From 22fd1362126a96472a921d3767ca3220ab13da5a Mon Sep 17 00:00:00 2001 From: "Richard W.M. Jones" Date: Fri, 19 Oct 2007 13:21:43 +0100 Subject: Reorganised the code to put more utility functions into virt_top_utils. Added explicit interfaces for Virt_top_utils & Virt_top modules. Corrected use of endwin when _not_ in script mode. --- ChangeLog | 5 ++ virt-top/.depend | 16 +++-- virt-top/README | 4 +- virt-top/virt_top.ml | 159 ++++++-------------------------------------- virt-top/virt_top.mli | 36 ++++++++++ virt-top/virt_top_main.ml | 8 +-- virt-top/virt_top_utils.ml | 130 ++++++++++++++++++++++++++++++++++++ virt-top/virt_top_utils.mli | 54 +++++++++++++++ 8 files changed, 263 insertions(+), 149 deletions(-) create mode 100644 virt-top/virt_top.mli create mode 100644 virt-top/virt_top_utils.mli diff --git a/ChangeLog b/ChangeLog index a90e6e6..250a8dd 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,8 @@ +2007-10-19 Richard Jones + + * virt-top/virt_top_utils.mli, virt-top/virt_top.mli: Reorganise + the code and add some interfaces. + 2007-10-17 Richard Jones * virt-top/virt_top.ml: Added --script option. diff --git a/virt-top/.depend b/virt-top/.depend index 12f83ae..4a36b22 100644 --- a/virt-top/.depend +++ b/virt-top/.depend @@ -1,10 +1,14 @@ -virt_top_csv.cmo: virt_top.cmo +virt_top.cmi: ../libvirt/libvirt.cmi +virt_top_utils.cmi: ../libvirt/libvirt.cmi +virt_top_csv.cmo: virt_top.cmi virt_top_csv.cmx: virt_top.cmx -virt_top_main.cmo: virt_top.cmo ../libvirt/libvirt.cmi +virt_top_main.cmo: virt_top.cmi ../libvirt/libvirt.cmi virt_top_main.cmx: virt_top.cmx ../libvirt/libvirt.cmx -virt_top.cmo: virt_top_utils.cmo ../libvirt/libvirt_version.cmi \ - ../libvirt/libvirt.cmi +virt_top.cmo: virt_top_utils.cmi ../libvirt/libvirt_version.cmi \ + ../libvirt/libvirt.cmi virt_top.cmi virt_top.cmx: virt_top_utils.cmx ../libvirt/libvirt_version.cmx \ - ../libvirt/libvirt.cmx -virt_top_xml.cmo: virt_top.cmo ../libvirt/libvirt.cmi + ../libvirt/libvirt.cmx virt_top.cmi +virt_top_utils.cmo: ../libvirt/libvirt.cmi virt_top_utils.cmi +virt_top_utils.cmx: ../libvirt/libvirt.cmx virt_top_utils.cmi +virt_top_xml.cmo: virt_top.cmi ../libvirt/libvirt.cmi virt_top_xml.cmx: virt_top.cmx ../libvirt/libvirt.cmx diff --git a/virt-top/README b/virt-top/README index 86dfd02..f557c9b 100644 --- a/virt-top/README +++ b/virt-top/README @@ -1,11 +1,11 @@ The code is structured into these files: - virt_top_utils.ml + virt_top_utils.mli / virt_top_utils.ml String functions and other small utility functions. This is included directly into virt_top.ml. - virt_top.ml + virt_top.mli / virt_top.ml This is the virt-top program. diff --git a/virt-top/virt_top.ml b/virt-top/virt_top.ml index dc71a71..6047f8e 100644 --- a/virt-top/virt_top.ml +++ b/virt-top/virt_top.ml @@ -43,12 +43,6 @@ let csv_write : (string list -> unit) ref = fun _ -> () ) -(* Int64 operators for convenience. *) -let (+^) = Int64.add -let (-^) = Int64.sub -let ( *^ ) = Int64.mul -let (/^) = Int64.div - (* Sort order. *) type sort_order = | DomainID | DomainName | Processor | Memory | Time @@ -123,6 +117,11 @@ let csv_net = ref true let init_file = ref DefaultInitFile let script_mode = ref false +(* Tuple of never-changing data returned by start_up function. *) +type setup = + Libvirt.ro C.t * bool * bool * bool * C.node_info * string * + (int * int * int) + (* Function to read command line arguments and go into curses mode. *) let start_up () = (* Read command line arguments. *) @@ -278,54 +277,6 @@ OPTIONS" in node_info, hostname, libvirt_version (* info that doesn't change *) ) -(* Show a percentage in 4 chars. *) -let show_percent percent = - if percent <= 0. then " 0.0" - else if percent <= 9.9 then sprintf " %1.1f" percent - else if percent <= 99.9 then sprintf "%2.1f" percent - else "100 " - -(* Show an int64 option in 4 chars. *) -let rec show_int64_option = function - | None -> " " - | Some n -> show_int64 n -(* Show an int64 in 4 chars. *) -and show_int64 = function - | n when n < 0L -> "-!!!" - | n when n <= 9999L -> - sprintf "%4Ld" n - | n when n /^ 1024L <= 999L -> - sprintf "%3LdK" (n /^ 1024L) - | n when n /^ 1_048_576L <= 999L -> - sprintf "%3LdM" (n /^ 1_048_576L) - | n when n /^ 1_073_741_824L <= 999L -> - sprintf "%3LdG" (n /^ 1_073_741_824L) - | _ -> ">!!!" - -(* Format the total time (may be large!) in 9 chars. *) -let show_time ns = - let secs_in_ns = 1_000_000_000L in - let mins_in_ns = 60_000_000_000L in - let hours_in_ns = 3_600_000_000_000L in - - let hours = ns /^ hours_in_ns in - let ns = ns -^ (hours *^ hours_in_ns) in - let mins = ns /^ mins_in_ns in - let ns = ns -^ (mins *^ mins_in_ns) in - let secs = ns /^ secs_in_ns in - let ns = ns -^ (secs *^ secs_in_ns) in - let pennies = ns /^ 10_000_000L in - - if hours < 12L then - sprintf "%3Ld:%02Ld.%02Ld" (hours *^ 60L +^ mins) secs pennies - else if hours <= 999L then - sprintf "%3Ld:%02Ld:%02Ld" hours mins secs - else ( - let days = hours /^ 24L in - let hours = hours -^ (days *^ 24L) in - sprintf "%3Ldd%02Ld:%02Ld" days hours mins - ) - (* Show a domain state (the 'S' column). *) let show_state = function | D.InfoNoState -> '?' @@ -336,65 +287,6 @@ let show_state = function | D.InfoShutoff -> 'O' | D.InfoCrashed -> 'X' -(* Sum Domain.block_stats structures together. Missing fields - * get forced to 0. Empty list returns all 0. - *) -let zero_block_stats = - { D.rd_req = 0L; rd_bytes = 0L; wr_req = 0L; wr_bytes = 0L; errs = 0L } -let add_block_stats bs1 bs2 = - let add f1 f2 = if f1 >= 0L && f2 >= 0L then f1 +^ f2 else 0L in - { D.rd_req = add bs1.D.rd_req bs2.D.rd_req; - rd_bytes = add bs1.D.rd_bytes bs2.D.rd_bytes; - wr_req = add bs1.D.wr_req bs2.D.wr_req; - wr_bytes = add bs1.D.wr_bytes bs2.D.wr_bytes; - errs = add bs1.D.errs bs2.D.errs } -let sum_block_stats = - List.fold_left add_block_stats zero_block_stats - -(* Get the difference between two block_stats structures. Missing data - * forces the difference to -1. - *) -let diff_block_stats curr prev = - let sub f1 f2 = if f1 >= 0L && f2 >= 0L then f1 -^ f2 else -1L in - { D.rd_req = sub curr.D.rd_req prev.D.rd_req; - rd_bytes = sub curr.D.rd_bytes prev.D.rd_bytes; - wr_req = sub curr.D.wr_req prev.D.wr_req; - wr_bytes = sub curr.D.wr_bytes prev.D.wr_bytes; - errs = sub curr.D.errs prev.D.errs } - -(* Sum Domain.interface_stats structures together. Missing fields - * get forced to 0. Empty list returns all 0. - *) -let zero_interface_stats = - { D.rx_bytes = 0L; rx_packets = 0L; rx_errs = 0L; rx_drop = 0L; - tx_bytes = 0L; tx_packets = 0L; tx_errs = 0L; tx_drop = 0L } -let add_interface_stats is1 is2 = - let add f1 f2 = if f1 >= 0L && f2 >= 0L then f1 +^ f2 else 0L in - { D.rx_bytes = add is1.D.rx_bytes is2.D.rx_bytes; - rx_packets = add is1.D.rx_packets is2.D.rx_packets; - rx_errs = add is1.D.rx_errs is2.D.rx_errs; - rx_drop = add is1.D.rx_drop is2.D.rx_drop; - tx_bytes = add is1.D.tx_bytes is2.D.tx_bytes; - tx_packets = add is1.D.tx_packets is2.D.tx_packets; - tx_errs = add is1.D.tx_errs is2.D.tx_errs; - tx_drop = add is1.D.tx_drop is2.D.tx_drop } -let sum_interface_stats = - List.fold_left add_interface_stats zero_interface_stats - -(* Get the difference between two interface_stats structures. - * Missing data forces the difference to -1. - *) -let diff_interface_stats curr prev = - let sub f1 f2 = if f1 >= 0L && f2 >= 0L then f1 -^ f2 else -1L in - { D.rx_bytes = sub curr.D.rx_bytes prev.D.rx_bytes; - rx_packets = sub curr.D.rx_packets prev.D.rx_packets; - rx_errs = sub curr.D.rx_errs prev.D.rx_errs; - rx_drop = sub curr.D.rx_drop prev.D.rx_drop; - tx_bytes = sub curr.D.tx_bytes prev.D.tx_bytes; - tx_packets = sub curr.D.tx_packets prev.D.tx_packets; - tx_errs = sub curr.D.tx_errs prev.D.tx_errs; - tx_drop = sub curr.D.tx_drop prev.D.tx_drop } - (* Update the display and sleep for given number of seconds. *) let sleep n = refresh (); Unix.sleep n @@ -416,13 +308,6 @@ let get_string maxlen = Not_found -> str (* it is full maxlen bytes *) ) -(* Pad a string to the full width with spaces. If too long, truncate. *) -let pad width str = - let n = String.length str in - if n = width then str - else if n > width then String.sub str 0 width - else (* if n < width then *) str ^ String.make (width-n) ' ' - (* Line numbers. *) let top_lineno = 0 let summary_lineno = 1 (* this takes 2 lines *) @@ -913,16 +798,16 @@ let redraw = | (name, Active rd) :: doms -> if lineno < lines then ( let state = show_state rd.rd_info.D.state in - let rd_req = show_int64_option rd.rd_block_rd_reqs in - let wr_req = show_int64_option rd.rd_block_wr_reqs in - let rx_bytes = show_int64_option rd.rd_net_rx_bytes in - let tx_bytes = show_int64_option rd.rd_net_tx_bytes in - let percent_cpu = show_percent rd.rd_percent_cpu in + let rd_req = Show.int64_option rd.rd_block_rd_reqs in + let wr_req = Show.int64_option rd.rd_block_wr_reqs in + let rx_bytes = Show.int64_option rd.rd_net_rx_bytes in + let tx_bytes = Show.int64_option rd.rd_net_tx_bytes in + let percent_cpu = Show.percent rd.rd_percent_cpu in let percent_mem = 100L *^ rd.rd_info.D.memory /^ node_info.C.memory in let percent_mem = Int64.to_float percent_mem in - let percent_mem = show_percent percent_mem in - let time = show_time rd.rd_info.D.cpu_time in + let percent_mem = Show.percent percent_mem in + let time = Show.time rd.rd_info.D.cpu_time in let line = sprintf "%5d %c %s %s %s %s %s %s %s %s" rd.rd_domid state rd_req wr_req rx_bytes tx_bytes @@ -969,7 +854,7 @@ let redraw = mvaddstr (p+domains_lineno) 0 (sprintf "%4d " p); let cpu_time = pcpus_cpu_time.(p) in (* ns used on this CPU *) let percent_cpu = 100. *. cpu_time /. total_cpu_per_pcpu in - addstr (show_percent percent_cpu); + addstr (Show.percent percent_cpu); addch 32; List.iteri ( @@ -982,7 +867,7 @@ let redraw = else ( let t = Int64.to_float t in let percent = 100. *. t /. total_cpu_per_pcpu in - sprintf "%s%c%c " (show_percent percent) + sprintf "%s%c%c " (Show.percent percent) (if is_average then '=' else ' ') (if is_running then '#' else ' ') ) in @@ -1072,19 +957,19 @@ let redraw = let state = show_state rd.rd_info.D.state in let rx_bytes = if stats.D.rx_bytes >= 0L - then show_int64 stats.D.rx_bytes + then Show.int64 stats.D.rx_bytes else " " in let tx_bytes = if stats.D.tx_bytes >= 0L - then show_int64 stats.D.tx_bytes + then Show.int64 stats.D.tx_bytes else " " in let rx_packets = if stats.D.rx_packets >= 0L - then show_int64 stats.D.rx_packets + then Show.int64 stats.D.rx_packets else " " in let tx_packets = if stats.D.tx_packets >= 0L - then show_int64 stats.D.tx_packets + then Show.int64 stats.D.tx_packets else " " in let line = sprintf "%5d %c %s %s %s %s %-12s %s" @@ -1180,19 +1065,19 @@ let redraw = let state = show_state rd.rd_info.D.state in let rd_bytes = if stats.D.rd_bytes >= 0L - then show_int64 stats.D.rd_bytes + then Show.int64 stats.D.rd_bytes else " " in let wr_bytes = if stats.D.wr_bytes >= 0L - then show_int64 stats.D.wr_bytes + then Show.int64 stats.D.wr_bytes else " " in let rd_req = if stats.D.rd_req >= 0L - then show_int64 stats.D.rd_req + then Show.int64 stats.D.rd_req else " " in let wr_req = if stats.D.wr_req >= 0L - then show_int64 stats.D.wr_req + then Show.int64 stats.D.wr_req else " " in let line = sprintf "%5d %c %s %s %s %s %-12s %s" diff --git a/virt-top/virt_top.mli b/virt-top/virt_top.mli new file mode 100644 index 0000000..7b0ac3b --- /dev/null +++ b/virt-top/virt_top.mli @@ -0,0 +1,36 @@ +(* 'top'-like tool for libvirt domains. + (C) Copyright 2007 Richard W.M. Jones, Red Hat Inc. + http://libvirt.org/ + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. +*) + +(* Hooks for virt_top_xml to override (if present). *) +val parse_device_xml : + (int -> [ `R ] Libvirt.Domain.t -> string list * string list) ref + +(* Hooks for virt_top_csv to override (if present). *) +val csv_start : (string -> unit) ref +val csv_write : (string list -> unit) ref + +type setup = + Libvirt.ro Libvirt.Connect.t (* connection *) + * bool * bool * bool (* batch, script, csv modes *) + * Libvirt.Connect.node_info (* node_info *) + * string (* hostname *) + * (int * int * int) (* libvirt version *) + +val start_up : unit -> setup +val main_loop : setup -> unit diff --git a/virt-top/virt_top_main.ml b/virt-top/virt_top_main.ml index cb3486e..ba98e7e 100644 --- a/virt-top/virt_top_main.ml +++ b/virt-top/virt_top_main.ml @@ -30,19 +30,19 @@ open Virt_top * the program under --debug ...). *) let error = - let setup = start_up () in + let ((_, _, script_mode, _, _, _, _) as setup) = start_up () in try main_loop setup; - if !script_mode then endwin (); + if not script_mode then endwin (); false with | Libvirt.Virterror err -> - endwin (); + if not script_mode then endwin (); prerr_endline (Libvirt.Virterror.to_string err); true | exn -> - endwin (); + if not script_mode then endwin (); prerr_endline ("Error: " ^ Printexc.to_string exn); true diff --git a/virt-top/virt_top_utils.ml b/virt-top/virt_top_utils.ml index e92d150..53c9bf1 100644 --- a/virt-top/virt_top_utils.ml +++ b/virt-top/virt_top_utils.ml @@ -15,10 +15,24 @@ You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + + This file contains utility functions. *) +open Printf + +module C = Libvirt.Connect +module D = Libvirt.Domain +module N = Libvirt.Network + let (//) = Filename.concat +(* Int64 operators for convenience. *) +let (+^) = Int64.add +let (-^) = Int64.sub +let ( *^ ) = Int64.mul +let (/^) = Int64.div + (* Input a whole file as a list of lines. *) let input_all_lines chan = let lines = ref [] in @@ -87,3 +101,119 @@ let read_config_file filename = let key, value = ExtString.String.split line " " in lineno, trim key, trim value ) lines + +(* Pad a string to the full width with spaces. If too long, truncate. *) +let pad width str = + let n = String.length str in + if n = width then str + else if n > width then String.sub str 0 width + else (* if n < width then *) str ^ String.make (width-n) ' ' + +module Show = struct + (* Show a percentage in 4 chars. *) + let percent percent = + if percent <= 0. then " 0.0" + else if percent <= 9.9 then sprintf " %1.1f" percent + else if percent <= 99.9 then sprintf "%2.1f" percent + else "100 " + + (* Show an int64 option in 4 chars. *) + let rec int64_option = function + | None -> " " + | Some n -> int64 n + (* Show an int64 in 4 chars. *) + and int64 = function + | n when n < 0L -> "-!!!" + | n when n <= 9999L -> + sprintf "%4Ld" n + | n when n /^ 1024L <= 999L -> + sprintf "%3LdK" (n /^ 1024L) + | n when n /^ 1_048_576L <= 999L -> + sprintf "%3LdM" (n /^ 1_048_576L) + | n when n /^ 1_073_741_824L <= 999L -> + sprintf "%3LdG" (n /^ 1_073_741_824L) + | _ -> ">!!!" + + (* Format the total time (may be large!) in 9 chars. *) + let time ns = + let secs_in_ns = 1_000_000_000L in + let mins_in_ns = 60_000_000_000L in + let hours_in_ns = 3_600_000_000_000L in + + let hours = ns /^ hours_in_ns in + let ns = ns -^ (hours *^ hours_in_ns) in + let mins = ns /^ mins_in_ns in + let ns = ns -^ (mins *^ mins_in_ns) in + let secs = ns /^ secs_in_ns in + let ns = ns -^ (secs *^ secs_in_ns) in + let pennies = ns /^ 10_000_000L in + + if hours < 12L then + sprintf "%3Ld:%02Ld.%02Ld" (hours *^ 60L +^ mins) secs pennies + else if hours <= 999L then + sprintf "%3Ld:%02Ld:%02Ld" hours mins secs + else ( + let days = hours /^ 24L in + let hours = hours -^ (days *^ 24L) in + sprintf "%3Ldd%02Ld:%02Ld" days hours mins + ) +end + +(* Sum Domain.block_stats structures together. Missing fields + * get forced to 0. Empty list returns all 0. + *) +let zero_block_stats = + { D.rd_req = 0L; rd_bytes = 0L; wr_req = 0L; wr_bytes = 0L; errs = 0L } +let add_block_stats bs1 bs2 = + let add f1 f2 = if f1 >= 0L && f2 >= 0L then f1 +^ f2 else 0L in + { D.rd_req = add bs1.D.rd_req bs2.D.rd_req; + rd_bytes = add bs1.D.rd_bytes bs2.D.rd_bytes; + wr_req = add bs1.D.wr_req bs2.D.wr_req; + wr_bytes = add bs1.D.wr_bytes bs2.D.wr_bytes; + errs = add bs1.D.errs bs2.D.errs } +let sum_block_stats = + List.fold_left add_block_stats zero_block_stats + +(* Get the difference between two block_stats structures. Missing data + * forces the difference to -1. + *) +let diff_block_stats curr prev = + let sub f1 f2 = if f1 >= 0L && f2 >= 0L then f1 -^ f2 else -1L in + { D.rd_req = sub curr.D.rd_req prev.D.rd_req; + rd_bytes = sub curr.D.rd_bytes prev.D.rd_bytes; + wr_req = sub curr.D.wr_req prev.D.wr_req; + wr_bytes = sub curr.D.wr_bytes prev.D.wr_bytes; + errs = sub curr.D.errs prev.D.errs } + +(* Sum Domain.interface_stats structures together. Missing fields + * get forced to 0. Empty list returns all 0. + *) +let zero_interface_stats = + { D.rx_bytes = 0L; rx_packets = 0L; rx_errs = 0L; rx_drop = 0L; + tx_bytes = 0L; tx_packets = 0L; tx_errs = 0L; tx_drop = 0L } +let add_interface_stats is1 is2 = + let add f1 f2 = if f1 >= 0L && f2 >= 0L then f1 +^ f2 else 0L in + { D.rx_bytes = add is1.D.rx_bytes is2.D.rx_bytes; + rx_packets = add is1.D.rx_packets is2.D.rx_packets; + rx_errs = add is1.D.rx_errs is2.D.rx_errs; + rx_drop = add is1.D.rx_drop is2.D.rx_drop; + tx_bytes = add is1.D.tx_bytes is2.D.tx_bytes; + tx_packets = add is1.D.tx_packets is2.D.tx_packets; + tx_errs = add is1.D.tx_errs is2.D.tx_errs; + tx_drop = add is1.D.tx_drop is2.D.tx_drop } +let sum_interface_stats = + List.fold_left add_interface_stats zero_interface_stats + +(* Get the difference between two interface_stats structures. + * Missing data forces the difference to -1. + *) +let diff_interface_stats curr prev = + let sub f1 f2 = if f1 >= 0L && f2 >= 0L then f1 -^ f2 else -1L in + { D.rx_bytes = sub curr.D.rx_bytes prev.D.rx_bytes; + rx_packets = sub curr.D.rx_packets prev.D.rx_packets; + rx_errs = sub curr.D.rx_errs prev.D.rx_errs; + rx_drop = sub curr.D.rx_drop prev.D.rx_drop; + tx_bytes = sub curr.D.tx_bytes prev.D.tx_bytes; + tx_packets = sub curr.D.tx_packets prev.D.tx_packets; + tx_errs = sub curr.D.tx_errs prev.D.tx_errs; + tx_drop = sub curr.D.tx_drop prev.D.tx_drop } diff --git a/virt-top/virt_top_utils.mli b/virt-top/virt_top_utils.mli new file mode 100644 index 0000000..9cce00e --- /dev/null +++ b/virt-top/virt_top_utils.mli @@ -0,0 +1,54 @@ +(* 'top'-like tool for libvirt domains. + (C) Copyright 2007 Richard W.M. Jones, Red Hat Inc. + http://libvirt.org/ + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + + This file contains utility functions. +*) + +(* Filename concatenation. *) +val (//) : string -> string -> string + +(* Read a configuration file as a list of (lineno, key, value) pairs. + * If the config file is missing this returns an empty list. + *) +val read_config_file : string -> (int * string * string) list + +(* Pad or truncate a string to a fixed width. *) +val pad : int -> string -> string + +(* Int64 operators for convenience. *) +val (+^) : int64 -> int64 -> int64 +val (-^) : int64 -> int64 -> int64 +val ( *^ ) : int64 -> int64 -> int64 +val (/^) : int64 -> int64 -> int64 + +(* Utility functions for formating numbers as short strings. *) +module Show : sig + val percent : float -> string + val int64_option : int64 option -> string + val int64 : int64 -> string + val time : int64 -> string +end + +(* Helpers for manipulating block_stats & interface_stats. *) +open Libvirt.Domain + +val sum_block_stats : block_stats list -> block_stats +val diff_block_stats : block_stats -> block_stats -> block_stats + +val sum_interface_stats : interface_stats list -> interface_stats +val diff_interface_stats : interface_stats -> interface_stats -> interface_stats -- cgit