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
|
// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
/*
******************************************************************************
*
* Copyright (C) 2002-2015, International Business Machines
* Corporation and others. All Rights Reserved.
*
******************************************************************************
*
* File cmemory.c ICU Heap allocation.
* All ICU heap allocation, both for C and C++ new of ICU
* class types, comes through these functions.
*
* If you have a need to replace ICU allocation, this is the
* place to do it.
*
* Note that uprv_malloc(0) returns a non-NULL pointer, and
* that a subsequent free of that pointer value is a NOP.
*
******************************************************************************
*/
#include "unicode/uclean.h"
#include "cmemory.h"
#include "putilimp.h"
#include "uassert.h"
#include <stdlib.h>
/* uprv_malloc(0) returns a pointer to this read-only data. */
static const int32_t zeroMem[] = {0, 0, 0, 0, 0, 0};
/* Function Pointers for user-supplied heap functions */
static const void *pContext;
static UMemAllocFn *pAlloc;
static UMemReallocFn *pRealloc;
static UMemFreeFn *pFree;
#if U_DEBUG && defined(UPRV_MALLOC_COUNT)
#include <stdio.h>
static int n=0;
static long b=0;
#endif
U_CAPI void * U_EXPORT2
uprv_malloc(size_t s) {
#if U_DEBUG && defined(UPRV_MALLOC_COUNT)
#if 1
putchar('>');
fflush(stdout);
#else
fprintf(stderr,"MALLOC\t#%d\t%ul bytes\t%ul total\n", ++n,s,(b+=s)); fflush(stderr);
#endif
#endif
if (s > 0) {
if (pAlloc) {
return (*pAlloc)(pContext, s);
} else {
return uprv_default_malloc(s);
}
} else {
return (void *)zeroMem;
}
}
U_CAPI void * U_EXPORT2
uprv_realloc(void * buffer, size_t size) {
#if U_DEBUG && defined(UPRV_MALLOC_COUNT)
putchar('~');
fflush(stdout);
#endif
if (buffer == zeroMem) {
return uprv_malloc(size);
} else if (size == 0) {
if (pFree) {
(*pFree)(pContext, buffer);
} else {
uprv_default_free(buffer);
}
return (void *)zeroMem;
} else {
if (pRealloc) {
return (*pRealloc)(pContext, buffer, size);
} else {
return uprv_default_realloc(buffer, size);
}
}
}
U_CAPI void U_EXPORT2
uprv_free(void *buffer) {
#if U_DEBUG && defined(UPRV_MALLOC_COUNT)
putchar('<');
fflush(stdout);
#endif
if (buffer != zeroMem) {
if (pFree) {
(*pFree)(pContext, buffer);
} else {
uprv_default_free(buffer);
}
}
}
U_CAPI void * U_EXPORT2
uprv_calloc(size_t num, size_t size) {
void *mem = NULL;
size *= num;
mem = uprv_malloc(size);
if (mem) {
uprv_memset(mem, 0, size);
}
return mem;
}
U_CAPI void U_EXPORT2
u_setMemoryFunctions(const void *context, UMemAllocFn *a, UMemReallocFn *r, UMemFreeFn *f, UErrorCode *status)
{
if (U_FAILURE(*status)) {
return;
}
if (a==NULL || r==NULL || f==NULL) {
*status = U_ILLEGAL_ARGUMENT_ERROR;
return;
}
pContext = context;
pAlloc = a;
pRealloc = r;
pFree = f;
}
U_CFUNC UBool cmemory_cleanup(void) {
pContext = NULL;
pAlloc = NULL;
pRealloc = NULL;
pFree = NULL;
return TRUE;
}
|