Re: pthread memory leaks

From:
yatremblay@bel1lin202.(none) (Yannick Tremblay)
Newsgroups:
comp.lang.c++
Date:
Mon, 6 Jun 2011 09:38:40 +0000 (UTC)
Message-ID:
<isi770$ade$1@dont-email.me>
In article <b5371b7f-e6cb-4da7-92db-87944822be69@s16g2000prf.googlegroups.com>,
jakash3 <jakashthree@gmail.com> wrote:

On May 30, 5:02?pm, Ian Collins <ian-n...@hotmail.com> wrote:

Have you looked at boost thread?


Yes, It doesn't appear to have thread suspension. I hope to implement
this for my thread class:


Boost thread has designed decisions in its interface. I would say
that most of these design decisions are to encourage the users
to use multi-threading in a saner and safer manner than when starting
with the full low-level capabilities of pthread or Windows threads.

For example:

class Thread {
public:
#ifdef _WIN32
    HANDLE tid;
#else
    pthread_t tid;
#endif
    void* (*sub)(void*);
    Thread();
    ~Thread();
    Thread(void* (*tfunc)(void*));
    Thread& operator= (void* (*tfunc)(void*));
    Thread& operator= (Thread t);

Please clarify what you intend here? Is this a normal assignment
operator? If so, what does it mean to "assign" an existing thread to
another?

You are defining an operator= without defining a copy-constructor
which is a typical no-no, unless you really can explain why.

If you define a copy-constructor, you also need to really understand
what it means.

Note: boost thread clearly define them as move operations, not copies.

And you would probably need to either pass by reference or need that
copy constructor.

     bool operator!= (void* (*tfunc)(void*));
    bool operator!= (Thread t);
    bool operator== (void* (*tfunc)(void*));
    bool operator== (Thread t);
    bool start(void* param = 0);
    void* term(void* (*quit)(void*) = 0, void* param = 0);
    bool stop();
    bool cont();
    bool join(void ** ret);
};

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