* [PATCH] test for smob mark segv
@ 2013-02-26 16:36 Mike Gran
2013-03-01 4:47 ` Mike Gran
2013-03-01 9:37 ` Ludovic Courtès
0 siblings, 2 replies; 3+ messages in thread
From: Mike Gran @ 2013-02-26 16:36 UTC (permalink / raw)
To: guile-devel
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Hello-
What would you think about applying the following patch?
It is a standalone test that, in effect, checks to see if
BDW-GC is running marking in its own non-Guile thread. If
BDW does have parallel marking enabled, this test will SEGV.
If it doesn't have parallel marking enabled, this test will pass.
If you run it with GC_MARKERS=1 in the env it will always
pass even if BDW-GC was compiled with parallel marking enabled.
It could be a precursor to another patch that forces GC_MARKERS=1
either in libguile or in guile.c.
Thanks,
Mike Gran
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From f3adf180edbf6ebe642cf4c1ad8f029ce0876d0d Mon Sep 17 00:00:00 2001
From: Mike Gran <spk121@yahoo.com>
Date: Tue, 26 Feb 2013 08:27:22 -0800
Subject: [PATCH] Add standalone test for smob marking
* test-suite/standalone/Makefile.am: add test-smob-mark
* test-suite/standalone/test-smob-mark.c: new test
* test-suite/standalone/.gitignore: ignore test-smob-mark
---
test-suite/standalone/.gitignore | 2 +
test-suite/standalone/Makefile.am | 6 ++
test-suite/standalone/test-smob-mark.c | 118 +++++++++++++++++++++++++++++++++
3 files changed, 126 insertions(+)
create mode 100644 test-suite/standalone/test-smob-mark.c
diff --git a/test-suite/standalone/.gitignore b/test-suite/standalone/.gitignore
index 794146e..db0794b 100644
--- a/test-suite/standalone/.gitignore
+++ b/test-suite/standalone/.gitignore
@@ -13,3 +13,5 @@
/test-scm-take-u8vector
/test-loose-ends
/test-srfi-1
+/test-smob-mark
+
diff --git a/test-suite/standalone/Makefile.am b/test-suite/standalone/Makefile.am
index be5d913..8190e59 100644
--- a/test-suite/standalone/Makefile.am
+++ b/test-suite/standalone/Makefile.am
@@ -251,4 +251,10 @@ EXTRA_DIST += test-with-guile-module.c test-scm-with-guile.c
endif
+test_smob_mark_SOURCES = test-smob-mark.c
+test_smob_mark_CFLAGS = ${test_cflags}
+test_smob_mark_LDADD = $(LIBGUILE_LDADD)
+check_PROGRAMS += test-smob-mark
+TESTS += test-smob-mark
+
EXTRA_DIST += ${check_SCRIPTS}
diff --git a/test-suite/standalone/test-smob-mark.c b/test-suite/standalone/test-smob-mark.c
new file mode 100644
index 0000000..d97ef25
--- /dev/null
+++ b/test-suite/standalone/test-smob-mark.c
@@ -0,0 +1,118 @@
+/* Copyright (C) 2013 Free Software Foundation, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either version 3 of
+ * the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ */
+
+#if HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <assert.h>
+#include <libguile.h>
+
+typedef struct x_tag
+{
+ SCM scm_value;
+ int c_value;
+} x_t;
+
+static scm_t_bits x_tag;
+SCM make_x (void);
+SCM mark_x (SCM x);
+int print_x (SCM x, SCM port, scm_print_state * pstate);
+size_t free_x (SCM x);
+void init_smob_type (void);
+void test_scm_smob_mark (void);
+
+SCM
+make_x ()
+{
+ static int i = 0;
+ SCM s_x;
+ x_t *c_x;
+
+ i++;
+ c_x = (x_t *) scm_gc_malloc (sizeof (x_t), "x");
+ c_x->scm_value = scm_from_int (i);
+ c_x->c_value = i;
+ SCM_NEWSMOB (s_x, x_tag, c_x);
+ return s_x;
+}
+
+SCM
+mark_x (SCM x)
+{
+ x_t *c_x;
+ c_x = (x_t *) SCM_SMOB_DATA (x);
+ scm_gc_mark (c_x->scm_value);
+ return SCM_BOOL_F;
+}
+
+size_t
+free_x (SCM x)
+{
+ x_t *c_x;
+ c_x = (x_t *) SCM_SMOB_DATA (x);
+ scm_gc_free (c_x, sizeof (x_t), "x");
+ c_x = NULL;
+ return 0;
+}
+
+int
+print_x (SCM x, SCM port, scm_print_state * pstate SCM_UNUSED)
+{
+ x_t *c_x = (x_t *) SCM_SMOB_DATA (x);
+ scm_puts ("#<x ", port);
+ if (c_x == (x_t *) NULL)
+ scm_puts ("(freed)", port);
+ else
+ scm_write (c_x->scm_value, port);
+ scm_puts (">", port);
+
+ return 1;
+}
+
+void
+test_scm_smob_mark ()
+{
+ int i;
+ for (i = 0; i < 10000; i++)
+ make_x ();
+ scm_gc ();
+}
+
+void
+init_smob_type ()
+{
+ x_tag = scm_make_smob_type ("x", sizeof (x_t));
+ scm_set_smob_free (x_tag, free_x);
+ scm_set_smob_print (x_tag, print_x);
+ scm_set_smob_mark (x_tag, mark_x);
+}
+
+static void
+tests (void *data, int argc, char **argv)
+{
+ init_smob_type ();
+ test_scm_smob_mark ();
+}
+
+int
+main (int argc, char *argv[])
+{
+ scm_boot_guile (argc, argv, tests, NULL);
+ return 0;
+}
--
1.7.11.7
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [PATCH] test for smob mark segv
2013-02-26 16:36 [PATCH] test for smob mark segv Mike Gran
@ 2013-03-01 4:47 ` Mike Gran
2013-03-01 9:37 ` Ludovic Courtès
1 sibling, 0 replies; 3+ messages in thread
From: Mike Gran @ 2013-03-01 4:47 UTC (permalink / raw)
To: guile-devel
> From: Mike Gran <spk121@yahoo.com>
> What would you think about applying the following patch?
>
> It is a standalone test that, in effect, checks to see if
> BDW-GC is running marking in its own non-Guile thread. If
> BDW does have parallel marking enabled, this test will SEGV.
> If it doesn't have parallel marking enabled, this test will pass.
Hearing no objection, and since it is test only, I guess
I'll push it.
OK?
-Mike
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH] test for smob mark segv
2013-02-26 16:36 [PATCH] test for smob mark segv Mike Gran
2013-03-01 4:47 ` Mike Gran
@ 2013-03-01 9:37 ` Ludovic Courtès
1 sibling, 0 replies; 3+ messages in thread
From: Ludovic Courtès @ 2013-03-01 9:37 UTC (permalink / raw)
To: Mike Gran; +Cc: guile-devel
Hi Mike,
Mike Gran <spk121@yahoo.com> skribis:
> It is a standalone test that, in effect, checks to see if
> BDW-GC is running marking in its own non-Guile thread. If
> BDW does have parallel marking enabled, this test will SEGV.
> If it doesn't have parallel marking enabled, this test will pass.
Good.
FWIW, I’ve been meaning to fix the problem for good. I hope to post a
patch within the next few days.
> From f3adf180edbf6ebe642cf4c1ad8f029ce0876d0d Mon Sep 17 00:00:00 2001
> From: Mike Gran <spk121@yahoo.com>
> Date: Tue, 26 Feb 2013 08:27:22 -0800
> Subject: [PATCH] Add standalone test for smob marking
>
> * test-suite/standalone/Makefile.am: add test-smob-mark
Specify the makefile variable name in parentheses.
> * test-suite/standalone/test-smob-mark.c: new test
> * test-suite/standalone/.gitignore: ignore test-smob-mark
No need for .gitignore here.
> +typedef struct x_tag
> +{
> + SCM scm_value;
> + int c_value;
> +} x_t;
Separate typedef and struct.
> +static scm_t_bits x_tag;
> +SCM make_x (void);
> +SCM mark_x (SCM x);
> +int print_x (SCM x, SCM port, scm_print_state * pstate);
> +size_t free_x (SCM x);
> +void init_smob_type (void);
> +void test_scm_smob_mark (void);
Make them all static.
> +SCM
> +mark_x (SCM x)
> +{
> + x_t *c_x;
> + c_x = (x_t *) SCM_SMOB_DATA (x);
> + scm_gc_mark (c_x->scm_value);
> + return SCM_BOOL_F;
> +}
I think it’d be good to increment a global counter to make sure the mark
procedure is called at all.
Thanks!
Ludo’.
^ permalink raw reply [flat|nested] 3+ messages in thread
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2013-02-26 16:36 [PATCH] test for smob mark segv Mike Gran
2013-03-01 4:47 ` Mike Gran
2013-03-01 9:37 ` Ludovic Courtès
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