Re: [boost] Re: [Threads] Much faster try_mutex on Windows NT

From: Adal Chiriliuc (adal_at_[hidden])
Date: 2004-03-22 10:46:32

On Monday, March 22, 2004 Alexander Terekhov wrote:

> Adal Chiriliuc wrote:
>> 
>> Hello.
>> 
>> try_mutex uses a Mutex instead of a CRITICAL_SECTION because on
>> Windows 9x and Me it's impossible to try the aquisition of a
>> CRITICAL_SECTION.

> Yeah.

> class swap_based_mutex_for_windows { // noncopyable

>   atomic<int>      m_lock_status;    // 0: free, 1: locked, -1: lock-contention
>   auto_reset_event m_retry_event;  

> public:

> ...

You mean to use an atomic int and an event to simulate a mutex?
Wasn't event usage discouraged because it is unsafe?

atomic, auto_reset_event and msync are not defined anywhere in my
Boost 1.31.0 folder (full text search).

Adal Chiriliuc