1 files changed, 65 insertions, 0 deletions
diff --git a/include/clplumbing/realtime.h b/include/clplumbing/realtime.h
new file mode 100644
index 0000000..45eb76c
--- /dev/null
+++ b/include/clplumbing/realtime.h
@@ -0,0 +1,65 @@
+/*
+ * 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 St, Fifth Floor, Boston, MA  02110-1301  USA
+ */
+
+#ifndef _CLPLUMBING_REALTIME_H
+#	define _CLPLUMBING_REALTIME_H
+#	include <sched.h>
+
+#if defined(SCHED_RR) && defined(_POSIX_PRIORITY_SCHEDULING) && !defined(ON_DARWIN)
+#       define DEFAULT_REALTIME_POLICY SCHED_RR
+#endif
+
+/*
+ *
+ * make_realtime() will make the current process a soft realtime process
+ * and lock it into memory after growing the heap by heapgrowK*1024 bytes
+ *
+ * If you set spolicy or priority to <= 0, then defaults will be used.
+ * Otherwise you need to use a value for spolicy from <sched.h>
+ * and use an appropriate priority for the given spolicy.
+ *
+ * WARNING: badly behaved programs which use the make_realtime() function
+ * can easily hang the machine.
+ */
+
+void cl_make_realtime
+(	int spolicy,	/* SCHED_RR or SCHED_FIFO (or SCHED_OTHER) */
+	int priority,	/* typically 1-99 */
+	int stackgrowK,	/* Amount to grow stack by */
+	int heapgrowK	/* Amount to grow heap by */
+);
+
+void cl_make_normaltime(void);
+
+/* Cause calls to make_realtime() to be ignored */
+void cl_disable_realtime(void);
+
+/* Cause calls to make_realtime() to be accepted.
+ * This is the default behaviour */
+void cl_enable_realtime(void);
+
+/* Sleep a really short (the shortest) time */
+int cl_shortsleep(void);
+
+/* Print messages if we've done (more) non-realtime mallocs */
+void cl_realtime_malloc_check(void);
+
+/* Number of times we "go to the well" for memory after becoming realtime */
+int cl_nonrealtime_malloc_count(void);
+/* Number of bytes we "got from the well" for memory after becoming realtime */
+unsigned long cl_nonrealtime_malloc_size(void);
+
+#endif