[ECOS] cyg_create_thread question

[Stephan Bourduas <stephan dot bourduas at videotron dot ca>]

This is more of a C/C++ question.  Can someone tell me
exactly what "new((void *)thread)" thread does?  The code
is taken from kapi.cxx.


externC void cyg_thread_create(
    cyg_addrword_t      sched_info,             /* scheduling info (eg pri)  */
    cyg_thread_entry_t  *entry,                 /* entry point function      */
    cyg_addrword_t      entry_data,             /* entry data                */
    char                *name,                  /* optional thread name      */
    void                *stack_base,            /* stack base, NULL = alloc  */
    cyg_ucount32        stack_size,             /* stack size, 0 = default   */
    cyg_handle_t        *handle,                /* returned thread handle    */
    cyg_thread          *thread                 /* put thread here           */
) __THROW
{
    CYG_ASSERT_SIZES( cyg_thread, Cyg_Thread );

    Cyg_Thread *t = new((void *)thread) Cyg_Thread (
        (CYG_ADDRWORD) sched_info,
        (cyg_thread_entry *)entry,
        (CYG_ADDRWORD) entry_data,
        name,
        (CYG_ADDRWORD) stack_base,
        stack_size
        );
    t=t;
    
    CYG_CHECK_DATA_PTR( handle, "Bad handle pointer" );
    *handle = (cyg_handle_t)thread;
}

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