libtf: major redesign startedHEADmaster

the idea is to make libtf completely multi-threaded. meaning each
fiber can be running concurrently in separate thread. quite a bit
of framework is added for this and some atomic helpers are already
introduced. however, io polling is busy polling now (will be soon
in own thread) and timeouts are still more or less broken. oh, and
the multithreading core is not there yet. basically we are currently
mostly broken ;)

1 files changed, 49 insertions, 0 deletions

diff --git a/include/libtf/vmach.h b/include/libtf/vmach.h
new file mode 100644
index 0000000..d302366
--- /dev/null
+++ b/include/libtf/vmach.h
@@ -0,0 +1,49 @@
+/* vmach.h - "virtual" machine and cpu contexts
+ *
+ * Copyright (C) 2009 Timo Teräs <timo.teras@iki.fi>
+ * All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 or later as
+ * published by the Free Software Foundation.
+ *
+ * See http://www.gnu.org/ for details.
+ */
+
+#ifndef TF_VMACH_H
+#define TF_VMACH_H
+
+#include <libtf/fiber.h>
+
+struct tf_vmach {
+	struct tf_poll_hooks *		poll_ops;
+	void *				poll_fiber;
+	void *				timeout_fiber;
+	struct tf_fiber			startup_fiber;
+	int				num_user_fibers;
+	struct tf_list_head		run_q;
+};
+
+struct tf_vcpu {
+	struct tf_vmach *		machine;
+};
+
+static inline struct tf_vmach *tf_vmach_get_current(void)
+{
+	extern __thread struct tf_vmach *tf_current_vmach;
+	return tf_current_vmach;
+}
+
+static inline struct tf_vcpu *tf_vmach_get_current_cpu(void)
+{
+	extern __thread struct tf_vcpu *tf_current_vcpu;
+	return tf_current_vcpu;
+}
+
+void tf_vmach_start(void);
+void tf_vmach_stop(void);
+
+void tf_vmach_run(struct tf_vmach *vm, struct tf_fiber *f);
+void tf_vmach_run_dedicated(struct tf_vmach *vm, struct tf_fiber *f);
+
+#endif