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Message-ID: <1478810097.1322.3.camel@op.pl>
Subject: Re: [PATCH, newlib] Allow locking routine to be retargeted
From: Freddie Chopin <freddie_chopin@op.pl>
To: newlib@sourceware.org
Date: Thu, 10 Nov 2016 20:35:00 -0000
In-Reply-To: <1478809956.1322.1.camel@gmail.com>
References: <ce22a6fb-67bb-c1b2-78ea-669bd840ad67@foss.arm.com>		 <1478792031.1254.1.camel@op.pl>		 <60acaa10-fb22-8655-fd67-0536fe359871@foss.arm.com>	 <1478809956.1322.1.camel@gmail.com>
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On Thu, 2016-11-10 at 21:32 +0100, Freddie Chopin wrote:
> void __lock_acquire(_LOCK_T lock)
> {
> 	if (lock == 0)
> 	{
> 		// lock not yet really initialized...
> 		disableInterrupts();
> 		if (lock == 0)	// re-check due to possible race
> condition
> 			lock = malloc(sizeof(RealMutexFromYourRtos));
> 
> 		assert(lock != 0);
> 		rtos_mutex_create(lock);
> 		enableInterrupts();
> 	}
> 
> 	rtos_mutex_lock((RealMutexFromYourRtos*)lock);
> }

I've obviously missed some curly braces for the inner "if", but I guess
you get my idea anyway (;

Regards,
FCh