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 sentinel 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):
247 cmds.append(ShUtil.ShParser(ln, litConfig.isWindows).parse())
249 return (Test.FAIL, "shell parser error on: %r" % ln)
253 cmd = ShUtil.Seq(cmd, '&&', c)
257 exitCode = executeShCmd(cmd, test.config, cwd, results)
258 except InternalShellError,e:
264 for i,(cmd, cmd_out,cmd_err,res) in enumerate(results):
265 out += 'Command %d: %s\n' % (i, ' '.join('"%s"' % s for s in cmd.args))
266 out += 'Command %d Result: %r\n' % (i, res)
267 out += 'Command %d Output:\n%s\n\n' % (i, cmd_out)
268 out += 'Command %d Stderr:\n%s\n\n' % (i, cmd_err)
270 return out, err, exitCode
272 def executeScript(test, litConfig, tmpBase, commands, cwd):
273 bashPath = litConfig.getBashPath();
274 isWin32CMDEXE = (litConfig.isWindows and not bashPath)
275 script = tmpBase + '.script'
282 f.write('\nif %ERRORLEVEL% NEQ 0 EXIT\n'.join(commands))
284 f.write('{ ' + '; } &&\n{ '.join(commands) + '; }')
289 command = ['cmd','/c', script]
292 command = [bashPath, script]
294 command = ['/bin/sh', script]
295 if litConfig.useValgrind:
296 # FIXME: Running valgrind on sh is overkill. We probably could just
297 # run on clang with no real loss.
298 command = litConfig.valgrindArgs + command
300 return executeCommand(command, cwd=cwd, env=test.config.environment)
302 def isExpectedFail(test, xfails):
303 # Check if any of the xfails match an available feature or the target.
305 # If this is the wildcard, it always fails.
309 # If this is an exact match for one of the features, it fails.
310 if item in test.config.available_features:
313 # If this is a part of the target triple, it fails.
314 if item in test.suite.config.target_triple:
319 def parseIntegratedTestScript(test, normalize_slashes=False,
320 extra_substitutions=[]):
321 """parseIntegratedTestScript - Scan an LLVM/Clang style integrated test
322 script and extract the lines to 'RUN' as well as 'XFAIL' and 'REQUIRES'
323 information. The RUN lines also will have variable substitution performed.
326 # Get the temporary location, this is always relative to the test suite
327 # root, not test source root.
329 # FIXME: This should not be here?
330 sourcepath = test.getSourcePath()
331 sourcedir = os.path.dirname(sourcepath)
332 execpath = test.getExecPath()
333 execdir,execbase = os.path.split(execpath)
334 tmpDir = os.path.join(execdir, 'Output')
335 tmpBase = os.path.join(tmpDir, execbase)
336 if test.index is not None:
337 tmpBase += '_%d' % test.index
339 # Normalize slashes, if requested.
340 if normalize_slashes:
341 sourcepath = sourcepath.replace('\\', '/')
342 sourcedir = sourcedir.replace('\\', '/')
343 tmpDir = tmpDir.replace('\\', '/')
344 tmpBase = tmpBase.replace('\\', '/')
346 # We use #_MARKER_# to hide %% while we do the other substitutions.
347 substitutions = list(extra_substitutions)
348 substitutions.extend([('%%', '#_MARKER_#')])
349 substitutions.extend(test.config.substitutions)
350 substitutions.extend([('%s', sourcepath),
353 ('%{pathsep}', os.pathsep),
354 ('%t', tmpBase + '.tmp'),
356 ('#_MARKER_#', '%')])
358 # Collect the test lines from the script.
363 for ln in open(sourcepath):
366 # Isolate the command to run.
367 index = ln.index('RUN:')
370 # Trim trailing whitespace.
373 # Substitute line number expressions
374 ln = re.sub('%\(line\)', str(line_number), ln)
375 def replace_line_number(match):
376 if match.group(1) == '+':
377 return str(line_number + int(match.group(2)))
378 if match.group(1) == '-':
379 return str(line_number - int(match.group(2)))
380 ln = re.sub('%\(line *([\+-]) *(\d+)\)', replace_line_number, ln)
382 # Collapse lines with trailing '\\'.
383 if script and script[-1][-1] == '\\':
384 script[-1] = script[-1][:-1] + ln
388 items = ln[ln.index('XFAIL:') + 6:].split(',')
389 xfails.extend([s.strip() for s in items])
390 elif 'REQUIRES:' in ln:
391 items = ln[ln.index('REQUIRES:') + 9:].split(',')
392 requires.extend([s.strip() for s in items])
394 # Check for END. lines.
395 if ln[ln.index('END.'):].strip() == 'END.':
398 # Apply substitutions to the script. Allow full regular
399 # expression syntax. Replace each matching occurrence of regular
400 # expression pattern a with substitution b in line ln.
402 # Apply substitutions
403 for a,b in substitutions:
405 b = b.replace("\\","\\\\")
406 ln = re.sub(a, b, ln)
408 # Strip the trailing newline and any extra whitespace.
410 script = map(processLine, script)
412 # Verify the script contains a run line.
414 return (Test.UNRESOLVED, "Test has no run line!")
416 # Check for unterminated run lines.
417 if script[-1][-1] == '\\':
418 return (Test.UNRESOLVED, "Test has unterminated run lines (with '\\')")
420 # Check that we have the required features:
421 missing_required_features = [f for f in requires
422 if f not in test.config.available_features]
423 if missing_required_features:
424 msg = ', '.join(missing_required_features)
425 return (Test.UNSUPPORTED,
426 "Test requires the following features: %s" % msg)
428 isXFail = isExpectedFail(test, xfails)
429 return script,isXFail,tmpBase,execdir
431 def formatTestOutput(status, out, err, exitCode, script):
432 output = StringIO.StringIO()
433 print >>output, "Script:"
435 print >>output, '\n'.join(script)
437 print >>output, "Exit Code: %r" % exitCode,
440 print >>output, "Command Output (stdout):"
445 print >>output, "Command Output (stderr):"
449 return (status, output.getvalue())
451 def executeShTest(test, litConfig, useExternalSh,
452 extra_substitutions=[]):
453 if test.config.unsupported:
454 return (Test.UNSUPPORTED, 'Test is unsupported')
456 res = parseIntegratedTestScript(test, useExternalSh, extra_substitutions)
460 script, isXFail, tmpBase, execdir = res
462 if litConfig.noExecute:
463 return (Test.PASS, '')
465 # Create the output directory if it does not already exist.
466 Util.mkdir_p(os.path.dirname(tmpBase))
469 res = executeScript(test, litConfig, tmpBase, script, execdir)
471 res = executeScriptInternal(test, litConfig, tmpBase, script, execdir)
475 out,err,exitCode = res
492 return formatTestOutput(status, out, err, exitCode, script)