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
|
//===- Error.cpp ----------------------------------------------------------===//
//
// The LLVM Linker
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "Error.h"
#include "Config.h"
#include "llvm/ADT/Twine.h"
#include "llvm/Support/Error.h"
#include "llvm/Support/ManagedStatic.h"
#include "llvm/Support/Process.h"
#include "llvm/Support/raw_ostream.h"
#include <mutex>
#if !defined(_MSC_VER) && !defined(__MINGW32__)
#include <unistd.h>
#endif
using namespace llvm;
namespace lld {
// The functions defined in this file can be called from multiple threads,
// but outs() or errs() are not thread-safe. We protect them using a mutex.
static std::mutex Mu;
namespace coff {
uint64_t ErrorCount;
raw_ostream *ErrorOS;
static LLVM_ATTRIBUTE_NORETURN void exitLld(int Val) {
// Dealloc/destroy ManagedStatic variables before calling
// _exit(). In a non-LTO build, this is a nop. In an LTO
// build allows us to get the output of -time-passes.
llvm_shutdown();
outs().flush();
errs().flush();
_exit(Val);
}
static void print(StringRef S, raw_ostream::Colors C) {
*ErrorOS << Config->Argv[0] << ": ";
if (Config->ColorDiagnostics) {
ErrorOS->changeColor(C, true);
*ErrorOS << S;
ErrorOS->resetColor();
} else {
*ErrorOS << S;
}
}
void log(const Twine &Msg) {
if (Config->Verbose) {
std::lock_guard<std::mutex> Lock(Mu);
outs() << Config->Argv[0] << ": " << Msg << "\n";
outs().flush();
}
}
void message(const Twine &Msg) {
std::lock_guard<std::mutex> Lock(Mu);
outs() << Msg << "\n";
outs().flush();
}
void error(const Twine &Msg) {
std::lock_guard<std::mutex> Lock(Mu);
if (Config->ErrorLimit == 0 || ErrorCount < Config->ErrorLimit) {
print("error: ", raw_ostream::RED);
*ErrorOS << Msg << "\n";
} else if (ErrorCount == Config->ErrorLimit) {
print("error: ", raw_ostream::RED);
*ErrorOS << "too many errors emitted, stopping now"
<< " (use /ERRORLIMIT:0 to see all errors)\n";
exitLld(1);
}
++ErrorCount;
}
void fatal(const Twine &Msg) {
if (Config->ColorDiagnostics) {
errs().changeColor(raw_ostream::RED, /*bold=*/true);
errs() << "error: ";
errs().resetColor();
} else {
errs() << "error: ";
}
errs() << Msg << "\n";
exitLld(1);
}
void fatal(std::error_code EC, const Twine &Msg) {
fatal(Msg + ": " + EC.message());
}
void fatal(llvm::Error &Err, const Twine &Msg) {
fatal(errorToErrorCode(std::move(Err)), Msg);
}
void warn(const Twine &Msg) {
std::lock_guard<std::mutex> Lock(Mu);
print("warning: ", raw_ostream::MAGENTA);
*ErrorOS << Msg << "\n";
}
} // namespace coff
} // namespace lld
|
