数据库发生错误。

// 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.

probe node_net_server_connection = process("node").mark("net__server__connection")
{
  remote = user_string($arg2);
  port = $arg3;
  fd = $arg4;

  probestr = sprintf("%s(remote=%s, port=%d, fd=%d)",
    $$name,
    remote,
    port,
    fd);
}

probe node_net_stream_end = process("node").mark("net__stream__end")
{
  remote = user_string($arg2);
  port = $arg3;
  fd = $arg4;

  probestr = sprintf("%s(remote=%s, port=%d, fd=%d)",
    $$name,
    remote,
    port,
    fd);
}

probe node_http_server_request = process("node").mark("http__server__request")
{
  remote = user_string($arg3);
  port = $arg4;
  method = user_string($arg5);
  url = user_string($arg6);
  fd = $arg7;

  probestr = sprintf("%s(remote=%s, port=%d, method=%s, url=%s, fd=%d)",
    $$name,
    remote,
    port,
    method,
    url,
    fd);
}

probe node_http_server_response = process("node").mark("http__server__response")
{
  remote = user_string($arg2);
  port = $arg3;
  fd = $arg4;

  probestr = sprintf("%s(remote=%s, port=%d, fd=%d)",
    $$name,
    remote,
    port,
    fd);
}

probe node_http_client_request = process("node").mark("http__client__request")
{
  remote = user_string($arg3);
  port = $arg4;
  method = user_string($arg5);
  url = user_string($arg6);
  fd = $arg7;

  probestr = sprintf("%s(remote=%s, port=%d, method=%s, url=%s, fd=%d)",
    $$name,
    remote,
    port,
    method,
    url,
    fd);
}

probe node_http_client_response = process("node").mark("http__client__response")
{
  remote = user_string($arg2);
  port = $arg3;
  fd = $arg4;

  probestr = sprintf("%s(remote=%s, port=%d, fd=%d)",
    $$name,
    remote,
    port,
    fd);
}

probe node_gc_start = process("node").mark("gc__start")
{
  scavenge = 1 << 0;
  compact = 1 << 1;

  if ($arg1 == scavenge)
    type = "kGCTypeScavenge";
  else if ($arg1 == compact)
    type = "kGCTypeMarkSweepCompact";
  else
    type = "kGCTypeAll";

  flags = $arg2;

  probestr = sprintf("%s(type=%s,flags=%d)",
    $$name,
    type,
    flags);
}

probe node_gc_stop = process("node").mark("gc__done")
{
  scavenge = 1 << 0;
  compact = 1 << 1;

  if ($arg1 == scavenge)
    type = "kGCTypeScavenge";
  else if ($arg1 == compact)
    type = "kGCTypeMarkSweepCompact";
  else
    type = "kGCTypeAll";

  flags = $arg2;

  probestr = sprintf("%s(type=%s,flags=%d)",
    $$name,
    type,
    flags);
}