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"op-entry" DTrace probe
[perl5.git] / mydtrace.h
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CommitLineData
1/* mydtrace.h
2 *
3 * Copyright (C) 2008, 2010, 2011 by Larry Wall and others
4 *
5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
7 *
8 * Provides macros that wrap the various DTrace probes we use. We add
9 * an extra level of wrapping to encapsulate the _ENABLED tests.
10 */
11
12#if defined(USE_DTRACE) && defined(PERL_CORE)
13
14# include "perldtrace.h"
15
16# if defined(STAP_PROBE_ADDR) && !defined(DEBUGGING)
17
18/* SystemTap 1.2 uses a construct that chokes on passing a char array
19 * as a char *, in this case hek_key in struct hek. Workaround it
20 * with a temporary.
21 */
22
23# define ENTRY_PROBE(func, file, line, stash) \
24 if (PERL_SUB_ENTRY_ENABLED()) { \
25 const char *tmp_func = func; \
26 PERL_SUB_ENTRY(tmp_func, file, line, stash); \
27 }
28
29# define RETURN_PROBE(func, file, line, stash) \
30 if (PERL_SUB_RETURN_ENABLED()) { \
31 const char *tmp_func = func; \
32 PERL_SUB_RETURN(tmp_func, file, line, stash); \
33 }
34
35# define OP_ENTRY_PROBE(name) \
36 if (PERL_OP_ENTRY_ENABLED()) { \
37 const char *tmp_name = name; \
38 PERL_OP_ENTRY(tmp_name, file, line, stash); \
39 }
40
41# else
42
43# define ENTRY_PROBE(func, file, line, stash) \
44 if (PERL_SUB_ENTRY_ENABLED()) { \
45 PERL_SUB_ENTRY(func, file, line, stash); \
46 }
47
48# define RETURN_PROBE(func, file, line, stash) \
49 if (PERL_SUB_RETURN_ENABLED()) { \
50 PERL_SUB_RETURN(func, file, line, stash); \
51 }
52
53# define OP_ENTRY_PROBE(name) \
54 if (PERL_OP_ENTRY_ENABLED()) { \
55 PERL_OP_ENTRY(name); \
56 }
57
58# endif
59
60# define PHASE_CHANGE_PROBE(new_phase, old_phase) \
61 if (PERL_PHASE_CHANGE_ENABLED()) { \
62 PERL_PHASE_CHANGE(new_phase, old_phase); \
63 }
64
65#else
66
67/* NOPs */
68# define ENTRY_PROBE(func, file, line, stash)
69# define RETURN_PROBE(func, file, line, stash)
70# define PHASE_CHANGE_PROBE(new_phase, old_phase)
71# define OP_ENTRY_PROBE(name)
72
73#endif
74
75/*
76 * Local variables:
77 * c-indentation-style: bsd
78 * c-basic-offset: 4
79 * indent-tabs-mode: nil
80 * End:
81 *
82 * ex: set ts=8 sts=4 sw=4 et:
83 */