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
|
//===-- Signposts.cpp - Interval debug annotations ------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "llvm/Support/Signposts.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/Config/config.h"
#if LLVM_SUPPORT_XCODE_SIGNPOSTS
#include "llvm/ADT/DenseMap.h"
#include "llvm/Support/Mutex.h"
#include <Availability.h>
#include <os/signpost.h>
#endif // if LLVM_SUPPORT_XCODE_SIGNPOSTS
using namespace llvm;
#if LLVM_SUPPORT_XCODE_SIGNPOSTS
#define SIGNPOSTS_AVAILABLE() \
__builtin_available(macos 10.14, iOS 12, tvOS 12, watchOS 5, *)
namespace {
os_log_t *LogCreator() {
os_log_t *X = new os_log_t;
*X = os_log_create("org.llvm.signposts", "toolchain");
return X;
}
struct LogDeleter {
void operator()(os_log_t *X) const {
os_release(*X);
delete X;
}
};
} // end anonymous namespace
namespace llvm {
class SignpostEmitterImpl {
using LogPtrTy = std::unique_ptr<os_log_t, LogDeleter>;
using LogTy = LogPtrTy::element_type;
LogPtrTy SignpostLog;
DenseMap<const void *, os_signpost_id_t> Signposts;
sys::SmartMutex<true> Mutex;
LogTy &getLogger() const { return *SignpostLog; }
os_signpost_id_t getSignpostForObject(const void *O) {
sys::SmartScopedLock<true> Lock(Mutex);
const auto &I = Signposts.find(O);
if (I != Signposts.end())
return I->second;
os_signpost_id_t ID = {};
if (SIGNPOSTS_AVAILABLE()) {
ID = os_signpost_id_make_with_pointer(getLogger(), O);
}
const auto &Inserted = Signposts.insert(std::make_pair(O, ID));
return Inserted.first->second;
}
public:
SignpostEmitterImpl() : SignpostLog(LogCreator()) {}
bool isEnabled() const {
if (SIGNPOSTS_AVAILABLE())
return os_signpost_enabled(*SignpostLog);
return false;
}
void startInterval(const void *O, llvm::StringRef Name) {
if (isEnabled()) {
if (SIGNPOSTS_AVAILABLE()) {
// Both strings used here are required to be constant literal strings.
os_signpost_interval_begin(getLogger(), getSignpostForObject(O),
"LLVM Timers", "%s", Name.data());
}
}
}
void endInterval(const void *O, llvm::StringRef Name) {
if (isEnabled()) {
if (SIGNPOSTS_AVAILABLE()) {
// Both strings used here are required to be constant literal strings.
os_signpost_interval_end(getLogger(), getSignpostForObject(O),
"LLVM Timers", "");
}
}
}
};
} // end namespace llvm
#else
/// Definition necessary for use of std::unique_ptr in SignpostEmitter::Impl.
class llvm::SignpostEmitterImpl {};
#endif // if LLVM_SUPPORT_XCODE_SIGNPOSTS
#if LLVM_SUPPORT_XCODE_SIGNPOSTS
#define HAVE_ANY_SIGNPOST_IMPL 1
#else
#define HAVE_ANY_SIGNPOST_IMPL 0
#endif
SignpostEmitter::SignpostEmitter() {
#if HAVE_ANY_SIGNPOST_IMPL
Impl = std::make_unique<SignpostEmitterImpl>();
#endif // if !HAVE_ANY_SIGNPOST_IMPL
}
SignpostEmitter::~SignpostEmitter() = default;
bool SignpostEmitter::isEnabled() const {
#if HAVE_ANY_SIGNPOST_IMPL
return Impl->isEnabled();
#else
return false;
#endif // if !HAVE_ANY_SIGNPOST_IMPL
}
void SignpostEmitter::startInterval(const void *O, StringRef Name) {
#if HAVE_ANY_SIGNPOST_IMPL
if (Impl == nullptr)
return;
return Impl->startInterval(O, Name);
#endif // if !HAVE_ANY_SIGNPOST_IMPL
}
void SignpostEmitter::endInterval(const void *O, StringRef Name) {
#if HAVE_ANY_SIGNPOST_IMPL
if (Impl == nullptr)
return;
Impl->endInterval(O, Name);
#endif // if !HAVE_ANY_SIGNPOST_IMPL
}
|
