From 6307683a02610f13b8402be35f29c72afb2917af Mon Sep 17 00:00:00 2001
From: shuke <37901441+shuke987@users.noreply.github.com>
Date: Mon, 26 Oct 2026 12:05:23 +0800
Subject: [PATCH] [chore](build) Raise threadpool header reach baseline to 1200

### What problem does this PR solve?

Issue Number: None

Related PR: #69581

Problem Summary: The threadpool header reaches 1089 translation units on
master c3c7af57fa4, exceeding the historical 988 baseline plus 10% (1087).
Raise this baseline to 1200 to unblock builds with explicit growth headroom.
The existing 10% allowance makes the new limit 1320. This deliberately
relaxes one dependency budget without changing other checks or runtime code.
Add an include-injection self-test proving threadpool reach is still bounded.

### Release note

None

### Check List (For Author)

- Test: build-support/check-build-hygiene.sh and build-support/tests/run.sh passed.
- Behavior changed: Yes, the threadpool header reach limit increases to 1320 TUs.
- Does this need documentation: No.
---
 build-support/check-header-deps.py                    |  2 +-
 build-support/tests/test-build-hygiene-header-deps.sh | 10 ++++++++++
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/build-support/check-header-deps.py b/build-support/check-header-deps.py
index 8b2eb403755636..214b8d079c211d 100755
--- a/build-support/check-header-deps.py
+++ b/build-support/check-header-deps.py
@@ -587,7 +587,7 @@
     "gen_cpp/Types_types.h": 1993,
     "gen_cpp/segment_v2.pb.h": 1234,
     "gen_cpp/PaloInternalService_types.h": 1133,
-    "util/threadpool.h": 988,
+    "util/threadpool.h": 1200,
     # parsed_page.h holds RleDecoder<bool> by value and constructs it in the
     # header, so the whole storage read stack sees the RLE machinery; a live
     # dependency, budgeted as-is (trimming it is a refactor, not a gate).
diff --git a/build-support/tests/test-build-hygiene-header-deps.sh b/build-support/tests/test-build-hygiene-header-deps.sh
index 6c0d1969b6d057..2c773adcae2ba7 100755
--- a/build-support/tests/test-build-hygiene-header-deps.sh
+++ b/build-support/tests/test-build-hygiene-header-deps.sh
@@ -127,6 +127,16 @@ echo "${OUT}" | grep -q -- "--reach runtime/workload_group/workload_group.h" \
     || fail "reverse budget failure lacks the --reach fix pointer"
 cp "${BACKUP}/be/src/util/pretty_printer.h" "${ROOT}/be/src/util/pretty_printer.h"
 
+# ---- RED: threadpool reach remains bounded after its baseline increase ----
+printf '#include "util/threadpool.h"\n' >> "${ROOT}/be/src/common/logging.h"
+OUT="$(run_gate)"; EC=$?
+[ "${EC}" -eq 1 ] || fail "threadpool reach injection expected exit 1, got ${EC}"
+echo "${OUT}" | grep -q "util/threadpool.h now reaches" \
+    || fail "threadpool reverse budget breach not reported"
+echo "${OUT}" | grep -q -- "--reach util/threadpool.h" \
+    || fail "threadpool reach failure lacks the --reach fix pointer"
+cp "${BACKUP}/be/src/common/logging.h" "${ROOT}/be/src/common/logging.h"
+
 # ---- RED: pch whitelist (quoted include added to pch.h) ----
 printf '#include "common/logging.h"\n' >> "${ROOT}/be/src/pch/pch.h"
 OUT="$(run_gate)"; EC=$?