Class: Baykit::BayServer::Util::SysUtil

Inherits:
Object
  • Object
show all
Defined in:
lib/baykit/bayserver/util/sys_util.rb

Class Method Summary collapse

Class Method Details

.pid ⇒ Object 



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# File 'lib/baykit/bayserver/util/sys_util.rb', line 123

def SysUtil.pid()
  return $$
end

.processor_count ⇒ Object 



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# File 'lib/baykit/bayserver/util/sys_util.rb', line 127

def SysUtil.processor_count()
  return Etc.nprocessors
end

.run_on_rubymine ⇒ Object

We set environment variable “RUBYMINE” to 1 for debugging



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# File 'lib/baykit/bayserver/util/sys_util.rb', line 20

def SysUtil.run_on_rubymine()
  return ENV["RUBYMINE"] == "1"
end

.run_on_windows ⇒ Object 



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# File 'lib/baykit/bayserver/util/sys_util.rb', line 13

def SysUtil.run_on_windows()
  return RUBY_PLATFORM.downcase =~ /mswin(?!ce)|mingw|cygwin|bccwin/
end

.support_fork ⇒ Object 



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# File 'lib/baykit/bayserver/util/sys_util.rb', line 24

def SysUtil.support_fork()
  begin
    pid = fork()
    if pid == nil
      exit(0)
    end
    Process.waitpid(pid)
    return true
  rescue NotImplementedError => e
    if BayLog.debug_mode
      BayLog.warn("fork() failed: %s ", e)
      #BayLog.warn_e(e)
    end
    return false
  end
end

.support_nonblock_file_read ⇒ Object 



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# File 'lib/baykit/bayserver/util/sys_util.rb', line 58

def SysUtil.support_nonblock_file_read()
  File.open(BayServer.bserv_plan) do |f|
    begin
      f.read_nonblock(1)
      return true
    rescue SystemCallError => e
      if BayLog.debug_mode
        BayLog.warn("read_nonblock() failed: %s", e)
        #BayLog.warn_e(e)
      end
      return false
    end
  end
end

.support_nonblock_file_write ⇒ Object 



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# File 'lib/baykit/bayserver/util/sys_util.rb', line 73

def SysUtil.support_nonblock_file_write()
  Dir.mktmpdir() do |dir|
    File.open(Pathname(dir) + "test_file", "wb") do |f|
      begin
        f.write_nonblock(1)
        return true
      rescue SystemCallError => e
        if BayLog.debug_mode
          BayLog.warn("write_nonblock() failed: %s", e)
          #BayLog.warn_e(e)
        end
        return false
      end
    end
  end
end

.support_nonblock_pipe_read ⇒ Object 



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# File 'lib/baykit/bayserver/util/sys_util.rb', line 107

def SysUtil.support_nonblock_pipe_read()
  IO.pipe() do |r, w|
    w.write("abcd")
    begin
      r.read_nonblock(1)
      return true
    rescue SystemCallError => e
      if BayLog.debug_mode
        BayLog.warn("read_nonblock() failed: %s", e)
        #BayLog.warn_e(e)
      end
      return false
    end
  end
end

.support_select_file ⇒ Object 



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# File 'lib/baykit/bayserver/util/sys_util.rb', line 42

def SysUtil.support_select_file()
  File.open(BayServer.bserv_plan) do |f|
    begin
      n = select([f], [], [], 10)
      return true
    rescue IOError => e
      if BayLog.debug_mode
        BayLog.warn("select() failed: %s", e)
        #BayLog.warn_e(e)
      end
      return false
    end
  end
end

.support_select_pipe ⇒ Object 



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# File 'lib/baykit/bayserver/util/sys_util.rb', line 91

def SysUtil.support_select_pipe()
  IO.pipe() do |r, w|
    begin
      n = select([r], [w], [], 10)
      return true
    rescue IOError => e
      if BayLog.debug_mode
        BayLog.warn("select() failed: %s", e)
        #BayLog.warn_e(e)
      end
      return false
    end
  end
end

.support_unix_domain_socket_address ⇒ Object 



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# File 'lib/baykit/bayserver/util/sys_util.rb', line 131

def SysUtil.support_unix_domain_socket_address()
  return !SysUtil.run_on_windows()
end