def checkpoint():
"""Perform a blocking checkpoint request and rename the checkpoint files."""
global gn_index_suffix
remove_stale_ptrace_files()
s_checkpoint_re = "ckpt_.+\.dmtcp\..*"
l_ckpts_before = [os.path.join(os.environ["DMTCP_TMPDIR"], x) \
for x in os.listdir(os.environ["DMTCP_TMPDIR"]) \
if re.search(s_checkpoint_re, x) != None]
#fredutil.fred_debug("List ckpts before: %s" % str(l_ckpts_before))
# Request the checkpoint.
n_peers = get_num_peers()
cmdstr = ["dmtcp_command", "--quiet", "bc"]
fredutil.execute_shell_command_and_wait(cmdstr)
fredutil.fred_debug("After blocking checkpoint command.")
l_new_ckpts = []
# There is what seems to be a DMTCP bug: the blocking checkpoint
# can actually return before the checkpoints are written. It is
# rare.
while len(l_new_ckpts) < n_peers:
l_ckpts_after = [os.path.join(os.environ["DMTCP_TMPDIR"], x) \
for x in os.listdir(os.environ["DMTCP_TMPDIR"]) \
if x.startswith("ckpt_") and x.endswith("dmtcp")]
#fredutil.fred_debug("List ckpts after: %s" % str(l_ckpts_after))
l_new_ckpts = [x for x in l_ckpts_after if x not in l_ckpts_before]
time.sleep(0.001)
for f in l_new_ckpts:
fredutil.fred_debug("Renaming ckpt file from '%s' to '%s.%d'" %
(f, f, gn_index_suffix))
os.rename(f, "%s.%d" % (f, gn_index_suffix))
gn_index_suffix += 1
def checkpoint():
"""Perform a blocking checkpoint request and rename the checkpoint files."""
global gn_index_suffix
remove_stale_ptrace_files()
s_checkpoint_re = "ckpt_.+\.dmtcp\..*"
l_ckpts_before = [os.path.join(os.environ["DMTCP_TMPDIR"], x) \
for x in os.listdir(os.environ["DMTCP_TMPDIR"]) \
if re.search(s_checkpoint_re, x) != None]
#fredutil.fred_debug("List ckpts before: %s" % str(l_ckpts_before))
# Request the checkpoint.
n_peers = get_num_peers()
cmdstr = ["dmtcp_command", "--quiet", "bc"]
fredutil.execute_shell_command_and_wait(cmdstr)
fredutil.fred_debug("After blocking checkpoint command.")
l_new_ckpts = []
# There is what seems to be a DMTCP bug: the blocking checkpoint
# can actually return before the checkpoints are written. It is
# rare.
while len(l_new_ckpts) < n_peers:
l_ckpts_after = [os.path.join(os.environ["DMTCP_TMPDIR"], x) \
for x in os.listdir(os.environ["DMTCP_TMPDIR"]) \
if x.startswith("ckpt_") and x.endswith("dmtcp")]
#fredutil.fred_debug("List ckpts after: %s" % str(l_ckpts_after))
l_new_ckpts = [x for x in l_ckpts_after if x not in l_ckpts_before]
time.sleep(0.001)
for f in l_new_ckpts:
fredutil.fred_debug("Renaming ckpt file from '%s' to '%s.%d'" %
(f, f, gn_index_suffix))
os.rename(f, "%s.%d" % (f, gn_index_suffix))
gn_index_suffix += 1
def kill_coordinator(n_port):
"""Kills the coordinator on given port."""
try:
fredutil.execute_shell_command_and_wait(["dmtcp_command", "--quiet", "-p", str(n_port), "q"])
except subprocess.CalledProcessError:
pass
except:
raise
def kill_coordinator(n_port):
"""Kills the coordinator on given port."""
try:
fredutil.execute_shell_command_and_wait(
["dmtcp_command", "--quiet", "-p",
str(n_port), "q"])
except subprocess.CalledProcessError:
pass
except:
raise
def start_coordinator(n_port):
"""Start a coordinator on given port. Return False on error."""
status = fredutil.execute_shell_command_and_wait(["dmtcp_coordinator", "--daemon", "-p", str(n_port)])
return status == 0
def start_coordinator(n_port):
"""Start a coordinator on given port. Return False on error."""
status = fredutil.execute_shell_command_and_wait(
["dmtcp_coordinator", "--daemon", "-p",
str(n_port)])
return status == 0
