blob: 625d789e79638bceaaf0a1ea6e6fb358128df179 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
|
/*
* Copyright (C) 2014 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <unistd.h>
#include "jemalloc.h"
void* je_pvalloc(size_t bytes) {
size_t pagesize = sysconf(_SC_PAGESIZE);
return je_memalign(pagesize, (bytes + pagesize - 1) & ~(pagesize - 1));
}
#ifdef je_memalign
#undef je_memalign
#endif
// The man page for memalign says it fails if boundary is not a power of 2,
// but this is not true. Both glibc and dlmalloc round up to the next power
// of 2, so we'll do the same.
void* je_memalign_round_up_boundary(size_t boundary, size_t size) {
unsigned int power_of_2 = static_cast<unsigned int>(boundary);
if (power_of_2 != 0) {
power_of_2 = 1UL << (sizeof(unsigned int)*8 - 1 - __builtin_clz(power_of_2));
if (power_of_2 != boundary) {
boundary = power_of_2 << 1;
}
} else {
boundary = 1;
}
return je_memalign(boundary, size);
}
|
