# -*- makefile -*-

# This is a simple makefile which lives in a buildmaster/buildslave
# directory (next to the buildbot.tac file). It allows you to start/stop the
# master or slave by doing 'make start' or 'make stop'.

# The 'reconfig' target will tell a buildmaster to reload its config file.

# Note that a relative PYTHONPATH entry is relative to the current directory.

# On the Mac, the buildbot is started via the launchd mechanism as a
# LaunchAgent to give the slave a proper Mac UI environment for tests.  In
# order for this to work, the plist must be present and loaded by launchd, and
# the user must be logged in to the UI.  The plist is loaded by launchd at user
# login (and the job may have been initially started at that time too).  Our
# Mac build slaves are all set up this way, and have auto-login enabled, so
# "make start" should just work and do the right thing.
#
# When using launchd to start the job, it also needs to be used to stop the
# job.  Otherwise, launchd might try to restart the job when stopped manually
# by SIGTERM.  Using SIGHUP for reconfig is safe with launchd.
#
# Because it's possible to have more than one slave on a machine (for testing),
# this tests to make sure that the slave is in the known slave location,
# /b/slave, which is what the LaunchAgent operates on.
USE_LAUNCHD := \
  $(shell [ -f ~/Library/LaunchAgents/org.chromium.buildbot.slave.plist ] && \
          [[ "$$(pwd -P)" = */b/build/slave ]] && \
          echo 1)

# Note that initscripts and make can conspire to leave child processes with
# an unlimited maximum stack size. This causes the Linux kernel to use a
# strange VM layout.
# We therefore explicitly set a (typical) stack limit.
start:
ifneq ($(USE_LAUNCHD),1)
	sh -c 'ulimit -s 8192; python run_slave.py --no_save -y buildbot.tac'
else
	launchctl start org.chromium.buildbot.slave
endif

stop:
ifneq ($(USE_LAUNCHD),1)
	if `test -f twistd.pid`; then kill `cat twistd.pid`; fi;
else
	launchctl stop org.chromium.buildbot.slave
endif

stopall:
	for t in twistd.pid \
	         $(wildcard /c/*/build/slave/twistd.pid) \
	         $(wildcard ../nested/*/build/slave/twistd.pid); do \
	  if `test -f $$t`; then kill `cat $$t`; fi; \
	done

reconfig:
	kill -HUP `cat twistd.pid`

log:
	tail -F twistd.log

wait:
	while `test -f twistd.pid`; do sleep 1; done;

restart: stop wait start log

status:
	test -f twistd.pid && ps cax | awk '{ print $$1 }' | grep `cat twistd.pid` -w