[libcxx] [llvm] Add more debug output to the builders for a moment. (PR #83508)

[via llvm-commits]

https://github.com/EricWF updated https://github.com/llvm/llvm-project/pull/83508

>From 1973366cde252887047ec93f3e896f8e64a399cf Mon Sep 17 00:00:00 2001
From: eric <eric at efcs.ca>
Date: Thu, 29 Feb 2024 19:18:47 -0500
Subject: [PATCH 1/4] Add more debug output to the builders for a moment.

---
 libcxx/utils/ci/run-buildbot | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libcxx/utils/ci/run-buildbot b/libcxx/utils/ci/run-buildbot
index 2905745355b68e..e0760c5e285aa7 100755
--- a/libcxx/utils/ci/run-buildbot
+++ b/libcxx/utils/ci/run-buildbot
@@ -127,7 +127,7 @@ function generate-cmake-base() {
           -DLIBCXXABI_ENABLE_WERROR=YES \
           -DLIBUNWIND_ENABLE_WERROR=YES \
           -DLIBCXX_ENABLE_CLANG_TIDY=${ENABLE_CLANG_TIDY} \
-          -DLLVM_LIT_ARGS="-sv --xunit-xml-output test-results.xml --timeout=1500 --time-tests" \
+          -DLLVM_LIT_ARGS="-v --xunit-xml-output test-results.xml --timeout=1500 --time-tests" \
           "${@}"
 }
 

>From fb34a045f140c2dafd3b32a4c649de96fb9f8795 Mon Sep 17 00:00:00 2001
From: eric <eric at efcs.ca>
Date: Thu, 29 Feb 2024 21:58:16 -0500
Subject: [PATCH 2/4] make changes

---
 libcxx/utils/run.py | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/libcxx/utils/run.py b/libcxx/utils/run.py
index 6b4d615444bcfa..ac98db9f7c29aa 100755
--- a/libcxx/utils/run.py
+++ b/libcxx/utils/run.py
@@ -17,7 +17,7 @@
 import os
 import platform
 import subprocess
-
+import signal
 
 def main():
     parser = argparse.ArgumentParser()
@@ -65,8 +65,10 @@ def main():
             env["TEMP"] = os.environ.get("TEMP")
 
     # Run the command line with the given environment in the execution directory.
-    return subprocess.call(commandLine, cwd=args.execdir, env=env, shell=False)
-
+    result = subprocess.call(commandLine, cwd=args.execdir, env=env, shell=False)
+    if result == -signal.SIGINT:
+        raise KeyboardInterrupt
+    return result
 
 if __name__ == "__main__":
     exit(main())

>From 807e5a6434025024e40eb7c808e98050272608af Mon Sep 17 00:00:00 2001
From: eric <eric at efcs.ca>
Date: Fri, 1 Mar 2024 22:09:28 -0500
Subject: [PATCH 3/4] attempt to find bug

---
 llvm/utils/lit/lit/run.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/llvm/utils/lit/lit/run.py b/llvm/utils/lit/lit/run.py
index 535c859352cc4d..32c3f18705d05e 100644
--- a/llvm/utils/lit/lit/run.py
+++ b/llvm/utils/lit/lit/run.py
@@ -129,7 +129,7 @@ def _increase_process_limit(self):
 
             soft_limit, hard_limit = resource.getrlimit(NPROC)
             desired_limit = min(desired_limit, hard_limit)
-
+            assert desired_limit > 0
             if soft_limit < desired_limit:
                 resource.setrlimit(NPROC, (desired_limit, hard_limit))
                 self.lit_config.note(

>From 18ae68ad15d2c548ad1d2276b21fb314e6e84889 Mon Sep 17 00:00:00 2001
From: eric <eric at efcs.ca>
Date: Sat, 2 Mar 2024 11:17:49 -0500
Subject: [PATCH 4/4] Add more debugging of NPROC limits

---
 llvm/utils/lit/lit/run.py | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/llvm/utils/lit/lit/run.py b/llvm/utils/lit/lit/run.py
index 32c3f18705d05e..fad2fd4e268b6d 100644
--- a/llvm/utils/lit/lit/run.py
+++ b/llvm/utils/lit/lit/run.py
@@ -129,13 +129,18 @@ def _increase_process_limit(self):
 
             soft_limit, hard_limit = resource.getrlimit(NPROC)
             desired_limit = min(desired_limit, hard_limit)
+            self.lit_config.warning(
+                "Raise process limit from %d to %d" % (soft_limit, desired_limit)
+            )
             assert desired_limit > 0
             if soft_limit < desired_limit:
                 resource.setrlimit(NPROC, (desired_limit, hard_limit))
                 self.lit_config.note(
                     "Raised process limit from %d to %d" % (soft_limit, desired_limit)
                 )
+        except AssertionError as assErr:
+            self.lit_config.warning('Tried to ')
         except Exception as ex:
             # Warn, unless this is Windows, in which case this is expected.
             if os.name != "nt":
-                self.lit_config.warning("Failed to raise process limit: %s" % ex)
+                self.lit_config.warning("Failed to raise process limit: %s" % type(ex))