Created
August 31, 2012 17:34
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Dtrace probes in your Golang code
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| #include "probes.h" | |
| void Ping() { | |
| GOLANG_PING(); | |
| } | |
| bool Ping_enabled() { | |
| return GOLANG_PING_ENABLED(); | |
| } | |
| void Pong() { | |
| GOLANG_PONG(); | |
| } | |
| bool Pong_enabled() { | |
| return GOLANG_PONG_ENABLED(); | |
| } |
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| /* | |
| Generate probes.h header file with: | |
| dtrace -o probes.h -h -s probes.d | |
| */ | |
| provider golang { | |
| probe ping(); | |
| probe pong(); | |
| }; |
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Demo of static Dtrace probes in Golang. Run with
go run goarena.go, spectate withsudo dtrace -s spectator.d.I failed at making Golang's cgo work nicely with a static library, which is why probes.c needs to be compiled as a shared library. Otherwise, dtrace's probe.h file could have been used directly.
Golang bindings for Chris Andrew's libusdt would probably allow more user-friendly dtrace probes in similar programs.