Lock.c File Reference

#include <assert.h>
#include <errno.h>
#include <stdlib.h>
#include <pthread.h>
#include "Lock.h"

Go to the source code of this file.

Macros
#define	_Class   _Lock

Functions
Class *	_Lock (void)
static Object *	copy (const Object *self)
static void	dealloc (Object *self)
static Lock *	init (Lock *self)
static void	initialize (Class *clazz)
static void	lock (Lock *self)
static _Bool	tryLock (Lock *self)
static void	unlock (Lock *self)

Macro Definition Documentation

_Class

#define _Class   _Lock

Definition at line 32 of file Lock.c.

Function Documentation

_Lock()

Class * _Lock

(

void

)

Definition at line 129 of file Lock.c.

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

copy()

static Object * copy ( const Object *  self )

static

See also

Object::copy(const Object *)

Definition at line 39 of file Lock.c.

                                        {
    return NULL;
}

dealloc()

static void dealloc ( Object *  self )

static

See also

Object::dealloc(Object *)

Definition at line 46 of file Lock.c.

                                  {
 
    Lock *this = (Lock *) self;
 
    pthread_mutex_destroy(this->lock);
    free(this->lock);
 
    super(Object, self, dealloc);
}

init()

static Lock * init ( Lock *  self )

static

Definition at line 62 of file Lock.c.

                              {
 
    self = (Lock *) super(Object, self, init);
    if (self) {
 
        self->lock = calloc(1, sizeof(pthread_mutex_t));
        assert(self->lock);
 
        const int err = pthread_mutex_init(self->lock, NULL);
        assert(err == 0);
    }
 
    return self;
}

initialize()

static void initialize ( Class *  clazz )

static

See also

Class::initialize(Class *)

Definition at line 114 of file Lock.c.

                                     {
 
    ((ObjectInterface *) clazz->interface)->copy = copy;
    ((ObjectInterface *) clazz->interface)->dealloc = dealloc;
 
    ((LockInterface *) clazz->interface)->init = init;
    ((LockInterface *) clazz->interface)->lock = lock;
    ((LockInterface *) clazz->interface)->tryLock = tryLock;
    ((LockInterface *) clazz->interface)->unlock = unlock;
}

lock()

static void lock ( Lock *  self )

static

Definition at line 81 of file Lock.c.

                             {
 
    int err = pthread_mutex_lock(self->lock);
    assert(err == 0);
}

tryLock()

static _Bool tryLock ( Lock *  self )

static

Definition at line 91 of file Lock.c.

                                 {
 
    int err = pthread_mutex_trylock(self->lock);
    assert(err == 0 || err == EBUSY);
 
    return err == 0;
}

unlock()

static void unlock ( Lock *  self )

static

Definition at line 103 of file Lock.c.

                               {
 
    int err = pthread_mutex_unlock(self->lock);
    assert(err == 0);
}