text: /**************************************************************************
   *
   * Copyright 2020 Lag Free Games, LLC
   * All Rights Reserved.
   *
   * Permission is hereby granted, free of charge, to any person obtaining a
   * copy of this software and associated documentation files (the
   * "Software"), to deal in the Software without restriction, including
   * without limitation the rights to use, copy, modify, merge, publish,
   * distribute, sub license, and/or sell copies of the Software, and to
   * permit persons to whom the Software is furnished to do so, subject to
   * the following conditions:
   *
   * The above copyright notice and this permission notice (including the
   * next paragraph) shall be included in all copies or substantial portions
   * of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
   * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
   * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
   * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
   * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
   * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
   * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
   *
   **************************************************************************/
  
  #ifndef RWLOCK_H
  #define RWLOCK_H
  
  #ifdef _WIN32
  #include <windows.h>
  #else
  #include <pthread.h>
  #endif
  
  #ifdef __cplusplus
  extern "C" {
  #endif
  
  struct u_rwlock
  {
  #ifdef _WIN32
     SRWLOCK rwlock;
  #else
     pthread_rwlock_t rwlock;
  #endif
  };
  
  static inline int u_rwlock_init(struct u_rwlock *rwlock)
  {
  #ifdef _WIN32
     InitializeSRWLock(&rwlock->rwlock);
     return 0;
  #else
     return pthread_rwlock_init(&rwlock->rwlock, NULL);
  #endif
  }
  
  static inline int u_rwlock_destroy(struct u_rwlock *rwlock)
  {
  #ifdef _WIN32
     return 0;
  #else
     return pthread_rwlock_destroy(&rwlock->rwlock);
  #endif
  }
  
  static inline int u_rwlock_rdlock(struct u_rwlock *rwlock)
  {
  #ifdef _WIN32
     AcquireSRWLockShared(&rwlock->rwlock);
     return 0;
  #else
     return pthread_rwlock_rdlock(&rwlock->rwlock);
  #endif
  }
  
  static inline int u_rwlock_rdunlock(struct u_rwlock *rwlock)
  {
  #ifdef _WIN32
     ReleaseSRWLockShared(&rwlock->rwlock);
     return 0;
  #else
     return pthread_rwlock_unlock(&rwlock->rwlock);
  #endif
  }
  
  static inline int u_rwlock_wrlock(struct u_rwlock *rwlock)
  {
  #ifdef _WIN32
     AcquireSRWLockExclusive(&rwlock->rwlock);
     return 0;
  #else
     return pthread_rwlock_wrlock(&rwlock->rwlock);
  #endif
  }
  
  static inline int u_rwlock_wrunlock(struct u_rwlock *rwlock)
  {
  #ifdef _WIN32
     ReleaseSRWLockExclusive(&rwlock->rwlock);
     return 0;
  #else
     return pthread_rwlock_unlock(&rwlock->rwlock);
  #endif
  }
  
  #ifdef __cplusplus
  }
  #endif
  
  #endif
  