remove mtapi spinlock implementation

mtapi_c/src/embb_mtapi_spinlock_t.c

-/*
- * Copyright (c) 2014-2015, Siemens AG. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice,
- * this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- * this list of conditions and the following disclaimer in the documentation
- * and/or other materials provided with the distribution.
- *
- * 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 COPYRIGHT HOLDER OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <embb_mtapi_spinlock_t.h>
-
-void embb_mtapi_spinlock_initialize(embb_mtapi_spinlock_t * that) {
-  embb_atomic_store_int(that, 0);
-}
-
-void embb_mtapi_spinlock_finalize(embb_mtapi_spinlock_t * that) {
-  embb_atomic_store_int(that, 0);
-}
-
-embb_atomic_int embb_mtapi_spinlock_spins = { 0 };
-
-mtapi_boolean_t embb_mtapi_spinlock_acquire(embb_mtapi_spinlock_t * that) {
-  int expected = 0;
-  while (0 == embb_atomic_compare_and_swap_int(that, &expected, 1)) {
-    /* empty */
-    embb_atomic_fetch_and_add_int(&embb_mtapi_spinlock_spins, 1);
-    expected = 0;
-  }
-  return MTAPI_TRUE;
-}
-
-mtapi_boolean_t embb_mtapi_spinlock_acquire_with_spincount(
-  embb_mtapi_spinlock_t * that,
-  mtapi_uint_t max_spin_count) {
-  int expected = 0;
-  mtapi_uint_t spin_count = max_spin_count;
-  while (0 == embb_atomic_compare_and_swap_int(that, &expected, 1)) {
-    embb_atomic_fetch_and_add_int(&embb_mtapi_spinlock_spins, 1);
-    spin_count--;
-    if (0 == spin_count) {
-      return MTAPI_FALSE;
-    }
-    expected = 0;
-  }
-
-  return MTAPI_TRUE;
-}
-
-mtapi_boolean_t embb_mtapi_spinlock_release(embb_mtapi_spinlock_t * that) {
-  int expected = 1;
-  return embb_atomic_compare_and_swap_int(that, &expected, 0) ?
-    MTAPI_TRUE : MTAPI_FALSE;
-}

mtapi_c/src/embb_mtapi_spinlock_t.h

-/*
- * Copyright (c) 2014-2015, Siemens AG. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice,
- * this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- * this list of conditions and the following disclaimer in the documentation
- * and/or other materials provided with the distribution.
- *
- * 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 COPYRIGHT HOLDER OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- */
-
-#ifndef MTAPI_C_SRC_EMBB_MTAPI_SPINLOCK_T_H_
-#define MTAPI_C_SRC_EMBB_MTAPI_SPINLOCK_T_H_
-
-#include <embb/mtapi/c/mtapi.h>
-#include <embb/base/c/atomic.h>
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-
-/* ---- CLASS DECLARATION -------------------------------------------------- */
-
-typedef embb_atomic_int embb_mtapi_spinlock_t;
-
-void embb_mtapi_spinlock_initialize(embb_mtapi_spinlock_t * that);
-void embb_mtapi_spinlock_finalize(embb_mtapi_spinlock_t * that);
-mtapi_boolean_t embb_mtapi_spinlock_acquire(embb_mtapi_spinlock_t * that);
-mtapi_boolean_t embb_mtapi_spinlock_acquire_with_spincount(
-  embb_mtapi_spinlock_t * that,
-  mtapi_uint_t max_spin_count);
-mtapi_boolean_t embb_mtapi_spinlock_release(embb_mtapi_spinlock_t * that);
-
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif // MTAPI_C_SRC_EMBB_MTAPI_SPINLOCK_T_H_