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"op-entry" DTrace probe
[perl5.git] / mydtrace.h
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1/* mydtrace.h
2 *
2eee27d7 3 * Copyright (C) 2008, 2010, 2011 by Larry Wall and others
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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
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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
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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
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41# else
42
43# define ENTRY_PROBE(func, file, line, stash) \
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44 if (PERL_SUB_ENTRY_ENABLED()) { \
45 PERL_SUB_ENTRY(func, file, line, stash); \
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46 }
47
ee3ace03 48# define RETURN_PROBE(func, file, line, stash) \
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49 if (PERL_SUB_RETURN_ENABLED()) { \
50 PERL_SUB_RETURN(func, file, line, stash); \
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51 }
52
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53# define OP_ENTRY_PROBE(name) \
54 if (PERL_OP_ENTRY_ENABLED()) { \
55 PERL_OP_ENTRY(name); \
56 }
57
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58# endif
59
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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
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65#else
66
67/* NOPs */
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68# define ENTRY_PROBE(func, file, line, stash)
69# define RETURN_PROBE(func, file, line, stash)
cb3f8189 70# define PHASE_CHANGE_PROBE(new_phase, old_phase)
fe83c362 71# define OP_ENTRY_PROBE(name)
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72
73#endif
74
75/*
76 * Local variables:
77 * c-indentation-style: bsd
78 * c-basic-offset: 4
14d04a33 79 * indent-tabs-mode: nil
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80 * End:
81 *
14d04a33 82 * ex: set ts=8 sts=4 sw=4 et:
5ac1e9b2 83 */