source: roaraudio/libroar/libroar.c @ 4945:9c4f8c8d92a9

//libroar.c:

/*
 *      Copyright (C) Philipp 'ph3-der-loewe' Schafft - 2008-2011
 *
 *  This file is part of libroar a part of RoarAudio,
 *  a cross-platform sound system for both, home and professional use.
 *  See README for details.
 *
 *  This file is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License version 3
 *  as published by the Free Software Foundation.
 *
 *  libroar 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 General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this software; see the file COPYING.  If not, write to
 *  the Free Software Foundation, 51 Franklin Street, Fifth Floor,
 *  Boston, MA 02110-1301, USA.
 *
 *  NOTE for everyone want's to change something and send patches:
 *  read README and HACKING! There a addition information on
 *  the license of this document you need to read before you send
 *  any patches.
 *
 *  NOTE for uses of non-GPL (LGPL,...) software using libesd, libartsc
 *  or libpulse*:
 *  The libs libroaresd, libroararts and libroarpulse link this lib
 *  and are therefore GPL. Because of this it may be illigal to use
 *  them with any software that uses libesd, libartsc or libpulse*.
 */

/* ckport options:
 * ckport: ignore-symbol: sleep of target win32   -- checked by configure
 */

#include "libroar.h"

#ifndef roar_mm_mlock
int roar_mm_mlock(const void *addr, size_t len) {
#if defined(ROAR_TARGET_WIN32)
 /* GlobalLock() generates errors. Maybe we do not use correctly.
  * We just ignore that at the moment and throw NOSYS.
  *
  * return GlobalLock(addr) == addr ? 0 : -1;
  */
 roar_err_set(ROAR_ERROR_NOSYS);
 return -1;
#elif defined(ROAR_TARGET_MICROCONTROLLER)
 return 0;
#elif defined(_SC_PAGESIZE)
 long sz = sysconf(_SC_PAGESIZE);
 unsigned long int pos = (unsigned long int) addr;

 len += sz - (len % sz);

 pos -= pos % sz;

 return mlock((void*)pos, len);
#else
 roar_err_set(ROAR_ERROR_NOSYS);
 return -1;
#endif
}
#endif

#ifndef roar_mm_munlock
int roar_mm_munlock(const void *addr, size_t len) {
#if defined(ROAR_TARGET_WIN32)
 // TODO: find out what do do here. GlobalUnLock()? does such a function exist?
// return GlobalLock(addr) == addr ? 0 : -1;
 roar_err_set(ROAR_ERROR_NOSYS);
 return -1;
#elif defined(ROAR_TARGET_MICROCONTROLLER)
 return 0;
#elif defined(_SC_PAGESIZE)
 long sz = sysconf(_SC_PAGESIZE);
 unsigned long int pos = (unsigned long int) addr;

 len += sz - (len % sz);

 pos -= pos % sz;

 return munlock((void*)pos, len);
#else
 roar_err_set(ROAR_ERROR_NOSYS);
 return -1;
#endif
}
#endif

// for compatibility with old versions:
int _ROAR_MLOCK(const void *addr, size_t len) {
 roar_debug_warn_obsolete("_ROAR_MLOCK", "roar_mm_mlock", NULL);
 return roar_mm_mlock(addr, len);
}

void * roar_mm_memdup(const void * s, size_t len) {
 void * ret = roar_mm_malloc(len);

 if ( ret == NULL )
  return NULL;

 memcpy(ret, s, len);

 return ret;
}

int roar_usleep(uint_least32_t t) {
#ifdef ROAR_TARGET_WIN32
 Sleep(t/(uint_least32_t)1000);
 return 0;
#elif defined(ROAR_HAVE_NANOSLEEP)
 struct timespec tv;
 struct timespec left;

 if ( t > (uint_least32_t)1000000 ) {
  tv.tv_sec  = t/(uint_least32_t)1000000;
  t         -= tv.tv_sec*(uint_least32_t)1000000;
 } else {
  tv.tv_sec  = 0;
 }

 tv.tv_nsec = t*(uint_least32_t)1000;

 while (nanosleep(&tv, &left) == -1)
  memcpy(&tv, &left, sizeof(tv));
 return 0;
#elif defined(ROAR_HAVE_USLEEP)
 usleep(t);
 return 0;
#else
 ROAR_ERR("roar_usleep(t=%llu): can not sleep: not implemented", (long long unsigned int)t);
 roar_strap(ROAR_TRAP_GROUP_LIBROAR, "usleep.not-implemented");
 roar_err_set(ROAR_ERROR_NOSYS);
 return -1;
#endif
}

int roar_sleep(int t) {
 if ( t < 0 ) {
  roar_err_set(ROAR_ERROR_CAUSALITY);
  return -1;
 }

#ifdef ROAR_TARGET_WIN32
 Sleep(1000L*(long)t);
#else
 while (t)
  t = sleep(t);
#endif

 return 0;
}

//ll