lib/arch: Pass jobs to Arch threads as std::function

src/lib/arch/IArchMultithread.h

@@ -19,6 +19,7 @@
 #pragma once
 
 #include "common/IInterface.h"
+#include <functional>
 
 /*!
 \class ArchCondImpl
@@ -160,7 +161,7 @@ public:
     Creates and starts a new thread, using \c func as the entry point
     and passing it \c userData.  The thread is an opaque data type.
     */
-    virtual ArchThread    newThread(ThreadFunc func, void* userData) = 0;
+    virtual ArchThread newThread(const std::function<void()>& func) = 0;
 
     //! Get a reference to the calling thread
     /*!

src/lib/arch/unix/ArchMultithreadPosix.cpp

@@ -59,8 +59,7 @@ public:
     int                    m_refCount;
     IArchMultithread::ThreadID        m_id;
     pthread_t            m_thread;
-    IArchMultithread::ThreadFunc    m_func;
-    void*                m_userData;
+    std::function<void()> func_;;
     bool                m_cancel;
     bool                m_cancelling;
     bool                m_exited;
@@ -70,8 +69,6 @@ public:
 ArchThreadImpl::ArchThreadImpl() :
     m_refCount(1),
     m_id(0),
-    m_func(NULL),
-    m_userData(NULL),
     m_cancel(false),
     m_cancelling(false),
     m_exited(false),
@@ -317,11 +314,8 @@ ArchMultithreadPosix::unlockMutex(ArchMutex mutex)
     }
 }
 
-ArchThread
-ArchMultithreadPosix::newThread(ThreadFunc func, void* data)
+ArchThread ArchMultithreadPosix::newThread(const std::function<void()>& func)
 {
-    assert(func != NULL);
-
     // initialize signal handler.  we do this here instead of the
     // constructor so we can avoid daemonizing (using fork())
     // when there are multiple threads.  clients can safely
@@ -339,8 +333,7 @@ ArchMultithreadPosix::newThread(ThreadFunc func, void* data)
 
     // create thread impl for new thread
     ArchThreadImpl* thread = new ArchThreadImpl;
-    thread->m_func          = func;
-    thread->m_userData      = data;
+    thread->func_ = func;
 
     // create the thread.  pthread_create() on RedHat 7.2 smp fails
     // if passed a NULL attr so use a default attr.
@@ -387,7 +380,7 @@ ArchMultithreadPosix::closeThread(ArchThread thread)
     // decrement ref count and clean up thread if no more references
     if (--thread->m_refCount == 0) {
         // detach from thread (unless it's the main thread)
-        if (thread->m_func != NULL) {
+        if (thread->func_) {
             pthread_detach(thread->m_thread);
         }
 
@@ -691,7 +684,7 @@ ArchMultithreadPosix::doThreadFunc(ArchThread thread)
     }
 
     try {
-        (*thread->m_func)(thread->m_userData);
+        thread->func_();
     }
 
     catch (XThreadCancel&) {

src/lib/arch/unix/ArchMultithreadPosix.h

@@ -67,7 +67,7 @@ public:
     virtual void        closeMutex(ArchMutex);
     virtual void        lockMutex(ArchMutex);
     virtual void        unlockMutex(ArchMutex);
-    virtual ArchThread    newThread(ThreadFunc, void*);
+    virtual ArchThread newThread(const std::function<void()>& func);
     virtual ArchThread    newCurrentThread();
     virtual ArchThread    copyThread(ArchThread);
     virtual void        closeThread(ArchThread);

src/lib/arch/win32/ArchMultithreadWindows.cpp

@@ -49,8 +49,7 @@ public:
     int                    m_refCount;
     HANDLE                m_thread;
     DWORD                m_id;
-    IArchMultithread::ThreadFunc    m_func;
-    void*                m_userData;
+    std::function<void()> func_;
     HANDLE                m_cancel;
     bool                m_cancelling;
     HANDLE                m_exit;
@@ -61,8 +60,6 @@ ArchThreadImpl::ArchThreadImpl() :
     m_refCount(1),
     m_thread(NULL),
     m_id(0),
-    m_func(NULL),
-    m_userData(NULL),
     m_cancelling(false),
     m_networkData(NULL)
 {
@@ -290,15 +287,13 @@ ArchMultithreadWindows::unlockMutex(ArchMutex mutex)
     LeaveCriticalSection(&mutex->m_mutex);
 }
 
-ArchThread
-ArchMultithreadWindows::newThread(ThreadFunc func, void* data)
+ArchThread ArchMultithreadWindows::newThread(const std::function<void()>& func)
 {
     lockMutex(m_threadMutex);
 
     // create thread impl for new thread
     ArchThreadImpl* thread = new ArchThreadImpl;
-    thread->m_func          = func;
-    thread->m_userData      = data;
+    thread->func_ = func;
 
     // create thread
     unsigned int id = 0;
@@ -668,8 +663,7 @@ ArchMultithreadWindows::doThreadFunc(ArchThread thread)
     unlockMutex(m_threadMutex);
 
     try {
-        // go
-        (*thread->m_func)(thread->m_userData);
+        thread->func_();
     }
 
     catch (XThreadCancel&) {

src/lib/arch/win32/ArchMultithreadWindows.h

@@ -73,7 +73,7 @@ public:
     virtual void        closeMutex(ArchMutex);
     virtual void        lockMutex(ArchMutex);
     virtual void        unlockMutex(ArchMutex);
-    virtual ArchThread    newThread(ThreadFunc, void*);
+    virtual ArchThread newThread(const std::function<void()>& func);
     virtual ArchThread    newCurrentThread();
     virtual ArchThread    copyThread(ArchThread);
     virtual void        closeThread(ArchThread);

src/lib/arch/win32/ArchTaskBarWindows.cpp

@@ -88,7 +88,7 @@ ArchTaskBarWindows::init()
     // create a window on the current desktop with the current
     // thread then the current thread won't be able to switch
     // desktops if it needs to.
-    m_thread      = ARCH->newThread(&ArchTaskBarWindows::threadEntry, this);
+    m_thread = ARCH->newThread([this]() { threadMainLoop(); });
 
     // wait for child thread
     while (!m_ready) {
@@ -501,11 +501,6 @@ ArchTaskBarWindows::threadMainLoop()
     UnregisterClass(className, instanceWin32());
 }
 
-void ArchTaskBarWindows::threadEntry(void* self)
-{
-    static_cast<ArchTaskBarWindows*>(self)->threadMainLoop();
-}
-
 HINSTANCE ArchTaskBarWindows::instanceWin32()
 {
     return ArchMiscWindows::instanceWin32();

src/lib/arch/win32/ArchTaskBarWindows.h

@@ -84,7 +84,6 @@ private:
     static LRESULT CALLBACK
                         staticWndProc(HWND, UINT, WPARAM, LPARAM);
     void                threadMainLoop();
-    static void threadEntry(void*);
 
     HINSTANCE            instanceWin32();
 

src/lib/mt/Thread.cpp

@@ -30,7 +30,7 @@
 
 Thread::Thread(IJob* job)
 {
-    m_thread = ARCH->newThread(&Thread::threadFunc, job);
+    m_thread = ARCH->newThread([job](){ threadFunc(job); });
     if (m_thread == NULL) {
         // couldn't create thread
         delete job;
@@ -126,7 +126,7 @@ Thread::operator!=(const Thread& thread) const
     return !ARCH->isSameThread(m_thread, thread.m_thread);
 }
 
-void Thread::threadFunc(void* vjob)
+void Thread::threadFunc(IJob* job)
 {
     // get this thread's id for logging
     IArchMultithread::ThreadID id;
@@ -136,9 +136,6 @@ void Thread::threadFunc(void* vjob)
         ARCH->closeThread(thread);
     }
 
-    // get job
-    IJob* job = static_cast<IJob*>(vjob);
-
     try {
         // go
         LOG((CLOG_DEBUG1 "thread 0x%08x entry", id));

src/lib/mt/Thread.h

@@ -192,7 +192,7 @@ public:
 private:
     Thread(ArchThread);
 
-    static void threadFunc(void*);
+    static void threadFunc(IJob*);
 
 private:
     ArchThread            m_thread;