/*
* Copyright (C) 2013-2014 Intel Corporation.
- *
+ *
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Authors:
- * José Bollo <jose.bollo@open.eurogiciel.org>
- * Stéphane Desneux <stephane.desneux@open.eurogiciel.org>
- * Jean-Benoit Martin <jean-benoit.martin@open.eurogiciel.org>
+ * José Bollo <jose.bollo@open.eurogiciel.org>
+ * Stéphane Desneux <stephane.desneux@open.eurogiciel.org>
+ * Jean-Benoit Martin <jean-benoit.martin@open.eurogiciel.org>
*
*/
#define _GNU_SOURCE
#include "heap.h"
/* align to a size_t size */
-inline static size_t align(size_t size)
+static inline size_t align(size_t size)
{
- /* we assume that sizeof(size_t) is a power of 2 */
- assert( (sizeof(size_t) & (sizeof(size_t)-1)) == 0 );
- return (size + (sizeof(size_t)-1)) & ~(sizeof(size_t)-1);
+ /* we assume that sizeof(size_t) is a power of 2 */
+ assert((sizeof(size_t) & (sizeof(size_t)-1)) == 0);
+ return (size + (sizeof(size_t)-1)) & ~(sizeof(size_t)-1);
}
/* align to a page size */
-inline static size_t pagealign( size_t size)
+static inline size_t pagealign(size_t size)
{
- static size_t pagemask = 0;
- /* we assume that pagesize is a power of 2 */
- if (!pagemask) {
- pagemask = (size_t)sysconf(_SC_PAGE_SIZE) - 1;
- assert( pagemask );
- assert( (pagemask & (pagemask+1)) == 0 );
- }
- return (size + pagemask) & ~pagemask;
+ static size_t pagemask = 0;
+ /* we assume that pagesize is a power of 2 */
+ if (!pagemask) {
+ pagemask = (size_t)sysconf(_SC_PAGE_SIZE) - 1;
+ assert(pagemask);
+ assert((pagemask & (pagemask+1)) == 0);
+ }
+ return (size + pagemask) & ~pagemask;
}
-int heap_create( struct heap *heap, size_t capacity)
+int heap_create(struct heap *heap, size_t capacity)
{
- char *data;
-
- /* allocation of the heap */
- capacity = pagealign(capacity ? capacity : 1);
- data = mmap(NULL, capacity, PROT_READ|PROT_WRITE,
- MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
-
- /* success of the allocation? */
- if (data == MAP_FAILED)
- return -1;
-
- /* yes. initialisae the heap */
- heap->data = data;
- heap->capacity = capacity;
- heap->size = 0;
- return 0;
+ char *data;
+
+ /* allocation of the heap */
+ capacity = pagealign(capacity ? capacity : 1);
+ data = mmap(NULL, capacity, PROT_READ|PROT_WRITE,
+ MAP_PRIVATE|MAP_ANONYMOUS, -1, 0);
+
+ /* success of the allocation? */
+ if (data == MAP_FAILED)
+ return -1;
+
+ /* yes. initialisae the heap */
+ heap->data = data;
+ heap->capacity = capacity;
+ heap->size = 0;
+ return 0;
}
-int heap_destroy( struct heap *heap)
+int heap_destroy(struct heap *heap)
{
- return munmap( heap->data, heap->capacity);
+ return munmap(heap->data, heap->capacity);
}
-int heap_resize( struct heap *heap, size_t size)
+int heap_resize(struct heap *heap, size_t size)
{
- /* has heap enought data? */
- if (size > heap->capacity) {
-
- /* no. resizing of the heap. */
- /* compute the sizes and realloc */
- size_t capa = pagealign(size);
- char *data = mremap(heap->data, heap->capacity, capa, MREMAP_MAYMOVE);
-
- /* error if failure */
- if (data == MAP_FAILED)
- return -1;
-
- /* record new parameters. */
- heap->data = data;
- heap->capacity = capa;
- }
- heap->size = size;
-
- return 0;
+ /* has heap enought data? */
+ if (size > heap->capacity) {
+
+ /* no. resizing of the heap. */
+ /* compute the sizes and realloc */
+ size_t capa = pagealign(size);
+ char *data = mremap(heap->data, heap->capacity, capa, MREMAP_MAYMOVE);
+
+ /* error if failure */
+ if (data == MAP_FAILED)
+ return -1;
+
+ /* record new parameters. */
+ heap->data = data;
+ heap->capacity = capa;
+ }
+ heap->size = size;
+
+ return 0;
}
-size_t heap_alloc( struct heap *heap, size_t count)
+size_t heap_alloc(struct heap *heap, size_t count)
{
- size_t result = heap->size;
- if( heap_resize( heap, align( result + count)) != 0)
- result = HNULL;
- return result;
+ size_t result = heap->size;
+ if (heap_resize(heap, align(result + count)) != 0)
+ result = HNULL;
+ return result;
}
-size_t heap_strndup( struct heap *heap, const char *value, size_t length)
+size_t heap_strndup(struct heap *heap, const char *value, size_t length)
{
- size_t offset;
- char *string;
-
- offset = heap_alloc( heap, length+1);
- if (offset != HNULL) {
- string = heap_address( heap, offset);
- memcpy( string, value, length);
- string[length] = 0;
- }
- return offset;
+ size_t offset;
+ char *string;
+
+ offset = heap_alloc(heap, length+1);
+ if (offset != HNULL) {
+ string = heap_address(heap, offset);
+ memcpy(string, value, length);
+ string[length] = 0;
+ }
+ return offset;
}
-size_t heap_strdup( struct heap *heap, const char *string)
+size_t heap_strdup(struct heap *heap, const char *string)
{
- return heap_strndup( heap, string, strlen(string));
+ return heap_strndup(heap, string, strlen(string));
}
-int heap_read_write( struct heap *heap)
+int heap_read_write(struct heap *heap)
{
- return mprotect(heap->data, heap->capacity, PROT_READ|PROT_WRITE);
+ return mprotect(heap->data, heap->capacity, PROT_READ|PROT_WRITE);
}
-int heap_read_only( struct heap *heap)
+int heap_read_only(struct heap *heap)
{
- return mprotect(heap->data, heap->capacity, PROT_READ);
+ return mprotect(heap->data, heap->capacity, PROT_READ);
}
-
-
projects / platform / core / system / tizen-platform-config.git / blobdiff