2 # -*- coding: utf-8 -*-
5 Simple built-in backend.
8 __author__ = "Lluís Vilanova <vilanova@ac.upc.edu>"
9 __copyright__ = "Copyright 2012-2014, Lluís Vilanova <vilanova@ac.upc.edu>"
10 __license__ = "GPL version 2 or (at your option) any later version"
12 __maintainer__ = "Stefan Hajnoczi"
13 __email__ = "stefanha@linux.vnet.ibm.com"
16 from tracetool import out
23 strtype = ('const char*', 'char*', 'const char *', 'char *')
24 if arg.lstrip().startswith(strtype):
30 def generate_h_begin(events):
32 out('void _simple_%(api)s(%(args)s);',
38 def generate_h(event):
39 out(' _simple_%(api)s(%(args)s);',
41 args=", ".join(event.args.names()))
44 def generate_c_begin(events):
45 out('#include "trace.h"',
46 '#include "trace/control.h"',
47 '#include "trace/simple.h"',
51 def generate_c(event):
52 out('void _simple_%(api)s(%(args)s)',
54 ' TraceBufferRecord rec;',
58 for type_, name in event.args:
60 out(' size_t arg%(name)s_len = %(name)s ? MIN(strlen(%(name)s), MAX_TRACE_STRLEN) : 0;',
62 strsizeinfo = "4 + arg%s_len" % name
63 sizes.append(strsizeinfo)
66 sizestr = " + ".join(sizes)
67 if len(event.args) == 0:
72 ' if (!trace_event_get_state(%(event_id)s)) {',
76 ' if (trace_record_start(&rec, %(event_id)s, %(size_str)s)) {',
77 ' return; /* Trace Buffer Full, Event Dropped ! */',
79 event_id='TRACE_' + event.name.upper(),
82 if len(event.args) > 0:
83 for type_, name in event.args:
86 out(' trace_record_write_str(&rec, %(name)s, arg%(name)s_len);',
88 # pointer var (not string)
89 elif type_.endswith('*'):
90 out(' trace_record_write_u64(&rec, (uintptr_t)(uint64_t *)%(name)s);',
94 out(' trace_record_write_u64(&rec, (uint64_t)%(name)s);',
97 out(' trace_record_finish(&rec);',