From 67a527010db826603239617fea7f85fa2d8fb541 Mon Sep 17 00:00:00 2001
From: Maschell <Maschell@gmx.de>
Date: Tue, 20 Jan 2026 18:26:50 +0100
Subject: [PATCH] Use std::recursive vs std::mutex

---
 source/export.cpp           |  9 ++++++---
 source/function_patcher.cpp |  4 ++++
 source/main.cpp             | 10 ++++++----
 source/utils/globals.cpp    |  2 +-
 source/utils/globals.h      |  3 ++-
 5 files changed, 19 insertions(+), 9 deletions(-)

diff --git a/source/export.cpp b/source/export.cpp
index a550363..b6d15b6 100644
--- a/source/export.cpp
+++ b/source/export.cpp
@@ -2,8 +2,11 @@
 #include "PatchedFunctionData.h"
 #include "function_patcher.h"
 #include "utils/globals.h"
+
+#include <mutex>
 #include <ranges>
 #include <vector>
+
 #include <wums/exports.h>
 
 WUT_CHECK_OFFSET(function_replacement_data_v2_t, 0x00, VERSION);
@@ -50,7 +53,7 @@ FunctionPatcherStatus FPAddFunctionPatch(function_replacement_data_t *function_d
     }
 
     {
-        std::lock_guard<std::mutex> lock(gPatchedFunctionsMutex);
+        std::lock_guard lock(gPatchedFunctionsMutex);
         gPatchedFunctions.push_back(std::move(functionData));
 
         OSMemoryBarrier();
@@ -64,7 +67,7 @@ bool FunctionPatcherPatchFunction(function_replacement_data_t *function_data, Pa
 }
 
 FunctionPatcherStatus FPRemoveFunctionPatch(PatchedFunctionHandle handle) {
-    std::lock_guard<std::mutex> lock(gPatchedFunctionsMutex);
+    std::lock_guard lock(gPatchedFunctionsMutex);
     std::vector<std::shared_ptr<PatchedFunctionData>> toBeTempRestored;
     bool found            = false;
     int32_t erasePosition = 0;
@@ -132,7 +135,7 @@ FunctionPatcherStatus FPIsFunctionPatched(PatchedFunctionHandle handle, bool *ou
     if (outIsFunctionPatched == nullptr) {
         return FUNCTION_PATCHER_RESULT_INVALID_ARGUMENT;
     }
-    std::lock_guard<std::mutex> lock(gPatchedFunctionsMutex);
+    std::lock_guard lock(gPatchedFunctionsMutex);
     for (auto &cur : gPatchedFunctions) {
         if (cur->getHandle() == handle) {
             *outIsFunctionPatched = cur->isPatched;
diff --git a/source/function_patcher.cpp b/source/function_patcher.cpp
index ea102cf..66d61b0 100644
--- a/source/function_patcher.cpp
+++ b/source/function_patcher.cpp
@@ -4,11 +4,15 @@
 #include "utils/CThread.h"
 #include "utils/logger.h"
 #include "utils/utils.h"
+
 #include <coreinit/cache.h>
 #include <coreinit/debug.h>
 #include <coreinit/memorymap.h>
+
 #include <kernel/kernel.h>
+
 #include <memory>
+#include <mutex>
 
 static void writeDataAndFlushIC(CThread *thread, void *arg) {
     auto *data = (PatchedFunctionData *) arg;
diff --git a/source/main.cpp b/source/main.cpp
index 5818992..15063ac 100644
--- a/source/main.cpp
+++ b/source/main.cpp
@@ -4,9 +4,11 @@
 #include "utils/globals.h"
 #include "utils/logger.h"
 #include "utils/utils.h"
+
 #include <coreinit/memdefaultheap.h>
 #include <coreinit/memexpheap.h>
 #include <kernel/kernel.h>
+#include <mutex>
 #include <ranges>
 #include <set>
 #include <wums.h>
@@ -41,7 +43,7 @@ void UpdateFunctionPointer() {
 }
 
 void CheckIfPatchedFunctionsAreStillInMemory() {
-    std::lock_guard<std::mutex> lock(gPatchedFunctionsMutex);
+    std::lock_guard lock(gPatchedFunctionsMutex);
     // Check if rpl has been unloaded by comparing the instruction.
     std::set<uint32_t> physicalAddressesUnchanged;
     std::set<uint32_t> physicalAddressesChanged;
@@ -129,12 +131,12 @@ void notify_callback(OSDynLoad_Module module,
                      OSDynLoad_NotifyReason reason,
                      OSDynLoad_NotifyData *infos) {
     if (reason == OS_DYNLOAD_NOTIFY_LOADED) {
-        std::lock_guard<std::mutex> lock(gPatchedFunctionsMutex);
+        std::lock_guard lock(gPatchedFunctionsMutex);
         for (auto &cur : gPatchedFunctions) {
             PatchFunction(cur);
         }
     } else if (reason == OS_DYNLOAD_NOTIFY_UNLOADED) {
-        std::lock_guard<std::mutex> lock(gPatchedFunctionsMutex);
+        std::lock_guard lock(gPatchedFunctionsMutex);
         auto library = gFunctionAddressProvider->getTypeForHandle(module);
         if (library != LIBRARY_OTHER) {
             for (auto &cur : gPatchedFunctions) {
@@ -162,7 +164,7 @@ WUMS_APPLICATION_STARTS() {
 
     initLogging();
     {
-        std::lock_guard<std::mutex> lock(gPatchedFunctionsMutex);
+        std::lock_guard lock(gPatchedFunctionsMutex);
         // reset function patch status if the rpl they were patching has been unloaded from memory.
         CheckIfPatchedFunctionsAreStillInMemory();
         DEBUG_FUNCTION_LINE_VERBOSE("Patch all functions");
diff --git a/source/utils/globals.cpp b/source/utils/globals.cpp
index d5a6619..69e5f39 100644
--- a/source/utils/globals.cpp
+++ b/source/utils/globals.cpp
@@ -4,7 +4,7 @@ char gJumpHeapData[JUMP_HEAP_DATA_SIZE] __attribute__((section(".data")));
 MEMHeapHandle gJumpHeapHandle __attribute__((section(".data")));
 
 std::shared_ptr<FunctionAddressProvider> gFunctionAddressProvider;
-std::mutex gPatchedFunctionsMutex;
+std::recursive_mutex gPatchedFunctionsMutex;
 std::vector<std::shared_ptr<PatchedFunctionData>> gPatchedFunctions;
 
 void *(*gMEMAllocFromDefaultHeapExForThreads)(uint32_t size, int align);
diff --git a/source/utils/globals.h b/source/utils/globals.h
index 002e655..94135c9 100644
--- a/source/utils/globals.h
+++ b/source/utils/globals.h
@@ -3,6 +3,7 @@
 #include "version.h"
 #include <coreinit/memheap.h>
 #include <memory>
+#include <mutex>
 #include <vector>
 
 #define MODULE_VERSION      "v0.2.3"
@@ -13,7 +14,7 @@ extern char gJumpHeapData[];
 extern MEMHeapHandle gJumpHeapHandle;
 
 extern std::shared_ptr<FunctionAddressProvider> gFunctionAddressProvider;
-extern std::mutex gPatchedFunctionsMutex;
+extern std::recursive_mutex gPatchedFunctionsMutex;
 extern std::vector<std::shared_ptr<PatchedFunctionData>> gPatchedFunctions;
 
 extern void *(*gMEMAllocFromDefaultHeapExForThreads)(uint32_t size, int align);