From: Johannes Schindelin <johannes.schindelin@gmx.de>
Date: Thu, 14 Mar 2013 15:23:59 GMT
Subject: Re: [PATCH/RFC] http_init: only initialize SSL for https
Message-ID: <alpine.DEB.1.00.1303141621340.3794@s15462909.onlinehome-server.info>
In-Reply-To: <1363269079-6124-1-git-send-email-kusmabite@gmail.com>

Hi kusma,

On Thu, 14 Mar 2013, Erik Faye-Lund wrote:

> Since ancient times, we have been calling curl_global_init with the
> CURL_GLOBAL_ALL-flag, which initializes SSL (and the Win32 socket
> stack on Windows).
> 
> Initializing SSL takes quite some time on Windows, so let's avoid
> doing it when it's not needed.
> 
> timing of echo "" | ./git-remote-http.exe origin http://localhost
> 
> before
> 
> best of 10 runs:
> real    0m1.634s
> user    0m0.015s
> sys     0m0.000s
> 
> worst of 10 runs:
> real    0m2.701s
> user    0m0.000s
> sys     0m0.000s
> 
> after
> 
> best of 10 runs:
> real    0m0.018s
> user    0m0.000s
> sys     0m0.000s
> 
> worst of 10 runs:
> real    0m0.024s
> user    0m0.000s
> sys     0m0.015s

Good analysis!

> diff --git a/http.c b/http.c
> index 3b312a8..528a736 100644
> --- a/http.c
> +++ b/http.c
> @@ -343,7 +343,8 @@ void http_init(struct remote *remote, const char *url, int proactive_auth)
>  
>  	git_config(http_options, NULL);
>  
> -	curl_global_init(CURL_GLOBAL_ALL);
> +	curl_global_init(CURL_GLOBAL_WIN32 | (prefixcmp(url, "https:") ? 0 :
> +	    CURL_GLOBAL_SSL));
>  
>  	http_proactive_auth = proactive_auth;

I wonder whether we want to have something like this instead:

	flags = CURL_GLOBAL_ALL;
	if (prefixcmp(url, "https:"))
		flags &= ^CURL_GLOBAL_SSL;
	curl_global_init(flags);

I do see that CURL_GLOBAL_ALL is #define'd as CURL_GLOBAL_WIN32 |
CURL_GLOBAL_SSL in curl.h, but that might change in the future, no?

Ciao,
Dscho

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