tor-browser

commit 2e834c389bb28e1bd3de9b818c75ad059de54bf5
parent 90cc8fffc1ed1516b664cffe09943b8e646f6a71
Author: Brad Werth <werth@efn.org>
Date:   Thu, 13 Nov 2025 00:43:15 +0000

Bug 1985327 Part 1: Elevate the priority of gpu process at process launch. r=gfx-reviewers,lsalzman

This one-time sets the priority of the gpu process, which should have a
lasting effect, because it's not set anywhere else.

Differential Revision: https://phabricator.services.mozilla.com/D272101

Diffstat:
M
gfx/ipc/GPUProcessManager.cpp
 | 
4
++++

1 file changed, 4 insertions(+), 0 deletions(-)
diff --git a/gfx/ipc/GPUProcessManager.cpp b/gfx/ipc/GPUProcessManager.cpp
@@ -615,6 +615,10 @@ void GPUProcessManager::OnProcessLaunchComplete(GPUProcessHost* aHost) {
   }
 #endif
 
+  // Set a high priority for the newly-created gpu process.
+  int pID = mProcess->GetChildProcessId();
+  hal::SetProcessPriority(pID, hal::PROCESS_PRIORITY_FOREGROUND_HIGH);
+
   ipc::Endpoint<PVsyncBridgeParent> vsyncParent;
   ipc::Endpoint<PVsyncBridgeChild> vsyncChild;
   nsresult rv = PVsyncBridge::CreateEndpoints(