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
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
|
/************************************************************************************
Filename : Logging_Tools.cpp
Content : Tools for Logging
Created : Oct 26, 2015
Authors : Chris Taylor
Copyright : Copyright (c) Facebook Technologies, LLC and its affiliates. All rights reserved.
Licensed under the Oculus Master SDK License Version 1.0 (the "License");
you may not use the Oculus VR Rift SDK except in compliance with the License,
which is provided at the time of installation or download, or which
otherwise accompanies this software in either electronic or hard copy form.
You may obtain a copy of the License at
https://developer.oculus.com/licenses/oculusmastersdk-1.0
Unless required by applicable law or agreed to in writing, the Oculus VR SDK
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
************************************************************************************/
#ifdef _MSC_VER
#pragma warning(disable : 4530) // C++ exception handler used, but unwind semantics are not enabled
#endif
#include "Logging/Logging_Tools.h"
#include <assert.h>
#include <time.h>
#if defined(__APPLE__)
#include <libproc.h>
#include <sys/sysctl.h>
#include <unistd.h>
#include <locale>
#endif
namespace ovrlog {
#if defined(_WIN32)
//-----------------------------------------------------------------------------
// Terminator
Terminator::Terminator() : Terminated(false), TerminateEvent() {}
Terminator::~Terminator() {}
bool Terminator::Initialize() {
Terminated = false;
if (TerminateEvent.IsValid()) {
::ResetEvent(TerminateEvent.Get());
return true;
}
TerminateEvent = ::CreateEventW(nullptr, TRUE, FALSE, nullptr);
return TerminateEvent.IsValid();
}
void Terminator::Terminate() {
Terminated = true;
if (TerminateEvent.IsValid()) {
::SetEvent(TerminateEvent.Get());
}
}
// Returns true if the event signaled and false on termination.
bool Terminator::WaitOn(OvrLogHandle hEvent, uint32_t timeoutMsec) {
if (Terminated || !TerminateEvent.IsValid())
return false;
HANDLE events[2] = {hEvent, TerminateEvent.Get()};
DWORD result = ::WaitForMultipleObjects(2, events, FALSE, timeoutMsec);
if (Terminated)
return false;
if (result == WAIT_TIMEOUT)
return false;
if (result == WAIT_OBJECT_0)
return true;
return false;
}
// Returns true if the sleep interval exceeded or false on termination.
bool Terminator::WaitSleep(int milliseconds) {
if (Terminated || !TerminateEvent.IsValid())
return false;
::WaitForSingleObject(TerminateEvent.Get(), milliseconds); // Ignore return value
return !Terminated;
}
#endif // defined(_WIN32)
//-----------------------------------------------------------------------------
// Lock
Lock::Lock()
:
#if defined(_WIN32)
cs {
}
#else
m()
#endif
{
#if defined(_WIN32)
static const DWORD kSpinCount = 1000;
::InitializeCriticalSectionAndSpinCount(&cs, kSpinCount);
#endif
}
Lock::~Lock() {
#if defined(_WIN32)
::DeleteCriticalSection(&cs);
#endif
}
bool Lock::TryEnter() {
#if defined(_WIN32)
return ::TryEnterCriticalSection(&cs) != FALSE;
#else
return m.try_lock();
#endif
}
void Lock::Enter() {
#if defined(_WIN32)
::EnterCriticalSection(&cs);
#else
m.lock();
#endif
}
void Lock::Leave() {
#if defined(_WIN32)
::LeaveCriticalSection(&cs);
#else
m.unlock();
#endif
}
//-----------------------------------------------------------------------------
// Locker
Locker::Locker(Lock* lock) : TheLock(lock) {
if (TheLock)
TheLock->Enter();
}
Locker::Locker(Lock& lock) : TheLock(&lock) {
if (TheLock)
TheLock->Enter();
}
Locker::~Locker() {
Clear();
}
bool Locker::TrySet(Lock* lock) {
Clear();
if (!lock || !lock->TryEnter())
return false;
TheLock = lock;
return true;
}
bool Locker::TrySet(Lock& lock) {
return TrySet(&lock);
}
void Locker::Set(Lock* lock) {
Clear();
if (lock) {
lock->Enter();
TheLock = lock;
}
}
void Locker::Set(Lock& lock) {
return Set(&lock);
}
void Locker::Clear() {
if (TheLock) {
TheLock->Leave();
TheLock = nullptr;
}
}
#if defined(_WIN32)
//-----------------------------------------------------------------------------
// AutoHandle
AutoHandle::AutoHandle(OvrLogHandle handle) : TheHandle(handle) {}
AutoHandle::~AutoHandle() {
Clear();
}
void AutoHandle::operator=(OvrLogHandle handle) {
Clear();
TheHandle = handle;
}
void AutoHandle::Clear() {
if (TheHandle) {
::CloseHandle(TheHandle);
TheHandle = nullptr;
}
}
#endif // defined(_WIN32)
//-----------------------------------------------------------------------------
// Tools
bool IsDebuggerAttached() {
#if defined(_WIN32)
return ::IsDebuggerPresent() != FALSE;
#elif defined(__APPLE__)
int mib[4] = {CTL_KERN, KERN_PROC, KERN_PROC_PID, getpid()};
struct kinfo_proc info;
size_t size = sizeof(info);
info.kp_proc.p_flag = 0;
sysctl(mib, sizeof(mib) / sizeof(*mib), &info, &size, nullptr, 0);
return ((info.kp_proc.p_flag & P_TRACED) != 0);
#elif defined(PT_TRACE_ME) && !defined(__android__)
return (ptrace(PT_TRACE_ME, 0, 1, 0) < 0);
#else
// We have some platform-specific code elsewhere.
return false;
#endif
}
} // namespace ovrlog
#ifdef OVR_STRINGIZE
#error "This code must remain independent of LibOVR"
#endif
|
