Use compiler TLS support.

[apitrace] / common / os_thread.hpp

diff --git a/common/os_thread.hpp b/common/os_thread.hpp
index b17563fa5428d2ac80a4b5d18adf916c6c69ac75..6c0b488c0152474a031a82839b0c767777714fdd 100644 (file)
--- 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
@@ -39,10 +39,31 @@
 #include <pthread.h>
 #endif
 
+
+/**
+ * Compiler TLS.
+ *
+ * See also:
+ * - http://gcc.gnu.org/onlinedocs/gcc-4.6.3/gcc/Thread_002dLocal.html
+ * - http://msdn.microsoft.com/en-us/library/9w1sdazb.aspx
+ */
+#if defined(_MSC_VER)
+#  define thread_specific __declspec(thread)
+#elif defined(__GNUC__)
+#  define thread_specific __thread
+#else
+#  define thread_specific
+#  error "Unsupported compiler"
+#endif
+
+
 namespace os {
 
 
-    class recursive_mutex
+    /**
+     * Base class for mutex and recursive_mutex.
+     */
+    class _base_mutex
     {
     public:
 #ifdef _WIN32
@@ -51,19 +72,19 @@ namespace os {
         typedef pthread_mutex_t native_handle_type;
 #endif
 
-        recursive_mutex(void) {
+        _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, NULL);
+            pthread_mutex_init(&_native_handle, &attr);
             pthread_mutexattr_destroy(&attr);
 #endif
         }
 
-        ~recursive_mutex() {
+        ~_base_mutex() {
 #ifdef _WIN32
             DeleteCriticalSection(&_native_handle);
 #else
@@ -89,11 +110,150 @@ namespace os {
 #endif
         }
 
-    private:
+        native_handle_type & native_handle() {
+            return _native_handle;
+        }
+
+    protected:
+        native_handle_type _native_handle;
+    };
+
+
+    /**
+     * Same interface as std::mutex.
+     */
+    class mutex : public _base_mutex
+    {
+    public:
+        inline
+        mutex(void) {
+#ifdef _WIN32
+            InitializeCriticalSection(&_native_handle);
+#else
+            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();
+        }
+
+        mutex_type *
+        mutex() const {
+            return _mutex;
+        }
+
+    protected:
+        mutex_type *_mutex;
+    };
+
+
+    /**
+     * Same interface as std::condition_variable
+     */
+    class condition_variable
+    {
+    public:
+#ifdef _WIN32
+        typedef CONDITION_VARIABLE native_handle_type;
+#else
+        typedef pthread_cond_t native_handle_type;
+#endif
+
+        condition_variable() {
+#ifdef _WIN32
+            InitializeConditionVariable(&_native_handle);
+#else
+            pthread_cond_init(&_native_handle, NULL);
+#endif
+        }
+
+        ~condition_variable() {
+#ifdef _WIN32
+            /* No-op */
+#else
+            pthread_cond_destroy(&_native_handle);
+#endif
+        }
+
+        inline void
+        signal(void) {
+#ifdef _WIN32
+            WakeConditionVariable(&_native_handle);
+#else
+            pthread_cond_signal(&_native_handle);
+#endif
+        }
+
+        inline void
+        wait(unique_lock<mutex> & lock) {
+            mutex::native_handle_type & mutex_native_handle = lock.mutex()->native_handle();
+#ifdef _WIN32
+            /* FIXME */
+            SleepConditionVariableCS(&_native_handle, &mutex_native_handle, INFINITE);
+#else
+            pthread_cond_wait(&_native_handle, &mutex_native_handle);
+#endif
+        }
+
+    protected:
         native_handle_type _native_handle;
     };
 
 
+    /**
+     * Same interface as boost::thread_specific_ptr.
+     */
     template <typename T>
     class thread_specific_ptr
     {
@@ -147,17 +307,74 @@ namespace os {
 
         void reset(T* new_value=0) {
             T * old_value = get();
+            set(new_value);
+            if (old_value) {
+                delete old_value;
+            }
+        }
+
+        T* release (void) {
+            T * old_value = get();
+            set(0);
+            return old_value;
+        }
+
+private:
+        void set(T* new_value) {
 #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
+        typedef HANDLE native_handle_type;
+#else
+        typedef pthread_t native_handle_type;
+#endif
+
+        template< class Function, class Arg >
+        explicit thread( Function& f, Arg arg ) {
+#ifdef _WIN32
+            /* FIXME */
+            DWORD id = 0;
+            _native_handle = CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE)f, (LPVOID)arg, 0, &id);
+#else
+            pthread_create(&_native_handle, NULL, f, arg);
+#endif
+        }
+
+        inline void
+        join() {
+#ifdef _WIN32
+            WaitForSingleObject(_native_handle, INFINITE);
+#else
+            pthread_join(_native_handle, NULL);
+#endif
+        }
+
+    private:
+        native_handle_type _native_handle;
+
+#if 0
+#ifdef _WIN32
+        template< class Function, class Arg >
+        static DWORD WINAPI
+        ThreadProc(LPVOID lpParameter) {
+
+        );
+#endif
+#endif
+    };
+
 } /* namespace os */
 
 #endif /* _OS_THREAD_HPP_ */