csrc/node-v0.10.24/src/node_systemtap.d

// 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();
};