def startXvfb(self, startArgs, machine):
for _ in range(5):
self.diag.info("Starting Xvfb using args " + repr(startArgs))
# Ignore job control signals for remote processes
# Otherwise the ssh process gets killed, but the stuff it's started remotely doesn't, and we leak Xvfb processes
preexec_fn = None if machine == "localhost" else self.ignoreSignals
displayProc = subprocess.Popen(startArgs, preexec_fn=preexec_fn, stdin=open(os.devnull), stdout=subprocess.PIPE, stderr=open(os.devnull, "w"))
line = plugins.retryOnInterrupt(displayProc.stdout.readline)
if "Time Out!" in line:
displayProc.wait()
displayProc.stdout.close()
self.diag.info("Timed out waiting for Xvfb to come up")
# We try again and hope for a better process ID!
continue
try:
displayNum, pid = map(int, line.strip().split(","))
displayProc.stdout.close()
return self.getDisplayName(machine, displayNum), pid, displayProc
except ValueError: #pragma : no cover - should never happen, just a fail-safe
sys.stderr.write("ERROR: Failed to parse startXvfb.py line :\n " + line + "\n")
displayProc.stdout.close()
return None, None, None
messages = "Failed to start Xvfb in 5 attempts, giving up"
plugins.printWarning(messages)
return None, None, None
def findPerformanceMachines(self, test, fileStem):
perfMachines = []
resources = test.getCompositeConfigValue("performance_test_resource", fileStem)
for resource in resources:
perfMachines += plugins.retryOnInterrupt(self.queueMachineInfo.findResourceMachines, resource)
rawPerfMachines = MachineInfoFinder.findPerformanceMachines(self, test, fileStem)
for machine in rawPerfMachines:
if machine != "any":
perfMachines += self.queueMachineInfo.findActualMachines(machine)
if "any" in rawPerfMachines and len(resources) == 0:
return rawPerfMachines
else:
return perfMachines
def startXvfb(self, startArgs, machine):
for i in range(5):
self.diag.info("Starting Xvfb using args " + repr(startArgs))
self.displayProc = subprocess.Popen(startArgs, stdin=open(os.devnull), stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
line = plugins.retryOnInterrupt(self.displayProc.stdout.readline)
if "Time Out!" in line:
self.displayProc.wait()
self.displayProc.stdout.close()
self.diag.info("Timed out waiting for Xvfb to come up")
# We try again and hope for a better process ID!
continue
try:
displayNum, pid = map(int, line.strip().split(","))
self.displayProc.stdout.close()
return self.getDisplayName(machine, displayNum), pid
except ValueError: #pragma : no cover - should never happen, just a fail-safe
plugins.log.info("Failed to parse line :\n " + line + self.displayProc.stdout.read())
return None, None
messages = "Failed to start Xvfb in 5 attempts, giving up"
plugins.printWarning(messages)
return None, None
def wait(self, process):
try:
plugins.retryOnInterrupt(process.wait)
except OSError: # pragma: no cover - workaround for Python bugs only
pass # safest, as there are python bugs in this area
def findRunningJobs(self, machine):
return plugins.retryOnInterrupt(self._findRunningJobs, machine)
