Operation.c File Reference

#include <assert.h>
#include "OperationQueue.h"

Go to the source code of this file.

Macros
#define	_Class   _Operation

Functions
Class *	_Operation (void)
static void	addDependency (Operation *self, Operation *dependency)
static void	cancel (Operation *self)
static Object *	copy (const Object *self)
static void	dealloc (Object *self)
static Array *	dependencies (const Operation *self)
static Operation *	init (Operation *self)
static void	initialize (Class *clazz)
static Operation *	initWithFunction (Operation *self, OperationFunction function, ident data)
static bool	isReady (const Operation *self)
static void	removeDepdenency (Operation *self, Operation *dependency)
static void	start (Operation *self)
static void	waitUntilFinished (const Operation *self)

Macro Definition Documentation

_Class

#define _Class   _Operation

Definition at line 28 of file Operation.c.

Function Documentation

_Operation()

Class * _Operation

(

void

)

Definition at line 234 of file Operation.c.

                        {
  static Class *clazz;
  static Once once;
 
  do_once(&once, {
    clazz = _initialize(&(const ClassDef) {
      .name = "Operation",
      .superclass = _Object(),
      .instanceSize = sizeof(Operation),
      .interfaceOffset = offsetof(Operation, interface),
      .interfaceSize = sizeof(OperationInterface),
      .initialize = initialize,
    });
  });
 
  return clazz;
}

addDependency()

static void addDependency ( Operation *  self, Operation *  dependency  )

static

Definition at line 59 of file Operation.c.

                                                                  {
 
  assert(dependency);
  assert(dependency != self);
 
  assert($((Array *) self->locals.dependencies, indexOfObject, dependency) == -1);
 
  $(self->locals.dependencies, addObject, dependency);
}

cancel()

static void cancel ( Operation *  self )

static

Definition at line 73 of file Operation.c.

                                    {
 
  if (self->isCancelled == false) {
    if (self->isFinished == false) {
      if (self->isExecuting == false) {
        self->isCancelled = true;
 
        OperationQueue *queue = self->locals.queue;
        if (queue) {
          synchronized(queue->locals.condition, {
            $(queue->locals.condition, signal);
          });
        }
      }
    }
  }
}

copy()

static Object * copy ( const Object *  self )

static

See also

Object::copy(const Object *)

Definition at line 35 of file Operation.c.

                                        {
 
  return NULL;
}

dealloc()

static void dealloc ( Object *  self )

static

See also

Object::dealloc(Object *)

Definition at line 43 of file Operation.c.

                                  {
 
  Operation *this = (Operation *) self;
 
  release(this->locals.condition);
  release(this->locals.dependencies);
 
  super(Object, self, dealloc);
}

dependencies()

static Array * dependencies ( const Operation *  self )

static

Definition at line 95 of file Operation.c.

                                                  {
 
  ident dependencies = $((Object *) self->locals.dependencies, copy);
 
  return (Array *) dependencies;
}

init()

static Operation * init ( Operation *  self )

static

Definition at line 106 of file Operation.c.

                                        {
 
  self = (Operation *) super(Object, self, init);
  if (self) {
 
    self->locals.condition = $(alloc(Condition), init);
    assert(self->locals.condition);
 
    self->locals.dependencies = $(alloc(Array), init);
    assert(self->locals.dependencies);
  }
 
  return self;
}

initialize()

static void initialize ( Class *  clazz )

static

See also

Class::initialize(Class *)

Definition at line 214 of file Operation.c.

                                     {
 
  ((ObjectInterface *) clazz->interface)->copy = copy;
  ((ObjectInterface *) clazz->interface)->dealloc = dealloc;
 
  ((OperationInterface *) clazz->interface)->addDependency = addDependency;
  ((OperationInterface *) clazz->interface)->cancel = cancel;
  ((OperationInterface *) clazz->interface)->dependencies = dependencies;
  ((OperationInterface *) clazz->interface)->init = init;
  ((OperationInterface *) clazz->interface)->initWithFunction = initWithFunction;
  ((OperationInterface *) clazz->interface)->isReady = isReady;
  ((OperationInterface *) clazz->interface)->removeDependency = removeDepdenency;
  ((OperationInterface *) clazz->interface)->start = start;
  ((OperationInterface *) clazz->interface)->waitUntilFinished = waitUntilFinished;
}

initWithFunction()

static Operation * initWithFunction ( Operation *  self, OperationFunction  function, ident  data  )

static

Definition at line 125 of file Operation.c.

                                                                                            {
 
  self = $(self, init);
  if (self) {
    self->function = function;
    self->data = data;
  }
 
  return self;
}

isReady()

static bool isReady ( const Operation *  self )

static

Definition at line 140 of file Operation.c.

                                           {
 
  if (self->isDispatched || self->isExecuting || self->isFinished) {
    return false;
  }
 
  if (self->isCancelled) {
    return true;
  }
 
  const Array *dependencies = (Array *) self->locals.dependencies;
  for (size_t i = 0; i < dependencies->count; i++) {
 
    Operation *dependency = $(dependencies, objectAtIndex, i);
    if (dependency->isFinished == false) {
      return false;
    }
  }
 
  return true;
}

removeDepdenency()

static void removeDepdenency ( Operation *  self, Operation *  dependency  )

static

Definition at line 166 of file Operation.c.

                                                                     {
 
  assert(dependency);
 
  $(self->locals.dependencies, removeObject, dependency);
}

start()

static void start ( Operation *  self )

static

Definition at line 177 of file Operation.c.

                                   {
 
  if (self->isFinished || self->isExecuting) {
    return;
  }
 
  if (self->isCancelled == false) {
    self->isExecuting = true;
    self->function(self);
    self->isExecuting = false;
  }
 
  self->isFinished = true;
 
  synchronized(self->locals.condition, {
    $(self->locals.condition, broadcast);
  });
}

waitUntilFinished()

static void waitUntilFinished ( const Operation *  self )

static

Definition at line 200 of file Operation.c.

                                                     {
 
  synchronized(self->locals.condition, {
    while (self->isFinished == false) {
      $(self->locals.condition, wait);
    }
  });
}