newlib/libc/sys/tirtos/lock.c

   1 /*
   2  * Copyright (c) 2014, Texas Instruments Incorporated
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  *
   9  * *  Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  *
  12  * *  Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * *  Neither the name of Texas Instruments Incorporated nor the names of
  17  *    its contributors may be used to endorse or promote products derived
  18  *    from this software without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  21  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  22  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  23  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
  24  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  25  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  26  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
  27  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  28  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  29  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
  30  * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  31  */
  32 /*
  33  *  ======== lock.c ========
  34  *  TIRTOS provides an implementation for the sys/lock APIs if re-entrancy
  35  *  support is enabled. If re-entrancy support is disabled or an app is built
  36  *  without TIRTOS but using the libraries built for TIRTOS, these empty
  37  *  stubs are required to succesfully link the app.
  38  */
  39
  40 #include <sys/lock.h>
  41
  42 /* Empty stubs for sys/lock APIs */
  43
  44 void __libc_lock_init(_LOCK_T *lock)
  45 {
  46     return;
  47 }
  48
  49 void __libc_lock_init_recursive(_LOCK_RECURSIVE_T *lock)
  50 {
  51     return;
  52 }
  53
  54 void __libc_lock_close(_LOCK_T *lock)
  55 {
  56     return;
  57 }
  58
  59 void __libc_lock_close_recursive(_LOCK_RECURSIVE_T *lock)
  60 {
  61     return;
  62 }
  63
  64 void __libc_lock_acquire(_LOCK_T *lock)
  65 {
  66     return;
  67 }
  68
  69 void __libc_lock_acquire_recursive(_LOCK_RECURSIVE_T *lock)
  70 {
  71     return;
  72 }
  73
  74 void __libc_lock_release(_LOCK_T *lock)
  75 {
  76     return;
  77 }
  78
  79 void __libc_lock_release_recursive(_LOCK_RECURSIVE_T *lock)\
  80 {
  81     return;
  82 }
  83
  84 int __libc_lock_try_acquire(_LOCK_T *lock)
  85 {
  86     return -1;
  87 }
  88
  89 int __libc_lock_try_acquire_recursive(_LOCK_RECURSIVE_T *lock)
  90 {
  91     return -1;
  92 }