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[libvirt] [libvirt-go PATCH] Add virDomainSetIOThreadParams binding

John Ferlan posted 1 patch 7 years, 2 months ago
Failed in applying to current master (apply log)
domain.go         | 52 +++++++++++++++++++++++++++++++++++++++++++++++
domain_wrapper.go | 20 ++++++++++++++++++
domain_wrapper.h  |  8 ++++++++
3 files changed, 80 insertions(+)
[libvirt] [libvirt-go PATCH] Add virDomainSetIOThreadParams binding
Posted by John Ferlan 7 years, 2 months ago 
Signed-off-by: John Ferlan <jferlan@redhat.com>
---
 
 Well I've given it a "go", hopefully it's (more or less) right.  The build
 and test at least pass ;-)

 domain.go         | 52 +++++++++++++++++++++++++++++++++++++++++++++++
 domain_wrapper.go | 20 ++++++++++++++++++
 domain_wrapper.h  |  8 ++++++++
 3 files changed, 80 insertions(+)

diff --git a/domain.go b/domain.go
index e011980..3a6811f 100644
--- a/domain.go
+++ b/domain.go
@@ -769,6 +769,7 @@ const (
 	DOMAIN_STATS_INTERFACE = DomainStatsTypes(C.VIR_DOMAIN_STATS_INTERFACE)
 	DOMAIN_STATS_BLOCK     = DomainStatsTypes(C.VIR_DOMAIN_STATS_BLOCK)
 	DOMAIN_STATS_PERF      = DomainStatsTypes(C.VIR_DOMAIN_STATS_PERF)
+	DOMAIN_STATS_IOTHREAD  = DomainStatsTypes(C.VIR_DOMAIN_STATS_IOTHREAD)
 )
 
 type DomainCoreDumpFlags int
@@ -4207,6 +4208,57 @@ func (d *Domain) DelIOThread(id uint, flags DomainModificationImpact) error {
 	return nil
 }
 
+// See also https://libvirt.org/html/libvirt-libvirt-domain.html#virDomainSetIOThreadParams
+
+type DomainSetIOThreadParams struct {
+	PollMaxNsSet   bool
+	PollMaxNs      uint64
+	PollGrowSet    bool
+	PollGrow       uint
+	PollShrinkSet  bool
+	PollShrink     uint64
+}
+
+func getSetIOThreadParamsFieldInfo(params *DomainSetIOThreadParams) map[string]typedParamsFieldInfo {
+	return map[string]typedParamsFieldInfo{
+		C.VIR_DOMAIN_IOTHREAD_POLL_MAX_NS: typedParamsFieldInfo{
+			set: &params.PollMaxNsSet,
+			ul:  &params.PollMaxNs,
+		},
+		C.VIR_DOMAIN_IOTHREAD_POLL_GROW: typedParamsFieldInfo{
+			set: &params.PollGrowSet,
+			ui:  &params.PollGrow,
+		},
+		C.VIR_DOMAIN_IOTHREAD_POLL_SHRINK: typedParamsFieldInfo{
+			set: &params.PollShrinkSet,
+			ul:  &params.PollShrink,
+		},
+	}
+}
+
+func (d *Domain) SetIOThreadParams(iothreadid uint, params *DomainSetIOThreadParams, flags DomainModificationImpact) error {
+	if C.LIBVIR_VERSION_NUMBER < 4010000 {
+		return makeNotImplementedError("virDomainSetIOThreadParams")
+	}
+	info := getSetIOThreadParamsFieldInfo(params)
+
+	cparams, gerr := typedParamsPackNew(info)
+	if gerr != nil {
+		return gerr
+	}
+	nparams := len(*cparams)
+
+	defer C.virTypedParamsClear((*C.virTypedParameter)(unsafe.Pointer(&(*cparams)[0])), C.int(nparams))
+
+	var err C.virError
+	ret := C.virDomainSetIOThreadParamsWrapper(d.ptr, C.uint(iothreadid), (*C.virTypedParameter)(unsafe.Pointer(&(*cparams)[0])), C.int(nparams), C.uint(flags), &err)
+	if ret == -1 {
+		return makeError(&err)
+	}
+
+	return nil
+}
+
 // See also https://libvirt.org/html/libvirt-libvirt-domain.html#virDomainGetEmulatorPinInfo
 func (d *Domain) GetEmulatorPinInfo(flags DomainModificationImpact) ([]bool, error) {
 	var cnodeinfo C.virNodeInfo
diff --git a/domain_wrapper.go b/domain_wrapper.go
index b42dd42..f674bd5 100644
--- a/domain_wrapper.go
+++ b/domain_wrapper.go
@@ -1913,6 +1913,26 @@ virDomainSetGuestVcpusWrapper(virDomainPtr domain,
 }
 
 
+int
+virDomainSetIOThreadParamsWrapper(virDomainPtr domain,
+                                  unsigned int iothread_id,
+                                  virTypedParameterPtr params,
+                                  int nparams,
+                                  unsigned int flags,
+                                  virErrorPtr err)
+{
+#if LIBVIR_VERSION_NUMBER < 4010000
+    assert(0); // Caller should have checked version
+#else
+    int ret = virDomainSetIOThreadParams(domain, iothread_id, params, nparams, flags);
+    if (ret < 0) {
+        virCopyLastError(err);
+    }
+    return ret;
+#endif
+}
+
+
 int
 virDomainSetInterfaceParametersWrapper(virDomainPtr domain,
                                        const char *device,
diff --git a/domain_wrapper.h b/domain_wrapper.h
index 7bd8282..48a4cd3 100644
--- a/domain_wrapper.h
+++ b/domain_wrapper.h
@@ -813,6 +813,14 @@ virDomainSetGuestVcpusWrapper(virDomainPtr domain,
                               unsigned int flags,
                               virErrorPtr err);
 
+int
+virDomainSetIOThreadParamsWrapper(virDomainPtr domain,
+                                  unsigned int iothread_id,
+                                  virTypedParameterPtr params,
+                                  int nparams,
+                                  unsigned int flags,
+                                  virErrorPtr err);
+
 int
 virDomainSetInterfaceParametersWrapper(virDomainPtr domain,
                                        const char *device,
-- 
2.17.2

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Re: [libvirt] [libvirt-go PATCH] Add virDomainSetIOThreadParams binding
Posted by Daniel P. Berrangé 7 years, 2 months ago 
On Tue, Nov 20, 2018 at 01:50:03PM -0500, John Ferlan wrote:
> Signed-off-by: John Ferlan <jferlan@redhat.com>
> ---
>  
>  Well I've given it a "go", hopefully it's (more or less) right.  The build
>  and test at least pass ;-)

Code looks good apart from a data type mixup

> 
>  domain.go         | 52 +++++++++++++++++++++++++++++++++++++++++++++++
>  domain_wrapper.go | 20 ++++++++++++++++++
>  domain_wrapper.h  |  8 ++++++++
>  3 files changed, 80 insertions(+)
> 
> diff --git a/domain.go b/domain.go
> index e011980..3a6811f 100644
> --- a/domain.go
> +++ b/domain.go
> @@ -769,6 +769,7 @@ const (
>  	DOMAIN_STATS_INTERFACE = DomainStatsTypes(C.VIR_DOMAIN_STATS_INTERFACE)
>  	DOMAIN_STATS_BLOCK     = DomainStatsTypes(C.VIR_DOMAIN_STATS_BLOCK)
>  	DOMAIN_STATS_PERF      = DomainStatsTypes(C.VIR_DOMAIN_STATS_PERF)
> +	DOMAIN_STATS_IOTHREAD  = DomainStatsTypes(C.VIR_DOMAIN_STATS_IOTHREAD)
>  )
>  
>  type DomainCoreDumpFlags int
> @@ -4207,6 +4208,57 @@ func (d *Domain) DelIOThread(id uint, flags DomainModificationImpact) error {
>  	return nil
>  }
>  
> +// See also https://libvirt.org/html/libvirt-libvirt-domain.html#virDomainSetIOThreadParams
> +
> +type DomainSetIOThreadParams struct {
> +	PollMaxNsSet   bool
> +	PollMaxNs      uint64
> +	PollGrowSet    bool
> +	PollGrow       uint
> +	PollShrinkSet  bool
> +	PollShrink     uint64
> +}

In the QEMU driver code, MAX_NS is a uint64 but GROW
and SHRINK are both uints, so this type is wrong.

Incidentally the data types should be mentioned in
the header file docs comments for the constants.


> +
> +func getSetIOThreadParamsFieldInfo(params *DomainSetIOThreadParams) map[string]typedParamsFieldInfo {
> +	return map[string]typedParamsFieldInfo{
> +		C.VIR_DOMAIN_IOTHREAD_POLL_MAX_NS: typedParamsFieldInfo{
> +			set: &params.PollMaxNsSet,
> +			ul:  &params.PollMaxNs,
> +		},
> +		C.VIR_DOMAIN_IOTHREAD_POLL_GROW: typedParamsFieldInfo{
> +			set: &params.PollGrowSet,
> +			ui:  &params.PollGrow,
> +		},
> +		C.VIR_DOMAIN_IOTHREAD_POLL_SHRINK: typedParamsFieldInfo{
> +			set: &params.PollShrinkSet,
> +			ul:  &params.PollShrink,
> +		},

And here s/ul/ui/

> +	}
> +}

If that is fixed

Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>


Regards,
Daniel
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