mpiP-tslist.h

/* -*- C -*-

   mpiP MPI Profiler ( http://llnl.github.io/mpiP )

   Please see COPYRIGHT AND LICENSE information at the end of this file.

   -----

   thread_safe_list.h -- Implementation of the thread-safe list based on atomics
   NOTE: only one thread is allowed to extract elements, but many can contribute.
   This fits perfectly fine with the purpose of holding TLS pointers in mpiP.

 */

#ifndef THREAD_SAFE_LIST_H
#define THREAD_SAFE_LIST_H

#include "arch/arch.h"

typedef struct tslist_elem_s {
  void *ptr;
  struct tslist_elem_s *next;
} mpiP_tslist_elem_t;

typedef struct tslist_s {
  mpiP_tslist_elem_t *head, *tail;
} mpiP_tslist_t;

mpiP_tslist_t *mpiPi_tslist_create();
void mpiPi_tslist_release(mpiP_tslist_t *list);
void mpiPi_tslist_append(mpiP_tslist_t *list, void *data_ptr);
void *mpiPi_tslist_dequeue(mpiP_tslist_t *list);
mpiP_tslist_elem_t *mpiPi_tslist_first(mpiP_tslist_t *list);
mpiP_tslist_elem_t *mpiPi_tslist_next(mpiP_tslist_elem_t *current);

#endif // THREAD_SAFE_LIST_H

/*

<license>

Derived from
https://github.com/artpol84/poc/blob/master/arch/concurrency/thread-safe_list

Copyright (c) 2019      Mellanox Technologies Ltd.
Written by Artem Polyakov
All rights reserved.

This file is part of mpiP.  For details, see http://llnl.github.io/mpiP.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:

* Redistributions of source code must retain the above copyright
notice, this list of conditions and the disclaimer below.

* Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the disclaimer (as noted below) in
the documentation and/or other materials provided with the
distribution.

* Neither the name of the UC/LLNL nor the names of its contributors
may be used to endorse or promote products derived from this software
without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OF
THE UNIVERSITY OF CALIFORNIA, THE U.S. DEPARTMENT OF ENERGY OR
CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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Additional BSD Notice

1. This notice is required to be provided under our contract with the
U.S. Department of Energy (DOE).  This work was produced at the
University of California, Lawrence Livermore National Laboratory under
Contract No. W-7405-ENG-48 with the DOE.

2. Neither the United States Government nor the University of
California nor any of their employees, makes any warranty, express or
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3.  Also, reference herein to any specific commercial products,
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</license>

*/