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-rw-r--r--libguile/stackchk.c87
1 files changed, 87 insertions, 0 deletions
diff --git a/libguile/stackchk.c b/libguile/stackchk.c
new file mode 100644
index 000000000..a9bf133c2
--- /dev/null
+++ b/libguile/stackchk.c
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+/* Copyright 1995-1997,2000-2001,2006,2008,2010-2011,2014,2018
+ Free Software Foundation, Inc.
+
+ This file is part of Guile.
+
+ Guile 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.
+
+ Guile 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 Guile. If not, see
+ <https://www.gnu.org/licenses/>. */
+
+
+
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include "dynwind.h"
+#include "gsubr.h"
+#include "numbers.h"
+#include "ports.h"
+#include "threads.h"
+
+#include "stackchk.h"
+
+
+
+
+/* {Stack Checking}
+ */
+
+int scm_stack_checking_enabled_p;
+
+long
+scm_stack_size (SCM_STACKITEM *start)
+{
+ SCM_STACKITEM stack;
+#if SCM_STACK_GROWS_UP
+ return &stack - start;
+#else
+ return start - &stack;
+#endif /* SCM_STACK_GROWS_UP */
+}
+
+
+void
+scm_stack_report ()
+{
+ SCM port = scm_current_error_port ();
+ SCM_STACKITEM stack;
+ scm_thread *thread = SCM_I_CURRENT_THREAD;
+
+ scm_uintprint ((scm_stack_size (thread->continuation_base)
+ * sizeof (SCM_STACKITEM)),
+ 16, port);
+ scm_puts (" of stack: 0x", port);
+ scm_uintprint ((scm_t_bits) thread->continuation_base, 16, port);
+ scm_puts (" - 0x", port);
+ scm_uintprint ((scm_t_bits) &stack, 16, port);
+ scm_puts ("\n", port);
+}
+
+
+SCM_DEFINE (scm_sys_get_stack_size, "%get-stack-size", 0, 0, 0,
+ (),
+ "Return the current thread's C stack size (in Scheme objects).")
+#define FUNC_NAME s_scm_sys_get_stack_size
+{
+ return scm_from_long (scm_stack_size (SCM_I_CURRENT_THREAD->base));
+}
+#undef FUNC_NAME
+
+
+void
+scm_init_stackchk ()
+{
+#include "stackchk.x"
+}