Mercurial > ecos-v3_0-branch

annotate packages/services/memalloc/common/current/include/sepmeta.hxx @ 2863:7d8c61e6225c default tip

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
* Added execute permissions to files missed in conversion from CVS
author alexs
date Thu, 26 Mar 2009 20:39:18 +0000
parents 74dbf4c3f2e1
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
176
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
1 #ifndef CYGONCE_MEMALLOC_SEPMETA_HXX
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
2 #define CYGONCE_MEMALLOC_SEPMETA_HXX
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
3
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
4 //==========================================================================
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
5 //
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
6 // sepmeta.hxx
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
7 //
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
8 // Variable block memory pool with separate metadata
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
9 //
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
10 //==========================================================================
2729
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text.
jlarmour
parents: 210
diff changeset
11 // ####ECOSGPLCOPYRIGHTBEGIN####
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text.
jlarmour
parents: 210
diff changeset
12 // -------------------------------------------
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text.
jlarmour
parents: 210
diff changeset
13 // This file is part of eCos, the Embedded Configurable Operating System.
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text.
jlarmour
parents: 210
diff changeset
14 // Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
208
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents: 176
diff changeset
15 //
2729
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text.
jlarmour
parents: 210
diff changeset
16 // eCos is free software; you can redistribute it and/or modify it under
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text.
jlarmour
parents: 210
diff changeset
17 // the terms of the GNU General Public License as published by the Free
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text.
jlarmour
parents: 210
diff changeset
18 // Software Foundation; either version 2 or (at your option) any later
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text.
jlarmour
parents: 210
diff changeset
19 // version.
208
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents: 176
diff changeset
20 //
2729
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text.
jlarmour
parents: 210
diff changeset
21 // eCos is distributed in the hope that it will be useful, but WITHOUT
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text.
jlarmour
parents: 210
diff changeset
22 // ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text.
jlarmour
parents: 210
diff changeset
23 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text.
jlarmour
parents: 210
diff changeset
24 // for more details.
208
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents: 176
diff changeset
25 //
2729
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text.
jlarmour
parents: 210
diff changeset
26 // You should have received a copy of the GNU General Public License
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text.
jlarmour
parents: 210
diff changeset
27 // along with eCos; if not, write to the Free Software Foundation, Inc.,
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text.
jlarmour
parents: 210
diff changeset
28 // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
208
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents: 176
diff changeset
29 //
2729
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text.
jlarmour
parents: 210
diff changeset
30 // As a special exception, if other files instantiate templates or use
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text.
jlarmour
parents: 210
diff changeset
31 // macros or inline functions from this file, or you compile this file
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text.
jlarmour
parents: 210
diff changeset
32 // and link it with other works to produce a work based on this file,
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text.
jlarmour
parents: 210
diff changeset
33 // this file does not by itself cause the resulting work to be covered by
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text.
jlarmour
parents: 210
diff changeset
34 // the GNU General Public License. However the source code for this file
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text.
jlarmour
parents: 210
diff changeset
35 // must still be made available in accordance with section (3) of the GNU
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text.
jlarmour
parents: 210
diff changeset
36 // General Public License v2.
208
e0c0827131d1 Merge from eCos master repository on 2002-05-20-20:11:54-BST
jlarmour
parents: 176
diff changeset
37 //
2729
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text.
jlarmour
parents: 210
diff changeset
38 // This exception does not invalidate any other reasons why a work based
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text.
jlarmour
parents: 210
diff changeset
39 // on this file might be covered by the GNU General Public License.
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text.
jlarmour
parents: 210
diff changeset
40 // -------------------------------------------
74dbf4c3f2e1 Update all copyright banners to reflect FSF ownership; fix and improve licence text.
jlarmour
parents: 210
diff changeset
41 // ####ECOSGPLCOPYRIGHTEND####
176
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
42 //==========================================================================
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
43 //#####DESCRIPTIONBEGIN####
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
44 //
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
45 // Author(s): jlarmour
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
46 // Contributors:
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
47 // Date: 2001-06-28
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
48 // Purpose: Define Sepmeta class interface
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
49 // Description: Inline class for constructing a variable block allocator
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
50 // with separate metadata
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
51 // Usage: #include <cyg/memalloc/sepmeta.hxx>
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
52 //
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
53 //
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
54 //####DESCRIPTIONEND####
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
55 //
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
56 //==========================================================================
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
57
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
58 // CONFIGURATION
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
59
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
60 #include <pkgconf/memalloc.h>
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
61 #ifdef CYGSEM_MEMALLOC_ALLOCATOR_SEPMETA_THREADAWARE
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
62 # include <pkgconf/system.h>
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
63 # ifdef CYGPKG_KERNEL
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
64 # include <pkgconf/kernel.h>
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
65 # endif
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
66 #endif
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
67
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
68 #if 0
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
69 // when used as an implementation for malloc, we need the following
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
70 // to let the system know the name of the class
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
71 #define CYGCLS_MEMALLOC_MALLOC_IMPL Cyg_Mempool_Sepmeta
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
72 #endif
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
73
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
74 // if the implementation is all that's required, don't output anything else
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
75 #ifndef __MALLOC_IMPL_WANTED
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
76 // INCLUDES
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
77
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
78 #include <cyg/infra/cyg_type.h> // types
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
79 #include <cyg/infra/cyg_ass.h> // assertion macros
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
80
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
81 #ifdef CYGFUN_KERNEL_THREADS_TIMER
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
82 # include <cyg/kernel/ktypes.h> // cyg_tick_count
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
83 #endif
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
84
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
85 #ifdef CYGSEM_MEMALLOC_ALLOCATOR_SEPMETA_THREADAWARE
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
86 # include <cyg/memalloc/mempolt2.hxx> // kernel safe mempool template
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
87 #endif
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
88
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
89 #include <cyg/memalloc/sepmetaimpl.hxx>// implementation of this mem pool
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
90 #include <cyg/memalloc/common.hxx> // Common memory allocator infra
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
91
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
92
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
93 // TYPE DEFINITIONS
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
94
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
95 class Cyg_Mempool_Sepmeta
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
96 {
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
97 protected:
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
98 // This is a horrible workaround for the fact that C++ doesn't let
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
99 // you construct mypool explicitly if you have to initialize a struct
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
100 // to pass as an argument first.
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
101 struct Cyg_Mempool_Sepmeta_Implementation::constructorargs args;
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
102
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
103 #ifdef CYGSEM_MEMALLOC_ALLOCATOR_SEPMETA_THREADAWARE
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
104 Cyg_Mempolt2<Cyg_Mempool_Sepmeta_Implementation> mypool;
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
105 #else
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
106 Cyg_Mempool_Sepmeta_Implementation mypool;
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
107 #endif
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
108 public:
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
109 // This API makes concrete a class which implements a thread-safe
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
110 // kernel-savvy memory pool which manages variable size blocks with
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
111 // separate metadata.
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
112
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
113 // Constructor: gives the base and size of the arena in which memory is
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
114 // to be carved out, note that management structures are taken from the
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
115 // same arena.
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
116 Cyg_Mempool_Sepmeta( cyg_uint8 * /* base */, cyg_int32 /* size */,
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
117 cyg_int32 /* alignment */,
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
118 cyg_uint8 * /* metabase */,
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
119 cyg_uint32 /* metasize */);
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
120
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
121 // Destructor
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
122 ~Cyg_Mempool_Sepmeta();
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
123
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
124 // get some memory; wait if none available
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
125 // if we aren't configured to be thread-aware this is irrelevant
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
126 #ifdef CYGSEM_MEMALLOC_ALLOCATOR_SEPMETA_THREADAWARE
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
127 cyg_uint8 *
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
128 alloc( cyg_int32 /* size */ );
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
129
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
130 # ifdef CYGFUN_KERNEL_THREADS_TIMER
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
131 // get some memory with a timeout
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
132 cyg_uint8 *
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
133 alloc( cyg_int32 /* size */, cyg_tick_count /* delay_timeout */ );
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
134 # endif
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
135 #endif
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
136
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
137 // get some memory, return NULL if none available
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
138 cyg_uint8 *
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
139 try_alloc( cyg_int32 /* size */ );
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
140
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
141 // resize existing allocation, if oldsize is non-NULL, previous
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
142 // allocation size is placed into it. If previous size not available,
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
143 // it is set to 0. NB previous allocation size may have been rounded up.
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
144 // Occasionally the allocation can be adjusted *backwards* as well as,
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
145 // or instead of forwards, therefore the address of the resized
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
146 // allocation is returned, or NULL if no resizing was possible.
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
147 // Note that this differs from ::realloc() in that no attempt is
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
148 // made to call malloc() if resizing is not possible - that is left
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
149 // to higher layers. The data is copied from old to new though.
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
150 // The effects of alloc_ptr==NULL or newsize==0 are undefined
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
151 cyg_uint8 *
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
152 resize_alloc( cyg_uint8 * /* alloc_ptr */, cyg_int32 /* newsize */,
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
153 cyg_int32 * /* oldsize */ =NULL );
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
154
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
155 // free the memory back to the pool
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
156 // returns true on success
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
157 cyg_bool
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
158 free( cyg_uint8 * /* ptr */, cyg_int32 /* size */ =0 );
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
159
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
160 // Get memory pool status
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
161 // flags is a bitmask of requested fields to fill in. The flags are
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
162 // defined in common.hxx
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
163 void
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
164 get_status( cyg_mempool_status_flag_t /* flags */,
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
165 Cyg_Mempool_Status & /* status */ );
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
166
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
167 CYGDBG_DEFINE_CHECK_THIS
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
168 };
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
169
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
170 #endif // ifndef __MALLOC_IMPL_WANTED
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
171
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
172 #endif // ifndef CYGONCE_MEMALLOC_SEPMETA_HXX
3902ef905c9c Merge from eCos master repository on 2001-08-03-06:43:13-BST
jlarmour
parents:
diff changeset
173 // EOF sepmeta.hxx