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comparison packages/kernel/current/include/mfiximpl.inl @ 2:443894e2e912 ecos-v1_2_1-release

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Block commit of eCos version 1.2.1
author jlarmour
date Tue, 11 May 1999 12:24:34 +0000
parents 3111d98ba7b3
children c38311975d4f
comparison
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1:72f549f0d891 2:443894e2e912
1 #ifndef CYGONCE_KERNEL_MFIXIMPL_INL 1 #ifndef CYGONCE_KERNEL_MFIXIMPL_INL
2 #define CYGONCE_KERNEL_MFIXIMPL_INL 2 #define CYGONCE_KERNEL_MFIXIMPL_INL
3 3
4 //========================================================================== 4 //==========================================================================
5 // 5 //
6 // mfiximpl.inl 6 // mfiximpl.inl
7 // 7 //
8 // Memory pool with fixed block class declarations 8 // Memory pool with fixed block class declarations
9 // 9 //
10 //========================================================================== 10 //==========================================================================
11 //####COPYRIGHTBEGIN#### 11 //####COPYRIGHTBEGIN####
12 // 12 //
13 // ------------------------------------------- 13 // -------------------------------------------
23 // 23 //
24 // The Original Code is eCos - Embedded Cygnus Operating System, released 24 // The Original Code is eCos - Embedded Cygnus Operating System, released
25 // September 30, 1998. 25 // September 30, 1998.
26 // 26 //
27 // The Initial Developer of the Original Code is Cygnus. Portions created 27 // The Initial Developer of the Original Code is Cygnus. Portions created
28 // by Cygnus are Copyright (C) 1998 Cygnus Solutions. All Rights Reserved. 28 // by Cygnus are Copyright (C) 1998,1999 Cygnus Solutions. All Rights Reserved.
29 // ------------------------------------------- 29 // -------------------------------------------
30 // 30 //
31 //####COPYRIGHTEND#### 31 //####COPYRIGHTEND####
32 //========================================================================== 32 //==========================================================================
33 //#####DESCRIPTIONBEGIN#### 33 //#####DESCRIPTIONBEGIN####
34 // 34 //
35 // Author(s): hmt 35 // Author(s): hmt
36 // Contributors: hmt 36 // Contributors: hmt
37 // Date: 1998-03-23 37 // Date: 1998-03-23
38 // Purpose: Define Mfiximpl class interface 38 // Purpose: Define Mfiximpl class interface
39 // Description: Inline class for constructing a fixed block allocator 39 // Description: Inline class for constructing a fixed block allocator
40 // Usage: #include <cyg/kernel/mfiximpl.hxx> 40 // Usage: #include <cyg/kernel/mfiximpl.hxx>
41 // #include <cyg/kernel/mfiximpl.inl> 41 // #include <cyg/kernel/mfiximpl.inl>
42 // 42 //
43 //####DESCRIPTIONEND#### 43 //####DESCRIPTIONEND####
44 // 44 //
45 //========================================================================== 45 //==========================================================================
46 46
53 CYG_ADDRWORD alloc_unit ) 53 CYG_ADDRWORD alloc_unit )
54 { 54 {
55 cyg_int32 i; 55 cyg_int32 i;
56 bitmap = (cyg_uint32 *)base; 56 bitmap = (cyg_uint32 *)base;
57 blocksize = alloc_unit; 57 blocksize = alloc_unit;
58 numblocks = size / blocksize;
59 top = base + size;
60 58
61 CYG_ASSERT( blocksize > 0, "Bad blocksize" ); 59 CYG_ASSERT( blocksize > 0, "Bad blocksize" );
62 CYG_ASSERT( size > 2, "Bad blocksize" ); 60 CYG_ASSERT( size > 2, "Bad blocksize" );
63 CYG_ASSERT( blocksize < size, "blocksize, size bad" ); 61 CYG_ASSERT( blocksize < size, "blocksize, size bad" );
62
63 numblocks = size / blocksize;
64 top = base + size;
65
64 CYG_ASSERT( numblocks >= 2, "numblocks bad" ); 66 CYG_ASSERT( numblocks >= 2, "numblocks bad" );
65 67
66 i = (numblocks + 31)/32; // number of words to map blocks 68 i = (numblocks + 31)/32; // number of words to map blocks
67 while ( (i * 4 + numblocks * blocksize) > size ) { 69 while ( (i * 4 + numblocks * blocksize) > size ) {
68 numblocks --; // steal one block for admin 70 numblocks --; // steal one block for admin