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|
#===----------------------------------------------------------------------===##
#
# Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
# See https://llvm.org/LICENSE.txt for license information.
# SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
#
#===----------------------------------------------------------------------===##
import platform
import os
import posixpath
import ntpath
from libcxx.test import tracing
from libcxx.util import executeCommand
class Executor(object):
def __init__(self):
self.target_info = None
def run(self, exe_path, cmd, local_cwd, file_deps=None, env=None):
"""Execute a command.
Be very careful not to change shared state in this function.
Executor objects are shared between python processes in `lit -jN`.
Args:
exe_path: str: Local path to the executable to be run
cmd: [str]: subprocess.call style command
local_cwd: str: Local path to the working directory
file_deps: [str]: Files required by the test
env: {str: str}: Environment variables to execute under
Returns:
cmd, out, err, exitCode
"""
raise NotImplementedError
def merge_environments(self, current_env, updated_env):
"""Merges two execution environments.
If both environments contain the PATH variables, they are also merged
using the proper separator.
"""
result_env = dict(current_env)
for k, v in updated_env.items():
if k == 'PATH' and self.target_info:
self.target_info.add_path(result_env, v)
else:
result_env[k] = v
return result_env
class LocalExecutor(Executor):
def __init__(self):
super(LocalExecutor, self).__init__()
self.is_windows = platform.system() == 'Windows'
def run(self, exe_path, cmd=None, work_dir='.', file_deps=None, env=None):
cmd = cmd or [exe_path]
if work_dir == '.':
work_dir = os.getcwd()
if env:
env = self.merge_environments(os.environ, env)
out, err, rc = executeCommand(cmd, cwd=work_dir, env=env)
return (cmd, out, err, rc)
class PrefixExecutor(Executor):
"""Prefix an executor with some other command wrapper.
Most useful for setting ulimits on commands, or running an emulator like
qemu and valgrind.
"""
def __init__(self, commandPrefix, chain):
super(PrefixExecutor, self).__init__()
self.commandPrefix = commandPrefix
self.chain = chain
def run(self, exe_path, cmd=None, work_dir='.', file_deps=None, env=None):
cmd = cmd or [exe_path]
return self.chain.run(exe_path, self.commandPrefix + cmd, work_dir,
file_deps, env=env)
class PostfixExecutor(Executor):
"""Postfix an executor with some args."""
def __init__(self, commandPostfix, chain):
super(PostfixExecutor, self).__init__()
self.commandPostfix = commandPostfix
self.chain = chain
def run(self, exe_path, cmd=None, work_dir='.', file_deps=None, env=None):
cmd = cmd or [exe_path]
return self.chain.run(cmd + self.commandPostfix, work_dir, file_deps,
env=env)
class TimeoutExecutor(PrefixExecutor):
"""Execute another action under a timeout.
Deprecated. http://reviews.llvm.org/D6584 adds timeouts to LIT.
"""
def __init__(self, duration, chain):
super(TimeoutExecutor, self).__init__(
['timeout', duration], chain)
class RemoteExecutor(Executor):
def __init__(self):
super(RemoteExecutor, self).__init__()
self.local_run = executeCommand
def remote_temp_dir(self):
return self._remote_temp(True)
def remote_temp_file(self):
return self._remote_temp(False)
def _remote_temp(self, is_dir):
raise NotImplementedError()
def copy_in(self, local_srcs, remote_dsts):
# This could be wrapped up in a tar->scp->untar for performance
# if there are lots of files to be copied/moved
for src, dst in zip(local_srcs, remote_dsts):
self._copy_in_file(src, dst)
def _copy_in_file(self, src, dst):
raise NotImplementedError()
def delete_remote(self, remote):
try:
self._execute_command_remote(['rm', '-rf', remote])
except OSError:
# TODO: Log failure to delete?
pass
def run(self, exe_path, cmd=None, work_dir='.', file_deps=None, env=None):
target_exe_path = None
target_cwd = None
try:
target_cwd = self.remote_temp_dir()
executable_name = 'libcxx_test.exe'
if self.target_info.is_windows():
target_exe_path = ntpath.join(target_cwd, executable_name)
else:
target_exe_path = posixpath.join(target_cwd, executable_name)
if cmd:
# Replace exe_path with target_exe_path.
cmd = [c if c != exe_path else target_exe_path for c in cmd]
else:
cmd = [target_exe_path]
srcs = [exe_path]
dsts = [target_exe_path]
if file_deps is not None:
dev_paths = [os.path.join(target_cwd, os.path.basename(f))
for f in file_deps]
srcs.extend(file_deps)
dsts.extend(dev_paths)
self.copy_in(srcs, dsts)
# When testing executables that were cross-compiled on Windows for
# Linux, we may need to explicitly set the execution permission to
# avoid the 'Permission denied' error:
chmod_cmd = ['chmod', '+x', target_exe_path]
# TODO(jroelofs): capture the copy_in and delete_remote commands,
# and conjugate them with '&&'s around the first tuple element
# returned here:
return self._execute_command_remote(chmod_cmd + ['&&'] + cmd,
target_cwd,
env)
finally:
if target_cwd:
self.delete_remote(target_cwd)
def _execute_command_remote(self, cmd, remote_work_dir='.', env=None):
raise NotImplementedError()
class SSHExecutor(RemoteExecutor):
def __init__(self, host, username=None):
super(SSHExecutor, self).__init__()
self.user_prefix = username + '@' if username else ''
self.host = host
self.scp_command = 'scp'
self.ssh_command = 'ssh'
# TODO(jroelofs): switch this on some -super-verbose-debug config flag
if False:
self.local_run = tracing.trace_function(
self.local_run, log_calls=True, log_results=True,
label='ssh_local')
def _remote_temp(self, is_dir):
# TODO: detect what the target system is, and use the correct
# mktemp command for it. (linux and darwin differ here, and I'm
# sure windows has another way to do it)
# Not sure how to do suffix on osx yet
dir_arg = '-d' if is_dir else ''
cmd = 'mktemp -q {} /tmp/libcxx.XXXXXXXXXX'.format(dir_arg)
_, temp_path, err, exitCode = self._execute_command_remote([cmd])
temp_path = temp_path.strip()
if exitCode != 0:
raise RuntimeError(err)
return temp_path
def _copy_in_file(self, src, dst):
scp = self.scp_command
remote = self.host
remote = self.user_prefix + remote
cmd = [scp, '-p', src, remote + ':' + dst]
self.local_run(cmd)
def _export_command(self, env):
if not env:
return []
export_cmd = ['export']
for k, v in env.items():
v = v.replace('\\', '\\\\')
if k == 'PATH':
# Pick up the existing paths, so we don't lose any commands
if self.target_info and self.target_info.is_windows():
export_cmd.append('PATH="%s;%PATH%"' % v)
else:
export_cmd.append('PATH="%s:$PATH"' % v)
else:
export_cmd.append('"%s"="%s"' % (k, v))
return export_cmd
def _execute_command_remote(self, cmd, remote_work_dir='.', env=None):
remote = self.user_prefix + self.host
ssh_cmd = [self.ssh_command, '-oBatchMode=yes', remote]
export_cmd = self._export_command(env)
remote_cmd = ' '.join(cmd)
if export_cmd:
remote_cmd = ' '.join(export_cmd) + ' && ' + remote_cmd
if remote_work_dir != '.':
remote_cmd = 'cd ' + remote_work_dir + ' && ' + remote_cmd
out, err, rc = self.local_run(ssh_cmd + [remote_cmd])
return (remote_cmd, out, err, rc)
|
