def is_running():
"""Return True if dmtcp_command reports RUNNING as 'yes'."""
cmd = ["dmtcp_command", "s"]
output = fredutil.execute_shell_command(cmd)
if output != None:
m = re.search("RUNNING=(\w+)", output, re.MULTILINE)
if m != None:
running = m.group(1)
return running == "yes"
else:
return False
else:
fredutil.fred_error("ERROR: Can't get RUNNING. " "Did the coordinator die?")
return False
def is_running():
"""Return True if dmtcp_command reports RUNNING as 'yes'."""
cmd = ["dmtcp_command", "s"]
output = fredutil.execute_shell_command(cmd)
if output != None:
m = re.search('RUNNING=(\w+)', output, re.MULTILINE)
if m != None:
running = m.group(1)
return running == 'yes'
else:
return False
else:
fredutil.fred_error("ERROR: Can't get RUNNING. "
"Did the coordinator die?")
return False
def get_num_peers():
"""Return NUM_PEERS from 'dmtcp_command s' as an integer."""
cmd = ["dmtcp_command", "s"]
output = fredutil.execute_shell_command(cmd)
if output != None:
exp = "^NUM_PEERS=(\d+)"
m = re.search(exp, output, re.MULTILINE)
if m != None:
n_peers = m.group(1)
return int(n_peers)
else:
if output == "":
fredutil.fred_error("Output was NULL string")
return 0 # Heuristically guessing 0 peers, could be a problem
else:
fredutil.fred_error("ERROR: Can't get NUM_PEERS. " "Did the coordinator die?")
return 0
def get_num_peers():
"""Return NUM_PEERS from 'dmtcp_command s' as an integer."""
cmd = ['dmtcp_command', 's']
output = fredutil.execute_shell_command(cmd)
if output != None:
exp = '^NUM_PEERS=(\d+)'
m = re.search(exp, output, re.MULTILINE)
if m != None:
n_peers = m.group(1)
return int(n_peers)
else:
if output == "":
fredutil.fred_error("Output was NULL string")
return 0 # Heuristically guessing 0 peers, could be a problem
else:
fredutil.fred_error("ERROR: Can't get NUM_PEERS. "
"Did the coordinator die?")
return 0
def _execute_fred_command(s_cmd, s_arg=None):
"""Execute the given fred_command command and return its output."""
global g_child_subprocess
fredutil.fred_assert(s_cmd in ["status", "info", "break", "continue"])
l_cmd = ["%s/fred_command" % GS_FREDHIJACK_PATH]
fredutil.fred_assert(get_pid() != -1)
s_path = "%s/fred-shm.%d" % (os.environ["DMTCP_TMPDIR"], get_pid())
l_cmd.append("--%s" % s_cmd)
if s_arg != None:
l_cmd.append(s_arg)
l_cmd.append(s_path)
fredutil.fred_debug("Executing fred_command: %s" % l_cmd)
if s_cmd == "break":
fredutil.fred_assert(g_child_subprocess == None)
g_child_subprocess = fredutil.execute_background_shell_command(l_cmd)
s_output = ""
else:
s_output = fredutil.execute_shell_command(l_cmd)
return s_output
def _execute_fred_command(s_cmd, s_arg=None):
"""Execute the given fred_command command and return its output."""
global g_child_subprocess
fredutil.fred_assert(s_cmd in ["status", "info", "break", "continue"])
l_cmd = ["%s/fred_command" % GS_FREDHIJACK_PATH]
fredutil.fred_assert(get_virtual_inferior_pid() != -1)
s_path = "%s/fred-shm.%d" % (os.environ["DMTCP_TMPDIR"],
get_virtual_inferior_pid())
l_cmd.append("--%s" % s_cmd)
if s_arg != None:
l_cmd.append(s_arg)
l_cmd.append(s_path)
fredutil.fred_debug("Executing fred_command: %s" % l_cmd)
if s_cmd == "break":
fredutil.fred_assert(g_child_subprocess == None)
g_child_subprocess = fredutil.execute_background_shell_command(l_cmd)
s_output = ""
else:
s_output = fredutil.execute_shell_command(l_cmd)
return s_output
