POSIX Thread - Memory leak Post: 302193079

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Top Forums Programming POSIX Thread - Memory leak Post 302193079 by laurovalente on Thursday 8th of May 2008 12:26:35 PM

05-08-2008

Registered User

Ok found it!

Hello all!

I found the cause for it..

Quote:

Note - When there is no explicit synchronization to prevent it, a newly created, detached thread can die and have its thread ID reassigned to another new thread before its creator returns from pthread_create(). For nondetached (PTHREAD_CREATE_JOINABLE) threads, it is very important that some thread join with it after it terminates -- otherwise the resources of that thread are not released for use by new threads. This commonly results in a memory leak. So when you do not want a thread to be joined, create it as a detached thread.

(from Further Threads Programming:Thread Attributes (POSIX))

When i initialized the threadattr whit the parameter PTHREAD_CREATE_DETACHED there was no memory leak anymore!
!!!!!
Smilie

*just to remember that this socket implementation is not a good one for producing, since it creates one thread per each new connection accepted...
The best way to implemented is to limit a maximum number of connections.

laurovalente

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tis_setspecific

tis_setspecific(3)					     Library Functions Manual						tis_setspecific(3)

NAME

       tis_setspecific - Changes the value associated with the specified thread-specific data key.

LIBRARY

       Standard C Library (libc.so, libc.a)

SYNOPSIS

       #include <tis.h>

       int   tis_setspecific(
				pthread_key_t	key,
				const void	*value);

STANDARDS

       None

PARAMETERS

       Thread-specific data Key that identifies the data to receive value.  Must be obtained from a call to tis_key_create(3).	New value to asso-
       ciate with the specified key.  Once set, this value can be retrieved using the same key in a call to tis_getspecific(3).

DESCRIPTION

       This routine sets the value associated with the specified thread-specific data key. If a value is defined for the key (that is, the current
       value is not NULL), the new value is substituted for it.  The key is obtained by a previous call to tis_key_create(3).

       Do not call this routine from a data destructor function.  Doing so could lead to a memory leak or an infinite loop.

RETURN VALUES

       If  an  error condition occurs, this routine returns an integer value indicating the type of error.  Possible return values are as follows:
       Successful completion.  The value specified by key is not a valid key.  Insufficient memory exists to associate the value with the key.

ERRORS

       None

RELATED INFORMATION

       Functions: tis_getspecific(3), tis_key_create(3), tis_key_delete(3)

       Manuals: Guide to DECthreads and Programmer's Guide

       delim off

																tis_setspecific(3)