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
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
|
// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
/*
******************************************************************************
* Copyright (C) 2001-2014, International Business Machines
* Corporation and others. All Rights Reserved.
******************************************************************************
* file name: uclean.h
* encoding: UTF-8
* tab size: 8 (not used)
* indentation:4
*
* created on: 2001July05
* created by: George Rhoten
*/
#ifndef __UCLEAN_H__
#define __UCLEAN_H__
#include "unicode/utypes.h"
/**
* \file
* \brief C API: Initialize and clean up ICU
*/
/**
* Initialize ICU.
*
* Use of this function is optional. It is OK to simply use ICU
* services and functions without first having initialized
* ICU by calling u_init().
*
* u_init() will attempt to load some part of ICU's data, and is
* useful as a test for configuration or installation problems that
* leave the ICU data inaccessible. A successful invocation of u_init()
* does not, however, guarantee that all ICU data is accessible.
*
* Multiple calls to u_init() cause no harm, aside from the small amount
* of time required.
*
* In old versions of ICU, u_init() was required in multi-threaded applications
* to ensure the thread safety of ICU. u_init() is no longer needed for this purpose.
*
* @param status An ICU UErrorCode parameter. It must not be <code>NULL</code>.
* An Error will be returned if some required part of ICU data can not
* be loaded or initialized.
* The function returns immediately if the input error code indicates a
* failure, as usual.
*
* @stable ICU 2.6
*/
U_STABLE void U_EXPORT2
u_init(UErrorCode *status);
#ifndef U_HIDE_SYSTEM_API
/**
* Clean up the system resources, such as allocated memory or open files,
* used in all ICU libraries. This will free/delete all memory owned by the
* ICU libraries, and return them to their original load state. All open ICU
* items (collators, resource bundles, converters, etc.) must be closed before
* calling this function, otherwise ICU may not free its allocated memory
* (e.g. close your converters and resource bundles before calling this
* function). Generally, this function should be called once just before
* an application exits. For applications that dynamically load and unload
* the ICU libraries (relatively uncommon), u_cleanup() should be called
* just before the library unload.
* <p>
* u_cleanup() also clears any ICU heap functions, mutex functions or
* trace functions that may have been set for the process.
* This has the effect of restoring ICU to its initial condition, before
* any of these override functions were installed. Refer to
* u_setMemoryFunctions(), u_setMutexFunctions and
* utrace_setFunctions(). If ICU is to be reinitialized after after
* calling u_cleanup(), these runtime override functions will need to
* be set up again if they are still required.
* <p>
* u_cleanup() is not thread safe. All other threads should stop using ICU
* before calling this function.
* <p>
* Any open ICU items will be left in an undefined state by u_cleanup(),
* and any subsequent attempt to use such an item will give unpredictable
* results.
* <p>
* After calling u_cleanup(), an application may continue to use ICU by
* calling u_init(). An application must invoke u_init() first from one single
* thread before allowing other threads call u_init(). All threads existing
* at the time of the first thread's call to u_init() must also call
* u_init() themselves before continuing with other ICU operations.
* <p>
* The use of u_cleanup() just before an application terminates is optional,
* but it should be called only once for performance reasons. The primary
* benefit is to eliminate reports of memory or resource leaks originating
* in ICU code from the results generated by heap analysis tools.
* <p>
* <strong>Use this function with great care!</strong>
* </p>
*
* @stable ICU 2.0
* @system
*/
U_STABLE void U_EXPORT2
u_cleanup(void);
U_CDECL_BEGIN
/**
* Pointer type for a user supplied memory allocation function.
* @param context user supplied value, obtained from from u_setMemoryFunctions().
* @param size The number of bytes to be allocated
* @return Pointer to the newly allocated memory, or NULL if the allocation failed.
* @stable ICU 2.8
* @system
*/
typedef void *U_CALLCONV UMemAllocFn(const void *context, size_t size);
/**
* Pointer type for a user supplied memory re-allocation function.
* @param context user supplied value, obtained from from u_setMemoryFunctions().
* @param size The number of bytes to be allocated
* @return Pointer to the newly allocated memory, or NULL if the allocation failed.
* @stable ICU 2.8
* @system
*/
typedef void *U_CALLCONV UMemReallocFn(const void *context, void *mem, size_t size);
/**
* Pointer type for a user supplied memory free function. Behavior should be
* similar the standard C library free().
* @param context user supplied value, obtained from from u_setMemoryFunctions().
* @param mem Pointer to the memory block to be resized
* @param size The new size for the block
* @return Pointer to the resized memory block, or NULL if the resizing failed.
* @stable ICU 2.8
* @system
*/
typedef void U_CALLCONV UMemFreeFn (const void *context, void *mem);
/**
* Set the functions that ICU will use for memory allocation.
* Use of this function is optional; by default (without this function), ICU will
* use the standard C library malloc() and free() functions.
* This function can only be used when ICU is in an initial, unused state, before
* u_init() has been called.
* @param context This pointer value will be saved, and then (later) passed as
* a parameter to the memory functions each time they
* are called.
* @param a Pointer to a user-supplied malloc function.
* @param r Pointer to a user-supplied realloc function.
* @param f Pointer to a user-supplied free function.
* @param status Receives error values.
* @stable ICU 2.8
* @system
*/
U_STABLE void U_EXPORT2
u_setMemoryFunctions(const void *context, UMemAllocFn * U_CALLCONV a, UMemReallocFn * U_CALLCONV r, UMemFreeFn * U_CALLCONV f,
UErrorCode *status);
U_CDECL_END
#ifndef U_HIDE_DEPRECATED_API
/*********************************************************************************
*
* Deprecated Functions
*
* The following functions for user supplied mutexes are no longer supported.
* Any attempt to use them will return a U_UNSUPPORTED_ERROR.
*
**********************************************************************************/
/**
* An opaque pointer type that represents an ICU mutex.
* For user-implemented mutexes, the value will typically point to a
* struct or object that implements the mutex.
* @deprecated ICU 52. This type is no longer supported.
* @system
*/
typedef void *UMTX;
U_CDECL_BEGIN
/**
* Function Pointer type for a user supplied mutex initialization function.
* The user-supplied function will be called by ICU whenever ICU needs to create a
* new mutex. The function implementation should create a mutex, and store a pointer
* to something that uniquely identifies the mutex into the UMTX that is supplied
* as a paramter.
* @param context user supplied value, obtained from from u_setMutexFunctions().
* @param mutex Receives a pointer that identifies the new mutex.
* The mutex init function must set the UMTX to a non-null value.
* Subsequent calls by ICU to lock, unlock, or destroy a mutex will
* identify the mutex by the UMTX value.
* @param status Error status. Report errors back to ICU by setting this variable
* with an error code.
* @deprecated ICU 52. This function is no longer supported.
* @system
*/
typedef void U_CALLCONV UMtxInitFn (const void *context, UMTX *mutex, UErrorCode* status);
/**
* Function Pointer type for a user supplied mutex functions.
* One of the user-supplied functions with this signature will be called by ICU
* whenever ICU needs to lock, unlock, or destroy a mutex.
* @param context user supplied value, obtained from from u_setMutexFunctions().
* @param mutex specify the mutex on which to operate.
* @deprecated ICU 52. This function is no longer supported.
* @system
*/
typedef void U_CALLCONV UMtxFn (const void *context, UMTX *mutex);
U_CDECL_END
/**
* Set the functions that ICU will use for mutex operations
* Use of this function is optional; by default (without this function), ICU will
* directly access system functions for mutex operations
* This function can only be used when ICU is in an initial, unused state, before
* u_init() has been called.
* @param context This pointer value will be saved, and then (later) passed as
* a parameter to the user-supplied mutex functions each time they
* are called.
* @param init Pointer to a mutex initialization function. Must be non-null.
* @param destroy Pointer to the mutex destroy function. Must be non-null.
* @param lock pointer to the mutex lock function. Must be non-null.
* @param unlock Pointer to the mutex unlock function. Must be non-null.
* @param status Receives error values.
* @deprecated ICU 52. This function is no longer supported.
* @system
*/
U_DEPRECATED void U_EXPORT2
u_setMutexFunctions(const void *context, UMtxInitFn *init, UMtxFn *destroy, UMtxFn *lock, UMtxFn *unlock,
UErrorCode *status);
/**
* Pointer type for a user supplied atomic increment or decrement function.
* @param context user supplied value, obtained from from u_setAtomicIncDecFunctions().
* @param p Pointer to a 32 bit int to be incremented or decremented
* @return The value of the variable after the inc or dec operation.
* @deprecated ICU 52. This function is no longer supported.
* @system
*/
typedef int32_t U_CALLCONV UMtxAtomicFn(const void *context, int32_t *p);
/**
* Set the functions that ICU will use for atomic increment and decrement of int32_t values.
* Use of this function is optional; by default (without this function), ICU will
* use its own internal implementation of atomic increment/decrement.
* This function can only be used when ICU is in an initial, unused state, before
* u_init() has been called.
* @param context This pointer value will be saved, and then (later) passed as
* a parameter to the increment and decrement functions each time they
* are called. This function can only be called
* @param inc Pointer to a function to do an atomic increment operation. Must be non-null.
* @param dec Pointer to a function to do an atomic decrement operation. Must be non-null.
* @param status Receives error values.
* @deprecated ICU 52. This function is no longer supported.
* @system
*/
U_DEPRECATED void U_EXPORT2
u_setAtomicIncDecFunctions(const void *context, UMtxAtomicFn *inc, UMtxAtomicFn *dec,
UErrorCode *status);
#endif /* U_HIDE_DEPRECATED_API */
#endif /* U_HIDE_SYSTEM_API */
#endif
|
