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[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
35# else
36
37# define ENTRY_PROBE(func, file, line, stash) \
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38 if (PERL_SUB_ENTRY_ENABLED()) { \
39 PERL_SUB_ENTRY(func, file, line, stash); \
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40 }
41
ee3ace03 42# define RETURN_PROBE(func, file, line, stash) \
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43 if (PERL_SUB_RETURN_ENABLED()) { \
44 PERL_SUB_RETURN(func, file, line, stash); \
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45 }
46
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47# endif
48
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49# define PHASE_CHANGE_PROBE(new_phase, old_phase) \
50 if (PERL_PHASE_CHANGE_ENABLED()) { \
51 PERL_PHASE_CHANGE(new_phase, old_phase); \
52 }
53
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54#else
55
56/* NOPs */
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57# define ENTRY_PROBE(func, file, line, stash)
58# define RETURN_PROBE(func, file, line, stash)
cb3f8189 59# define PHASE_CHANGE_PROBE(new_phase, old_phase)
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60
61#endif
62
63/*
64 * Local variables:
65 * c-indentation-style: bsd
66 * c-basic-offset: 4
67 * indent-tabs-mode: t
68 * End:
69 *
70 * ex: set ts=8 sts=4 sw=4 noet:
71 */