blob: 97523c7cb8e4134af4ea84a03b1822f4468a1a6d (
plain) (
blame)
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
|
#ifndef APOS_ASSERT_H
#define APOS_ASSERT_H
/**
* @file assert.h
* Assertions. Note that contrary to how assertios usually function, apos has
* three different levels of assertions: Catastrophic, hard and soft.
*
* Soft assertions merely warn about something that might cause issues, but let
* the execution continue normally.
*
* Hard assertions warn about the assertion not holding and returns from the
* function.
*
* Catastrophic assertions warn about the assertion and crash the kernel.
*/
#include <apos/debug.h>
#include <apos/utils.h>
/* TODO: should this exit or do something explosive like that? */
#if !defined(DNDEBUG)
/**
* The kernel is in an irrepairable state, just give up.
*
* @param x Condition to check for.
*/
#define catastrophic_assert(x) \
do { \
if (unlikely(!(x))) { \
error("catastrophic assertion failed: " QUOTE(x) "\n"); \
while (1) { \
} \
} \
} while (0);
/**
* The function cannot continue without this assertion, but doesn't necessarily
* mean that the kernel is borked.
*
* @warning Implicit return.
*
* @param x Condition to check for.
* @param r Return value on failed check.
*/
#define hard_assert(x, r) \
{ \
if (unlikely(!(x))) { \
warn("hard assertion failed: " QUOTE(x) "\n"); \
return r; \
} \
}
/**
* Unexpected case, but not likely to cause problems, likely a bug.
*
* @param x Condition to check for.
*/
#define soft_assert(x) \
do { \
if (unlikely(!(x))) { \
info("soft assertion failed: " QUOTE(x) "\n"); \
} \
} while (0);
#else
#define catastrophic_assert(x)
#define hard_assert(x, r)
#define soft_assert(x)
#endif
/**
* Use when return value doesn't exist.
*
* Example:
* @code{.c}
* void func() { hard_assert(x, RETURN_VOID); }
* @endcode
*/
#define RETURN_VOID
#endif /* APOS_ASSERT_H */
|
