1 /*
2 * Copyright (C) 2014 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include <sys/param.h>
18 #include <unistd.h>
19
20 #include "jemalloc.h"
21 #include "private/bionic_macros.h"
22
je_pvalloc(size_t bytes)23 void* je_pvalloc(size_t bytes) {
24 size_t pagesize = getpagesize();
25 size_t size = BIONIC_ALIGN(bytes, pagesize);
26 if (size < bytes) {
27 return NULL;
28 }
29 return je_memalign(pagesize, size);
30 }
31
32 #ifdef je_memalign
33 #undef je_memalign
34 #endif
35
36 // The man page for memalign says it fails if boundary is not a power of 2,
37 // but this is not true. Both glibc and dlmalloc round up to the next power
38 // of 2, so we'll do the same.
je_memalign_round_up_boundary(size_t boundary,size_t size)39 void* je_memalign_round_up_boundary(size_t boundary, size_t size) {
40 if (boundary != 0) {
41 if (!powerof2(boundary)) {
42 boundary = BIONIC_ROUND_UP_POWER_OF_2(boundary);
43 }
44 } else {
45 boundary = 1;
46 }
47 return je_memalign(boundary, size);
48 }
49