From 5928218b62903528993e0f0080de63eb5a086a96 Mon Sep 17 00:00:00 2001
From: Jean Pierre Cimalando <jp-dev@inbox.ru>
Date: Thu, 6 Aug 2020 16:44:39 +0200
Subject: [PATCH] Use the spinlock mutex in FilePool

---
 src/sfizz/FilePool.cpp | 4 ++--
 src/sfizz/FilePool.h   | 3 ++-
 2 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/src/sfizz/FilePool.cpp b/src/sfizz/FilePool.cpp
index 9bec98ef..8c474e9f 100644
--- a/src/sfizz/FilePool.cpp
+++ b/src/sfizz/FilePool.cpp
@@ -361,7 +361,7 @@ void sfz::FilePool::setPreloadSize(uint32_t preloadSize) noexcept
 
 void sfz::FilePool::tryToClearPromises()
 {
-    const std::lock_guard<std::mutex> promiseLock { promiseGuard };
+    const std::lock_guard<SpinMutex> promiseLock { promiseGuard };
 
     for (auto& promise: promisesToClear) {
         if (promise->dataStatus != FilePromise::DataStatus::Wait)
@@ -442,7 +442,7 @@ void sfz::FilePool::clear()
 
 void sfz::FilePool::cleanupPromises() noexcept
 {
-    const std::unique_lock<std::mutex> lock { promiseGuard, std::try_to_lock };
+    const std::unique_lock<SpinMutex> lock { promiseGuard, std::try_to_lock };
     if (!lock.owns_lock())
         return;
 
diff --git a/src/sfizz/FilePool.h b/src/sfizz/FilePool.h
index 2547591f..cbec5f8f 100644
--- a/src/sfizz/FilePool.h
+++ b/src/sfizz/FilePool.h
@@ -32,6 +32,7 @@
 #include "AudioSpan.h"
 #include "FileId.h"
 #include "SIMDHelpers.h"
+#include "utility/SpinMutex.h"
 #include "ghc/fs_std.hpp"
 #include <absl/container/flat_hash_map.h>
 #include <absl/types/optional.h>
@@ -288,7 +289,7 @@ private:
     std::vector<FilePromisePtr> emptyPromises;
     std::vector<FilePromisePtr> temporaryFilePromises;
     std::vector<FilePromisePtr> promisesToClear;
-    std::mutex promiseGuard;
+    SpinMutex promiseGuard;
 
     // Preloaded data
     absl::flat_hash_map<FileId, FileDataHandle> preloadedFiles;