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Merge 3.3 (#11599)

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This commit is contained in:
Éric Araujo 2014-03-13 05:59:31 -04:00
commit f1e8c70cf0
4 changed files with 52 additions and 19 deletions
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55
Lib/distutils/spawn.py
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@ -10,6 +10,7 @@ import sys
import os
from distutils.errors import DistutilsPlatformError, DistutilsExecError
from distutils.debug import DEBUG
from distutils import log
def spawn(cmd, search_path=1, verbose=0, dry_run=0):
@ -28,10 +29,15 @@ def spawn(cmd, search_path=1, verbose=0, dry_run=0):
Raise DistutilsExecError if running the program fails in any way; just
return on success.
"""
# cmd is documented as a list, but just in case some code passes a tuple
# in, protect our %-formatting code against horrible death
cmd = list(cmd)
if os.name == 'posix':
_spawn_posix(cmd, search_path, dry_run=dry_run)
elif os.name == 'nt':
_spawn_nt(cmd, search_path, dry_run=dry_run)
elif os.name == 'os2':
_spawn_os2(cmd, search_path, dry_run=dry_run)
else:
raise DistutilsPlatformError(
"don't know how to spawn programs on platform '%s'" % os.name)
@ -65,12 +71,16 @@ def _spawn_nt(cmd, search_path=1, verbose=0, dry_run=0):
rc = os.spawnv(os.P_WAIT, executable, cmd)
except OSError as exc:
# this seems to happen when the command isn't found
if not DEBUG:
cmd = executable
raise DistutilsExecError(
"command '%s' failed: %s" % (cmd[0], exc.args[-1]))
"command %r failed: %s" % (cmd, exc.args[-1]))
if rc != 0:
# and this reflects the command running but failing
if not DEBUG:
cmd = executable
raise DistutilsExecError(
"command '%s' failed with exit status %d" % (cmd[0], rc))
"command %r failed with exit status %d" % (cmd, rc))
if sys.platform == 'darwin':
from distutils import sysconfig
@ -81,8 +91,9 @@ def _spawn_posix(cmd, search_path=1, verbose=0, dry_run=0):
log.info(' '.join(cmd))
if dry_run:
return
executable = cmd[0]
exec_fn = search_path and os.execvp or os.execv
exec_args = [cmd[0], cmd]
env = None
if sys.platform == 'darwin':
global _cfg_target, _cfg_target_split
if _cfg_target is None:
@ -103,17 +114,23 @@ def _spawn_posix(cmd, search_path=1, verbose=0, dry_run=0):
env = dict(os.environ,
MACOSX_DEPLOYMENT_TARGET=cur_target)
exec_fn = search_path and os.execvpe or os.execve
exec_args.append(env)
pid = os.fork()
if pid == 0: # in the child
try:
exec_fn(*exec_args)
if env is None:
exec_fn(executable, cmd)
else:
exec_fn(executable, cmd, env)
except OSError as e:
sys.stderr.write("unable to execute %s: %s\n"
% (cmd[0], e.strerror))
if not DEBUG:
cmd = executable
sys.stderr.write("unable to execute %r: %s\n"
% (cmd, e.strerror))
os._exit(1)
sys.stderr.write("unable to execute %s for unknown reasons" % cmd[0])
if not DEBUG:
cmd = executable
sys.stderr.write("unable to execute %r for unknown reasons" % cmd)
os._exit(1)
else: # in the parent
# Loop until the child either exits or is terminated by a signal
@ -125,26 +142,34 @@ def _spawn_posix(cmd, search_path=1, verbose=0, dry_run=0):
import errno
if exc.errno == errno.EINTR:
continue
if not DEBUG:
cmd = executable
raise DistutilsExecError(
"command '%s' failed: %s" % (cmd[0], exc.args[-1]))
"command %r failed: %s" % (cmd, exc.args[-1]))
if os.WIFSIGNALED(status):
if not DEBUG:
cmd = executable
raise DistutilsExecError(
"command '%s' terminated by signal %d"
% (cmd[0], os.WTERMSIG(status)))
"command %r terminated by signal %d"
% (cmd, os.WTERMSIG(status)))
elif os.WIFEXITED(status):
exit_status = os.WEXITSTATUS(status)
if exit_status == 0:
return # hey, it succeeded!
else:
if not DEBUG:
cmd = executable
raise DistutilsExecError(
"command '%s' failed with exit status %d"
% (cmd[0], exit_status))
"command %r failed with exit status %d"
% (cmd, exit_status))
elif os.WIFSTOPPED(status):
continue
else:
if not DEBUG:
cmd = executable
raise DistutilsExecError(
"unknown error executing '%s': termination status %d"
% (cmd[0], status))
"unknown error executing %r: termination status %d"
% (cmd, status))
def find_executable(executable, path=None):
"""Tries to find 'executable' in the directories listed in 'path'.