[Lldb-commits] [lldb] [lldb][Windows] Document thread timeout variable (PR #213655)

[Charles Zablit via lldb-commits]

https://github.com/charles-zablit created https://github.com/llvm/llvm-project/pull/213655

This is a follow up to https://github.com/llvm/llvm-project/pull/213010.

>From 58285c68f76bf33dc13b54737993ed86bf2b00f1 Mon Sep 17 00:00:00 2001
From: Charles Zablit <c_zablit at apple.com>
Date: Mon, 3 Aug 2026 14:30:05 +0200
Subject: [PATCH] [lldb][Windows] Document thread timeout variable

---
 lldb/source/Plugins/Platform/Windows/PlatformWindows.cpp | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/lldb/source/Plugins/Platform/Windows/PlatformWindows.cpp b/lldb/source/Plugins/Platform/Windows/PlatformWindows.cpp
index 497a78e85ed58..224d13babfd12 100644
--- a/lldb/source/Plugins/Platform/Windows/PlatformWindows.cpp
+++ b/lldb/source/Plugins/Platform/Windows/PlatformWindows.cpp
@@ -48,6 +48,10 @@ LLDB_PLUGIN_DEFINE(PlatformWindows)
 
 static uint32_t g_initialize_count = 0;
 
+// Upper bound on the timeout used when running a utility expression with
+// only one thread allowed to run.
+static constexpr std::chrono::seconds g_max_one_thread_timeout(5);
+
 namespace {
 
 #define LLDB_PROPERTIES_windows
@@ -426,7 +430,7 @@ uint32_t PlatformWindows::DoLoadImage(Process *process,
   options.SetTrapExceptions(false);
   options.SetTimeout(process->GetUtilityExpressionTimeout());
   options.SetOneThreadTimeout(std::min<std::chrono::microseconds>(
-      std::chrono::seconds(5), process->GetUtilityExpressionTimeout() / 2));
+      g_max_one_thread_timeout, process->GetUtilityExpressionTimeout() / 2));
   options.SetIsForUtilityExpr(true);
 
   ExpressionResults result =
@@ -941,7 +945,7 @@ extern "C" {
   options.SetTrapExceptions(false);
   options.SetTimeout(process->GetUtilityExpressionTimeout());
   options.SetOneThreadTimeout(std::min<std::chrono::microseconds>(
-      std::chrono::seconds(5), process->GetUtilityExpressionTimeout() / 2));
+      g_max_one_thread_timeout, process->GetUtilityExpressionTimeout() / 2));
 
   ExpressionResults result = UserExpression::Evaluate(
       context, options, expression, kLoaderDecls, value);