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
131
132
133
134
135
136
137
138
|
// errors.h -- handle errors for gold -*- C++ -*-
// Copyright (C) 2006-2014 Free Software Foundation, Inc.
// Written by Ian Lance Taylor <iant@google.com>.
// This file is part of gold.
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 3 of the License, or
// (at your option) any later version.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
// MA 02110-1301, USA.
#ifndef GOLD_ERRORS_H
#define GOLD_ERRORS_H
#include <cstdarg>
#include "gold-threads.h"
namespace gold
{
class Symbol;
template<int size, bool big_endian>
struct Relocate_info;
// This class handles errors for gold. There is a single instance
// which is used by all threads. If and when we make the gold code
// more amenable to being used in a library, we will make this an
// abstract interface class, and expect the caller to provide their
// own instantiation.
class Errors
{
public:
Errors(const char* program_name);
// Report a fatal error. After printing the error, this must exit.
void
fatal(const char* format, va_list) ATTRIBUTE_NORETURN;
// Report a fallback error. After printing the error, this must exit
// with a special status code indicating that fallback to
// --incremental-full is required.
void
fallback(const char* format, va_list) ATTRIBUTE_NORETURN;
// Report an error and continue.
void
error(const char* format, va_list);
// Report a warning and continue.
void
warning(const char* format, va_list);
// Print an informational message and continue.
void
info(const char* format, va_list);
// Report an error at a reloc location.
template<int size, bool big_endian>
void
error_at_location(const Relocate_info<size, big_endian>* relinfo,
size_t relnum, off_t reloffset,
const char* format, va_list);
// Report a warning at a reloc location.
template<int size, bool big_endian>
void
warning_at_location(const Relocate_info<size, big_endian>* relinfo,
size_t relnum, off_t reloffset,
const char* format, va_list);
// Issue an undefined symbol error. LOCATION is the location of
// the error (typically an object file name or relocation info).
void
undefined_symbol(const Symbol* sym, const std::string& location);
// Report a debugging message.
void
debug(const char* format, ...) ATTRIBUTE_PRINTF_2;
// Return the number of errors.
int
error_count() const
{ return this->error_count_; }
// Return the number of warnings.
int
warning_count() const
{ return this->warning_count_; }
private:
Errors(const Errors&);
Errors& operator=(const Errors&);
// Initialize the lock. We don't do this in the constructor because
// lock initialization wants to know whether we are using threads or
// not. This returns true if the lock is now initialized.
bool
initialize_lock();
// Increment a counter, holding the lock.
void
increment_counter(int*);
// The number of times we report an undefined symbol.
static const int max_undefined_error_report = 5;
// The name of the program.
const char* program_name_;
// This class can be accessed from multiple threads. This lock is
// used to control access to the data structures.
Lock* lock_;
// Used to initialize the lock_ field exactly once.
Initialize_lock initialize_lock_;
// Numbers of errors reported.
int error_count_;
// Number of warnings reported.
int warning_count_;
// A map counting the numbers of times we have seen an undefined
// symbol.
Unordered_map<const Symbol*, int> undefined_symbols_;
};
} // End namespace gold.
#endif // !defined(GOLD_ERRORS_H)
|
