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
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
|
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you 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 .
*/
#include <sal/config.h>
#include <assert.h>
#include <rtl/alloc.h>
#include <rtl/ustring.h>
#include <rtllifecycle.h>
#include "strimp.hxx"
#include "alloc_impl.hxx"
#include "alloc_arena.hxx"
sal_Int16 rtl_ImplGetDigit( sal_Unicode ch, sal_Int16 nRadix )
{
sal_Int16 n = -1;
if ( (ch >= '0') && (ch <= '9') )
n = ch-'0';
else if ( (ch >= 'a') && (ch <= 'z') )
n = ch-'a'+10;
else if ( (ch >= 'A') && (ch <= 'Z') )
n = ch-'A'+10;
return (n < nRadix) ? n : -1;
}
bool rtl_ImplIsWhitespace( sal_Unicode c )
{
/* Space or Control character? */
if ( (c <= 32) && c )
return true;
/* Only in the General Punctuation area Space or Control characters are included? */
if ( (c < 0x2000) || (c > 0x206F) )
return false;
if ( ((c >= 0x2000) && (c <= 0x200B)) || /* All Spaces */
(c == 0x2028) || /* LINE SEPARATOR */
(c == 0x2029) ) /* PARAGRAPH SEPARATOR */
return true;
return false;
}
/*
* TODO: add a slower, more awful, but more space efficient
* custom allocator for the pre-init phase. Existing slab
* allocator's minimum alloc size is 24bytes, and by default
* is 32 bytes.
*/
static rtl_arena_type *pre_arena = nullptr;
rtl_allocateStringFn rtl_allocateString = rtl_allocateMemory;
rtl_freeStringFn rtl_freeString = rtl_freeMemory;
extern "C" {
static void *pre_allocateStringFn(sal_Size n)
{
sal_Size size = RTL_MEMORY_ALIGN(n + 4, 4);
char *addr = static_cast<char*>(rtl_arena_alloc(pre_arena, &size));
assert(size>= 12);
reinterpret_cast<sal_uInt32*>(addr)[0] = size - 12;
return addr + 4;
}
static void pre_freeStringFn(void *data)
{
char *addr = static_cast<char*>(data) - 4;
sal_uInt32 size = reinterpret_cast<sal_uInt32*>(addr)[0] + 12;
rtl_arena_free(pre_arena, addr, size);
}
} // extern "C"
static void mark_static(void *addr, sal_Size /* size */, void *)
{
char *inner = static_cast<char*>(addr) + 4;
rtl_uString *str = reinterpret_cast<rtl_uString *>(inner);
str->refCount |= SAL_STRING_STATIC_FLAG;
}
void SAL_CALL rtl_alloc_preInit (rtl_alloc_preInit_phase_t phase) SAL_THROW_EXTERN_C()
{
switch (phase)
{
case rtlAllocPreInitStart:
{
rtl_allocateString = pre_allocateStringFn;
rtl_freeString = pre_freeStringFn;
pre_arena = rtl_arena_create("pre-init strings", 4, 0,
nullptr, rtl_arena_alloc,
rtl_arena_free, 0);
// To be consistent (and to ensure the rtl_cache threads are started).
ensureCacheSingleton();
}
break;
case rtlAllocPreInitEnd:
// back to normal
{
rtl_arena_foreach(pre_arena, mark_static);
rtl_allocateString = rtl_allocateMemory;
rtl_freeString = rtl_freeMemory;
// Stop the rtl cache thread to have no extra threads while forking.
rtl_cache_stop_threads();
// TODO: also re-initialize main allocator as well.
}
break;
case rtlAllocPostInit:
{
// We have forked and need to restart threads and anything
// that must start after forking.
rtl_cache_start_threads();
}
break;
}
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|
