source: rtems/testsuites/libtests/malloc04/init.c @ eea21eac

5
Last change on this file since eea21eac was eea21eac, checked in by Sebastian Huber <sebastian.huber@…>, on Dec 13, 2019 at 5:18:36 AM

bsps: Rework work area initialization

The work area initialization was done by the BSP through
bsp_work_area_initialize(). This approach predated the system
initialization through the system initialization linker set. The
workspace and C program heap were unconditionally initialized. The aim
is to support RTEMS application configurations which do not need the
workspace and C program heap. In these configurations, the workspace
and C prgram heap should not get initialized.

Change all bsp_work_area_initialize() to implement _Memory_Get()
instead. Move the dirty memory, sbrk(), per-CPU data, workspace, and
malloc() heap initialization into separate system initialization steps.
This makes it also easier to test the individual initialization steps.

This change adds a dependency to _Heap_Extend() to all BSPs. This
dependency will be removed in a follow up change.

Update #3838.

  • Property mode set to 100644
File size: 3.8 KB
Line 
1/*
2 *  COPYRIGHT (c) 1989-2011.
3 *  On-Line Applications Research Corporation (OAR).
4 *
5 *  The license and distribution terms for this file may be
6 *  found in the file LICENSE in this distribution or at
7 *  http://www.rtems.org/license/LICENSE.
8 */
9
10#ifdef HAVE_CONFIG_H
11#include "config.h"
12#endif
13
14#include <tmacros.h>
15#include "test_support.h"
16#include <rtems/libcsupport.h>
17#include <rtems/malloc.h>
18#include <errno.h>
19
20const char rtems_test_name[] = "MALLOC 4";
21
22/* configuration information */
23/* At top of file to have access to configuration variables */
24
25#define CONFIGURE_APPLICATION_NEEDS_SIMPLE_CONSOLE_DRIVER
26#define CONFIGURE_APPLICATION_NEEDS_CLOCK_DRIVER
27
28#define CONFIGURE_MAXIMUM_TASKS             1
29#define CONFIGURE_INITIAL_EXTENSIONS RTEMS_TEST_INITIAL_EXTENSION
30
31#define CONFIGURE_RTEMS_INIT_TASKS_TABLE
32
33#define CONFIGURE_INIT
34#include <rtems/confdefs.h>
35/* end of configuration */
36
37#ifndef CONFIGURE_MALLOC_BSP_SUPPORTS_SBRK
38void *rtems_heap_null_extend(
39  Heap_Control *heap,
40  size_t alloc_size
41)
42{
43  return rtems_heap_extend_via_sbrk( heap, alloc_size );
44}
45#endif
46
47char Malloc_Heap[ 1024 ] CPU_STRUCTURE_ALIGNMENT;
48
49/*
50 * Use volatile to prevent compiler optimizations due to the malloc() builtin.
51 */
52volatile int sbrk_count;
53
54Heap_Control TempHeap;
55
56size_t offset;
57
58void * sbrk(ptrdiff_t incr)
59{
60  void *p = (void *) -1;
61
62  printf( "sbrk(%td)\n", incr );
63  if ( sbrk_count == -1 ) {
64    p = (void *) -2;
65    sbrk_count = 0;
66  } else if ( offset + incr <= sizeof(Malloc_Heap) ) {
67    p = &Malloc_Heap[ offset ];
68    offset += incr;
69  }
70
71  ++sbrk_count;
72
73  return p;
74}
75
76rtems_task Init(
77  rtems_task_argument argument
78)
79{
80  Heap_Control *real_heap;
81  Memory_Area area;
82  Memory_Information mem = {
83    .count = 0,
84    .areas = &area
85  };
86
87  void *p;
88
89  TEST_BEGIN();
90
91  /* Safe information on real heap */
92  real_heap = malloc_get_heap_pointer();
93  malloc_set_heap_pointer( &TempHeap );
94
95  rtems_heap_set_sbrk_amount( 0 );
96
97  puts( "No sbrk() amount" );
98
99  sbrk_count = 0;
100  offset     = 256;
101  _Memory_Initialize_by_size( &area, &Malloc_Heap[ 0 ], offset );
102  RTEMS_Malloc_Initialize( &mem, NULL );
103
104  errno = 0;
105  p = malloc( 256 );
106  rtems_test_assert( p == NULL );
107  rtems_test_assert( errno == ENOMEM );
108  rtems_test_assert( sbrk_count == 0 );
109
110  rtems_heap_set_sbrk_amount( 256 );
111
112  puts( "Misaligned extend" );
113
114  sbrk_count = 0;
115  offset     = 256;
116  _Memory_Initialize_by_size( &area, &Malloc_Heap[ 0 ], offset );
117  RTEMS_Malloc_Initialize( &mem, NULL );
118
119  p = malloc(1);
120  rtems_test_assert( p != NULL );
121  rtems_test_assert( sbrk_count == 0 );
122
123  p = malloc(257);
124  rtems_test_assert( p != NULL );
125  rtems_test_assert( sbrk_count == 1 );
126
127  puts( "Not enough sbrk() space" );
128
129  sbrk_count = 0;
130  offset     = 256;
131  _Memory_Initialize_by_size( &area, &Malloc_Heap[ 0 ], offset );
132  RTEMS_Malloc_Initialize( &mem, NULL );
133
134  errno = 0;
135  p = malloc( sizeof( Malloc_Heap ) );
136  rtems_test_assert( p == NULL );
137  rtems_test_assert( errno == ENOMEM );
138  rtems_test_assert( sbrk_count == 1 );
139
140  puts( "Valid heap extend" );
141
142  sbrk_count = 0;
143  offset     = 256;
144  _Memory_Initialize_by_size( &area, &Malloc_Heap[ 0 ], offset );
145  RTEMS_Malloc_Initialize( &mem, NULL );
146
147  p = malloc( 128 );
148  rtems_test_assert( p != NULL );
149  rtems_test_assert( sbrk_count == 0 );
150
151  p = malloc( 128 );
152  rtems_test_assert( p != NULL );
153  rtems_test_assert( sbrk_count == 1 );
154
155  puts( "Invalid heap extend" );
156
157  sbrk_count = -1;
158  offset     = 256;
159  _Memory_Initialize_by_size( &area, &Malloc_Heap[ 0 ], offset );
160  RTEMS_Malloc_Initialize( &mem, NULL );
161
162  errno = 0;
163  p = malloc( 256 );
164  rtems_test_assert( p == NULL );
165  rtems_test_assert( errno == ENOMEM );
166  rtems_test_assert( sbrk_count == 2 );
167
168  /* Restore information on real heap */
169  malloc_set_heap_pointer( real_heap );
170
171  TEST_END();
172
173  rtems_test_exit(0);
174}
175
176/* end of file */
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