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pthread_create and mach ports

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pthread_create and mach ports

Subject: pthread_create and mach ports
From: email@hidden
Date: Wed, 25 Jan 2006 14:28:17 +0100

hi,

we are moving a program from codewarrior to gcc/xcode...in this project:

we switched from cooperative threads (macintosh thread manager) to
posix-threads
but we see unexpected behaviour when we follow the programs execution
with 'top'

when a new thread is created with phtread_create we see in the '#th'
column a value one higher (ok)
the column '#prts' (mach ports) also increases by one (ok)

when the thread subsequently calls 'usleep' the columns '#prts' again
increases by one (ok)

when the thread finishes (last statement is a call of 'pthread_exit')
the column '#th' decreases by one (again ok)

however:

the column '#prts' continues to show the increased value!

since our program creates a lot of threads this looks like a fairly big
problem
because also the column 'vsize' shows increasingly large values

any clues on how to move on?

---
Groetjes, Perry

Zeno Arnhem BV
Ir. P.F.M. Winkel

Utrechtseweg 151
6862 AH Oosterbeek
The Netherlands

Tel. +31(0)26-3892550
http://www.zenosoftware.nl

---
 . ) groetjes perry

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