Operation.c File Reference

#include <assert.h>
#include "Operation.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 29 of file Operation.c.

Function Documentation

_Operation()

Class * _Operation

(

void

)

Definition at line 233 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 60 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 74 of file Operation.c.

                                    {
 
    if (self->isCancelled == false) {
        if (self->isFinished == false) {
            if (self->isExecuting == false) {
                self->isCancelled = true;
            }
        }
    }
}

copy()

static Object * copy ( const Object *  self )

static

See also

Object::copy(const Object *)

Definition at line 36 of file Operation.c.

                                        {
 
    return NULL;
}

dealloc()

static void dealloc ( Object *  self )

static

See also

Object::dealloc(Object *)

Definition at line 44 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 89 of file Operation.c.

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

init()

static Operation * init ( Operation *  self )

static

Definition at line 100 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(MutableArray), init);
        assert(self->locals.dependencies);
    }
 
    return self;
}

initialize()

static void initialize ( Class *  clazz )

static

See also

Class::initialize(Class *)

Definition at line 213 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 119 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 134 of file Operation.c.

                                            {
 
    if (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 160 of file Operation.c.

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

start()

static void start ( Operation *  self )

static

Definition at line 171 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);
    });
 
    OperationQueue *currentQueue = $$(OperationQueue, currentQueue);
    if (currentQueue) {
        $(currentQueue, removeOperation, self);
    }
}

waitUntilFinished()

static void waitUntilFinished ( const Operation *  self )

static

Definition at line 199 of file Operation.c.

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