cppu : use std::mutex in threadpool

Change-Id: I559a2c533accfe95740c29d726833d0bbab210fa
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/112460
Tested-by: Jenkins
Reviewed-by: Stephan Bergmann <sbergman@redhat.com>

3 files changed, 21 insertions, 21 deletions

diff --git a/cppu/source/threadpool/thread.cxx b/cppu/source/threadpool/thread.cxx
index 794d8f35e7ec..c0c3bc9ae61d 100644
--- a/cppu/source/threadpool/thread.cxx
+++ b/cppu/source/threadpool/thread.cxx
@@ -42,9 +42,8 @@ namespace cppu_threadpool {
         SAL_WARN_IF(m_deque.size(), "cppu.threadpool", m_deque.size() << "Threads left");
     }
 
-    bool ThreadAdmin::add( rtl::Reference< ORequestThread > const & p )
+    bool ThreadAdmin::add_locked( rtl::Reference< ORequestThread > const & p )
     {
-        MutexGuard aGuard( m_mutex );
         if( m_disposed )
         {
             return false;
@@ -60,21 +59,21 @@ namespace cppu_threadpool {
 
     void ThreadAdmin::remove( rtl::Reference< ORequestThread > const & p )
     {
-        MutexGuard aGuard( m_mutex );
+        std::scoped_lock aGuard( m_mutex );
         remove_locked( p );
     }
 
     void ThreadAdmin::join()
     {
         {
-            MutexGuard aGuard( m_mutex );
+            std::scoped_lock aGuard( m_mutex );
             m_disposed = true;
         }
         for (;;)
         {
             rtl::Reference< ORequestThread > pCurrent;
             {
-                MutexGuard aGuard( m_mutex );
+                std::scoped_lock aGuard( m_mutex );
                 if( m_deque.empty() )
                 {
                     break;
@@ -118,8 +117,8 @@ namespace cppu_threadpool {
         // return value iff it causes osl::Thread::run to start executing:
         acquire();
         ThreadAdmin & rThreadAdmin = m_aThreadPool->getThreadAdmin();
-        osl::ClearableMutexGuard g(rThreadAdmin.m_mutex);
-        if (!rThreadAdmin.add( this )) {
+        std::unique_lock g(rThreadAdmin.m_mutex);
+        if (!rThreadAdmin.add_locked( this )) {
             return false;
         }
         try {
@@ -128,7 +127,7 @@ namespace cppu_threadpool {
             }
         } catch (...) {
             rThreadAdmin.remove_locked( this );
-            g.clear();
+            g.release();
             release();
             throw;
         }
diff --git a/cppu/source/threadpool/threadpool.cxx b/cppu/source/threadpool/threadpool.cxx
index c5783dc19989..257155027955 100644
--- a/cppu/source/threadpool/threadpool.cxx
+++ b/cppu/source/threadpool/threadpool.cxx
@@ -99,7 +99,7 @@ namespace cppu_threadpool
     {
         m_DisposedCallerAdmin->dispose( nDisposeId );
 
-        MutexGuard guard( m_mutex );
+        std::scoped_lock guard( m_mutex );
         for (auto const& item :  m_mapQueue)
         {
             if( item.second.first )
@@ -127,7 +127,7 @@ namespace cppu_threadpool
     {
         WaitingThread waitingThread(pThread);
         {
-            MutexGuard guard( m_mutexWaitingThreadList );
+            std::scoped_lock guard( m_mutexWaitingThreadList );
             m_dequeThreads.push_front( &waitingThread );
         }
 
@@ -135,7 +135,7 @@ namespace cppu_threadpool
         waitingThread.condition.wait( std::chrono::seconds(2) );
 
         {
-            MutexGuard guard ( m_mutexWaitingThreadList );
+            std::scoped_lock guard ( m_mutexWaitingThreadList );
             if( waitingThread.thread.is() )
             {
                 // thread wasn't reused, remove it from the list
@@ -150,7 +150,7 @@ namespace cppu_threadpool
     void ThreadPool::joinWorkers()
     {
         {
-            MutexGuard guard( m_mutexWaitingThreadList );
+            std::scoped_lock guard( m_mutexWaitingThreadList );
             for (auto const& thread : m_dequeThreads)
             {
                 // wake the threads up
@@ -166,7 +166,7 @@ namespace cppu_threadpool
     {
         {
             // Can a thread be reused ?
-            MutexGuard guard( m_mutexWaitingThreadList );
+            std::scoped_lock guard( m_mutexWaitingThreadList );
             if( ! m_dequeThreads.empty() )
             {
                 // inform the thread and let it go
@@ -190,7 +190,7 @@ namespace cppu_threadpool
 
     bool ThreadPool::revokeQueue( const ByteSequence &aThreadId, bool bAsynchron )
     {
-        MutexGuard guard( m_mutex );
+        std::scoped_lock guard( m_mutex );
 
         ThreadIdHashMap::iterator ii = m_mapQueue.find( aThreadId );
         OSL_ASSERT( ii != m_mapQueue.end() );
@@ -240,7 +240,7 @@ namespace cppu_threadpool
         bool bCreateThread = false;
         JobQueue *pQueue = nullptr;
         {
-            MutexGuard guard( m_mutex );
+            std::scoped_lock guard( m_mutex );
             if (m_DisposedCallerAdmin->isDisposed(disposeId)) {
                 return true;
             }
@@ -285,7 +285,7 @@ namespace cppu_threadpool
 
     void ThreadPool::prepare( const ByteSequence &aThreadId )
     {
-        MutexGuard guard( m_mutex );
+        std::scoped_lock guard( m_mutex );
 
         ThreadIdHashMap::iterator ii = m_mapQueue.find( aThreadId );
 
@@ -304,7 +304,7 @@ namespace cppu_threadpool
     {
         JobQueue *pQueue = nullptr;
         {
-            MutexGuard guard( m_mutex );
+            std::scoped_lock guard( m_mutex );
 
             ThreadIdHashMap::iterator ii = m_mapQueue.find( aThreadId );
 
diff --git a/cppu/source/threadpool/threadpool.hxx b/cppu/source/threadpool/threadpool.hxx
index e112f05805d0..5b758703579a 100644
--- a/cppu/source/threadpool/threadpool.hxx
+++ b/cppu/source/threadpool/threadpool.hxx
@@ -19,6 +19,7 @@
 
 #pragma once
 
+#include <mutex>
 #include <vector>
 #include <unordered_map>
 
@@ -98,12 +99,12 @@ namespace cppu_threadpool {
         ThreadAdmin();
         ~ThreadAdmin ();
 
-        bool add( rtl::Reference< ORequestThread > const & );
         void remove( rtl::Reference< ORequestThread > const & );
         void join();
 
+        bool add_locked( rtl::Reference< ORequestThread > const & );
         void remove_locked( rtl::Reference< ORequestThread > const & );
-        ::osl::Mutex m_mutex;
+        std::mutex m_mutex;
 
     private:
         std::deque< rtl::Reference< ORequestThread > > m_deque;
@@ -147,9 +148,9 @@ namespace cppu_threadpool {
 
 
         ThreadIdHashMap m_mapQueue;
-        ::osl::Mutex m_mutex;
+        std::mutex m_mutex;
 
-        ::osl::Mutex m_mutexWaitingThreadList;
+        std::mutex m_mutexWaitingThreadList;
         WaitingThreadDeque m_dequeThreads;
 
         DisposedCallerAdminHolder m_DisposedCallerAdmin;