[Boost-users] Re: Re: boost::thread::join causes assertion(pthreads)

From: Vladimir Prus (ghost_at_[hidden])
Date: 2005-03-22 10:54:18

Peter Dimov wrote:

> Vladimir Prus wrote:
>> Kevin Wheatley wrote:
>>
>>> On Windows I'm getting the:
>>>
>>>     res = WaitForSingleObject(reinterpret_cast<HANDLE>(m_thread),
>>> INFINITE);
>>>     assert(res == WAIT_OBJECT_0);
>>>     res = CloseHandle(reinterpret_cast<HANDLE>(m_thread));
>>>     assert(res);
>>>
>>> res == WAIT_OBJECT_0 assert failing, but I have no idea why because
>>> I'm not told it failed due to the void thread::join().
>>
>> I don't yet know if thread::join should return something or throw an
>> exception, but reporting the error in a better way is desirable. On
>> Linux, assert can be replaced with "perror/abort" combination, and on
>> windows something like that should be also possible
>> ("FormatMessage"?).
>>
>> Anybody objects if I make the change for Linux?
> 
> Yes. assert is not equivalent to perror/abort. The two have different
> meanings and are not interchangeable.

Care to elaborate why the change cannot be made in this specific case?
As far as I'm concerned, there's no practical difference. The file and line
number can be added to 'perror' argument, and gdb will stop just fine both
on abort and assert.

- Volodya