From: Joel Rosdahl <joel@rosdahl.net>
Date: Mon, 27 Oct 2025 20:14:40 +0000 (+0100)
Subject: perf: Add fast path in ThreadPool::enqueue
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7213a771410d289187d07f998054b8c900b4aba6;p=thirdparty%2Fccache.git

perf: Add fast path in ThreadPool::enqueue
---

diff --git a/src/ccache/util/threadpool.cpp b/src/ccache/util/threadpool.cpp
index 96aabbbe..ab3ddd20 100644
--- a/src/ccache/util/threadpool.cpp
+++ b/src/ccache/util/threadpool.cpp
@@ -44,9 +44,11 @@ ThreadPool::enqueue(std::function<void()> function)
 {
   {
     std::unique_lock<std::mutex> lock(m_mutex);
-    m_task_popped_condition.wait(lock, [this] {
-      return m_shutting_down || m_task_queue.size() < m_task_queue_max_size;
-    });
+    if (!m_shutting_down && m_task_queue.size() >= m_task_queue_max_size) {
+      m_task_popped_condition.wait(lock, [this] {
+        return m_shutting_down || m_task_queue.size() < m_task_queue_max_size;
+      });
+    }
     if (m_shutting_down) {
       return;
     }