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/*
* Copyright © 2015 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*
* Authors:
* Jason Ekstrand (jason@jlekstrand.net)
*
*/
#ifndef NIR_ARRAY_H
#define NIR_ARRAY_H
#ifdef __cplusplus
extern "C" {
#endif
typedef struct {
void *mem_ctx;
size_t size;
size_t alloc;
void *data;
} nir_array;
static inline void
nir_array_init(nir_array *arr, void *mem_ctx)
{
arr->mem_ctx = mem_ctx;
arr->size = 0;
arr->alloc = 0;
arr->data = NULL;
}
static inline void
nir_array_fini(nir_array *arr)
{
if (arr->mem_ctx)
ralloc_free(arr->data);
else
free(arr->data);
}
#define NIR_ARRAY_INITIAL_SIZE 64
/* Increments the size of the array by the given ammount and returns a
* pointer to the beginning of the newly added space.
*/
static inline void *
nir_array_grow(nir_array *arr, size_t additional)
{
size_t new_size = arr->size + additional;
if (new_size > arr->alloc) {
if (arr->alloc == 0)
arr->alloc = NIR_ARRAY_INITIAL_SIZE;
while (new_size > arr->alloc)
arr->alloc *= 2;
if (arr->mem_ctx)
arr->data = reralloc_size(arr->mem_ctx, arr->data, arr->alloc);
else
arr->data = realloc(arr->data, arr->alloc);
}
void *ptr = (void *)((char *)arr->data + arr->size);
arr->size = new_size;
return ptr;
}
#define nir_array_add(arr, type, elem) \
*(type *)nir_array_grow(arr, sizeof(type)) = (elem)
#define nir_array_foreach(arr, type, elem) \
for (type *elem = (type *)(arr)->data; \
elem < (type *)((char *)(arr)->data + (arr)->size); elem++)
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif /* NIR_ARRAY_H */
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