acrn-hypervisor/hypervisor/include/lib/mem_mgt.h
Junjie Mao c01a236efb treewide: fix declarations of functions with empty parameter lists
According to C99:

    The empty list in a function declarator that is not part of a definition of
    that function specifies that no information about the number or types of the
    parameters is supplied.

This means gcc is happy with the following code, which is undesirable.

    void foo();    /* declaration with an empty parameter list */

    void bar() {
        foo();     /* OK */
        foo(1);    /* OK */
        foo(1, 2); /* OK */
    }

This patch fixes declarations of functions with empty parameter lists by adding
an unnamed parameter of type void, which is the standard way to specify that a
function has no parameters. The following coccinelle script is used.

    @@
    type T;
    identifier f;
    @@

    -T f();
    +T f(void);

New compilation errors are fixed accordingly.

Signed-off-by: Junjie Mao <junjie.mao@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
2018-05-15 17:25:23 +08:00

56 lines
2.4 KiB
C

/*
* Copyright (C) 2018 Intel Corporation. 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 __MEM_MGT_H__
#define __MEM_MGT_H__
/* Macros */
#define BITMAP_WORD_SIZE 32
struct mem_pool {
void *start_addr; /* Start Address of Memory Pool */
spinlock_t spinlock; /* To protect Memory Allocation */
uint32_t size; /* Size of Memory Pool in Bytes */
uint32_t buff_size; /* Size of one Buffer in Bytes */
uint32_t total_buffs; /* Total Buffers in Memory Pool */
uint32_t bmp_size; /* Size of Bitmap Array */
uint32_t *bitmap; /* Pointer to allocation bitmap */
uint32_t *contiguity_bitmap; /* Pointer to contiguity bitmap */
};
/* APIs exposing memory allocation/deallocation abstractions */
void *malloc(unsigned int num_bytes);
void *calloc(unsigned int num_elements, unsigned int element_size);
void *alloc_page(void);
void *alloc_pages(unsigned int page_num);
void free(void *ptr);
#endif /* MEM_MGT_H_ */