnref(mon);
VIR_DEBUG("Triggering error callback");
(errorNotify)(mon, vm);
} else {
- if (qemuAgentUnref(mon) > 0)
- qemuAgentUnlock(mon);
+ qemuAgentUnlock(mon);
+ virObjectUnref(mon);
}
}
@@ -739,10 +726,11 @@ qemuAgentOpen(virDomainObjPtr vm,
return NULL;
}
- if (VIR_ALLOC(mon) < 0) {
- virReportOOMError();
+ if (qemuAgentInitialize() < 0)
+ return NULL;
+
+ if (!(mon = virObjectNew(qemuAgentClass)))
return NULL;
- }
if (virMutexInit(&mon->lock) < 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
@@ -758,7 +746,6 @@ qemuAgentOpen(virDomainObjPtr vm,
return NULL;
}
mon->fd = -1;
- mon->refs = 1;
mon->vm = vm;
mon->cb = cb;
qemuAgentLock(mon);
@@ -791,12 +778,13 @@ qemuAgentOpen(virDomainObjPtr vm,
VIR_EVENT_HANDLE_WRITABLE :
0),
qemuAgentIO,
- mon, qemuAgentUnwatch)) < 0) {
+ mon,
+ (virFreeCallback)virObjectUnref)) < 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("unable to register monitor events"));
goto cleanup;
}
- qemuAgentRef(mon);
+ virObjectRef(mon);
VIR_DEBUG("New mon %p fd =%d watch=%d", mon, mon->fd, mon->watch);
qemuAgentUnlock(mon);
@@ -837,9 +825,9 @@ void qemuAgentClose(qemuAgentPtr mon)
mon->msg->finished = 1;
virCondSignal(&mon->notify);
}
+ qemuAgentUnlock(mon);
- if (qemuAgentUnref(mon) > 0)
- qemuAgentUnlock(mon);
+ virObjectUnref(mon);
}
#define QEMU_AGENT_WAIT_TIME (1000ull * 5)
diff --git a/src/qemu/qemu_agent.h b/src/qemu/qemu_agent.h
index 0816d90..35bc5b2 100644
--- a/src/qemu/qemu_agent.h
+++ b/src/qemu/qemu_agent.h
@@ -50,9 +50,6 @@ qemuAgentPtr qemuAgentOpen(virDomainObjPtr vm,
void qemuAgentLock(qemuAgentPtr mon);
void qemuAgentUnlock(qemuAgentPtr mon);
-int qemuAgentRef(qemuAgentPtr mon);
-int qemuAgentUnref(qemuAgentPtr mon) ATTRIBUTE_RETURN_CHECK;
-
void qemuAgentClose(qemuAgentPtr mon);
typedef enum {
diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c
index d164ef0..2140cd1 100644
--- a/src/qemu/qemu_domain.c
+++ b/src/qemu/qemu_domain.c
@@ -994,7 +994,7 @@ qemuDomainObjEnterMonitorInternal(struct qemud_driver *driver,
}
qemuMonitorLock(priv->mon);
- qemuMonitorRef(priv->mon);
+ virObjectRef(priv->mon);
ignore_value(virTimeMillisNow(&priv->monStart));
virDomainObjUnlock(obj);
if (driver_locked)
@@ -1009,11 +1009,11 @@ qemuDomainObjExitMonitorInternal(struct qemud_driver *driver,
virDomainObjPtr obj)
{
qemuDomainObjPrivatePtr priv = obj->privateData;
- int refs;
+ bool hasRefs;
- refs = qemuMonitorUnref(priv->mon);
+ hasRefs = virObjectUnref(priv->mon);
- if (refs > 0)
+ if (hasRefs)
qemuMonitorUnlock(priv->mon);
if (driver_locked)
@@ -1021,9 +1021,8 @@ qemuDomainObjExitMonitorInternal(struct qemud_driver *driver,
virDomainObjLock(obj);
priv->monStart = 0;
- if (refs == 0) {
+ if (!hasRefs)
priv->mon = NULL;
- }
if (priv->job.active == QEMU_JOB_ASYNC_NESTED) {
qemuDomainObjResetJob(priv);
@@ -1118,7 +1117,7 @@ qemuDomainObjEnterAgentInternal(struct qemud_driver *driver,
qemuDomainObjPrivatePtr priv = obj->privateData;
qemuAgentLock(priv->agent);
- qemuAgentRef(priv->agent);
+ virObjectRef(priv->agent);
ignore_value(virTimeMillisNow(&priv->agentStart));
virDomainObjUnlock(obj);
if (driver_locked)
@@ -1133,11 +1132,11 @@ qemuDomainObjExitAgentInternal(struct qemud_driver *driver,
virDomainObjPtr obj)
{
qemuDomainObjPrivatePtr priv = obj->privateData;
- int refs;
+ bool hasRefs;
- refs = qemuAgentUnref(priv->agent);
+ hasRefs = virObjectUnref(priv->agent);
- if (refs > 0)
+ if (hasRefs)
qemuAgentUnlock(priv->agent);
if (driver_locked)
@@ -1145,9 +1144,8 @@ qemuDomainObjExitAgentInternal(struct qemud_driver *driver,
virDomainObjLock(obj);
priv->agentStart = 0;
- if (refs == 0) {
+ if (!hasRefs)
priv->agent = NULL;
- }
}
/*
diff --git a/src/qemu/qemu_monitor.c b/src/qemu/qemu_monitor.c
index b8a2f2f..8e0a557 100644
--- a/src/qemu/qemu_monitor.c
+++ b/src/qemu/qemu_monitor.c
@@ -36,6 +36,7 @@
#include "memory.h"
#include "logging.h"
#include "virfile.h"
+#include "virobject.h"
#ifdef WITH_DTRACE_PROBES
# include "libvirt_qemu_probes.h"
@@ -47,11 +48,11 @@
#define DEBUG_RAW_IO 0
struct _qemuMonitor {
+ virObject object;
+
virMutex lock; /* also used to protect fd */
virCond notify;
- int refs;
-
int fd;
int watch;
int hasSendFD;
@@ -80,6 +81,21 @@ struct _qemuMonitor {
unsigned json_hmp: 1;
};
+static virClassPtr qemuMonitorClass;
+static void qemuMonitorDispose(void *obj);
+
+static int qemuMonitorOnceInit(void)
+{
+ if (!(qemuMonitorClass = virClassNew("qemuMonitor",
+ sizeof(qemuMonitor),
+ qemuMonitorDispose)))
+ return -1;
+
+ return 0;
+}
+
+VIR_ONCE_GLOBAL_INIT(qemuMonitor)
+
VIR_ENUM_IMPL(qemuMonitorMigrationStatus,
QEMU_MONITOR_MIGRATION_STATUS_LAST,
@@ -224,8 +240,10 @@ void qemuMonitorUnlock(qemuMonitorPtr mon)
}
-static void qemuMonitorFree(qemuMonitorPtr mon)
+static void qemuMonitorDispose(void *obj)
{
+ qemuMonitorPtr mon = obj;
+
VIR_DEBUG("mon=%p", mon);
if (mon->cb && mon->cb->destroy)
(mon->cb->destroy)(mon, mon->vm);
@@ -233,41 +251,8 @@ static void qemuMonitorFree(qemuMonitorPtr mon)
{}
virMutexDestroy(&mon->lock);
VIR_FREE(mon->buffer);
- VIR_FREE(mon);
-}
-
-int qemuMonitorRef(qemuMonitorPtr mon)
-{
- mon->refs++;
- PROBE(QEMU_MONITOR_REF,
- "mon=%p refs=%d", mon, mon->refs);
- return mon->refs;
-}
-
-int qemuMonitorUnref(qemuMonitorPtr mon)
-{
- mon->refs--;
-
- PROBE(QEMU_MONITOR_UNREF,
- "mon=%p refs=%d", mon, mon->refs);
- if (mon->refs == 0) {
- qemuMonitorUnlock(mon);
- qemuMonitorFree(mon);
- return 0;
- }
-
- return mon->refs;
}
-static void
-qemuMonitorUnwatch(void *monitor)
-{
- qemuMonitorPtr mon = monitor;
-
- qemuMonitorLock(mon);
- if (qemuMonitorUnref(mon) > 0)
- qemuMonitorUnlock(mon);
-}
static int
qemuMonitorOpenUnix(const char *monitor, pid_t cpid)
@@ -567,9 +552,10 @@ qemuMonitorIO(int watch, int fd, int events, void *opaque) {
bool error = false;
bool eof = false;
+ virObjectRef(mon);
+
/* lock access to the monitor and protect fd */
qemuMonitorLock(mon);
- qemuMonitorRef(mon);
#if DEBUG_IO
VIR_DEBUG("Monitor %p I/O on watch %d fd %d events %d", mon, watch, fd, events);
#endif
@@ -667,8 +653,8 @@ qemuMonitorIO(int watch, int fd, int events, void *opaque) {
/* Make sure anyone waiting wakes up now */
virCondSignal(&mon->notify);
- if (qemuMonitorUnref(mon) > 0)
- qemuMonitorUnlock(mon);
+ qemuMonitorUnlock(mon);
+ virObjectUnref(mon);
VIR_DEBUG("Triggering EOF callback");
(eofNotify)(mon, vm);
} else if (error) {
@@ -678,13 +664,13 @@ qemuMonitorIO(int watch, int fd, int events, void *opaque) {
/* Make sure anyone waiting wakes up now */
virCondSignal(&mon->notify);
- if (qemuMonitorUnref(mon) > 0)
- qemuMonitorUnlock(mon);
+ qemuMonitorUnlock(mon);
+ virObjectUnref(mon);
VIR_DEBUG("Triggering error callback");
(errorNotify)(mon, vm);
} else {
- if (qemuMonitorUnref(mon) > 0)
- qemuMonitorUnlock(mon);
+ qemuMonitorUnlock(mon);
+ virObjectUnref(mon);
}
}
@@ -703,10 +689,11 @@ qemuMonitorOpen(virDomainObjPtr vm,
return NULL;
}
- if (VIR_ALLOC(mon) < 0) {
- virReportOOMError();
+ if (qemuMonitorInitialize() < 0)
+ return NULL;
+
+ if (!(mon = virObjectNew(qemuMonitorClass)))
return NULL;
- }
if (virMutexInit(&mon->lock) < 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
@@ -722,7 +709,6 @@ qemuMonitorOpen(virDomainObjPtr vm,
return NULL;
}
mon->fd = -1;
- mon->refs = 1;
mon->vm = vm;
mon->json = json;
mon->cb = cb;
@@ -764,16 +750,17 @@ qemuMonitorOpen(virDomainObjPtr vm,
VIR_EVENT_HANDLE_ERROR |
VIR_EVENT_HANDLE_READABLE,
qemuMonitorIO,
- mon, qemuMonitorUnwatch)) < 0) {
+ mon,
+ (virFreeCallback)virObjectUnref)) < 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("unable to register monitor events"));
goto cleanup;
}
- qemuMonitorRef(mon);
+ virObjectRef(mon);
PROBE(QEMU_MONITOR_NEW,
"mon=%p refs=%d fd=%d",
- mon, mon->refs, mon->fd);
+ mon, mon->object.refs, mon->fd);
qemuMonitorUnlock(mon);
return mon;
@@ -798,7 +785,7 @@ void qemuMonitorClose(qemuMonitorPtr mon)
qemuMonitorLock(mon);
PROBE(QEMU_MONITOR_CLOSE,
- "mon=%p refs=%d", mon, mon->refs);
+ "mon=%p refs=%d", mon, mon->object.refs);
if (mon->fd >= 0) {
if (mon->watch)
@@ -827,8 +814,8 @@ void qemuMonitorClose(qemuMonitorPtr mon)
virCondSignal(&mon->notify);
}
- if (qemuMonitorUnref(mon) > 0)
- qemuMonitorUnlock(mon);
+ qemuMonitorUnlock(mon);
+ virObjectUnref(mon);
}
@@ -919,12 +906,12 @@ cleanup:
/* Ensure proper locking around callbacks. */
#define QEMU_MONITOR_CALLBACK(mon, ret, callback, ...) \
do { \
- qemuMonitorRef(mon); \
+ virObjectRef(mon); \
qemuMonitorUnlock(mon); \
if ((mon)->cb && (mon)->cb->callback) \
(ret) = ((mon)->cb->callback)(mon, __VA_ARGS__); \
qemuMonitorLock(mon); \
- ignore_value(qemuMonitorUnref(mon)); \
+ virObjectUnref(mon); \
} while (0)
int qemuMonitorGetDiskSecret(qemuMonitorPtr mon,
diff --git a/src/qemu/qemu_monitor.h b/src/qemu/qemu_monitor.h
index 66bec38..e90315d 100644
--- a/src/qemu/qemu_monitor.h
+++ b/src/qemu/qemu_monitor.h
@@ -153,9 +153,6 @@ int qemuMonitorCheckHMP(qemuMonitorPtr mon, const char *cmd);
void qemuMonitorLock(qemuMonitorPtr mon);
void qemuMonitorUnlock(qemuMonitorPtr mon);
-int qemuMonitorRef(qemuMonitorPtr mon);
-int qemuMonitorUnref(qemuMonitorPtr mon) ATTRIBUTE_RETURN_CHECK;
-
int qemuMonitorSetLink(qemuMonitorPtr mon,
const char *name,
enum virDomainNetInterfaceLinkState state) ;
--
1.7.10.2
--
libvir-list mailing list
libvir-list@xxxxxxxxxx
https://www.redhat.com/mailman/listinfo/libvir-list