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[PATCH] Skip invalid compiled file found, continue searching path.
From: |
Jan Nieuwenhuizen |
Subject: |
[PATCH] Skip invalid compiled file found, continue searching path. |
Date: |
Fri, 11 Mar 2016 19:14:56 +0100 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/24.5 (gnu/linux) |
Hi,
As per chat with Ludovic on #guile (thanks!) find attached another
approach to allow switching incrementally from guile-2.0 to guile-2.2:
any invalid compiled files are skipped and we continue searching the
GUILE_LOAD_COMPILED_PATH instead of throwing early.
Greetings,
Jan
>From f4f53b48c1d5ff42ecc66279c3b1cfcfb09d6757 Mon Sep 17 00:00:00 2001
From: Jan Nieuwenhuizen <address@hidden>
Date: Fri, 11 Mar 2016 14:58:09 +0100
Subject: [PATCH] Skip invalid compiled file found, continue searching path.
* libguile/vm.c (load_compiled_with_vm_catch_handler,
do_try_scm_call_0): New static function.
(scm_load_compiled_with_vm): Use them to implement not throwing
if new argument EXCEPTION_ON_NOT_FOUND_P is not SCM_BOOL_TRUE.
* libguile/load.c (search_path): Take optional output argument
PATH_REMAINING.
(scm_primitive_load_path): Use it. Take optional argument
LOAD_COMPILED_PATH. Skip any invalid compiled file found and
continue searching scm_loc_load_compiled_path.
---
libguile/load.c | 55 ++++++++++++++++++++++++++++++++++++++++---------------
libguile/vm.c | 27 ++++++++++++++++++++++++---
libguile/vm.h | 2 +-
3 files changed, 65 insertions(+), 19 deletions(-)
diff --git a/libguile/load.c b/libguile/load.c
index d26f9fc..a6b87cf 100644
--- a/libguile/load.c
+++ b/libguile/load.c
@@ -582,12 +582,16 @@ compiled_is_fresh (SCM full_filename, SCM
compiled_filename,
file name that we find in the path. Otherwise only return a file if
it is newer than SOURCE_STAT_BUF, otherwise issuing a warning if we
see a stale file earlier in the path, setting *FOUND_STALE_FILE to 1.
+
+ If PATH_REMAINING is not NULL, it is set to the part of PATH that was
+ not yet searched.
*/
static SCM
search_path (SCM path, SCM filename, SCM extensions, SCM require_exts,
struct stat *stat_buf,
SCM source_file_name, struct stat *source_stat_buf,
- int *found_stale_file)
+ int *found_stale_file,
+ SCM *path_remaining)
{
struct stringbuf buf;
char *filename_chars;
@@ -724,6 +728,8 @@ search_path (SCM path, SCM filename, SCM extensions, SCM
require_exts,
end:
scm_dynwind_end ();
+ if (path_remaining)
+ path_remaining = &path;
return result;
}
@@ -781,7 +787,7 @@ SCM_DEFINE (scm_search_path, "search-path", 2, 0, 1,
require_exts = SCM_BOOL_F;
return search_path (path, filename, extensions, require_exts, &stat_buf,
- SCM_BOOL_F, NULL, NULL);
+ SCM_BOOL_F, NULL, NULL, NULL);
}
#undef FUNC_NAME
@@ -806,7 +812,7 @@ SCM_DEFINE (scm_sys_search_load_path, "%search-load-path",
1, 0, 0,
SCM_VALIDATE_STRING (1, filename);
return search_path (*scm_loc_load_path, filename, *scm_loc_load_extensions,
- SCM_BOOL_F, &stat_buf, SCM_BOOL_F, NULL, NULL);
+ SCM_BOOL_F, &stat_buf, SCM_BOOL_F, NULL, NULL, NULL);
}
#undef FUNC_NAME
@@ -969,14 +975,19 @@ SCM_DEFINE (scm_primitive_load_path,
"primitive-load-path", 0, 0, 1,
"depending on the optional second argument,\n"
"@var{exception_on_not_found}. If it is @code{#f}, @code{#f}\n"
"will be returned. If it is a procedure, it will be called\n"
- "with no arguments. Otherwise an error is signalled.")
+ "with no arguments. Otherwise an error is signalled."
+ "If the optional third argument,\n"
+ "@var{load_compiled_path} is given, use it to search for compiled
files\n"
+ "instead of @var{*scm_loc_load_compiled_path}.")
#define FUNC_NAME s_scm_primitive_load_path
{
SCM filename, exception_on_not_found;
SCM full_filename, compiled_filename;
SCM hook = *scm_loc_load_hook;
struct stat stat_source, stat_compiled;
+ SCM load_compiled_path;
int found_stale_compiled_file = 0;
+ SCM load_compiled_path_remaining = SCM_EOL;
if (scm_is_true (hook) && scm_is_false (scm_procedure_p (hook)))
SCM_MISC_ERROR ("value of %load-hook is neither a procedure nor #f",
@@ -988,21 +999,27 @@ SCM_DEFINE (scm_primitive_load_path,
"primitive-load-path", 0, 0, 1,
single argument (the file name). */
filename = args;
exception_on_not_found = SCM_UNDEFINED;
+ load_compiled_path = *scm_loc_load_compiled_path;
}
else
{
- /* Starting from 1.9, this function takes 1 required and 1 optional
- argument. */
+ /* Starting from 1.9, this function takes 1 required and 1
+ optional argument.
+
+ Starting from 2.1.2, this function takes 1 required and 2
+ optional arguments. */
long len;
SCM_VALIDATE_LIST_COPYLEN (SCM_ARG1, args, len);
- if (len < 1 || len > 2)
+ if (len < 1 || len > 3)
scm_error_num_args_subr (FUNC_NAME);
filename = SCM_CAR (args);
SCM_VALIDATE_STRING (SCM_ARG1, filename);
exception_on_not_found = len > 1 ? SCM_CADR (args) : SCM_UNDEFINED;
+ load_compiled_path = len < 3 ? *scm_loc_load_compiled_path
+ : SCM_CADDR (args);
}
if (SCM_UNBNDP (exception_on_not_found))
@@ -1010,13 +1027,13 @@ SCM_DEFINE (scm_primitive_load_path,
"primitive-load-path", 0, 0, 1,
full_filename = search_path (*scm_loc_load_path, filename,
*scm_loc_load_extensions, SCM_BOOL_F,
- &stat_source, SCM_BOOL_F, NULL, NULL);
+ &stat_source, SCM_BOOL_F, NULL, NULL, NULL);
compiled_filename =
- search_path (*scm_loc_load_compiled_path, filename,
+ search_path (load_compiled_path, filename,
*scm_loc_load_compiled_extensions, SCM_BOOL_T,
&stat_compiled, full_filename, &stat_source,
- &found_stale_compiled_file);
+ &found_stale_compiled_file, &load_compiled_path_remaining);
if (scm_is_false (compiled_filename)
&& scm_is_true (full_filename)
@@ -1066,13 +1083,21 @@ SCM_DEFINE (scm_primitive_load_path,
"primitive-load-path", 0, 0, 1,
? full_filename : compiled_filename));
if (scm_is_true (compiled_filename))
- return scm_load_compiled_with_vm (compiled_filename);
+ {
+ SCM module = scm_load_compiled_with_vm (compiled_filename, SCM_BOOL_T);
+ if (module != SCM_BOOL_F || exception_on_not_found != SCM_BOOL_T)
+ return module;
+ return scm_primitive_load_path (scm_list_3
+ (filename,
+ exception_on_not_found,
+ load_compiled_path_remaining));
+ }
else
{
SCM freshly_compiled = scm_try_auto_compile (full_filename);
if (scm_is_true (freshly_compiled))
- return scm_load_compiled_with_vm (freshly_compiled);
+ return scm_load_compiled_with_vm (freshly_compiled, SCM_BOOL_T);
else
return scm_primitive_load (full_filename);
}
@@ -1095,14 +1120,14 @@ scm_init_eval_in_scheme (void)
eval_scm = search_path (*scm_loc_load_path,
scm_from_locale_string ("ice-9/eval.scm"),
SCM_EOL, SCM_BOOL_F, &stat_source,
- SCM_BOOL_F, NULL, NULL);
+ SCM_BOOL_F, NULL, NULL, NULL);
eval_go = search_path (*scm_loc_load_compiled_path,
scm_from_locale_string ("ice-9/eval.go"),
SCM_EOL, SCM_BOOL_F, &stat_compiled,
- eval_scm, &stat_source, &found_stale_eval_go);
+ eval_scm, &stat_source, &found_stale_eval_go, NULL);
if (scm_is_true (eval_go))
- scm_load_compiled_with_vm (eval_go);
+ scm_load_compiled_with_vm (eval_go, SCM_BOOL_T);
else
/* If we have no eval.go, we shouldn't load any compiled code at all
because we can't guarantee that tail calls will work. */
diff --git a/libguile/vm.c b/libguile/vm.c
index 33f12b4..b560ee5 100644
--- a/libguile/vm.c
+++ b/libguile/vm.c
@@ -1500,10 +1500,31 @@ SCM_DEFINE (scm_call_with_stack_overflow_handler,
* Initialize
*/
-SCM
-scm_load_compiled_with_vm (SCM file)
+static SCM
+load_compiled_with_vm_catch_handler (void *data, SCM tag, SCM throw_args)
+{
+ return SCM_BOOL_F;
+}
+
+static SCM
+do_try_scm_call_0 (void *data)
{
- return scm_call_0 (scm_load_thunk_from_file (file));
+ SCM thunk = SCM_PACK_POINTER (data);
+ return scm_call_0 (thunk);
+}
+
+SCM
+scm_load_compiled_with_vm (SCM file, SCM exception_on_not_found_p)
+{
+ SCM thunk = scm_load_thunk_from_file (file);
+ if (exception_on_not_found_p == SCM_BOOL_F)
+ return scm_c_catch (SCM_BOOL_T,
+ do_try_scm_call_0,
+ SCM_UNPACK_POINTER (thunk),
+ load_compiled_with_vm_catch_handler,
+ SCM_UNPACK_POINTER (thunk),
+ NULL, NULL);
+ return scm_call_0 (thunk);
}
diff --git a/libguile/vm.h b/libguile/vm.h
index 2ca4f2a..d76ac31 100644
--- a/libguile/vm.h
+++ b/libguile/vm.h
@@ -93,7 +93,7 @@ struct scm_vm_cont {
#define SCM_VM_CONT_PARTIAL_P(CONT) (SCM_VM_CONT_DATA (CONT)->flags &
SCM_F_VM_CONT_PARTIAL)
#define SCM_VM_CONT_REWINDABLE_P(CONT) (SCM_VM_CONT_DATA (CONT)->flags &
SCM_F_VM_CONT_REWINDABLE)
-SCM_API SCM scm_load_compiled_with_vm (SCM file);
+SCM_API SCM scm_load_compiled_with_vm (SCM file, SCM exception_on_not_found_p);
SCM_INTERNAL SCM scm_i_call_with_current_continuation (SCM proc);
SCM_INTERNAL SCM scm_i_capture_current_stack (void);
--
2.6.3
--
Jan Nieuwenhuizen <address@hidden> | GNU LilyPond http://lilypond.org
Freelance IT http://JoyofSource.com | Avatar® http://AvatarAcademy.nl
Re: [PATCH] Append effective version to GUILE_LOAD[_COMPILED]_PATH, Mikael Djurfeldt, 2016/03/16