[llvm] r193279 - [lit] Use multiprocessing based parallelism by default, on Unix.

[Daniel Dunbar]

Author: ddunbar
Date: Wed Oct 23 17:19:07 2013
New Revision: 193279

URL: http://llvm.org/viewvc/llvm-project?rev=193279&view=rev
Log:
[lit] Use multiprocessing based parallelism by default, on Unix.

Modified:
    llvm/trunk/utils/lit/lit/main.py

Modified: llvm/trunk/utils/lit/lit/main.py
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/utils/lit/lit/main.py?rev=193279&r1=193278&r2=193279&view=diff
==============================================================================
--- llvm/trunk/utils/lit/lit/main.py (original)
+++ llvm/trunk/utils/lit/lit/main.py Wed Oct 23 17:19:07 2013
@@ -115,6 +115,10 @@ def main(builtinParameters = {}):
     # FIXME: This is a hack.
     sys.setcheckinterval(1000)
 
+    # Use processes by default on Unix platforms.
+    isWindows = platform.system() == 'Windows'
+    useProcessesIsDefault = not isWindows
+
     global options
     from optparse import OptionParser, OptionGroup
     parser = OptionParser("usage: %prog [options] {file-or-path}")
@@ -199,10 +203,10 @@ def main(builtinParameters = {}):
                       action="store_true", default=False)
     group.add_option("", "--use-processes", dest="useProcesses",
                       help="Run tests in parallel with processes (not threads)",
-                      action="store_true", default=False)
+                      action="store_true", default=useProcessesIsDefault)
     group.add_option("", "--use-threads", dest="useProcesses",
                       help="Run tests in parallel with threads (not processes)",
-                      action="store_false", default=False)
+                      action="store_false", default=not useProcessesIsDefault)
     parser.add_option_group(group)
 
     (opts, args) = parser.parse_args()
@@ -241,7 +245,7 @@ def main(builtinParameters = {}):
         valgrindArgs = opts.valgrindArgs,
         noExecute = opts.noExecute,
         debug = opts.debug,
-        isWindows = (platform.system()=='Windows'),
+        isWindows = isWindows,
         params = userParams,
         config_prefix = opts.configPrefix)