sysinfo.jl
# This file is a part of Julia. License is MIT: http://julialang.org/license
module Sys
export CPU_CORES,
OS_NAME,
WORD_SIZE,
ARCH,
MACHINE,
cpu_info,
cpu_name,
cpu_summary,
uptime,
loadavg,
free_memory,
total_memory
import ..Base: WORD_SIZE, OS_NAME, ARCH, MACHINE
import ..Base: show, uv_error
global CPU_CORES
function __init__()
# set CPU core count
global const CPU_CORES =
haskey(ENV,"JULIA_CPU_CORES") ? parse(Int,ENV["JULIA_CPU_CORES"]) :
Int(ccall(:jl_cpu_cores, Int32, ()))
global const SC_CLK_TCK = ccall(:jl_SC_CLK_TCK, Clong, ())
global const cpu_name = ccall(:jl_get_cpu_name, Any, ())::ByteString
end
type UV_cpu_info_t
model::Ptr{UInt8}
speed::Int32
cpu_times!user::UInt64
cpu_times!nice::UInt64
cpu_times!sys::UInt64
cpu_times!idle::UInt64
cpu_times!irq::UInt64
end
type CPUinfo
model::ASCIIString
speed::Int32
cpu_times!user::UInt64
cpu_times!nice::UInt64
cpu_times!sys::UInt64
cpu_times!idle::UInt64
cpu_times!irq::UInt64
CPUinfo(model,speed,u,n,s,id,ir)=new(model,speed,u,n,s,id,ir)
end
CPUinfo(info::UV_cpu_info_t) = CPUinfo(bytestring(info.model), info.speed,
info.cpu_times!user, info.cpu_times!nice, info.cpu_times!sys,
info.cpu_times!idle, info.cpu_times!irq)
function show(io::IO, info::CPUinfo, header::Bool=true, prefix::AbstractString=" ")
tck = SC_CLK_TCK
if header
println(io, info.model, ": ")
print(io, " "^length(prefix))
if tck > 0
@printf io " %5s %9s %9s %9s %9s %9s\n" "speed" "user" "nice" "sys" "idle" "irq"
else
@printf io " %5s %9s %9s %9s %9s %9s ticks\n" "speed" "user" "nice" "sys" "idle" "irq"
end
end
print(io, prefix)
if tck > 0
@printf io "%5d MHz %9d s %9d s %9d s %9d s %9d s" info.speed info.cpu_times!user/tck info.cpu_times!nice/tck info.cpu_times!sys/tck info.cpu_times!idle/tck info.cpu_times!irq/tck
else
@printf io "%5d MHz %9d %9d %9d %9d %9d ticks" info.speed info.cpu_times!user info.cpu_times!nice info.cpu_times!sys info.cpu_times!idle info.cpu_times!irq
end
end
function _cpu_summary(io::IO, cpu::Array{CPUinfo}, i, j)
if j-i < 9
header = true
for x = i:j
if header == false println(io) end
show(io,cpu[x],header,"#$(x-i+1) ")
header = false
end
else
summary = CPUinfo(cpu[i].model,0,0,0,0,0,0)
count = j-i+1
for x = i:j
summary.speed += cpu[i].speed
summary.cpu_times!user += cpu[x].cpu_times!user
summary.cpu_times!nice += cpu[x].cpu_times!nice
summary.cpu_times!sys += cpu[x].cpu_times!sys
summary.cpu_times!idle += cpu[x].cpu_times!idle
summary.cpu_times!irq += cpu[x].cpu_times!irq
end
summary.speed = div(summary.speed,count)
show(io,summary,true,"#1-$(count) ")
end
println(io)
end
function cpu_summary(io::IO=STDOUT, cpu::Array{CPUinfo}=cpu_info())
model = cpu[1].model
first = 1
for i = 2:length(cpu)
if model != cpu[i].model
_cpu_summary(io,cpu,first,i-1)
first = i
end
end
_cpu_summary(io,cpu,first,length(cpu))
end
function cpu_info()
UVcpus = Array(Ptr{UV_cpu_info_t},1)
count = Array(Int32,1)
uv_error("uv_cpu_info",ccall(:uv_cpu_info, Int32, (Ptr{Ptr{UV_cpu_info_t}}, Ptr{Int32}), UVcpus, count))
cpus = Array(CPUinfo,count[1])
for i = 1:length(cpus)
cpus[i] = CPUinfo(unsafe_load(UVcpus[1],i))
end
ccall(:uv_free_cpu_info, Void, (Ptr{UV_cpu_info_t}, Int32), UVcpus[1], count[1])
return cpus
end
function uptime()
uptime_ = Array(Float64,1)
uv_error("uv_uptime",ccall(:uv_uptime, Int32, (Ptr{Float64},), uptime_))
return uptime_[1]
end
function loadavg()
loadavg_ = Array(Float64,3)
ccall(:uv_loadavg, Void, (Ptr{Float64},), loadavg_)
return loadavg_
end
free_memory() = ccall(:uv_get_free_memory, UInt64, ())
total_memory() = ccall(:uv_get_total_memory, UInt64, ())
function get_process_title()
buf = zeros(UInt8, 512)
err = ccall(:uv_get_process_title, Cint, (Ptr{UInt8}, Cint), buf, 512)
uv_error("get_process_title", err)
return bytestring(pointer(buf))
end
function set_process_title(title::AbstractString)
err = ccall(:uv_set_process_title, Cint, (Cstring,), title)
uv_error("set_process_title", err)
end
maxrss() = ccall(:jl_maxrss, Csize_t, ())
end # module Sys