1 /*
2 * Copyright 2009, Axel Dörfler, axeld@pinc-software.de.
3 * Distributed under the terms of the MIT License.
4 */
5
6
7 //! Test application that reproduces bug #4778.
8
9
10 #include <stdio.h>
11 #include <stdlib.h>
12 #include <string.h>
13
14 #include <OS.h>
15
16 #include <syscalls.h>
17
18
19 status_t
memory_eater(void *)20 memory_eater(void*)
21 {
22 size_t total = 0;
23
24 while (true) {
25 size_t size = rand() % 16384 + 8;
26 if (malloc(size) == NULL) {
27 printf("out of memory after having allocated %ld bytes\n", total);
28 break;
29 } else
30 total += size;
31
32 putchar('.');
33 }
34
35 return B_OK;
36 }
37
38
39 status_t
area_creator(void *)40 area_creator(void*)
41 {
42 while (true) {
43 status_t status = B_ERROR;
44 uint32 addressSpec = B_ANY_ADDRESS;
45 void* base;
46 bool readOnly = false;//(rand() % 256) > 127;
47 if (!readOnly) {
48 // reserve 128 MB of space for the area
49 base = (void*)0x60000000;
50 status = _kern_reserve_address_range((addr_t*)&base, B_BASE_ADDRESS,
51 128 * 1024 * 1024);
52 addressSpec = status == B_OK ? B_EXACT_ADDRESS : B_BASE_ADDRESS;
53 printf("\naddress spec = %lx, base %p (status %s)\n", addressSpec,
54 base, strerror(status));
55 }
56
57 area_id area = create_area(readOnly ? "read-only memory" : "r/w memory",
58 &base, addressSpec, B_PAGE_SIZE * 4, B_NO_LOCK,
59 B_READ_AREA | (readOnly ? 0 : B_WRITE_AREA));
60 if (area >= 0) {
61 printf("new %s area %ld at %p\n", readOnly ? "read-only" : "r/w",
62 area, base);
63 } else
64 break;
65
66 snooze(10000);
67 }
68
69 return B_OK;
70 }
71
72
73 int
main(int argc,char ** argv)74 main(int argc, char** argv)
75 {
76 thread_id eater = spawn_thread(&memory_eater, "memory eater",
77 B_NORMAL_PRIORITY, NULL);
78 resume_thread(eater);
79
80 thread_id creator = spawn_thread(&area_creator, "area creator",
81 B_NORMAL_PRIORITY, NULL);
82 resume_thread(creator);
83
84 object_wait_info waitInfos[2] = {
85 { eater, B_OBJECT_TYPE_THREAD, 0 },
86 { creator, B_OBJECT_TYPE_THREAD, 0 }
87 };
88 ssize_t which = wait_for_objects(waitInfos, 2);
89 printf("wait for objects: %ld\n", which);
90
91 debugger("Welcome to the land of tomorrow");
92 return 0;
93 }
94