From: Stefan Sperling <stsp@stsp.name>
Subject: Re: [PATCH 2/2] tog: fix usage of deprecated pthread_yield
To: Quentin Rameau <quinq@fifth.space>
Cc: gameoftrees@openbsd.org
Date: Sun, 19 Sep 2021 14:51:51 +0200

On Sun, Sep 19, 2021 at 01:51:20PM +0200, Quentin Rameau wrote:
> The pthread_yield isn't portable, let's use the POSIX equivalent
> instead.
> ---
>  tog/tog.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/tog/tog.c b/tog/tog.c
> index 5af8f69f..791c2b51 100644
> --- a/tog/tog.c
> +++ b/tog/tog.c
> @@ -848,7 +848,7 @@ view_input(struct tog_view **new, int *done, struct tog_view *view,
>  		if (errcode)
>  			return got_error_set_errno(errcode,
>  			    "pthread_mutex_unlock");
> -		pthread_yield();
> +		sched_yield();
>  		errcode = pthread_mutex_lock(&tog_mutex);
>  		if (errcode)
>  			return got_error_set_errno(errcode,
> -- 
> 2.33.0
> 
> 

Don't we need to include <sched.h> in order to get sched_yield() declared?

I've tried this change on OpenBSD and it seems to work.