| # -*- coding: utf-8 -*- |
| |
| """ |
| LTTng User Space Tracing backend. |
| """ |
| |
| __author__ = "Lluís Vilanova <vilanova@ac.upc.edu>" |
| __copyright__ = "Copyright 2012-2017, Lluís Vilanova <vilanova@ac.upc.edu>" |
| __license__ = "GPL version 2 or (at your option) any later version" |
| |
| __maintainer__ = "Stefan Hajnoczi" |
| __email__ = "stefanha@linux.vnet.ibm.com" |
| |
| |
| from tracetool import out |
| |
| |
| PUBLIC = True |
| |
| |
| def generate_h_begin(events, group): |
| if group == "root": |
| header = "trace-ust-root.h" |
| else: |
| header = "trace-ust.h" |
| |
| out('#include <lttng/tracepoint.h>', |
| '#include "%s"' % header, |
| '', |
| '/* tracepoint_enabled() was introduced in LTTng UST 2.7 */', |
| '#ifndef tracepoint_enabled', |
| '#define tracepoint_enabled(a, b) true', |
| '#endif', |
| '') |
| |
| |
| def generate_h(event, group): |
| argnames = ", ".join(event.args.names()) |
| if len(event.args) > 0: |
| argnames = ", " + argnames |
| |
| out(' tracepoint(qemu, %(name)s%(tp_args)s);', |
| name=event.name, |
| tp_args=argnames) |
| |
| |
| def generate_h_backend_dstate(event, group): |
| out(' tracepoint_enabled(qemu, %(name)s) || \\', |
| name=event.name) |
