Subject: Re: [msysGit] [PATCH v3 08/14] daemon: use run-command api for async serving

From: Eric Sunshine <[email-masked]>
Date: Sun, 10 Oct 2010 15:56:13 -0400

On 10/10/2010 9:20 AM, Erik Faye-Lund wrote:
> fork() is only available on POSIX, so to support git-daemon
> on Windows we have to use something else.
>
> Instead we invent the flag --serve, which is a stripped down
> version of --inetd-mode. We use start_command() to call
> git-daemon with this flag appended to serve clients.
>
> Signed-off-by: Erik Faye-Lund<[email-masked]>
> ---
> @@ -654,14 +641,14 @@ static void remove_child(pid_t pid)
>    */
>   static void kill_some_child(void)
>   {
> -	const struct child *blanket, *next;
> +	struct child *blanket, *next;

It is not immediately obvious why 'const' was dropped.

> @@ -671,18 +658,26 @@ static void check_dead_children(void)
>   	int status;
>   	pid_t pid;
>
> -	while ((pid = waitpid(-1,&status, WNOHANG))>  0) {
> -		const char *dead = "";
> -		remove_child(pid);
> -		if (!WIFEXITED(status) || (WEXITSTATUS(status)>  0))
> -			dead = " (with error)";
> -		loginfo("[%"PRIuMAX"] Disconnected%s", (uintmax_t)pid, dead);
> -	}
> +	struct child **cradle, *blanket;
> +	for (cradle =&firstborn; (blanket = *cradle);)
> +		if ((pid = waitpid(blanket->cld.pid,&status, WNOHANG))>  1) {
> +			const char *dead = "";
> +			if (status)
> +				dead = " (with error)";
> +			loginfo("[%"PRIuMAX"] Disconnected%s", (uintmax_t)pid, dead);
> +
> +			/* remove the child */
> +			*cradle = blanket->next;
> +			live_children--;
> +			free(blanket);
> +		} else
> +			cradle =&blanket->next;
>   }
>
> +char **cld_argv;
>   static void handle(int incoming, struct sockaddr *addr, int addrlen)
>   {

Should 'cld_argv' be declared static?

-- ES