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-rw-r--r--lib/librte_malloc/rte_malloc.c166
1 files changed, 166 insertions, 0 deletions
diff --git a/lib/librte_malloc/rte_malloc.c b/lib/librte_malloc/rte_malloc.c
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+++ b/lib/librte_malloc/rte_malloc.c
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+/*-
+ * BSD LICENSE
+ *
+ * Copyright(c) 2010-2012 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.
+ *
+ * version: DPDK.L.1.2.3-3
+ */
+
+#include <stdint.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <string.h>
+#include <sys/queue.h>
+
+#include <rte_memcpy.h>
+#include <rte_memory.h>
+#include <rte_memzone.h>
+#include <rte_tailq.h>
+#include <rte_eal.h>
+#include <rte_branch_prediction.h>
+#include <rte_debug.h>
+#include <rte_launch.h>
+#include <rte_per_lcore.h>
+#include <rte_lcore.h>
+#include <rte_common.h>
+#include <rte_spinlock.h>
+
+#include <rte_malloc.h>
+#include "malloc_elem.h"
+#include "malloc_heap.h"
+
+static struct malloc_heap malloc_heap[RTE_MAX_NUMA_NODES] = {
+ { .initialised = NOT_INITIALISED }
+};
+
+/* Free the memory space back to heap */
+void rte_free(void *addr)
+{
+ if (addr == NULL) return;
+ if (malloc_elem_free(malloc_elem_from_data(addr)) < 0)
+ rte_panic("Fatal error: Invalid memory\n");
+}
+
+/*
+ * Allocate memory on default heap.
+ */
+void *
+rte_malloc(const char *type, size_t size, unsigned align)
+{
+ unsigned malloc_socket = malloc_get_numa_socket();
+ /* return NULL if size is 0 or alignment is not power-of-2 */
+ if (size == 0 || !rte_is_power_of_2(align))
+ return NULL;
+ return malloc_heap_alloc(&malloc_heap[malloc_socket], type,
+ size, align == 0 ? 1 : align);
+}
+
+/*
+ * Allocate zero'd memory on default heap.
+ */
+void *
+rte_zmalloc(const char *type, size_t size, unsigned align)
+{
+ void *ptr = rte_malloc(type, size, align);
+
+ if (ptr != NULL)
+ memset(ptr, 0, size);
+ return ptr;
+}
+
+/*
+ * Allocate zero'd memory on default heap.
+ */
+void *
+rte_calloc(const char *type, size_t num, size_t size, unsigned align)
+{
+ return rte_zmalloc(type, num * size, align);
+}
+
+/*
+ * Resize allocated memory.
+ */
+void *
+rte_realloc(void *ptr, size_t size, unsigned align)
+{
+ if (ptr == NULL)
+ return rte_malloc(NULL, size, align);
+
+ struct malloc_elem *elem = malloc_elem_from_data(ptr);
+ if (elem == NULL)
+ rte_panic("Fatal error: memory corruption detected\n");
+
+ size = CACHE_LINE_ROUNDUP(size), align = CACHE_LINE_ROUNDUP(align);
+ /* check alignment matches first, and if ok, see if we can resize block */
+ if (RTE_ALIGN(ptr,align) == ptr &&
+ malloc_elem_resize(elem, size) == 0)
+ return ptr;
+
+ /* either alignment is off, or we have no room to expand,
+ * so move data. */
+ void *new_ptr = rte_malloc(NULL, size, align);
+ if (new_ptr == NULL)
+ return NULL;
+ const unsigned old_size = elem->size - MALLOC_ELEM_OVERHEAD;
+ rte_memcpy(new_ptr, ptr, old_size < size ? old_size : size);
+ rte_free(ptr);
+
+ return new_ptr;
+}
+
+int
+rte_malloc_validate(void *ptr, size_t *size)
+{
+ struct malloc_elem *elem = malloc_elem_from_data(ptr);
+ if (!malloc_elem_cookies_ok(elem))
+ return -1;
+ if (size != NULL)
+ *size = elem->size - elem->pad - MALLOC_ELEM_OVERHEAD;
+ return 0;
+}
+/*
+ * TODO: Print stats on memory type. If type is NULL, info on all types is printed
+ */
+void
+rte_malloc_dump_stats(__rte_unused const char *type)
+{
+ return;
+}
+
+/*
+ * TODO: Set limit to memory that can be allocated to memory type
+ */
+int
+rte_malloc_set_limit(__rte_unused const char *type,
+ __rte_unused size_t max)
+{
+ return 0;
+}
+