Snow Leopard's DTrace does not enable some probes?
Snow Leopard's DTrace does not enable some probes?
- Subject: Snow Leopard's DTrace does not enable some probes?
- From: Tomas Zahradnicky <email@hidden>
- Date: Thu, 15 Oct 2009 17:07:13 +0200
| Dear Xcode Users,
after upgrading to Snow Leopard and Xcode Tools, I have noticed that my apps that use DTrace no longer work. I have looked at the generated assembly and I see nops properly placed in the code. Further digging revealed, that some of the probes are *disabled* despite they are defined in the .d file.
Since it worked in Leopard, I am suspecting a bug somewhere else, or someone sees a problem below?
This is how I call the probe: if( NFET_MAIN_START_ENABLED() ) { // <- this probe is always disabled despite enabled below! printf("enabled\n"); NFET_MAIN_START(); } else { printf("disabled\n"); } sleep(1);//app->Run(); NFET_MAIN_END();
This is how is the probe turned on in the .d file: nfet$target:::main-start { trace("main-start\n"); self->ts = walltimestamp; }
nfet$target:::main-end { trace("main-end\n"); self->ts = walltimestamp - self->ts; }
This is how the probe is defined: provider nfet { probe main__start(); probe main__end(); };
This is how I run dtrace (dtrace: Sun D 1.6.2): sudo dtrace -qs src/probes.d -c './build/Release/nfet'
Best Regards,
Tomas
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