Line data Source code
1 : /* File: universal_memory_arena.inl; Copyright and License: see below */
2 :
3 : #include <assert.h>
4 :
5 2 : static inline void universal_memory_arena_init ( universal_memory_arena_t *this_,
6 : void* mem_buf_start,
7 : size_t mem_buf_size )
8 : {
9 2 : assert( mem_buf_start != NULL );
10 2 : (*this_).int_buf_start = mem_buf_start;
11 2 : (*this_).int_buf_size = mem_buf_size / sizeof(int);
12 2 : (*this_).int_buf_used = 0;
13 2 : }
14 :
15 2 : static inline void universal_memory_arena_destroy ( universal_memory_arena_t *this_ )
16 : {
17 2 : assert( (*this_).int_buf_start != NULL );
18 2 : (*this_).int_buf_start = NULL;
19 2 : }
20 :
21 1 : static inline void universal_memory_arena_reset ( universal_memory_arena_t *this_ )
22 : {
23 1 : (*this_).int_buf_used = 0;
24 1 : }
25 :
26 12 : static inline u8_error_t universal_memory_arena_get_block ( universal_memory_arena_t *this_,
27 : size_t block_size,
28 : void **out_block )
29 : {
30 12 : assert( out_block != NULL );
31 12 : u8_error_t err = U8_ERROR_NONE;
32 :
33 12 : const size_t requested_ints = ( block_size + sizeof(int) - 1 ) / sizeof(int);
34 :
35 12 : if (( (*this_).int_buf_used + requested_ints ) > (*this_).int_buf_size )
36 : {
37 2 : err = U8_ERROR_ARRAY_BUFFER_EXCEEDED;
38 2 : *out_block = NULL;
39 : }
40 : else
41 : {
42 10 : err = U8_ERROR_NONE;
43 10 : *out_block = &( (*this_).int_buf_start[(*this_).int_buf_used] );
44 10 : (*this_).int_buf_used += requested_ints;
45 : }
46 :
47 12 : return err;
48 : }
49 :
50 :
51 : /*
52 : Copyright 2021-2025 Andreas Warnke
53 :
54 : Licensed under the Apache License, Version 2.0 (the "License");
55 : you may not use this file except in compliance with the License.
56 : You may obtain a copy of the License at
57 :
58 : http://www.apache.org/licenses/LICENSE-2.0
59 :
60 : Unless required by applicable law or agreed to in writing, software
61 : distributed under the License is distributed on an "AS IS" BASIS,
62 : WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
63 : See the License for the specific language governing permissions and
64 : limitations under the License.
65 : */
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