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authorEXetoC <exetoc@gmail.com>2014-03-06 02:46:31 +0100
committerEXetoC <exetoc@gmail.com>2014-03-06 02:46:31 +0100
commitd1bc6cf0981eddf283515c2d77bccca76abff99f (patch)
treeac28e32bd6143c7a06c44dbea632f28f65ea3d20 /compiler/parser.nim
parent853bdbf4948db7774bc3caf74f67ba1228f65016 (diff)
parent7904446c47f952a026d408f04431dbaf6d887b37 (diff)
downloadNim-d1bc6cf0981eddf283515c2d77bccca76abff99f.tar.gz
Merge branch 'devel' into alloc-overloads
Diffstat (limited to 'compiler/parser.nim')
-rw-r--r--compiler/parser.nim2


1 files changed, 1 insertions, 1 deletions
diff --git a/compiler/parser.nim b/compiler/parser.nim
index ff3324b47..5a5bfb574 100644
--- a/compiler/parser.nim
+++ b/compiler/parser.nim
@@ -281,7 +281,7 @@ proc parseSymbol(p: var TParser): PNode =
         add(result, newIdentNodeP(getIdent"{}", p))
         getTok(p)
         eat(p, tkCurlyRi)
-      of tokKeywordLow..tokKeywordHigh, tkSymbol, tkOpr, tkDotDot:
+      of tokKeywordLow..tokKeywordHigh, tkSymbol, tkOpr, tkDot, tkDotDot:
         add(result, newIdentNodeP(p.tok.ident, p))
         getTok(p)
       of tkIntLit..tkCharLit:

 

generated by cgit-pink 1.4.1-2-gfad0 (git 2.36.2.497.gbbea4dcf42) at 2025-05-21 23:11:45 +0000


 


bheading */
.highlight .gt { color: #aa0000 } /* Generic.Traceback */
.highlight .kc { color: #008800; font-weight: bold } /* Keyword.Constant */
.highlight .kd { color: #008800; font-weight: bold } /* Keyword.Declaration */
.highlight .kn { color: #008800; font-weight: bold } /* Keyword.Namespace */
.highlight .kp { color: #008800 } /* Keyword.Pseudo */
.highlight .kr { color: #008800; font-weight: bold } /* Keyword.Reserved */
.highlight .kt { color: #888888; font-weight: bold } /* Keyword.Type */
.highlight .m { color: #0000DD; font-weight: bold } /* Literal.Number */
.highlight .s { color: #dd2200; background-color: #fff0f0 } /* Literal.String */
.highlight .na { color: #336699 } /* Name.Attribute */
.highlight .nb { color: #003388 } /* Name.Builtin */
.highlight .nc { color: #bb0066; font-weight: bold } /* Name.Class */
.highlight .no { color: #003366; font-weight: bold } /* Name.Constant */
.highlight .nd { color: #555555 } /* Name.Decorator */
.highlight .ne { color: #bb0066; font-weight: bold } /* Name.Exception */
.highlight .nf { color: #0066bb; font-weight: bold } /* Name.Function */
.highlight .nl { color: #336699; font-style: italic } /* Name.Label */
.highlight .nn { color: #bb0066; font-weight: bold } /* Name.Namespace */
.highlight .py { color: #336699; font-weight: bold } /* Name.Property */
.highlight .nt { color: #bb0066; font-weight: bold } /* Name.Tag */
.highlight .nv { color: #336699 } /* Name.Variable */
.highlight .ow { color: #008800 } /* Operator.Word */
.highlight .w { color: #bbbbbb } /* Text.Whitespace */
.highlight .mb { color: #0000DD; font-weight: bold } /* Literal.Number.Bin */
.highlight .mf { color: #0000DD; font-weight: bold } /* Literal.Number.Float */
.highlight .mh { color: #0000DD; font-weight: bold } /* Literal.Number.Hex */
.highlight .mi { color: #0000DD; font-weight: bold } /* Literal.Number.Integer */
.highlight .mo { color: #0000DD; font-weight: bold } /* Literal.Number.Oct */
.highlight .sa { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Affix */
.highlight .sb { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Backtick */
.highlight .sc { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Char */
.highlight .dl { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Delimiter */
.highlight .sd { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Doc */
.highlight .s2 { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Double */
.highlight .se { color: #0044dd; background-color: #fff0f0 } /* Literal.String.Escape */
.highlight .sh { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Heredoc */
.highlight .si { color: #3333bb; background-color: #fff0f0 } /* Literal.String.Interpol */
.highlight .sx { color: #22bb22; background-color: #f0fff0 } /* Literal.String.Other */
.highlight .sr { color: #008800; background-color: #fff0ff } /* Literal.String.Regex */
.highlight .s1 { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Single */
.highlight .ss { color: #aa6600; background-color: #fff0f0 } /* Literal.String.Symbol */
.highlight .bp { color: #003388 } /* Name.Builtin.Pseudo */
.highlight .fm { color: #0066bb; font-weight: bold } /* Name.Function.Magic */
.highlight .vc { color: #336699 } /* Name.Variable.Class */
.highlight .vg { color: #dd7700 } /* Name.Variable.Global */
.highlight .vi { color: #3333bb } /* Name.Variable.Instance */
.highlight .vm { color: #336699 } /* Name.Variable.Magic */
.highlight .il { color: #0000DD; font-weight: bold } /* Literal.Number.Integer.Long */
#
#
#            Nim's Runtime Library
#        (c) Copyright 2015 Andreas Rumpf
#
#    See the file "copying.txt", included in this
#    distribution, for details about the copyright.
#

## This module implements a helper for a thread pool to determine whether
## creating a thread is a good idea.

when defined(windows):
  import winlean, os, strutils, math

  proc `-`(a, b: TFILETIME): int64 = a.rdFileTime - b.rdFileTime
elif defined(linux):
  from cpuinfo import countProcessors

type
  ThreadPoolAdvice* = enum
    doNothing,
    doCreateThread,  # create additional thread for throughput
    doShutdownThread # too many threads are busy, shutdown one

  ThreadPoolState* = object
    when defined(windows):
      prevSysKernel, prevSysUser, prevProcKernel, prevProcUser: TFILETIME
    calls*: int

proc advice*(s: var ThreadPoolState): ThreadPoolAdvice =
  when defined(windows):
    var
      sysIdle, sysKernel, sysUser,
        procCreation, procExit, procKernel, procUser: TFILETIME
    if getSystemTimes(sysIdle, sysKernel, sysUser) == 0 or
        getProcessTimes(THandle(-1), procCreation, procExit, 
                        procKernel, procUser) == 0:
      return doNothing
    if s.calls > 0:
      let
        sysKernelDiff = sysKernel - s.prevSysKernel
        sysUserDiff = sysUser - s.prevSysUser

        procKernelDiff = procKernel - s.prevProcKernel
        procUserDiff = procUser - s.prevProcUser

        sysTotal = int(sysKernelDiff + sysUserDiff)
        procTotal = int(procKernelDiff + procUserDiff)
      # total CPU usage < 85% --> create a new worker thread.
      # Measurements show that 100% and often even 90% is not reached even
      # if all my cores are busy.
      if sysTotal == 0 or procTotal / sysTotal < 0.85:
        result = doCreateThread
    s.prevSysKernel = sysKernel
    s.prevSysUser = sysUser
    s.prevProcKernel = procKernel
    s.prevProcUser = procUser
  elif defined(linux):
    proc fscanf(c: File, frmt: cstring) {.varargs, importc, 
      header: "<stdio.h>".}

    var f = open("/proc/loadavg")
    var b: float
    var busy, total: int
    fscanf(f,"%lf %lf %lf %ld/%ld",
           addr b, addr b, addr b, addr busy, addr total)
    f.close()
    let cpus = countProcessors()
    if busy-1 < cpus:
      result = doCreateThread
    elif busy-1 >= cpus*2:
      result = doShutdownThread
    else:
      result = doNothing
  else:
    # XXX implement this for other OSes
    result = doNothing
  inc s.calls

when not defined(testing) and isMainModule:
  proc busyLoop() =
    while true:
      discard random(80)
      os.sleep(100)

  spawn busyLoop()
  spawn busyLoop()
  spawn busyLoop()
  spawn busyLoop()

  var s: ThreadPoolState

  for i in 1 .. 70:
    echo advice(s)
    os.sleep(1000)



 

generated by cgit-pink 1.4.1-2-gfad0 (git 2.36.2.497.gbbea4dcf42) at 2025-05-21 23:11:45 +0000