diff options
| -rw-r--r-- | llvm/utils/lit/lit/run.py | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/llvm/utils/lit/lit/run.py b/llvm/utils/lit/lit/run.py index 27c414d6dd6..4817dd6d1d7 100644 --- a/llvm/utils/lit/lit/run.py +++ b/llvm/utils/lit/lit/run.py @@ -228,6 +228,28 @@ class Run(object): canceled_flag = LockedValue(0) consumer = ThreadResultsConsumer(display) + # Because some tests use threads internally, and at least on Linux each + # of these threads counts toward the current process limit, try to + # raise the (soft) process limit so that tests don't fail due to + # resource exhaustion. + try: + cpus = lit.util.detectCPUs() + desired_limit = jobs * cpus * 2 # the 2 is a safety factor + + # Import the resource module here inside this try block because it + # will likely fail on Windows. + import resource + + max_procs_soft, max_procs_hard = resource.getrlimit(resource.RLIMIT_NPROC) + desired_limit = min(desired_limit, max_procs_hard) + + if max_procs_soft < desired_limit: + resource.setrlimit(resource.RLIMIT_NPROC, (desired_limit, max_procs_hard)) + self.lit_config.note('raised the process limit from %d to %d' % \ + (max_procs_soft, desired_limit)) + except: + pass + # Create the test provider. provider = TestProvider(self.tests, jobs, queue_impl, canceled_flag) |
