From 79a91ecfafea899e25dc0df0df6ffb55a8f3cc58 Mon Sep 17 00:00:00 2001
From: Romain Hedouin <romain.hedouin@mantra.ms>
Date: Thu, 8 Oct 2026 01:18:49 +0200
Subject: [PATCH] graphics: cache the macOS thread id in TrackingSpinLock
 (#1169)

Every lock and unlock called pthread_mach_thread_np. Cache it per thread like the Linux branch does.
---
 src/graphics/host_gpu/regionManager.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/graphics/host_gpu/regionManager.h b/src/graphics/host_gpu/regionManager.h
index 9fae4ef7a..bcb05bb62 100644
--- a/src/graphics/host_gpu/regionManager.h
+++ b/src/graphics/host_gpu/regionManager.h
@@ -60,7 +60,9 @@ private:
 		return GetCurrentThreadId();
 #elif defined(__APPLE__)
 		// mach thread port is a nonzero per-thread id (0 is the "no owner" sentinel).
-		return static_cast<uint32_t>(pthread_mach_thread_np(pthread_self()));
+		static thread_local const uint32_t tid =
+		    static_cast<uint32_t>(pthread_mach_thread_np(pthread_self()));
+		return tid;
 #elif defined(__linux__)
 		static thread_local const uint32_t tid = static_cast<uint32_t>(::syscall(SYS_gettid));
 		return tid;