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Annotation of embedaddon/strongswan/src/libstrongswan/threading/thread_value.c, revision 1.1.1.1

1.1       misho       1: /*
                      2:  * Copyright (C) 2009-2012 Tobias Brunner
                      3:  * HSR Hochschule fuer Technik Rapperswil
                      4:  *
                      5:  * This program is free software; you can redistribute it and/or modify it
                      6:  * under the terms of the GNU General Public License as published by the
                      7:  * Free Software Foundation; either version 2 of the License, or (at your
                      8:  * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
                      9:  *
                     10:  * This program is distributed in the hope that it will be useful, but
                     11:  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
                     12:  * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
                     13:  * for more details.
                     14:  */
                     15: 
                     16: #define _GNU_SOURCE
                     17: #include <pthread.h>
                     18: 
                     19: #include <library.h>
                     20: 
                     21: #include "thread_value.h"
                     22: 
                     23: typedef struct private_thread_value_t private_thread_value_t;
                     24: 
                     25: struct private_thread_value_t {
                     26:        /**
                     27:         * Public interface.
                     28:         */
                     29:        thread_value_t public;
                     30: 
                     31:        /**
                     32:         * Key to access thread-specific values.
                     33:         */
                     34:        pthread_key_t key;
                     35: 
                     36:        /**
                     37:         * Destructor to cleanup the value of the thread destroying this object
                     38:         */
                     39:        thread_cleanup_t destructor;
                     40: 
                     41: };
                     42: 
                     43: METHOD(thread_value_t, set, void,
                     44:        private_thread_value_t *this, void *val)
                     45: {
                     46:        pthread_setspecific(this->key, val);
                     47: }
                     48: 
                     49: METHOD(thread_value_t, get, void*,
                     50:        private_thread_value_t *this)
                     51: {
                     52:        return pthread_getspecific(this->key);
                     53: }
                     54: 
                     55: METHOD(thread_value_t, destroy, void,
                     56:        private_thread_value_t *this)
                     57: {
                     58:        void *val;
                     59: 
                     60:        /* the destructor is not called automatically for the thread calling
                     61:         * pthread_key_delete() */
                     62:        if (this->destructor)
                     63:        {
                     64:                val = pthread_getspecific(this->key);
                     65:                if (val)
                     66:                {
                     67:                        this->destructor(val);
                     68:                }
                     69:        }
                     70:        pthread_key_delete(this->key);
                     71:        free(this);
                     72: }
                     73: 
                     74: /**
                     75:  * Described in header.
                     76:  */
                     77: thread_value_t *thread_value_create(thread_cleanup_t destructor)
                     78: {
                     79:        private_thread_value_t *this;
                     80: 
                     81:        INIT(this,
                     82:                .public = {
                     83:                        .set = _set,
                     84:                        .get = _get,
                     85:                        .destroy = _destroy,
                     86:                },
                     87:                .destructor = destructor,
                     88:        );
                     89: 
                     90:        pthread_key_create(&this->key, destructor);
                     91:        return &this->public;
                     92: }
                     93: