From 97f17497d162afdb82c8704bf097f0fee3724b2e Mon Sep 17 00:00:00 2001
From: "C.J. Collier" <cjcollier@linuxfoundation.org>
Date: Tue, 14 Jun 2016 07:50:17 -0700
Subject: Imported Upstream version 16.04

Change-Id: I77eadcd8538a9122e4773cbe55b24033dc451757
Signed-off-by: C.J. Collier <cjcollier@linuxfoundation.org>
---
 lib/librte_acl/tb_mem.c | 108 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 108 insertions(+)
 create mode 100644 lib/librte_acl/tb_mem.c

(limited to 'lib/librte_acl/tb_mem.c')

diff --git a/lib/librte_acl/tb_mem.c b/lib/librte_acl/tb_mem.c
new file mode 100644
index 00000000..157e6080
--- /dev/null
+++ b/lib/librte_acl/tb_mem.c
@@ -0,0 +1,108 @@
+/*-
+ *   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.
+ */
+
+#include "tb_mem.h"
+
+/*
+ *  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 *
+tb_pool(struct tb_mem_pool *pool, size_t sz)
+{
+	struct tb_mem_block *block;
+	uint8_t *ptr;
+	size_t size;
+
+	size = sz + pool->alignment - 1;
+	block = calloc(1, size + sizeof(*pool->block));
+	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;
+	}
+
+	block->pool = pool;
+
+	block->next = pool->block;
+	pool->block = block;
+
+	pool->alloc += size;
+
+	ptr = (uint8_t *)(block + 1);
+	block->mem = RTE_PTR_ALIGN_CEIL(ptr, pool->alignment);
+	block->size = size - (block->mem - ptr);
+
+	return block;
+}
+
+void *
+tb_alloc(struct tb_mem_pool *pool, size_t size)
+{
+	struct tb_mem_block *block;
+	void *ptr;
+	size_t new_sz;
+
+	size = RTE_ALIGN_CEIL(size, pool->alignment);
+
+	block = pool->block;
+	if (block == NULL || block->size < size) {
+		new_sz = (size > pool->min_alloc) ? size : pool->min_alloc;
+		block = tb_pool(pool, new_sz);
+	}
+	ptr = block->mem;
+	block->size -= size;
+	block->mem += size;
+	return ptr;
+}
+
+void
+tb_free_pool(struct tb_mem_pool *pool)
+{
+	struct tb_mem_block *next, *block;
+
+	for (block = pool->block; block != NULL; block = next) {
+		next = block->next;
+		free(block);
+	}
+	pool->block = NULL;
+	pool->alloc = 0;
+}
-- 
cgit 1.2.3-korg