327 lines
12 KiB
C
327 lines
12 KiB
C
/*-
|
|
* 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.
|
|
*
|
|
*/
|
|
|
|
#ifndef _RTE_MALLOC_H_
|
|
#define _RTE_MALLOC_H_
|
|
|
|
/**
|
|
* @file
|
|
* RTE Malloc. This library provides methods for dynamically allocating memory
|
|
* from hugepages.
|
|
*/
|
|
|
|
#include <stddef.h>
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/**
|
|
* Structure to hold heap statistics obtained from rte_malloc_get_socket_stats function.
|
|
*/
|
|
struct rte_malloc_socket_stats {
|
|
size_t heap_totalsz_bytes; /**< Total bytes on heap */
|
|
size_t heap_freesz_bytes; /**< Total free bytes on heap */
|
|
size_t greatest_free_size; /**< Size in bytes of largest free block */
|
|
unsigned free_count; /**< Number of free elements on heap */
|
|
unsigned alloc_count; /**< Number of allocated elements on heap */
|
|
size_t heap_allocsz_bytes; /**< Total allocated bytes on heap */
|
|
};
|
|
|
|
/**
|
|
* This function allocates memory from the huge-page area of memory. The memory
|
|
* is not cleared. In NUMA systems, the memory allocated resides on the same
|
|
* NUMA socket as the core that calls this function.
|
|
*
|
|
* @param type
|
|
* A string identifying the type of allocated objects (useful for debug
|
|
* purposes, such as identifying the cause of a memory leak). Can be NULL.
|
|
* @param size
|
|
* Size (in bytes) to be allocated.
|
|
* @param align
|
|
* If 0, the return is a pointer that is suitably aligned for any kind of
|
|
* variable (in the same manner as malloc()).
|
|
* Otherwise, the return is a pointer that is a multiple of *align*. In
|
|
* this case, it must be a power of two. (Minimum alignment is the
|
|
* cacheline size, i.e. 64-bytes)
|
|
* @return
|
|
* - NULL on error. Not enough memory, or invalid arguments (size is 0,
|
|
* align is not a power of two).
|
|
* - Otherwise, the pointer to the allocated object.
|
|
*/
|
|
void *
|
|
rte_malloc(const char *type, size_t size, unsigned align);
|
|
|
|
/**
|
|
* Allocate zero'ed memory from the heap.
|
|
*
|
|
* Equivalent to rte_malloc() except that the memory zone is
|
|
* initialised with zeros. In NUMA systems, the memory allocated resides on the
|
|
* same NUMA socket as the core that calls this function.
|
|
*
|
|
* @param type
|
|
* A string identifying the type of allocated objects (useful for debug
|
|
* purposes, such as identifying the cause of a memory leak). Can be NULL.
|
|
* @param size
|
|
* Size (in bytes) to be allocated.
|
|
* @param align
|
|
* If 0, the return is a pointer that is suitably aligned for any kind of
|
|
* variable (in the same manner as malloc()).
|
|
* Otherwise, the return is a pointer that is a multiple of *align*. In
|
|
* this case, it must obviously be a power of two. (Minimum alignment is the
|
|
* cacheline size, i.e. 64-bytes)
|
|
* @return
|
|
* - NULL on error. Not enough memory, or invalid arguments (size is 0,
|
|
* align is not a power of two).
|
|
* - Otherwise, the pointer to the allocated object.
|
|
*/
|
|
void *
|
|
rte_zmalloc(const char *type, size_t size, unsigned align);
|
|
|
|
/**
|
|
* Replacement function for calloc(), using huge-page memory. Memory area is
|
|
* initialised with zeros. In NUMA systems, the memory allocated resides on the
|
|
* same NUMA socket as the core that calls this function.
|
|
*
|
|
* @param type
|
|
* A string identifying the type of allocated objects (useful for debug
|
|
* purposes, such as identifying the cause of a memory leak). Can be NULL.
|
|
* @param num
|
|
* Number of elements to be allocated.
|
|
* @param size
|
|
* Size (in bytes) of a single element.
|
|
* @param align
|
|
* If 0, the return is a pointer that is suitably aligned for any kind of
|
|
* variable (in the same manner as malloc()).
|
|
* Otherwise, the return is a pointer that is a multiple of *align*. In
|
|
* this case, it must obviously be a power of two. (Minimum alignment is the
|
|
* cacheline size, i.e. 64-bytes)
|
|
* @return
|
|
* - NULL on error. Not enough memory, or invalid arguments (size is 0,
|
|
* align is not a power of two).
|
|
* - Otherwise, the pointer to the allocated object.
|
|
*/
|
|
void *
|
|
rte_calloc(const char *type, size_t num, size_t size, unsigned align);
|
|
|
|
/**
|
|
* Replacement function for realloc(), using huge-page memory. Reserved area
|
|
* memory is resized, preserving contents. In NUMA systems, the new area
|
|
* resides on the same NUMA socket as the old area.
|
|
*
|
|
* @param ptr
|
|
* Pointer to already allocated memory
|
|
* @param size
|
|
* Size (in bytes) of new area. If this is 0, memory is freed.
|
|
* @param align
|
|
* If 0, the return is a pointer that is suitably aligned for any kind of
|
|
* variable (in the same manner as malloc()).
|
|
* Otherwise, the return is a pointer that is a multiple of *align*. In
|
|
* this case, it must obviously be a power of two. (Minimum alignment is the
|
|
* cacheline size, i.e. 64-bytes)
|
|
* @return
|
|
* - NULL on error. Not enough memory, or invalid arguments (size is 0,
|
|
* align is not a power of two).
|
|
* - Otherwise, the pointer to the reallocated memory.
|
|
*/
|
|
void *
|
|
rte_realloc(void *ptr, size_t size, unsigned align);
|
|
|
|
/**
|
|
* This function allocates memory from the huge-page area of memory. The memory
|
|
* is not cleared.
|
|
*
|
|
* @param type
|
|
* A string identifying the type of allocated objects (useful for debug
|
|
* purposes, such as identifying the cause of a memory leak). Can be NULL.
|
|
* @param size
|
|
* Size (in bytes) to be allocated.
|
|
* @param align
|
|
* If 0, the return is a pointer that is suitably aligned for any kind of
|
|
* variable (in the same manner as malloc()).
|
|
* Otherwise, the return is a pointer that is a multiple of *align*. In
|
|
* this case, it must be a power of two. (Minimum alignment is the
|
|
* cacheline size, i.e. 64-bytes)
|
|
* @param socket
|
|
* NUMA socket to allocate memory on. If SOCKET_ID_ANY is used, this function
|
|
* will behave the same as rte_malloc().
|
|
* @return
|
|
* - NULL on error. Not enough memory, or invalid arguments (size is 0,
|
|
* align is not a power of two).
|
|
* - Otherwise, the pointer to the allocated object.
|
|
*/
|
|
void *
|
|
rte_malloc_socket(const char *type, size_t size, unsigned align, int socket);
|
|
|
|
/**
|
|
* Allocate zero'ed memory from the heap.
|
|
*
|
|
* Equivalent to rte_malloc() except that the memory zone is
|
|
* initialised with zeros.
|
|
*
|
|
* @param type
|
|
* A string identifying the type of allocated objects (useful for debug
|
|
* purposes, such as identifying the cause of a memory leak). Can be NULL.
|
|
* @param size
|
|
* Size (in bytes) to be allocated.
|
|
* @param align
|
|
* If 0, the return is a pointer that is suitably aligned for any kind of
|
|
* variable (in the same manner as malloc()).
|
|
* Otherwise, the return is a pointer that is a multiple of *align*. In
|
|
* this case, it must obviously be a power of two. (Minimum alignment is the
|
|
* cacheline size, i.e. 64-bytes)
|
|
* @param socket
|
|
* NUMA socket to allocate memory on. If SOCKET_ID_ANY is used, this function
|
|
* will behave the same as rte_zmalloc().
|
|
* @return
|
|
* - NULL on error. Not enough memory, or invalid arguments (size is 0,
|
|
* align is not a power of two).
|
|
* - Otherwise, the pointer to the allocated object.
|
|
*/
|
|
void *
|
|
rte_zmalloc_socket(const char *type, size_t size, unsigned align, int socket);
|
|
|
|
/**
|
|
* Replacement function for calloc(), using huge-page memory. Memory area is
|
|
* initialised with zeros.
|
|
*
|
|
* @param type
|
|
* A string identifying the type of allocated objects (useful for debug
|
|
* purposes, such as identifying the cause of a memory leak). Can be NULL.
|
|
* @param num
|
|
* Number of elements to be allocated.
|
|
* @param size
|
|
* Size (in bytes) of a single element.
|
|
* @param align
|
|
* If 0, the return is a pointer that is suitably aligned for any kind of
|
|
* variable (in the same manner as malloc()).
|
|
* Otherwise, the return is a pointer that is a multiple of *align*. In
|
|
* this case, it must obviously be a power of two. (Minimum alignment is the
|
|
* cacheline size, i.e. 64-bytes)
|
|
* @param socket
|
|
* NUMA socket to allocate memory on. If SOCKET_ID_ANY is used, this function
|
|
* will behave the same as rte_calloc().
|
|
* @return
|
|
* - NULL on error. Not enough memory, or invalid arguments (size is 0,
|
|
* align is not a power of two).
|
|
* - Otherwise, the pointer to the allocated object.
|
|
*/
|
|
void *
|
|
rte_calloc_socket(const char *type, size_t num, size_t size, unsigned align, int socket);
|
|
|
|
/**
|
|
* Frees the memory space pointed to by the provided pointer.
|
|
*
|
|
* This pointer must have been returned by a previous call to
|
|
* rte_malloc(), rte_zmalloc(), rte_calloc() or rte_realloc(). The behaviour of
|
|
* rte_free() is undefined if the pointer does not match this requirement.
|
|
*
|
|
* If the pointer is NULL, the function does nothing.
|
|
*
|
|
* @param ptr
|
|
* The pointer to memory to be freed.
|
|
*/
|
|
void
|
|
rte_free(void *ptr);
|
|
|
|
/**
|
|
* If malloc debug is enabled, check a memory block for header
|
|
* and trailer markers to indicate that all is well with the block.
|
|
* If size is non-null, also return the size of the block.
|
|
*
|
|
* @param ptr
|
|
* pointer to the start of a data block, must have been returned
|
|
* by a previous call to rte_malloc(), rte_zmalloc(), rte_calloc()
|
|
* or rte_realloc()
|
|
* @param size
|
|
* if non-null, and memory block pointer is valid, returns the size
|
|
* of the memory block
|
|
* @return
|
|
* -1 on error, invalid pointer passed or header and trailer markers
|
|
* are missing or corrupted
|
|
* 0 on success
|
|
*/
|
|
int
|
|
rte_malloc_validate(void *ptr, size_t *size);
|
|
|
|
/**
|
|
* Get heap statistics for the specified heap.
|
|
*
|
|
* @param socket
|
|
* An unsigned integer specifying the socket to get heap statistics for
|
|
* @param socket_stats
|
|
* A structure which provides memory to store statistics
|
|
* @return
|
|
* Null on error
|
|
* Pointer to structure storing statistics on success
|
|
*/
|
|
int
|
|
rte_malloc_get_socket_stats(int socket,
|
|
struct rte_malloc_socket_stats *socket_stats);
|
|
|
|
/**
|
|
* Dump statistics.
|
|
*
|
|
* Dump for the specified type to the console. If the type argument is
|
|
* NULL, all memory types will be dumped.
|
|
*
|
|
* @param type
|
|
* A string identifying the type of objects to dump, or NULL
|
|
* to dump all objects.
|
|
*/
|
|
void
|
|
rte_malloc_dump_stats(const char *type);
|
|
|
|
/**
|
|
* Set the maximum amount of allocated memory for this type.
|
|
*
|
|
* This is not yet implemented
|
|
*
|
|
* @param type
|
|
* A string identifying the type of allocated objects.
|
|
* @param max
|
|
* The maximum amount of allocated bytes for this type.
|
|
* @return
|
|
* - 0: Success.
|
|
* - (-1): Error.
|
|
*/
|
|
int
|
|
rte_malloc_set_limit(const char *type, size_t max);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* _RTE_MALLOC_H_ */
|