From a6371fb69dc87a65b766a2a274e6cf25459b8975 Mon Sep 17 00:00:00 2001
From: Liam <byteslice@airmail.cc>
Date: Thu, 16 Jun 2022 23:42:39 -0400
Subject: core: fix initialization in single core, sync GPU mode

---
 src/core/cpu_manager.cpp | 3 +++
 src/core/cpu_manager.h   | 5 +++++
 2 files changed, 8 insertions(+)

(limited to 'src/core')

diff --git a/src/core/cpu_manager.cpp b/src/core/cpu_manager.cpp
index 1c07dc90e..d69b2602a 100644
--- a/src/core/cpu_manager.cpp
+++ b/src/core/cpu_manager.cpp
@@ -26,6 +26,7 @@ void CpuManager::ThreadStart(std::stop_token stop_token, CpuManager& cpu_manager
 
 void CpuManager::Initialize() {
     num_cores = is_multicore ? Core::Hardware::NUM_CPU_CORES : 1;
+    gpu_barrier = std::make_unique<Common::Barrier>(num_cores + 1);
 
     for (std::size_t core = 0; core < num_cores; core++) {
         core_data[core].host_thread = std::jthread(ThreadStart, std::ref(*this), core);
@@ -230,6 +231,8 @@ void CpuManager::RunThread(std::size_t core) {
     });
 
     // Running
+    gpu_barrier->Sync();
+
     if (!is_async_gpu && !is_multicore) {
         system.GPU().ObtainContext();
     }
diff --git a/src/core/cpu_manager.h b/src/core/cpu_manager.h
index 681bdaf19..f0751fc58 100644
--- a/src/core/cpu_manager.h
+++ b/src/core/cpu_manager.h
@@ -43,6 +43,10 @@ public:
         is_async_gpu = is_async;
     }
 
+    void OnGpuReady() {
+        gpu_barrier->Sync();
+    }
+
     void Initialize();
     void Shutdown();
 
@@ -81,6 +85,7 @@ private:
         std::jthread host_thread;
     };
 
+    std::unique_ptr<Common::Barrier> gpu_barrier{};
     std::array<CoreData, Core::Hardware::NUM_CPU_CORES> core_data{};
 
     bool is_async_gpu{};
-- 
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