blob: 1b32549be87f3db151903f4712882157ddcace18 (
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
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
|
// license:GPL-2.0+
// copyright-holders:Couriersud
/*
* palloc.c
*
*/
#include "pexception.h"
#include "pfmtlog.h"
#include <cfenv>
#include <iostream>
#if (defined(__x86_64__) || defined(__i386__)) && defined(__linux__)
#define HAS_FEENABLE_EXCEPT (1)
#else
#define HAS_FEENABLE_EXCEPT (0)
#endif
namespace plib {
//============================================================
// terminate
//============================================================
void terminate(const pstring &msg) noexcept
{
std::cerr << msg.c_str() << "\n";
std::terminate();
}
//============================================================
// Exceptions
//============================================================
pexception::pexception(const pstring &text)
: m_text(text)
{
}
file_e::file_e(const pstring &fmt, const pstring &filename)
: pexception(pfmt(fmt)(filename))
{
}
file_open_e::file_open_e(const pstring &filename)
: file_e("File open failed: {}", filename)
{
}
file_read_e::file_read_e(const pstring &filename)
: file_e("File read failed: {}", filename)
{
}
file_write_e::file_write_e(const pstring &filename)
: file_e("File write failed: {}", filename)
{
}
null_argument_e::null_argument_e(const pstring &argument)
: pexception(pfmt("Null argument passed: {}")(argument))
{
}
out_of_mem_e::out_of_mem_e(const pstring &location)
: pexception(pfmt("Out of memory: {}")(location))
{
}
fpexception_e::fpexception_e(const pstring &text)
: pexception(pfmt("Exception error: {}")(text))
{
}
bool fpsignalenabler::m_enable = false;
fpsignalenabler::fpsignalenabler(unsigned fpexceptions)
{
#if HAS_FEENABLE_EXCEPT
if (m_enable)
{
int b = 0;
if (fpexceptions & plib::FP_INEXACT) b = b | FE_INEXACT;
if (fpexceptions & plib::FP_DIVBYZERO) b = b | FE_DIVBYZERO;
if (fpexceptions & plib::FP_UNDERFLOW) b = b | FE_UNDERFLOW;
if (fpexceptions & plib::FP_OVERFLOW) b = b | FE_OVERFLOW;
if (fpexceptions & plib::FP_INVALID) b = b | FE_INVALID;
m_last_enabled = feenableexcept(b);
}
#else
m_last_enabled = 0;
#endif
}
fpsignalenabler::~fpsignalenabler()
{
#if HAS_FEENABLE_EXCEPT
if (m_enable)
{
fedisableexcept(FE_ALL_EXCEPT); // Enable all floating point exceptions but FE_INEXACT
feenableexcept(m_last_enabled); // Enable all floating point exceptions but FE_INEXACT
}
#endif
}
bool fpsignalenabler::supported()
{
return true;
}
bool fpsignalenabler::global_enable(bool enable)
{
bool old = m_enable;
m_enable = enable;
return old;
}
} // namespace plib
|