mirror of
https://github.com/xen-project/xen.git
synced 2026-10-29 02:30:03 +01:00
Christian Lindig
6230dde2ed
Commit 81946a73dc removed
Xenctrl.with_intf based on its undesirable behaviour of opening and
closing a Xenctrl connection with every invocation. This commit
re-introduces with_intf but with an updated behaviour: it maintains a
global Xenctrl connection which is opened upon first usage and kept
open. This handle can be obtained by clients using new functions
get_handle() and close_handle().
The main motivation of re-introducing with_intf is that otherwise
clients will have to implement this functionality individually.
Signed-off-by: Christian Lindig <christian.lindig@citrix.com>
Reviewed-by: Ian Jackson <ian.jackson@eu.citrix.com>
289 lines
8.3 KiB
OCaml
289 lines
8.3 KiB
OCaml
(*
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* Copyright (C) 2006-2007 XenSource Ltd.
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* Copyright (C) 2008 Citrix Ltd.
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* Author Vincent Hanquez <vincent.hanquez@eu.citrix.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published
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* by the Free Software Foundation; version 2.1 only. with the special
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* exception on linking described in file LICENSE.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*)
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(** *)
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type domid = int
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(* ** xenctrl.h ** *)
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type vcpuinfo =
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{
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online: bool;
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blocked: bool;
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running: bool;
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cputime: int64;
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cpumap: int32;
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}
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type xen_arm_arch_domainconfig =
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{
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gic_version: int;
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nr_spis: int;
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clock_frequency: int32;
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}
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type x86_arch_emulation_flags =
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| X86_EMU_LAPIC
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| X86_EMU_HPET
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| X86_EMU_PM
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| X86_EMU_RTC
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| X86_EMU_IOAPIC
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| X86_EMU_PIC
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| X86_EMU_VGA
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| X86_EMU_IOMMU
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| X86_EMU_PIT
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| X86_EMU_USE_PIRQ
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type xen_x86_arch_domainconfig =
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{
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emulation_flags: x86_arch_emulation_flags list;
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}
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type arch_domainconfig =
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| ARM of xen_arm_arch_domainconfig
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| X86 of xen_x86_arch_domainconfig
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type domain_create_flag = CDF_HVM | CDF_HAP
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type domctl_create_config =
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{
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ssidref: int32;
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handle: string;
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flags: domain_create_flag list;
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max_vcpus: int;
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max_evtchn_port: int;
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max_grant_frames: int;
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max_maptrack_frames: int;
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arch: arch_domainconfig;
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}
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type domaininfo =
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{
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domid : domid;
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dying : bool;
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shutdown : bool;
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paused : bool;
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blocked : bool;
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running : bool;
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hvm_guest : bool;
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shutdown_code : int;
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total_memory_pages: nativeint;
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max_memory_pages : nativeint;
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shared_info_frame : int64;
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cpu_time : int64;
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nr_online_vcpus : int;
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max_vcpu_id : int;
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ssidref : int32;
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handle : int array;
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arch_config : arch_domainconfig;
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}
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type sched_control =
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{
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weight : int;
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cap : int;
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}
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type physinfo_cap_flag =
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| CAP_HVM
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| CAP_DirectIO
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type physinfo =
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{
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threads_per_core : int;
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cores_per_socket : int;
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nr_cpus : int;
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max_node_id : int;
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cpu_khz : int;
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total_pages : nativeint;
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free_pages : nativeint;
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scrub_pages : nativeint;
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(* XXX hw_cap *)
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capabilities : physinfo_cap_flag list;
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max_nr_cpus : int;
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}
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type version =
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{
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major : int;
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minor : int;
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extra : string;
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}
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type compile_info =
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{
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compiler : string;
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compile_by : string;
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compile_domain : string;
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compile_date : string;
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}
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type shutdown_reason = Poweroff | Reboot | Suspend | Crash | Watchdog | Soft_reset
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exception Error of string
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type handle
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external interface_open: unit -> handle = "stub_xc_interface_open"
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external interface_close: handle -> unit = "stub_xc_interface_close"
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let handle = ref None
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let get_handle () = !handle
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let close_handle () =
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match !handle with
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| Some h -> handle := None; interface_close h
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| None -> ()
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let with_intf f =
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match !handle with
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| Some h -> f h
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| None ->
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let h =
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try interface_open () with
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| e ->
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let msg = Printexc.to_string e in
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failwith ("failed to open xenctrl: "^msg)
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in
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handle := Some h;
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f h
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external domain_create: handle -> domctl_create_config -> domid
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= "stub_xc_domain_create"
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external domain_sethandle: handle -> domid -> string -> unit
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= "stub_xc_domain_sethandle"
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external domain_max_vcpus: handle -> domid -> int -> unit
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= "stub_xc_domain_max_vcpus"
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external domain_pause: handle -> domid -> unit = "stub_xc_domain_pause"
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external domain_unpause: handle -> domid -> unit = "stub_xc_domain_unpause"
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external domain_resume_fast: handle -> domid -> unit = "stub_xc_domain_resume_fast"
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external domain_destroy: handle -> domid -> unit = "stub_xc_domain_destroy"
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external domain_shutdown: handle -> domid -> shutdown_reason -> unit
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= "stub_xc_domain_shutdown"
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external _domain_getinfolist: handle -> domid -> int -> domaininfo list
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= "stub_xc_domain_getinfolist"
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let domain_getinfolist handle first_domain =
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let nb = 2 in
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let last_domid l = (List.hd l).domid + 1 in
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let rec __getlist from =
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let l = _domain_getinfolist handle from nb in
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(if List.length l = nb then __getlist (last_domid l) else []) @ l
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in
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List.rev (__getlist first_domain)
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external domain_getinfo: handle -> domid -> domaininfo= "stub_xc_domain_getinfo"
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external domain_get_vcpuinfo: handle -> int -> int -> vcpuinfo
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= "stub_xc_vcpu_getinfo"
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external domain_ioport_permission: handle -> domid -> int -> int -> bool -> unit
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= "stub_xc_domain_ioport_permission"
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external domain_iomem_permission: handle -> domid -> nativeint -> nativeint -> bool -> unit
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= "stub_xc_domain_iomem_permission"
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external domain_irq_permission: handle -> domid -> int -> bool -> unit
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= "stub_xc_domain_irq_permission"
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external vcpu_affinity_set: handle -> domid -> int -> bool array -> unit
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= "stub_xc_vcpu_setaffinity"
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external vcpu_affinity_get: handle -> domid -> int -> bool array
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= "stub_xc_vcpu_getaffinity"
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external vcpu_context_get: handle -> domid -> int -> string
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= "stub_xc_vcpu_context_get"
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external sched_id: handle -> int = "stub_xc_sched_id"
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external sched_credit_domain_set: handle -> domid -> sched_control -> unit
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= "stub_sched_credit_domain_set"
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external sched_credit_domain_get: handle -> domid -> sched_control
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= "stub_sched_credit_domain_get"
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external shadow_allocation_set: handle -> domid -> int -> unit
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= "stub_shadow_allocation_set"
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external shadow_allocation_get: handle -> domid -> int
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= "stub_shadow_allocation_get"
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external evtchn_alloc_unbound: handle -> domid -> domid -> int
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= "stub_xc_evtchn_alloc_unbound"
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external evtchn_reset: handle -> domid -> unit = "stub_xc_evtchn_reset"
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external readconsolering: handle -> string = "stub_xc_readconsolering"
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external send_debug_keys: handle -> string -> unit = "stub_xc_send_debug_keys"
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external physinfo: handle -> physinfo = "stub_xc_physinfo"
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external pcpu_info: handle -> int -> int64 array = "stub_xc_pcpu_info"
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external domain_setmaxmem: handle -> domid -> int64 -> unit
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= "stub_xc_domain_setmaxmem"
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external domain_set_memmap_limit: handle -> domid -> int64 -> unit
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= "stub_xc_domain_set_memmap_limit"
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external domain_memory_increase_reservation: handle -> domid -> int64 -> unit
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= "stub_xc_domain_memory_increase_reservation"
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external domain_set_machine_address_size: handle -> domid -> int -> unit
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= "stub_xc_domain_set_machine_address_size"
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external domain_get_machine_address_size: handle -> domid -> int
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= "stub_xc_domain_get_machine_address_size"
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external domain_cpuid_set: handle -> domid -> (int64 * (int64 option))
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-> string option array
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-> string option array
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= "stub_xc_domain_cpuid_set"
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external domain_cpuid_apply_policy: handle -> domid -> unit
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= "stub_xc_domain_cpuid_apply_policy"
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external map_foreign_range: handle -> domid -> int
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-> nativeint -> Xenmmap.mmap_interface
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= "stub_map_foreign_range"
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external domain_assign_device: handle -> domid -> (int * int * int * int) -> unit
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= "stub_xc_domain_assign_device"
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external domain_deassign_device: handle -> domid -> (int * int * int * int) -> unit
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= "stub_xc_domain_deassign_device"
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external domain_test_assign_device: handle -> domid -> (int * int * int * int) -> bool
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= "stub_xc_domain_test_assign_device"
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external version: handle -> version = "stub_xc_version_version"
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external version_compile_info: handle -> compile_info
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= "stub_xc_version_compile_info"
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external version_changeset: handle -> string = "stub_xc_version_changeset"
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external version_capabilities: handle -> string =
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"stub_xc_version_capabilities"
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type featureset_index = Featureset_raw | Featureset_host | Featureset_pv | Featureset_hvm
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external get_cpu_featureset : handle -> featureset_index -> int64 array = "stub_xc_get_cpu_featureset"
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external watchdog : handle -> int -> int32 -> int
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= "stub_xc_watchdog"
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(* ** Misc ** *)
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(**
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Convert the given number of pages to an amount in KiB, rounded up.
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*)
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external pages_to_kib : int64 -> int64 = "stub_pages_to_kib"
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let pages_to_mib pages = Int64.div (pages_to_kib pages) 1024L
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let _ = Callback.register_exception "xc.error" (Error "register_callback")
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