X-Git-Url: https://git.cworth.org/git?a=blobdiff_plain;f=common%2Fos_thread.hpp;h=9d6a9891524564803d844bfe923de13dfd8442c0;hb=23354536051650b7a8a713e824946d48a7734534;hp=727ad6a484ff0c94a1e8d76bd4a88a3dd846dc15;hpb=0af9670e1d6fe6e9dc6d38c7b28e18a5fea7d009;p=apitrace

diff --git a/common/os_thread.hpp b/common/os_thread.hpp
index 727ad6a..9d6a989 100644
--- a/common/os_thread.hpp
+++ b/common/os_thread.hpp
@@ -1,6 +1,6 @@
 /**************************************************************************
  *
- * Copyright 2011 Jose Fonseca
+ * Copyright 2011-2012 Jose Fonseca
  * All Rights Reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
@@ -32,6 +32,7 @@
 #ifndef _OS_THREAD_HPP_
 #define _OS_THREAD_HPP_
 
+
 #ifdef _WIN32
 #include <windows.h>
 #else
@@ -41,38 +42,295 @@
 namespace os {
 
 
-    namespace thread {
+    /**
+     * Base class for mutex and recursive_mutex.
+     */
+    class _base_mutex
+    {
+    public:
+#ifdef _WIN32
+        typedef CRITICAL_SECTION native_handle_type;
+#else
+        typedef pthread_mutex_t native_handle_type;
+#endif
+
+        _base_mutex(void) {
+#ifdef _WIN32
+            InitializeCriticalSection(&_native_handle);
+#else
+            pthread_mutexattr_t attr;
+            pthread_mutexattr_init(&attr);
+            pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE);
+            pthread_mutex_init(&_native_handle, &attr);
+            pthread_mutexattr_destroy(&attr);
+#endif
+        }
+
+        ~_base_mutex() {
+#ifdef _WIN32
+            DeleteCriticalSection(&_native_handle);
+#else
+            pthread_mutex_destroy(&_native_handle);
+#endif
+        }
+
+        inline void
+        lock(void) {
+#ifdef _WIN32
+            EnterCriticalSection(&_native_handle);
+#else
+            pthread_mutex_lock(&_native_handle);
+#endif
+        }
+
+        inline void
+        unlock(void) {
+#ifdef _WIN32
+            LeaveCriticalSection(&_native_handle);
+#else
+            pthread_mutex_unlock(&_native_handle);
+#endif
+        }
+
+        native_handle_type & native_handle() {
+            return _native_handle;
+        }
+
+    protected:
+        native_handle_type _native_handle;
+    };
+
 
-        /**
-         * Thread ID
-         *
-         * XXX: Actually C++11 thread::id is not an integral type, but we rely on that.
-         */
+    /**
+     * Same interface as std::mutex.
+     */
+    class mutex : public _base_mutex
+    {
+    public:
+        inline
+        mutex(void) {
 #ifdef _WIN32
-        typedef DWORD id;
+            InitializeCriticalSection(&_native_handle);
 #else
-        typedef pthread_t id;
+            pthread_mutex_init(&_native_handle, NULL);
 #endif
+        }
+    };
+
+
+    /**
+     * Same interface as std::recursive_mutex.
+     */
+    class recursive_mutex : public _base_mutex
+    {
+    public:
+        inline
+        recursive_mutex(void) {
+#ifdef _WIN32
+            InitializeCriticalSection(&_native_handle);
+#else
+            pthread_mutexattr_t attr;
+            pthread_mutexattr_init(&attr);
+            pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE);
+            pthread_mutex_init(&_native_handle, &attr);
+            pthread_mutexattr_destroy(&attr);
+#endif
+        }
+    };
+
+
+    /**
+     * Same interface as std::unique_lock;
+     */
+    template< class Mutex >
+    class unique_lock
+    {
+    public:
+        typedef Mutex mutex_type;
+
+        inline explicit
+        unique_lock(mutex_type & mutex) :
+            _mutex(&mutex)
+        {
+            _mutex->lock();
+        }
+
+        inline
+        ~unique_lock() {
+            _mutex->unlock();
+        }
+
+        inline void
+        lock() {
+            _mutex->lock();
+        }
+
+        inline void
+        unlock() {
+            _mutex->unlock();
+        }
 
-    } /* namespace thread */
+        mutex_type *
+        mutex() const {
+            return _mutex;
+        }
 
+    protected:
+        mutex_type *_mutex;
+    };
+
+
+    /**
+     * Same interface as std::condition_variable
+     */
+    class condition_variable
+    {
+    public:
+#ifdef _WIN32
+        /* FIXME */
+#else
+        typedef pthread_cond_t native_handle_type;
+#endif
 
-    namespace this_thread {
+        condition_variable() {
+#ifdef _WIN32
+            /* FIXME */
+#else
+            pthread_cond_init(&_native_handle, NULL);
+#endif
+        }
 
-        /**
-         * Get current thread ID.
-         */
-        inline thread::id
-        get_id(void) {
+        ~condition_variable() {
 #ifdef _WIN32
-            return GetCurrentThreadId();
+            /* FIXME */
 #else
-            return pthread_self();
+            pthread_cond_destroy(&_native_handle);
 #endif
         }
 
-    } /* namespace this_thread */
+        inline void
+        signal(void) {
+#ifdef _WIN32
+            /* FIXME */
+#else
+            pthread_cond_signal(&_native_handle);
+#endif
+        }
+
+        inline void
+        wait(unique_lock<mutex> & lock) {
+#ifdef _WIN32
+            /* FIXME */
+#else
+            pthread_cond_wait(&_native_handle, &lock.mutex()->native_handle());
+#endif
+        }
+
+    protected:
+        native_handle_type _native_handle;
+    };
+
+
+    /**
+     * Same interface as boost::thread_specific_ptr.
+     */
+    template <typename T>
+    class thread_specific_ptr
+    {
+    private:
+#ifdef _WIN32
+        DWORD dwTlsIndex;
+#else
+        pthread_key_t key;
+
+        static void destructor(void *ptr) {
+            delete static_cast<T *>(ptr);
+        }
+#endif
+
+    public:
+        thread_specific_ptr(void) {
+#ifdef _WIN32
+            dwTlsIndex = TlsAlloc();
+#else
+            pthread_key_create(&key, &destructor);
+#endif
+        }
+
+        ~thread_specific_ptr() {
+#ifdef _WIN32
+            TlsFree(dwTlsIndex);
+#else
+            pthread_key_delete(key);
+#endif
+        }
+
+        T* get(void) const {
+            void *ptr;
+#ifdef _WIN32
+            ptr = TlsGetValue(dwTlsIndex);
+#else
+            ptr = pthread_getspecific(key);
+#endif
+            return static_cast<T*>(ptr);
+        }
+
+        T* operator -> (void) const
+        {
+            return get();
+        }
+
+        T& operator * (void) const
+        {
+            return *get();
+        }
+
+        void reset(T* new_value=0) {
+            T * old_value = get();
+#ifdef _WIN32
+            TlsSetValue(dwTlsIndex, new_value);
+#else
+            pthread_setspecific(key, new_value);
+#endif
+            if (old_value) {
+                delete old_value;
+            }
+        }
+    };
+
+
+    /**
+     * Same interface as std::thread
+     */
+    class thread {
+    public:
+#ifdef _WIN32
+        /* FIXME */
+#else
+        typedef pthread_t native_handle_type;
+#endif
+
+        template< class Function, class Arg >
+        explicit thread( Function& f, Arg & arg ) {
+#ifdef _WIN32
+            /* FIXME */
+#else
+            pthread_create(&_native_handle, NULL, f, arg);
+#endif
+        }
+
+        inline void
+        join() {
+#ifdef _WIN32
+            /* FIXME */
+#else
+            pthread_join(_native_handle, NULL);
+#endif
+        }
 
+    private:
+        native_handle_type _native_handle;
+    };
 
 } /* namespace os */