Re: [PHP4BETA] deadlock

On Sat, Sep 25, 1999 at 02:39:43PM +0200, Andi Gutmans wrote: > At 12:47 PM 9/25/99 +0200, Sascha Schumann wrote: > >On Sat, Sep 25, 1999 at 12:37:12PM +0200, Andi Gutmans wrote: > > > Hi, > > > > > > I think the .ctor in allocate_new_resource is the problem which is causing > > > it. It should probably not be mutexed. I'm not sure about the > > > tsrm_new_thread_(begin/end)_handlers handlers though. > > > Try and unlock the mutex call in TSRM.c before line 191 and re-lock it > > > after that line. > > > > Since the deadlock was happening when > > tsrm_new_thread_begin_handler() was called, I've also added > > unlock/lock pairs around begin_handler and end_handler. Now, > > the deadlock does not happen anymore. > > OK. I'm waiting for Zeev to take a look at the code as he wrote TSRM. I > think we can probably narrow the whole ts_resource() down to one pair of > lock/unlock which will be the right way to fix it, but adding those > unlock/lock's will at least allow you to continue development. How does it come that this problem did not show up on other platforms? As a workaround, I modified TSRM earlier to use recursive mutexes which avoids the deadlock situation. Unfortunately, this is an unportable extension and depends on the platform specific implementation. -- Regards, Sascha Schumann Consultant