Revert "Enable parallel test execution in console runner"

This reverts commit 7ae29d49.

CONSOLE-RUNNER.md

@@ -40,7 +40,6 @@ Name | Action
 -----|-------
 -h, --help | displays a brief help message
 --command=COMMAND | **required** command which invokes javascript engine to be tested
--j, --workers-count | Number of tests to run in parallel (defaults to number of cores - 1)
 --tests=TESTS | path to the test suite; default is current directory
 --cat | don't execute tests, just print code that would be run
 --summary | generate a summary at end of execution
@@ -50,9 +49,9 @@ Name | Action
 --unmarked_default=MODE | mode to use for tests that are not marked **onlyStrict** or **noStrict** ; MODE can be `strict` or `non_strict` or `both`
 --logname=LOGNAME | write output to file (in addition to stdout)
 --junitname=JUNITNAME | write test results to file in JUnit XML format
---loglevel=LOGLEVEL | set log level, primarily useful for debugging `test262.py`
+--loglevel=LOGLEVEL | set log level, primarily useful for debugging `test262.py` 
 --print-handle=FUNC | enable async test logging via javascript function e.g., `console.log`
-
+ 
 ### Usage Notes
 
 Non-option arguments are used as filters to match test names.  If no filters are found, the whole test suite is run.
@@ -67,7 +66,7 @@ The COMMAND argument can be a quoted string.  This is useful when testing ECMASc
 
 ```
 $ test262.py --command="node --harmony" es6
-```
+``` 
 
 #### Async Tests
 
@@ -82,7 +81,7 @@ JavaScriptCore<sup>2</sup> | jsc | print
 
 ***Notes:***
 1. As of 2014-Jul-23, SpiderMonkey does not support Promise in the `js` executable ([see bug 911216](https://bugzilla.mozilla.org/show_bug.cgi?id=911216) )
-2. As of 2014-Jul-23, JavaScriptCore does not support Promise in the `jsc` executable
+2. As of 2014-Jul-23, JavaScriptCore does not support Promise in the `jsc` executable 
 
 
 ### Troubleshooting

tools/packaging/test262.py

@@ -18,7 +18,6 @@ import subprocess
 import sys
 import tempfile
 import time
-import threading
 import xml.dom.minidom
 import datetime
 import shutil
@@ -55,8 +54,6 @@ EXCLUDE_LIST = [x.getAttribute("id") for x in EXCLUDE_LIST]
 def BuildOptions():
   result = optparse.OptionParser()
   result.add_option("--command", default=None, help="The command-line to run")
-  result.add_option("-j", "--workers-count", type=int, default=max(1, GetCPUCount() - 1),
-                    help="Number of tests to run in parallel (default %default)")
   result.add_option("--tests", default=path.abspath('.'),
                     help="Path to the tests")
   result.add_option("--cat", default=False, action="store_true",
@@ -95,35 +92,6 @@ def IsWindows():
   p = platform.system()
   return (p == 'Windows') or (p == 'Microsoft')
 
-def GetCPUCount():
-    """
-    Guess at a reasonable parallelism count to set as the default for the
-    current machine and run.
-    """
-    # Python 2.6+
-    try:
-        import multiprocessing
-        return multiprocessing.cpu_count()
-    except (ImportError, NotImplementedError):
-        pass
-
-    # POSIX
-    try:
-        res = int(os.sysconf('SC_NPROCESSORS_ONLN'))
-        if res > 0:
-            return res
-    except (AttributeError, ValueError):
-        pass
-
-    # Windows
-    try:
-        res = int(os.environ['NUMBER_OF_PROCESSORS'])
-        if res > 0:
-            return res
-    except (KeyError, ValueError):
-        pass
-
-    return 1
 
 class TempFile(object):
 
@@ -558,7 +526,7 @@ class TestSuite(object):
       print
       result.ReportOutcome(False)
 
-  def Run(self, command_template, tests, print_summary, full_summary, logname, junitfile, workers_count):
+  def Run(self, command_template, tests, print_summary, full_summary, logname, junitfile):
     if not "{{path}}" in command_template:
       command_template += " {{path}}"
     cases = self.EnumerateTests(tests)
@@ -583,41 +551,16 @@ class TestSuite(object):
           SkipCaseElement.append(SkipElement)
           TestSuiteElement.append(SkipCaseElement)
 
-    if workers_count > 1:
-      pool_sem = threading.Semaphore(workers_count)
-      log_lock = threading.Lock()
-    else:
-      log_lock = None
-
     for case in cases:
-      def exec_case():
-        result = case.Run(command_template)
-
-        try:
-          if workers_count > 1:
-            log_lock.acquire()
-
-          if junitfile:
-            TestCaseElement = result.XmlAssemble(result)
-            TestSuiteElement.append(TestCaseElement)
-            if case == cases[len(cases)-1]:
-                 xmlj.ElementTree(TestSuitesElement).write(junitfile, "UTF-8")
-          if logname:
-            self.WriteLog(result)
-        finally:
-          if workers_count > 1:
-            log_lock.release()
-
-        progress.HasRun(result)
-      if workers_count == 1:
-        exec_case()
-      else:
-        pool_sem.acquire()
-        threading.Thread(target=exec_case).start()
-        pool_sem.release()
-
-    if workers_count > 1:
-      log_lock.acquire()
+      result = case.Run(command_template)
+      if junitfile:
+        TestCaseElement = result.XmlAssemble(result)
+        TestSuiteElement.append(TestCaseElement)
+        if case == cases[len(cases)-1]:
+             xmlj.ElementTree(TestSuitesElement).write(junitfile, "UTF-8")
+      if logname:
+        self.WriteLog(result)
+      progress.HasRun(result)
 
     if print_summary:
       self.PrintSummary(progress, logname)
@@ -627,10 +570,6 @@ class TestSuite(object):
         print
         print "Use --full-summary to see output from failed tests"
     print
-
-    if workers_count > 1:
-      log_lock.release()
-
     return progress.failed
 
   def WriteLog(self, result):
@@ -695,8 +634,7 @@ def Main():
                           options.summary or options.full_summary,
                           options.full_summary,
                           options.logname,
-                          options.junitname,
-                          options.workers_count)
+                          options.junitname)
   return code
 
 if __name__ == '__main__':