K 10
svn:author
V 3
jhb
K 8
svn:date
V 27
2010-12-28T19:26:57.679018Z
K 7
svn:log
V 1264
MFC 199805,203532,204329,210063,210065:
- Change gcore in order to get rid of the procfs accesses and use FreeBSD's
  specific sysctls and ptrace interfaces.
  This change switches a bit gcore POLA that is summarized here:
  - now gcore can recognize threads within the process and handle dumps
    on thread-scope
  - the process to be analyzed will be stopped during its gcore run
  - gcore may not work with processes which are actively being analyzed
    by gdb or truss
  - the ptrace interface may cause syscalls to return EINTR, thus
    interferring with signals handling within the process
- Fix gcore so that it can have the '-s' flag without hanging.
- Fix the way the segments are included in the gcore outputs (with the
  default invokation):
  - Right now if segments are not writable are not included. Remove this.
  - Right now if a segment is mapped with NOCORE the check is not honoured.
    Change this by checking the newly added flag, from libutil,
    KVME_FLAG_NOCOREDUMP.

  Besides that, add a new flag (-f) that forces a 'full' dump of all the
  segments excluding just the malformed ones. This might be used very
  carefully as, among the reported segments, there could be memory
  mapped areas that could be vital to program execution.

END