[PATCH v2 0/4] run-command: new check_command helper

Hi,

Here's the second version of the patches incorporating input from Junio and Peff.

The first patch does all the work, the second patch uses it; basically, this is needed so the transport-helper code is able to check if the remote-helper child is stilll running. Without this support, the status of the remote-helper files and configuration can end up very badly when errors occur, to the point where the user is unable to use it any more.

The rest of the patches are for testing purposes only. I ran all the tests with these, and I didn't see any problems.

Felipe Contreras (4):
  run-command: add new check_command helper
  transport-helper: check if remote helper is alive
  tmp: remote-helper: add timers to catch errors
  tmp: run-command: code to exercise check_command

 git-remote-testgit        | 12 ++++++++++
 run-command.c             | 58 ++++++++++++++++++++++++++++++++++++++++++-----
 run-command.h             |  5 ++++
 t/t5801-remote-helpers.sh | 19 ++++++++++++++++
 transport-helper.c        | 11 +++++++++
 5 files changed, 99 insertions(+), 6 deletions(-)