[Xen-devel] [PATCH RFC 4/8] golang/xenlight: Implement libxl_domain_info and libxl_domain_unpause

[Ronald Rojas <ronladred@xxxxxxxxx>]

Add calls for the following host-related functionality:
- libxl_domain_info
- libxl_domain_unpause

Include Golang version for the libxl_domain_info as
DomainInfo.

Signed-off-by: George Dunlap <george.dunlap@xxxxxxxxxx>
Signed-off-by: Ronald Rojas <ronladred@xxxxxxxxx>
---
 tools/golang/xenlight/xenlight.go | 92 +++++++++++++++++++++++++++++++++++++++
 1 file changed, 92 insertions(+)

diff --git a/tools/golang/xenlight/xenlight.go 
b/tools/golang/xenlight/xenlight.go
index 92410a8..dd6893c 100644
--- a/tools/golang/xenlight/xenlight.go
+++ b/tools/golang/xenlight/xenlight.go
@@ -36,6 +36,7 @@ import "C"
 import (
        "fmt"
        "unsafe"
+       "time"
 )
 
 /*
@@ -104,6 +105,12 @@ var errors = [...]string{
  * Types: Builtins
  */
 
+type Domid uint32
+
+type MemKB uint64
+
+type Uuid C.libxl_uuid
+
 type Context struct {
        ctx *C.libxl_ctx
 }
@@ -165,6 +172,32 @@ type VersionInfo struct {
        BuildId          string
 }
 
+type Dominfo struct {
+       Uuid       Uuid
+       Domid      Domid
+       Ssidref uint32
+       SsidLabel string
+       Running    bool
+       Blocked    bool
+       Paused     bool
+       Shutdown   bool
+       Dying      bool
+       NeverStop bool
+
+       ShutdownReason   int32 // FIXME shutdown_reason enumeration
+       OutstandingMemkb MemKB
+       CurrentMemkb     MemKB
+       SharedMemkb      MemKB
+       PagedMemkb       MemKB
+       MaxMemkb         MemKB
+       CpuTime          time.Duration
+       VcpuMaxId       uint32
+       VcpuOnline       uint32
+       Cpupool           uint32
+       DomainType       int32 //FIXME libxl_domain_type enumeration
+
+}
+
 /*
  * Context
  */
@@ -343,3 +376,62 @@ func (Ctx *Context) GetVersionInfo() (info *VersionInfo, 
err error) {
 
        return
 }
+
+func (Ctx *Context) DomainInfo(Id Domid) (di *Dominfo, err error) {
+       err = Ctx.CheckOpen()
+       if err != nil {
+               return
+       }
+
+       var cdi C.libxl_dominfo
+
+       ret := C.libxl_domain_info(Ctx.ctx, unsafe.Pointer(&cdi), 
C.uint32_t(Id))
+
+       if ret != 0 {
+               err = Error(-ret)
+               return
+       }
+
+       // We could consider having this boilerplate generated by the
+       // idl, in a function like this:
+       //
+       // di = translateCdomaininfoToGoDomaininfo(cdi)
+       di = &Dominfo{}
+       di.Uuid = Uuid(cdi.uuid)
+       di.Domid = Domid(cdi.domid)
+       di.Ssidref = uint32(cdi.ssidref)
+       di.SsidLabel = C.GoString(cdi.ssid_label)
+       di.Running = bool(cdi.running)
+       di.Blocked = bool(cdi.blocked)
+       di.Paused = bool(cdi.paused)
+       di.Shutdown = bool(cdi.shutdown)
+       di.Dying = bool(cdi.dying)
+       di.NeverStop= bool(cdi.never_stop)
+       di.ShutdownReason= int32(cdi.shutdown_reason)
+       di.OutstandingMemkb= MemKB(cdi.outstanding_memkb)
+       di.CurrentMemkb = MemKB(cdi.current_memkb)
+       di.SharedMemkb = MemKB(cdi.shared_memkb)
+       di.PagedMemkb = MemKB(cdi.paged_memkb)
+       di.MaxMemkb= MemKB(cdi.max_memkb)
+       di.CpuTime= time.Duration(cdi.cpu_time)
+       di.VcpuMaxId = uint32(cdi.vcpu_max_id)
+       di.VcpuOnline = uint32(cdi.vcpu_online)
+       di.Cpupool = uint32(cdi.cpupool)
+       di.DomainType = int32(cdi.domain_type)
+
+       return
+}
+
+func (Ctx *Context) DomainUnpause(Id Domid) (err error) {
+       err = Ctx.CheckOpen()
+       if err != nil {
+               return
+       }
+
+       ret := C.libxl_domain_unpause(Ctx.ctx, C.uint32_t(Id))
+
+       if ret != 0 {
+               err = Error(-ret)
+       }
+       return
+}
-- 
2.7.4


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