* [PATCH RFC v3 8/8] golang/xenlight: Implement cpupool operations
2017-03-09 19:00 [PATCH RFC v3 7/8] golang/xenlight: Implement libxl_scheduler enumeration Ronald Rojas
@ 2017-03-09 19:00 ` Ronald Rojas
0 siblings, 0 replies; 2+ messages in thread
From: Ronald Rojas @ 2017-03-09 19:00 UTC (permalink / raw)
Cc: Ronald Rojas, wei.liu2, ian.jackson, George Dunlap, xen-devel
Include some useful "Utility" functions:
- CpupoolFindByName
- CpupoolMakeFree
Still need to implement the following functions:
- libxl_cpupool_rename
- libxl_cpupool_cpuadd_node
- libxl_cpupool_cpuremove_node
- libxl_cpupool_movedomain
Signed-off-by: George Dunlap <george.dunlap@citrix.com>
Signed-off-by: Ronald Rojas <ronladred@gmail.com>
---
CC: xen-devel@lists.xen.org
CC: george.dunlap@citrix.com
CC: ian.jackson@eu.citrix.com
CC: wei.liu2@citrix.com
---
tools/golang/xenlight/xenlight.go | 238 ++++++++++++++++++++++++++++++++++++++
1 file changed, 238 insertions(+)
diff --git a/tools/golang/xenlight/xenlight.go b/tools/golang/xenlight/xenlight.go
index d4a6bc1..853a634 100644
--- a/tools/golang/xenlight/xenlight.go
+++ b/tools/golang/xenlight/xenlight.go
@@ -373,6 +373,244 @@ func SchedulerFromString(name string) (s Scheduler, err error) {
return
}
+
+// libxl_cpupoolinfo = Struct("cpupoolinfo", [
+// ("poolid", uint32),
+// ("pool_name", string),
+// ("sched", libxl_scheduler),
+// ("n_dom", uint32),
+// ("cpumap", libxl_bitmap)
+// ], dir=DIR_OUT)
+
+type CpupoolInfo struct {
+ Poolid uint32
+ PoolName string
+ Scheduler Scheduler
+ DomainCount int
+ Cpumap Bitmap
+}
+
+func (cci C.libxl_cpupoolinfo)CToGo ()(gci CpupoolInfo) {
+ gci.Poolid = uint32(cci.poolid)
+ gci.PoolName = C.GoString(cci.pool_name)
+ gci.Scheduler = Scheduler(cci.sched)
+ gci.DomainCount = int(cci.n_dom)
+ gci.Cpumap = cci.cpumap.CToGo()
+
+ return
+}
+
+// libxl_cpupoolinfo * libxl_list_cpupool(libxl_ctx*, int *nb_pool_out);
+// void libxl_cpupoolinfo_list_free(libxl_cpupoolinfo *list, int nb_pool);
+func (Ctx *Context) ListCpupool() (list []CpupoolInfo) {
+ err := Ctx.CheckOpen()
+ if err != nil {
+ return
+ }
+
+ var nbPool C.int
+
+ c_cpupool_list := C.libxl_list_cpupool(Ctx.ctx, &nbPool)
+
+ defer C.libxl_cpupoolinfo_list_free(c_cpupool_list, nbPool)
+
+ if int(nbPool) == 0 {
+ return
+ }
+
+ // Magic
+ cpupoolListSlice := (*[1 << 30]C.libxl_cpupoolinfo)(unsafe.Pointer(c_cpupool_list))[:nbPool:nbPool]
+
+ for i := range cpupoolListSlice {
+ info := cpupoolListSlice[i].CToGo()
+
+ list = append(list, info)
+ }
+
+ return
+}
+
+// int libxl_cpupool_info(libxl_ctx *ctx, libxl_cpupoolinfo *info, uint32_t poolid);
+func (Ctx *Context) CpupoolInfo(Poolid uint32) (pool CpupoolInfo) {
+ err := Ctx.CheckOpen()
+ if err != nil {
+ return
+ }
+
+ var c_cpupool C.libxl_cpupoolinfo
+
+ ret := C.libxl_cpupool_info(Ctx.ctx, &c_cpupool, C.uint32_t(Poolid))
+ if ret != 0 {
+ err = Error(-ret)
+ return
+ }
+ defer C.libxl_cpupoolinfo_dispose(&c_cpupool)
+
+ pool = c_cpupool.CToGo()
+
+ return
+}
+
+// int libxl_cpupool_create(libxl_ctx *ctx, const char *name,
+// libxl_scheduler sched,
+// libxl_bitmap cpumap, libxl_uuid *uuid,
+// uint32_t *poolid);
+// FIXME: uuid
+// FIXME: Setting poolid
+func (Ctx *Context) CpupoolCreate(Name string, Scheduler Scheduler, Cpumap Bitmap) (err error, Poolid uint32) {
+ err = Ctx.CheckOpen()
+ if err != nil {
+ return
+ }
+
+ poolid := C.uint32_t(0)
+ name := C.CString(Name)
+ defer C.free(unsafe.Pointer(name))
+
+ // For now, just do what xl does, and make a new uuid every time we create the pool
+ var uuid C.libxl_uuid
+ C.libxl_uuid_generate(&uuid)
+
+ cbm := Cpumap.GoToC()
+ defer C.libxl_bitmap_dispose(&cbm)
+
+ ret := C.libxl_cpupool_create(Ctx.ctx, name, C.libxl_scheduler(Scheduler),
+ cbm, &uuid, &poolid)
+ if ret != 0 {
+ err = Error(-ret)
+ return
+ }
+
+ Poolid = uint32(poolid)
+
+ return
+}
+
+// int libxl_cpupool_destroy(libxl_ctx *ctx, uint32_t poolid);
+func (Ctx *Context) CpupoolDestroy(Poolid uint32) (err error) {
+ err = Ctx.CheckOpen()
+ if err != nil {
+ return
+ }
+
+ ret := C.libxl_cpupool_destroy(Ctx.ctx, C.uint32_t(Poolid))
+ if ret != 0 {
+ err = Error(-ret)
+ return
+ }
+
+ return
+}
+
+// int libxl_cpupool_cpuadd(libxl_ctx *ctx, uint32_t poolid, int cpu);
+func (Ctx *Context) CpupoolCpuadd(Poolid uint32, Cpu int) (err error) {
+ err = Ctx.CheckOpen()
+ if err != nil {
+ return
+ }
+
+ ret := C.libxl_cpupool_cpuadd(Ctx.ctx, C.uint32_t(Poolid), C.int(Cpu))
+ if ret != 0 {
+ err = Error(-ret)
+ return
+ }
+
+ return
+}
+
+// int libxl_cpupool_cpuadd_cpumap(libxl_ctx *ctx, uint32_t poolid,
+// const libxl_bitmap *cpumap);
+func (Ctx *Context) CpupoolCpuaddCpumap(Poolid uint32, Cpumap Bitmap) (err error) {
+ err = Ctx.CheckOpen()
+ if err != nil {
+ return
+ }
+
+ cbm := Cpumap.GoToC()
+ defer C.libxl_bitmap_dispose(&cbm)
+
+ ret := C.libxl_cpupool_cpuadd_cpumap(Ctx.ctx, C.uint32_t(Poolid), &cbm)
+ if ret != 0 {
+ err = Error(-ret)
+ return
+ }
+
+ return
+}
+
+// int libxl_cpupool_cpuremove(libxl_ctx *ctx, uint32_t poolid, int cpu);
+func (Ctx *Context) CpupoolCpuremove(Poolid uint32, Cpu int) (err error) {
+ err = Ctx.CheckOpen()
+ if err != nil {
+ return
+ }
+
+ ret := C.libxl_cpupool_cpuremove(Ctx.ctx, C.uint32_t(Poolid), C.int(Cpu))
+ if ret != 0 {
+ err = Error(-ret)
+ return
+ }
+
+ return
+}
+
+// int libxl_cpupool_cpuremove_cpumap(libxl_ctx *ctx, uint32_t poolid,
+// const libxl_bitmap *cpumap);
+func (Ctx *Context) CpupoolCpuremoveCpumap(Poolid uint32, Cpumap Bitmap) (err error) {
+ err = Ctx.CheckOpen()
+ if err != nil {
+ return
+ }
+
+ cbm := Cpumap.GoToC()
+ defer C.libxl_bitmap_dispose(&cbm)
+
+ ret := C.libxl_cpupool_cpuremove_cpumap(Ctx.ctx, C.uint32_t(Poolid), &cbm)
+ if ret != 0 {
+ err = Error(-ret)
+ return
+ }
+
+ return
+}
+
+// int libxl_cpupool_rename(libxl_ctx *ctx, const char *name, uint32_t poolid);
+// int libxl_cpupool_cpuadd_node(libxl_ctx *ctx, uint32_t poolid, int node, int *cpus);
+// int libxl_cpupool_cpuremove_node(libxl_ctx *ctx, uint32_t poolid, int node, int *cpus);
+// int libxl_cpupool_movedomain(libxl_ctx *ctx, uint32_t poolid, uint32_t domid);
+
+//
+// Utility functions
+//
+func (Ctx *Context) CpupoolFindByName(name string) (info CpupoolInfo, found bool) {
+ plist := Ctx.ListCpupool()
+
+ for i := range plist {
+ if plist[i].PoolName == name {
+ found = true
+ info = plist[i]
+ return
+ }
+ }
+ return
+}
+
+func (Ctx *Context) CpupoolMakeFree(Cpumap Bitmap) (err error) {
+ plist := Ctx.ListCpupool()
+
+ for i := range plist {
+ var Intersection Bitmap
+ Intersection = Cpumap.And(plist[i].Cpumap)
+ if !Intersection.IsEmpty() {
+ err = Ctx.CpupoolCpuremoveCpumap(plist[i].Poolid, Intersection)
+ if err != nil {
+ return
+ }
+ }
+ }
+ return
+}
+
/*
* Bitmap operations
*/
--
2.7.3
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