[ruby.posix.mq] Réf. : Welcome to ruby.posix.mq list.

[tad.bochan@externe.bnpparibas.com]

Hello Eric,

Ref:  http://www.ruby-forum.com/topic/1124434#983255


FYI. These are the mq_* entry points in the HPUX librt.sl

>/home/acore/workarea/tb/www# nm /usr/lib/librt.sl | grep mq_ | grep entry
mq_close            |     15288|extern|entry  |
mq_getattr          |     15376|extern|entry  |
mq_notify           |     15464|extern|entry  |
mq_open             |     15552|extern|entry  |
mq_receive          |     15640|extern|entry  |
mq_send             |     15728|extern|entry  |
mq_setattr          |     15816|extern|entry  |
mq_unlink           |     15904|extern|entry  |

In my clumsy version of this from 4 years ago, I used the system call,
alarm

require "dl"
LIBC=DL.dlopen("/usr/lib/libc.sl")
ALARM=LIBC["alarm","II"]
.
.
.
   def receive
       ALARM[@maxtime]  #  SET TIMEOUT
       trap("ALRM") {puts "Got Alarm!"}
       begin
         msgpri=[@priority].pack("L")
         rc=syscall(SYS_mq_receive, @qid , @buf, @buf.length, msgpri)
         rescue SignalException
                signame="#{$!}"
                @buf[0,(rc=7)]= signame
                puts "Unwanted Signal : #{signame}" unless signame ==
"SIGALRM"
                raise unless signame == "SIGALRM"
       end
       @priority = msgpri.unpack("L").first
       return @buf[0,rc]
   end




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