node/src/node_systemtap.d at master · bfsoft/node · GitHub

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// Copyright Joyent, Inc. and other Node contributors.

// Permission is hereby granted, free of charge, to any person obtaining a

// copy of this software and associated documentation files (the

// "Software"), to deal in the Software without restriction, including

// without limitation the rights to use, copy, modify, merge, publish,

// distribute, sublicense, and/or sell copies of the Software, and to permit

// persons to whom the Software is furnished to do so, subject to the

// following conditions:

// The above copyright notice and this permission notice shall be included

// in all copies or substantial portions of the Software.

// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF

// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN

// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,

// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR

// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE

// USE OR OTHER DEALINGS IN THE SOFTWARE.

// Hints:

// This .d defines compiled in probes

// probes are handles (untyped pointers)

// v8 forward declared objs (dtrace_connection_t) are defined

// in node_dtrace.cc which builds an InitDtrace object which

// gets populated with the probes

// The probes gather the following:

// PROBE_REQUEST(req, fd, remote, port, buffered)

// PROBE_OTHER(fd, remote, port, buffered)

// other notes:

// using any PROBE_ENABLED() macros in dtrace.cc sdt broke it

// can only pass strings/ints/primitives not dtrace_connection_t

// conn or other structs

// verify probe existence by using

// $ stap -l 'process("out/Release/node").mark("*")'

// TODO: write .stp scripts (node.stp, node_v8ustack.stp + ???)

provider node {

probe http__client__request(string, int, string, int, int);

probe http__client__response(int, string, int, int);

probe http__server__request(string, int, string, int, int);

probe http__server__response(int, string, int, int);

probe net__server__connection(int, string, int, int);

probe net__socket__read(int, string, int, int);

probe net__socket__write(int, string, int, int);

probe net__stream__end(int, string, int, int);

probe gc__done();

probe gc__start();

};

node/src/node_systemtap.d at master · bfsoft/node · GitHub

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