shithub: mc

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Lazily initialize the resolver.

	It turns out to make a decent difference to code size.

--- a/lib/std/resolve+posixy.myr

+++ b/lib/std/resolve+posixy.myr

@@ -66,18 +66,12 @@

 const Resolvfile = "/etc/resolv.conf"

 const Timeout = 2_000

+var initdone	: bool = false

 var hostmap	: htab(byte[:], hostinfo)#

 var dnscache	: htab(byte[:], hostinfo)#

 var search	: byte[:][:]

 var nameservers	: netaddr[:]

-const __init__ = {

-	hostmap = mkht()

-	dnscache = mkht()

-	loadhosts()

-	loadresolv()

-}

-

 const resolve = {host

 	/*TODO: v4 and v6 */

 	-> resolverec(host, `DnsA)

@@ -88,6 +82,17 @@

 }

 const resolverec = {host, t

+	if !initdone /*  avoid extra contention */

+		lock(netlck)

+		if !initdone

+			hostmap = mkht()

+			dnscache = mkht()

+			loadhosts()

+			loadresolv()

+		;;

+		unlock(netlck)

+	;;

+

 	match hostfind(host)

 	| `Some hinf:

 		-> `Ok sldup([hinf][:])