New upstream version 2.19.65

[lilypond.git] / guile18 / libguile / stackchk.h

diff --git a/guile18/libguile/stackchk.h b/guile18/libguile/stackchk.h
new file mode 100644 (file)
index 0000000..c094e03
--- /dev/null
+++ b/guile18/libguile/stackchk.h
@@ -0,0 +1,72 @@
+/* classes: h_files */
+
+#ifndef SCM_STACKCHK_H
+#define SCM_STACKCHK_H
+
+/* Copyright (C) 1995,1996,1998,2000, 2003, 2006 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 2.1 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
+ */
+
+\f
+
+#include "libguile/__scm.h"
+
+#include "libguile/continuations.h"
+#include "libguile/debug.h"
+
+\f
+
+/* With debug options we have the possibility to disable stack checking.
+ */
+#define SCM_STACK_CHECKING_P SCM_STACK_LIMIT
+
+#ifdef STACK_CHECKING
+# if SCM_STACK_GROWS_UP
+#  define SCM_STACK_OVERFLOW_P(s)\
+   (SCM_STACK_PTR (s) \
+    > (SCM_I_CURRENT_THREAD->base + SCM_STACK_LIMIT))
+# else
+#  define SCM_STACK_OVERFLOW_P(s)\
+   (SCM_STACK_PTR (s) \
+    < (SCM_I_CURRENT_THREAD->base - SCM_STACK_LIMIT))
+# endif
+# define SCM_CHECK_STACK\
+    {\
+       SCM_STACKITEM stack;\
+       if (SCM_STACK_OVERFLOW_P (&stack) && scm_stack_checking_enabled_p)\
+        scm_report_stack_overflow ();\
+    }
+#else
+# define SCM_CHECK_STACK /**/
+#endif /* STACK_CHECKING */
+
+SCM_API int scm_stack_checking_enabled_p;
+
+\f
+
+SCM_API void scm_report_stack_overflow (void);
+SCM_API long scm_stack_size (SCM_STACKITEM *start);
+SCM_API void scm_stack_report (void);
+SCM_API SCM scm_sys_get_stack_size (void);
+SCM_API void scm_init_stackchk (void);
+
+#endif  /* SCM_STACKCHK_H */
+
+/*
+  Local Variables:
+  c-file-style: "gnu"
+  End:
+*/