/******************************************************************************

    This file is part of gtkD.

    gtkD is free software; you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as published by
    the Free Software Foundation; either version 2.1 of the License, or
    (at your option) any later version.
 
    gtkD is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public License
    along with gtkD; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

******************************************************************************/

module dwt.internal.gtk.c.gthreadtypes;

public import dwt.internal.gtk.c.glibtypes;

/******************************************************************************

    Possible errors of thread related functions.
    G_THREAD_ERROR_AGAIN
    a thread couldn't be created due to resource
    shortage. Try again later.

******************************************************************************/

public enum GThreadError
{
	AGAIN /+* Resource temporarily unavailable +/
}
alias GThreadError ThreadError;

/**
 * Specifies the priority of a thread.
 * Note
 * It is not guaranteed that threads with different priorities really
 * behave accordingly. On some systems (e.g. Linux) there are no thread
 * priorities. On other systems (e.g. Solaris) there doesn't seem to be
 * different scheduling for different priorities. All in all try to avoid
 * being dependent on priorities.
 * G_THREAD_PRIORITY_LOW
 * a priority lower than normal
 * G_THREAD_PRIORITY_NORMAL
 * the default priority
 * G_THREAD_PRIORITY_HIGH
 * a priority higher than normal
 * G_THREAD_PRIORITY_URGENT
 * the highest priority
 */
public enum GThreadPriority
{
	LOW,
	NORMAL,
	HIGH,
	URGENT
}
alias GThreadPriority ThreadPriority;

/**
 * The possible statuses of a one-time initialization function controlled by a GOnce struct.
 * G_ONCE_STATUS_NOTCALLED
 * the function has not been called yet.
 * G_ONCE_STATUS_PROGRESS
 * the function call is currently in progress.
 * G_ONCE_STATUS_READY
 * the function has been called.
 * Since 2.4
 */
public enum GOnceStatus
{
	NOTCALLED,
	PROGRESS,
	READY
}
alias GOnceStatus OnceStatus;


/**
 * This function table is used by g_thread_init() to initialize the
 * thread system. The functions in the table are directly used by their
 * g_* prepended counterparts (described in this document). For example,
 * if you call g_mutex_new() then mutex_new() from the table provided to
 * g_thread_init() will be called.
 * Note
 * Do not use this struct unless you know what you are doing.
 */
public struct GThreadFunctions{}
// GMutex* (*mutexNew) (void);
//
// void (*mutexLock) (GMutex *mutex);
//
// int (*mutexTrylock) (GMutex *mutex);
//
// void (*mutexUnlock) (GMutex *mutex);
//
// void (*mutexFree) (GMutex *mutex);
//
// GCond* (*condNew) (void);
//
// void (*condSignal) (GCond *cond);
//
// void (*condBroadcast) (GCond *cond);
//
// void (*condWait) (GCond *cond,
//
// GMutex *mutex);
//
// int (*condTimedWait) (GCond *cond,
//
// GMutex *mutex,
//
// GTimeVal *endTime);
//
// void (*condFree) (GCond *cond);
//
// GPrivate* (*privateNew) (GDestroyNotify destructor);
//
// void* (*privateGet) (GPrivate *privateKey);
//
// void (*privateSet) (GPrivate *privateKey,
//
// void* data);
//
// void (*threadCreate) (GThreadFunc func,
//
// void* data,
//
// uint stackSize,
//
// int joinable,
//
// int bound,
//
// GThreadPriority priority,
//
// void* thread,
//
// GError **error);
//
// void (*threadYield) (void);
//
// void (*threadJoin) (void* thread);
//
// void (*threadExit) (void);
//
// void (*threadSetPriority)(void* thread,
//
// GThreadPriority priority);
//
// void (*threadSelf) (void* thread);
//
// int (*threadEqual) (void* thread1,
//
// void* thread2);
//


/**
 * Main Gtk struct.
 * The GThread struct represents a running thread. It has three public
 * read-only members, but the underlying struct is bigger, so you must
 * not copy this struct.
 * Note
 * Resources for a joinable thread are not fully released until
 * g_thread_join() is called for that thread.
 */
public struct GThread{}


/**
 * The GMutex struct is an opaque data structure to represent a mutex
 * (mutual exclusion). It can be used to protect data against shared
 * access. Take for example the following function:
 * Example2.A function which will not work in a threaded environment
 */
public struct GMutex{}


/**
 * A GStaticMutex works like a GMutex, but it has one significant
 * advantage. It doesn't need to be created at run-time like a GMutex,
 * but can be defined at compile-time. Here is a shorter, easier and
 * safer version of our give_me_next_number() example:
 * Example5.Using GStaticMutex to simplify thread-safe programming
 */
public struct GStaticMutex{}


/**
 * A GStaticRecMutex works like a GStaticMutex, but it can be locked
 * multiple times by one thread. If you enter it n times, you have to
 * unlock it n times again to let other threads lock it. An exception is
 * the function g_static_rec_mutex_unlock_full(): that allows you to
 * unlock a GStaticRecMutex completely returning the depth, (i.e. the
 * number of times this mutex was locked). The depth can later be used to
 * restore the state of the GStaticRecMutex by calling
 * g_static_rec_mutex_lock_full().
 * Even though GStaticRecMutex is not opaque, it should only be used with
 * the following functions.
 * All of the g_static_rec_mutex_* functions can be
 * used even if g_thread_init() has not been called. Then they do
 * nothing, apart from g_static_rec_mutex_trylock,
 * which does nothing but returning TRUE.
 */
public struct GStaticRecMutex{}


/**
 * The GStaticRWLock struct represents a read-write lock. A read-write
 * lock can be used for protecting data that some portions of code only
 * read from, while others also write. In such situations it is
 * desirable that several readers can read at once, whereas of course
 * only one writer may write at a time. Take a look at the following
 * example:
 * Example7.An array with access functions
 */
public struct GStaticRWLock{}


/**
 * The GCond struct is an opaque data structure that represents a
 * condition. Threads can block on a GCond if they find a certain
 * condition to be false. If other threads change the state of this
 * condition they signal the GCond, and that causes the waiting threads
 * to be woken up.
 * Example8.Using GCond to block a thread until a condition is satisfied
 * GCond* data_cond = NULL; /+* Must be initialized somewhere +/
 * GMutex* data_mutex = NULL; /+* Must be initialized somewhere +/
 * gpointer current_data = NULL;
 * void push_data (gpointer data)
 * {
	 */
public struct GCond{}


/**
 * The GPrivate struct is an opaque data structure to represent a thread
 * private data key. Threads can thereby obtain and set a pointer which
 * is private to the current thread.
 * Take our give_me_next_number() example from above.
 * Suppose we don't want current_number to be shared
 * between the threads, but instead to be private to each thread. This can be
 * done as follows:
 * Example9.Using GPrivate for per-thread data
 */
public struct GPrivate{}


/**
 * A GStaticPrivate works almost like a GPrivate, but it has one
 * significant advantage. It doesn't need to be created at run-time like
 * a GPrivate, but can be defined at compile-time. This is similar to
 * the difference between GMutex and GStaticMutex. Now look at our
 * give_me_next_number() example with ""
 * Example10.Using GStaticPrivate for per-thread data
 */
public struct GStaticPrivate{}


/**
 * A GOnce struct controls a one-time initialization
 * function. Any one-time initialization function must have its own unique
 * GOnce struct.
 * volatileGOnceStatusstatus;
 * the status of the GOnce
 * volatilegpointerretval;
 * the value returned by the call to the function, if status
 */
public struct GOnce
{
	GOnceStatus status;
	void* retval;
}


/*
 * The G_LOCK_* macros provide a convenient interface to GStaticMutex
 * with the advantage that they will expand to nothing in programs
 * compiled against a thread-disabled GLib, saving code and memory
 * there. G_LOCK_DEFINE defines a lock. It can appear anywhere variable
 * definitions may appear in programs, i.e. in the first block of a
 * function or outside of functions. The name parameter will be mangled
 * to get the name of the GStaticMutex. This means that you can use
 * names of existing variables as the parameter - e.g. the name of the
 * variable you intent to protect with the lock. Look at our
 * give_me_next_number() example using the G_LOCK_* macros:
 * Example6.Using the G_LOCK_* convenience macros
 * G_LOCK_DEFINE (current_number);
 * int give_me_next_number ()
 *  {
	 *  static int current_number = 0;
	 *  int ret_val;
	 *  G_LOCK (current_number);
	 *  ret_val = current_number = calc_next_number (current_number);
	 *  G_UNLOCK (current_number);
	 *  return ret_val;
 *  }
 * name:
 * the name of the lock.
 */
// TODO
// #define G_LOCK_DEFINE(name)

/*
 * This works like G_LOCK_DEFINE, but it creates a static object.
 * name:
 * the name of the lock.
 */
// TODO
// #define G_LOCK_DEFINE_STATIC(name)

/*
 * This declares a lock, that is defined with G_LOCK_DEFINE in another module.
 * name:
 * the name of the lock.
 */
// TODO
// #define G_LOCK_EXTERN(name)

/*
 * Works like g_mutex_lock(), but for a lock defined with G_LOCK_DEFINE.
 * name:
 * the name of the lock.
 */
// TODO
// #define G_LOCK(name)

/*
 * Works like g_mutex_trylock(), but for a lock defined with G_LOCK_DEFINE.
 * name:
 * the name of the lock.
 * Returns:
 * TRUE, if the lock could be locked.
 */
// TODO
// #define G_TRYLOCK(name)

/*
 * Works like g_mutex_unlock(), but for a lock defined with G_LOCK_DEFINE.
 * name:
 * the name of the lock.
 */
// TODO
// #define G_UNLOCK(name)

/*
 * The first call to this routine by a process with a given GOnce struct calls
 * func with the given argument. Thereafter, subsequent calls to g_once() with
 * the same GOnce struct do not call func again, but return the stored result
 * of the first call. On return from g_once(), the status of once will be
 * G_ONCE_STATUS_READY.
 * For example, a mutex or a thread-specific data key must be created exactly
 * once. In a threaded environment, calling g_once() ensures that the
 * initialization is serialized across multiple threads.
 * Note
 * Calling g_once() recursively on the same GOnce struct in func will lead
 * to a deadlock.
 * gpointer
 * get_debug_flags ()
 * {
	 *  static GOnce my_once = G_ONCE_INIT;
	 *  g_once (my_once, parse_debug_flags, NULL);
	 *  return my_once.retval;
 * }
 * once:
 * a GOnce structure
 * func:
 * the GThreadFunc function associated to once. This function is
 *  called only once, regardless of the number of times it and its
 *  associated GOnce struct are passed to g_once() .
 * arg:
 *  data to be passed to func
 * Since 2.4
 */
// TODO
// #define g_once(once, func, arg)

/*
 * Specifies the type of the func functions passed to
 * g_thread_create() or g_thread_create_full().
 * data:
 * data passed to the thread.
 * Returns:
 * the return value of the thread, which will be returned by
 * g_thread_join().
 */
// gpointer (*GThreadFunc) (gpointer data);
public typedef extern(C) void*  function (void*) GThreadFunc;