12-07-2012
Quote:
Originally Posted by
Corona688
Don't install a signal handler then, and have the signal cause the coredump directly.
He'd likely just get a different signal handler - it's the signal handler that causes the core dump. It's also likely that the default signal handling is deemed insufficient for some reason, thus the custom signal handler.
What's the exact external command used to generate the core file? Is it dumping everything?
What's the output from pstack run against the core file? Does that show the full stack trace?
What's the output from dbx when you load the core file? Core file mismatch perhaps? What does it say about what was executing when the core was dumped?
What's the output from "where -h"? How about "where -v"?
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LEARN ABOUT FREEBSD
gcore
GCORE(1) BSD General Commands Manual GCORE(1)
NAME
gcore -- get core images of running process
SYNOPSIS
gcore [-f] [-s] [-c core] [executable] pid
DESCRIPTION
The gcore utility creates a core image of the specified process, suitable for use with gdb(1). By default, the core is written to the file
``core.<pid>''. The process identifier, pid, must be given on the command line.
The following options are available:
-c Write the core file to the specified file instead of ``core.<pid>''.
-f Dumps all available segments, excluding only malformed and undumpable segments. Unlike the default invocation, this flag dumps map-
pings of devices which may invalidate the state of device transactions or trigger other unexpected behavior. As a result, this flag
should only be used when the behavior of the application and any devices it has mapped is fully understood and any side effects can
be controlled or tolerated.
-s Stop the process while gathering the core image, and resume it when done. This guarantees that the resulting core dump will be in a
consistent state. The process is resumed even if it was already stopped. The same effect can be achieved manually with kill(1).
FILES
core.<pid> the core image
HISTORY
A gcore utility appeared in 4.2BSD.
BUGS
Because of the ptrace(2) usage gcore may not work with processes which are actively being investigated with truss(1) or gdb(1). Addition-
ally, interruptable sleeps may exit with EINTR.
The gcore utility is not compatible with the original 4.2BSD version.
BSD
July 14, 2010 BSD