From: Nick Ing-Simmons <nik@tiuk.ti.com>
Date: Wed, 4 Aug 2004 18:16:47 +0000 (+0000)
Subject: Comment describing purpose.
X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=commitdiff_plain;h=7b8efacbb1727e113e4959cbe88921d459f35f43;p=p5sagit%2Fp5-mst-13.2.git

Comment describing purpose.

p4raw-id: //depot/perl@23195
---

diff --git a/globals.c b/globals.c
index 5c487b9..994ca8d 100644
--- a/globals.c
+++ b/globals.c
@@ -12,6 +12,24 @@
  * Elves, Dwarves, and Men." --Elrond
  */
 
+/* This file exists to #include "perl.h" _ONCE_ with
+ * PERL_IN_GLOBALS_C defined. That causes various global varaiables
+ * in perl.h and other files it includes to be _defined_ (and initialized)
+ * rather than just declared.
+ *
+ * There is a #include "perlapi.h" which makes use of the fact
+ * that the object file created from this file will be included by linker
+ * (to resolve global variables). perlapi.h mention various other "API"
+ * functions not used by perl itself, but the functions get
+ * pulled into the perl executable via the refrerence here.
+ *
+ * Two printf() like functions have also found their way here.
+ * Most likely by analogy to the API scheme above (as perl doesn't
+ * use them) but they probably belong elsewhere the obvious place
+ * being in perlio.c
+ *
+*/
+
 #include "INTERN.h"
 #define PERL_IN_GLOBALS_C
 #include "perl.h"