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| author | Avdi Grimm <avdi@users.noreply.github.com> | 2020-05-16 16:29:05 -0500 |
|---|---|---|
| committer | Samuel Williams <samuel.williams@oriontransfer.co.nz> | 2020-05-18 17:39:21 +1200 |
| commit | afd84c58acfe9126d31c3f7673b049f11b67b095 (patch) | |
| tree | 24c00a573b40e737cd8a297766243c3daf2d55ce /doc | |
| parent | 0e5a58b6bf6aae72b6290a8d68e0a1b6d9eb4f79 (diff) | |
Document how to enable USDT method entry/exit tracepoints
Notes
Notes:
Merged: https://github.com/ruby/ruby/pull/3115
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/dtrace_probes.rdoc | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/doc/dtrace_probes.rdoc b/doc/dtrace_probes.rdoc index d2cdd56902..afb4216876 100644 --- a/doc/dtrace_probes.rdoc +++ b/doc/dtrace_probes.rdoc @@ -56,10 +56,16 @@ with when they are fired and the arguments they take: methodname name of the method about to be executed (a string) filename the file name where the method is _being called_ (a string) lineno the line number where the method is _being called_ (an int) + + *NOTE*: will only be fired if tracing is enabled, e.g. with: +TracePoint.new{}.enable+. + See {ticket #14104}[https://bugs.ruby-lang.org/issues/14104] for more details. [ruby:::method-return(classname, methodname, filename, lineno);] This probe is fired just after a method has returned. The arguments are the same as "ruby:::method-entry". + + *NOTE*: will only be fired if tracing is enabled, e.g. with: +TracePoint.new{}.enable+. + See {ticket #14104}[https://bugs.ruby-lang.org/issues/14104] for more details. [ruby:::cmethod-entry(classname, methodname, filename, lineno);] This probe is fired just before a C method is entered. The arguments are the |