kvargs: use SPDX tags

[dpdk.git] / lib / librte_acl / tb_mem.c

diff --git a/lib/librte_acl/tb_mem.c b/lib/librte_acl/tb_mem.c
index b303d15..f14d7b4 100644 (file)
--- a/lib/librte_acl/tb_mem.c
+++ b/lib/librte_acl/tb_mem.c
@@ -1,42 +1,18 @@
-/*-
- *   BSD LICENSE
- *
- *   Copyright(c) 2010-2014 Intel Corporation. All rights reserved.
- *   All rights reserved.
- *
- *   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 following disclaimer.
- *     * 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.
- *     * Neither the name of Intel Corporation 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 COPYRIGHT
- *   OWNER 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.
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2010-2014 Intel Corporation
  */
 
 #include "tb_mem.h"
 
 /*
- *  Memory managment routines for temporary memory.
+ *  Memory management routines for temporary memory.
  *  That memory is used only during build phase and is released after
  *  build is finished.
+ *  Note, that tb_pool/tb_alloc() are not supposed to return NULL.
+ *  Instead, in the case of failure to allocate memory,
+ *  it would do siglongjmp(pool->fail).
+ *  It is responsibility of the caller to save the proper context/environment,
+ *  in the pool->fail before calling tb_alloc() for the given pool first time.
  */
 
 static struct tb_mem_block *
@@ -51,6 +27,7 @@ tb_pool(struct tb_mem_pool *pool, size_t sz)
        if (block == NULL) {
                RTE_LOG(ERR, MALLOC, "%s(%zu)\n failed, currently allocated "
                        "by pool: %zu bytes\n", __func__, sz, pool->alloc);
+               siglongjmp(pool->fail, -ENOMEM);
                return NULL;
        }
 
@@ -81,8 +58,6 @@ tb_alloc(struct tb_mem_pool *pool, size_t size)
        if (block == NULL || block->size < size) {
                new_sz = (size > pool->min_alloc) ? size : pool->min_alloc;
                block = tb_pool(pool, new_sz);
-               if (block == NULL)
-                       return NULL;
        }
        ptr = block->mem;
        block->size -= size;