1 import os, signal, subprocess, sys
13 class InternalShellError(Exception):
14 def __init__(self, command, message):
15 self.command = command
16 self.message = message
18 kIsWindows = platform.system() == 'Windows'
20 # Don't use close_fds on Windows.
21 kUseCloseFDs = not kIsWindows
23 # Use temporary files to replace /dev/null on Windows.
24 kAvoidDevNull = kIsWindows
26 def executeCommand(command, cwd=None, env=None):
27 # Close extra file handles on UNIX (on Windows this cannot be done while
28 # also redirecting input).
29 close_fds = not kIsWindows
31 p = subprocess.Popen(command, cwd=cwd,
32 stdin=subprocess.PIPE,
33 stdout=subprocess.PIPE,
34 stderr=subprocess.PIPE,
35 env=env, close_fds=close_fds)
36 out,err = p.communicate()
39 # Detect Ctrl-C in subprocess.
40 if exitCode == -signal.SIGINT:
41 raise KeyboardInterrupt
43 return out, err, exitCode
45 def executeShCmd(cmd, cfg, cwd, results):
46 if isinstance(cmd, ShUtil.Seq):
48 res = executeShCmd(cmd.lhs, cfg, cwd, results)
49 return executeShCmd(cmd.rhs, cfg, cwd, results)
52 raise NotImplementedError,"unsupported test command: '&'"
55 res = executeShCmd(cmd.lhs, cfg, cwd, results)
57 res = executeShCmd(cmd.rhs, cfg, cwd, results)
60 res = executeShCmd(cmd.lhs, cfg, cwd, results)
65 res = executeShCmd(cmd.rhs, cfg, cwd, results)
68 raise ValueError,'Unknown shell command: %r' % cmd.op
70 assert isinstance(cmd, ShUtil.Pipeline)
72 input = subprocess.PIPE
76 # To avoid deadlock, we use a single stderr stream for piped
77 # output. This is null until we have seen some output using
79 for i,j in enumerate(cmd.commands):
80 # Apply the redirections, we use (N,) as a sentinal to indicate stdin,
81 # stdout, stderr for N equal to 0, 1, or 2 respectively. Redirects to or
82 # from a file are represented with a list [file, mode, file-object]
83 # where file-object is initially None.
84 redirects = [(0,), (1,), (2,)]
87 redirects[2] = [r[1], 'w', None]
88 elif r[0] == ('>>',2):
89 redirects[2] = [r[1], 'a', None]
90 elif r[0] == ('>&',2) and r[1] in '012':
91 redirects[2] = redirects[int(r[1])]
92 elif r[0] == ('>&',) or r[0] == ('&>',):
93 redirects[1] = redirects[2] = [r[1], 'w', None]
95 redirects[1] = [r[1], 'w', None]
97 redirects[1] = [r[1], 'a', None]
99 redirects[0] = [r[1], 'r', None]
101 raise NotImplementedError,"Unsupported redirect: %r" % (r,)
103 # Map from the final redirections to something subprocess can handle.
105 for index,r in enumerate(redirects):
110 raise NotImplementedError,"Unsupported redirect for stdin"
112 result = subprocess.PIPE
114 result = subprocess.STDOUT
117 raise NotImplementedError,"Unsupported redirect on stdout"
118 result = subprocess.PIPE
121 if kAvoidDevNull and r[0] == '/dev/null':
122 r[2] = tempfile.TemporaryFile(mode=r[1])
124 r[2] = open(r[0], r[1])
125 # Workaround a Win32 and/or subprocess bug when appending.
127 # FIXME: Actually, this is probably an instance of PR6753.
130 opened_files.append(r[2])
132 final_redirects.append(result)
134 stdin, stdout, stderr = final_redirects
136 # If stderr wants to come from stdout, but stdout isn't a pipe, then put
137 # stderr on a pipe and treat it as stdout.
138 if (stderr == subprocess.STDOUT and stdout != subprocess.PIPE):
139 stderr = subprocess.PIPE
140 stderrIsStdout = True
142 stderrIsStdout = False
144 # Don't allow stderr on a PIPE except for the last
145 # process, this could deadlock.
147 # FIXME: This is slow, but so is deadlock.
148 if stderr == subprocess.PIPE and j != cmd.commands[-1]:
149 stderr = tempfile.TemporaryFile(mode='w+b')
150 stderrTempFiles.append((i, stderr))
152 # Resolve the executable path ourselves.
154 args[0] = Util.which(args[0], cfg.environment['PATH'])
156 raise InternalShellError(j, '%r: command not found' % j.args[0])
158 # Replace uses of /dev/null with temporary files.
160 for i,arg in enumerate(args):
161 if arg == "/dev/null":
162 f = tempfile.NamedTemporaryFile(delete=False)
164 named_temp_files.append(f.name)
167 procs.append(subprocess.Popen(args, cwd=cwd,
171 env = cfg.environment,
172 close_fds = kUseCloseFDs))
174 # Immediately close stdin for any process taking stdin from us.
175 if stdin == subprocess.PIPE:
176 procs[-1].stdin.close()
177 procs[-1].stdin = None
179 # Update the current stdin source.
180 if stdout == subprocess.PIPE:
181 input = procs[-1].stdout
183 input = procs[-1].stderr
185 input = subprocess.PIPE
187 # Explicitly close any redirected files. We need to do this now because we
188 # need to release any handles we may have on the temporary files (important
189 # on Win32, for example). Since we have already spawned the subprocess, our
190 # handles have already been transferred so we do not need them anymore.
191 for f in opened_files:
194 # FIXME: There is probably still deadlock potential here. Yawn.
195 procData = [None] * len(procs)
196 procData[-1] = procs[-1].communicate()
198 for i in range(len(procs) - 1):
199 if procs[i].stdout is not None:
200 out = procs[i].stdout.read()
203 if procs[i].stderr is not None:
204 err = procs[i].stderr.read()
207 procData[i] = (out,err)
209 # Read stderr out of the temp files.
210 for i,f in stderrTempFiles:
212 procData[i] = (procData[i][0], f.read())
215 for i,(out,err) in enumerate(procData):
216 res = procs[i].wait()
217 # Detect Ctrl-C in subprocess.
218 if res == -signal.SIGINT:
219 raise KeyboardInterrupt
221 results.append((cmd.commands[i], out, err, res))
223 # Python treats the exit code as a signed char.
225 exitCode = min(exitCode, res)
227 exitCode = max(exitCode, res)
231 # Remove any named temporary files we created.
232 for f in named_temp_files:
239 exitCode = not exitCode
243 def executeScriptInternal(test, litConfig, tmpBase, commands, cwd):
244 ln = ' &&\n'.join(commands)
246 cmd = ShUtil.ShParser(ln, litConfig.isWindows).parse()
248 return (Test.FAIL, "shell parser error on: %r" % ln)
252 exitCode = executeShCmd(cmd, test.config, cwd, results)
253 except InternalShellError,e:
259 for i,(cmd, cmd_out,cmd_err,res) in enumerate(results):
260 out += 'Command %d: %s\n' % (i, ' '.join('"%s"' % s for s in cmd.args))
261 out += 'Command %d Result: %r\n' % (i, res)
262 out += 'Command %d Output:\n%s\n\n' % (i, cmd_out)
263 out += 'Command %d Stderr:\n%s\n\n' % (i, cmd_err)
265 return out, err, exitCode
267 def executeTclScriptInternal(test, litConfig, tmpBase, commands, cwd):
271 # Given the unfortunate way LLVM's test are written, the line gets
272 # backslash substitution done twice.
273 ln = TclUtil.TclLexer(ln).lex_unquoted(process_all = True)
276 tokens = list(TclUtil.TclLexer(ln).lex())
278 return (Test.FAIL, "Tcl lexer error on: %r" % ln)
280 # Validate there are no control tokens.
282 if not isinstance(t, str):
284 "Invalid test line: %r containing %r" % (ln, t))
287 cmds.append(TclUtil.TclExecCommand(tokens).parse_pipeline())
289 return (Test.FAIL, "Tcl 'exec' parse error on: %r" % ln)
291 if litConfig.useValgrind:
292 for pipeline in cmds:
293 if pipeline.commands:
294 # Only valgrind the first command in each pipeline, to avoid
295 # valgrinding things like grep, not, and FileCheck.
296 cmd = pipeline.commands[0]
297 cmd.args = litConfig.valgrindArgs + cmd.args
301 cmd = ShUtil.Seq(cmd, '&&', c)
303 # FIXME: This is lame, we shouldn't need bash. See PR5240.
304 bashPath = litConfig.getBashPath()
305 if litConfig.useTclAsSh and bashPath:
306 script = tmpBase + '.script'
310 print >>f, 'set -o pipefail'
311 cmd.toShell(f, pipefail = True)
315 print >>sys.stdout, cmd
316 print >>sys.stdout, open(script).read()
320 command = [litConfig.getBashPath(), script]
321 out,err,exitCode = executeCommand(command, cwd=cwd,
322 env=test.config.environment)
324 return out,err,exitCode
328 exitCode = executeShCmd(cmd, test.config, cwd, results)
329 except InternalShellError,e:
330 results.append((e.command, '', e.message + '\n', 255))
335 for i,(cmd, cmd_out, cmd_err, res) in enumerate(results):
336 out += 'Command %d: %s\n' % (i, ' '.join('"%s"' % s for s in cmd.args))
337 out += 'Command %d Result: %r\n' % (i, res)
338 out += 'Command %d Output:\n%s\n\n' % (i, cmd_out)
339 out += 'Command %d Stderr:\n%s\n\n' % (i, cmd_err)
341 return out, err, exitCode
343 def executeScript(test, litConfig, tmpBase, commands, cwd):
344 bashPath = litConfig.getBashPath();
345 isWin32CMDEXE = (litConfig.isWindows and not bashPath)
346 script = tmpBase + '.script'
353 f.write('\nif %ERRORLEVEL% NEQ 0 EXIT\n'.join(commands))
355 f.write(' &&\n'.join(commands))
360 command = ['cmd','/c', script]
363 command = [bashPath, script]
365 command = ['/bin/sh', script]
366 if litConfig.useValgrind:
367 # FIXME: Running valgrind on sh is overkill. We probably could just
368 # run on clang with no real loss.
369 command = litConfig.valgrindArgs + command
371 return executeCommand(command, cwd=cwd, env=test.config.environment)
373 def isExpectedFail(test, xfails, xtargets):
374 # If the xfail matches an available feature, it always fails.
376 if item in test.config.available_features:
379 # Otherwise, check if any xfail matches this target.
381 if item == '*' or item in test.suite.config.target_triple:
386 # If so, see if it is expected to pass on this target.
388 # FIXME: Rename XTARGET to something that makes sense, like XPASS.
389 for item in xtargets:
390 if item == '*' or item in test.suite.config.target_triple:
395 def parseIntegratedTestScript(test, normalize_slashes=False,
396 extra_substitutions=[]):
397 """parseIntegratedTestScript - Scan an LLVM/Clang style integrated test
398 script and extract the lines to 'RUN' as well as 'XFAIL' and 'XTARGET'
399 information. The RUN lines also will have variable substitution performed.
402 # Get the temporary location, this is always relative to the test suite
403 # root, not test source root.
405 # FIXME: This should not be here?
406 sourcepath = test.getSourcePath()
407 sourcedir = os.path.dirname(sourcepath)
408 execpath = test.getExecPath()
409 execdir,execbase = os.path.split(execpath)
410 tmpDir = os.path.join(execdir, 'Output')
411 tmpBase = os.path.join(tmpDir, execbase)
412 if test.index is not None:
413 tmpBase += '_%d' % test.index
415 # Normalize slashes, if requested.
416 if normalize_slashes:
417 sourcepath = sourcepath.replace('\\', '/')
418 sourcedir = sourcedir.replace('\\', '/')
419 tmpDir = tmpDir.replace('\\', '/')
420 tmpBase = tmpBase.replace('\\', '/')
422 # We use #_MARKER_# to hide %% while we do the other substitutions.
423 substitutions = list(extra_substitutions)
424 substitutions.extend([('%%', '#_MARKER_#')])
425 substitutions.extend(test.config.substitutions)
426 substitutions.extend([('%s', sourcepath),
429 ('%{pathsep}', os.pathsep),
430 ('%t', tmpBase + '.tmp'),
432 # FIXME: Remove this once we kill DejaGNU.
433 ('%abs_tmp', tmpBase + '.tmp'),
434 ('#_MARKER_#', '%')])
436 # Collect the test lines from the script.
441 for ln in open(sourcepath):
443 # Isolate the command to run.
444 index = ln.index('RUN:')
447 # Trim trailing whitespace.
450 # Collapse lines with trailing '\\'.
451 if script and script[-1][-1] == '\\':
452 script[-1] = script[-1][:-1] + ln
456 items = ln[ln.index('XFAIL:') + 6:].split(',')
457 xfails.extend([s.strip() for s in items])
458 elif 'XTARGET:' in ln:
459 items = ln[ln.index('XTARGET:') + 8:].split(',')
460 xtargets.extend([s.strip() for s in items])
461 elif 'REQUIRES:' in ln:
462 items = ln[ln.index('REQUIRES:') + 9:].split(',')
463 requires.extend([s.strip() for s in items])
465 # Check for END. lines.
466 if ln[ln.index('END.'):].strip() == 'END.':
469 # Apply substitutions to the script. Allow full regular
470 # expression syntax. Replace each matching occurrence of regular
471 # expression pattern a with substitution b in line ln.
473 # Apply substitutions
474 for a,b in substitutions:
476 b = b.replace("\\","\\\\")
477 ln = re.sub(a, b, ln)
479 # Strip the trailing newline and any extra whitespace.
481 script = map(processLine, script)
483 # Verify the script contains a run line.
485 return (Test.UNRESOLVED, "Test has no run line!")
487 # Check for unterminated run lines.
488 if script[-1][-1] == '\\':
489 return (Test.UNRESOLVED, "Test has unterminated run lines (with '\\')")
491 # Check that we have the required features:
492 missing_required_features = [f for f in requires
493 if f not in test.config.available_features]
494 if missing_required_features:
495 msg = ', '.join(missing_required_features)
496 return (Test.UNSUPPORTED,
497 "Test requires the following features: %s" % msg)
499 isXFail = isExpectedFail(test, xfails, xtargets)
500 return script,isXFail,tmpBase,execdir
502 def formatTestOutput(status, out, err, exitCode, failDueToStderr, script):
503 output = StringIO.StringIO()
504 print >>output, "Script:"
506 print >>output, '\n'.join(script)
508 print >>output, "Exit Code: %r" % exitCode,
510 print >>output, "(but there was output on stderr)"
514 print >>output, "Command Output (stdout):"
519 print >>output, "Command Output (stderr):"
523 return (status, output.getvalue())
525 def executeTclTest(test, litConfig):
526 if test.config.unsupported:
527 return (Test.UNSUPPORTED, 'Test is unsupported')
529 # Parse the test script, normalizing slashes in substitutions on Windows
530 # (since otherwise Tcl style lexing will treat them as escapes).
531 res = parseIntegratedTestScript(test, normalize_slashes=kIsWindows)
535 script, isXFail, tmpBase, execdir = res
537 if litConfig.noExecute:
538 return (Test.PASS, '')
540 # Create the output directory if it does not already exist.
541 Util.mkdir_p(os.path.dirname(tmpBase))
543 res = executeTclScriptInternal(test, litConfig, tmpBase, script, execdir)
547 # Test for failure. In addition to the exit code, Tcl commands are
548 # considered to fail if there is any standard error output.
549 out,err,exitCode = res
551 ok = exitCode != 0 or err and not litConfig.ignoreStdErr
557 ok = exitCode == 0 and (not err or litConfig.ignoreStdErr)
566 # Set a flag for formatTestOutput so it can explain why the test was
567 # considered to have failed, despite having an exit code of 0.
568 failDueToStderr = exitCode == 0 and err and not litConfig.ignoreStdErr
570 return formatTestOutput(status, out, err, exitCode, failDueToStderr, script)
572 def executeShTest(test, litConfig, useExternalSh,
573 extra_substitutions=[]):
574 if test.config.unsupported:
575 return (Test.UNSUPPORTED, 'Test is unsupported')
577 res = parseIntegratedTestScript(test, useExternalSh, extra_substitutions)
581 script, isXFail, tmpBase, execdir = res
583 if litConfig.noExecute:
584 return (Test.PASS, '')
586 # Create the output directory if it does not already exist.
587 Util.mkdir_p(os.path.dirname(tmpBase))
590 res = executeScript(test, litConfig, tmpBase, script, execdir)
592 res = executeScriptInternal(test, litConfig, tmpBase, script, execdir)
596 out,err,exitCode = res
613 # Sh tests are not considered to fail just from stderr output.
614 failDueToStderr = False
616 return formatTestOutput(status, out, err, exitCode, failDueToStderr, script)