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authorLudovic Courtès <ludo@gnu.org>2020-12-07 15:20:11 +0100
committerLudovic Courtès <ludo@gnu.org>2020-12-11 19:06:53 +0100
commitd20665ecbfe7278f550a1ed4cd76565013feab59 (patch)
treefb7d49795dba6e15185979909c9205f0903e5fee /gnu/packages/aux-files
parent459f0d07a1b0f76802a8b7deec8488f5956bce86 (diff)
guix: 'guile' executable ignores GUILE_LOAD_PATH during startup.
When starting the 'guix' command, this ensures Guile modules are immediately found instead of being search for in other directories. This reduces the number of 'stat' calls during startup when GUILE_LOAD_PATH is set to (almost) that of "env -i $(type -P guix)". * gnu/packages/aux-files/guile-launcher.c (load_path) (load_compiled_path): New variables. (inner_main): Restore GUILE_LOAD_PATH and GUILE_LOAD_COMPILED_PATH and set %load-path and %load-compiled-path accordingly. (main): Save GUILE_LOAD_PATH and GUILE_LOAD_COMPILED_PATH and unset them.
Diffstat (limited to 'gnu/packages/aux-files')
-rw-r--r--gnu/packages/aux-files/guile-launcher.c46
1 files changed, 44 insertions, 2 deletions
diff --git a/gnu/packages/aux-files/guile-launcher.c b/gnu/packages/aux-files/guile-launcher.c
index 886ede2846..1dd5d77e66 100644
--- a/gnu/packages/aux-files/guile-launcher.c
+++ b/gnu/packages/aux-files/guile-launcher.c
@@ -1,5 +1,5 @@
/* GNU Guix --- Functional package management for GNU
- Copyright 1996-1997,2000-2001,2006,2008,2011,2013,2018
+ Copyright 1996-1997,2000-2001,2006,2008,2011,2013,2018,2020
Free Software Foundation, Inc.
Copyright (C) 2020 Ludovic Courtès <ludo@gnu.org>
@@ -19,14 +19,47 @@
along with GNU Guix. If not, see <http://www.gnu.org/licenses/>. */
/* This file implements a variant of the 'guile' executable that does not
- complain about locale issues. */
+ complain about locale issues and arranges to reduce startup time by
+ ignoring GUILE_LOAD_PATH and GUILE_LOAD_COMPILED_PATH until it has
+ booted. */
+#include <stdlib.h>
+#include <string.h>
#include <locale.h>
#include <libguile.h>
+/* Saved values of GUILE_LOAD_PATH and GUILE_LOAD_COMPILED_PATH. */
+static const char *load_path, *load_compiled_path;
+
static void
inner_main (void *unused, int argc, char **argv)
{
+ if (load_path != NULL)
+ {
+ setenv ("GUILE_LOAD_PATH", load_path, 1);
+ SCM load_path_var =
+ scm_c_public_lookup ("guile", "%load-path");
+ SCM addition =
+ scm_parse_path (scm_from_locale_string (load_path), SCM_EOL);
+ scm_variable_set_x (load_path_var,
+ scm_append
+ (scm_list_2 (scm_variable_ref (load_path_var),
+ addition)));
+ }
+
+ if (load_compiled_path != NULL)
+ {
+ setenv ("GUILE_LOAD_COMPILED_PATH", load_compiled_path, 1);
+ SCM load_compiled_path_var =
+ scm_c_public_lookup ("guile", "%load-compiled-path");
+ SCM addition =
+ scm_parse_path (scm_from_locale_string (load_compiled_path), SCM_EOL);
+ scm_variable_set_x (load_compiled_path_var,
+ scm_append
+ (scm_list_2 (scm_variable_ref (load_compiled_path_var),
+ addition)));
+ }
+
scm_shell (argc, argv);
}
@@ -40,6 +73,15 @@ main (int argc, char **argv)
which is always preferable over the C locale. */
setlocale (LC_ALL, "en_US.utf8");
+ const char *str;
+ str = getenv ("GUILE_LOAD_PATH");
+ load_path = str != NULL ? strdup (str) : NULL;
+ str = getenv ("GUILE_LOAD_COMPILED_PATH");
+ load_compiled_path = str ? strdup (str) : NULL;
+
+ unsetenv ("GUILE_LOAD_PATH");
+ unsetenv ("GUILE_LOAD_COMPILED_PATH");
+
scm_install_gmp_memory_functions = 1;
scm_boot_guile (argc, argv, inner_main, 0);
return 0; /* never reached */