9530570fa5
* A new format is required to generate definitions for ust tracepoints. Files ust_events_h.py and ust_events_c.py define common macros, while new function ust_events_h in events.py does the actual definition of each tracepoint. * ust.py generates the new interface for calling userspace tracepoints with LTTng 2.x, replacing trace_name(args) to tracepoint(name, args). * As explained in ust_events_c.py, -Wredundant-decls gives a warning when compiling with gcc 4.7 or older. This is specific to lttng-ust so for now use a pragma clause to avoid getting a warning. Signed-off-by: Mohamad Gebai <mohamad.gebai@polymtl.ca> Reviewed-by: Alex Bennée <alex@bennee.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
82 lines
2.2 KiB
Python
82 lines
2.2 KiB
Python
#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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"""
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LTTng User Space Tracing backend.
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"""
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__author__ = "Lluís Vilanova <vilanova@ac.upc.edu>"
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__copyright__ = "Copyright 2012, Lluís Vilanova <vilanova@ac.upc.edu>"
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__license__ = "GPL version 2 or (at your option) any later version"
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__maintainer__ = "Stefan Hajnoczi"
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__email__ = "stefanha@linux.vnet.ibm.com"
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from tracetool import out
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PUBLIC = True
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def c(events):
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pass
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def h(events):
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out('#include <lttng/tracepoint.h>',
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'#include "trace/generated-ust-provider.h"',
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'')
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for e in events:
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argnames = ", ".join(e.args.names())
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if len(e.args) > 0:
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argnames = ", " + argnames
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out('static inline void trace_%(name)s(%(args)s)',
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'{',
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' tracepoint(qemu, %(name)s%(tp_args)s);',
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'}',
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'',
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name = e.name,
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args = e.args,
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tp_args = argnames,
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)
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def ust_events_c(events):
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pass
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def ust_events_h(events):
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for e in events:
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if len(e.args) > 0:
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out('TRACEPOINT_EVENT(',
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' qemu,',
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' %(name)s,',
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' TP_ARGS(%(args)s),',
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' TP_FIELDS(',
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name = e.name,
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args = ", ".join(", ".join(i) for i in e.args),
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)
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for t,n in e.args:
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if ('int' in t) or ('long' in t) or ('unsigned' in t) or ('size_t' in t):
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out(' ctf_integer(' + t + ', ' + n + ', ' + n + ')')
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elif ('double' in t) or ('float' in t):
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out(' ctf_float(' + t + ', ' + n + ', ' + n + ')')
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elif ('char *' in t) or ('char*' in t):
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out(' ctf_string(' + n + ', ' + n + ')')
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elif ('void *' in t) or ('void*' in t):
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out(' ctf_integer_hex(unsigned long, ' + n + ', ' + n + ')')
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out(' )',
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')',
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'')
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else:
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out('TRACEPOINT_EVENT(',
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' qemu,',
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' %(name)s,',
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' TP_ARGS(void),',
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' TP_FIELDS()',
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')',
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'',
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name = e.name,
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) |