blob: c5f3dfe4e12695ca1e94f5e325c8af1477540f3e (
plain)
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
|
//
// Copyright(c) 2014 The ANGLE Project Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//
// global_state.cpp : Implements functions for querying the thread-local GL and EGL state.
#include "libGLESv2/global_state.h"
#include "common/debug.h"
#include "common/platform.h"
#include "common/tls.h"
#include "libANGLE/Thread.h"
namespace gl
{
Context *GetGlobalContext()
{
egl::Thread *thread = egl::GetCurrentThread();
return thread->getContext();
}
Context *GetValidGlobalContext()
{
egl::Thread *thread = egl::GetCurrentThread();
return thread->getValidContext();
}
} // namespace gl
namespace egl
{
namespace
{
static TLSIndex threadTLS = TLS_INVALID_INDEX;
Thread *AllocateCurrentThread()
{
ASSERT(threadTLS != TLS_INVALID_INDEX);
if (threadTLS == TLS_INVALID_INDEX)
{
return nullptr;
}
Thread *thread = new Thread();
if (!SetTLSValue(threadTLS, thread))
{
ERR() << "Could not set thread local storage.";
return nullptr;
}
return thread;
}
} // anonymous namespace
Thread *GetCurrentThread()
{
// Create a TLS index if one has not been created for this DLL
if (threadTLS == TLS_INVALID_INDEX)
{
threadTLS = CreateTLSIndex();
}
Thread *current = static_cast<Thread *>(GetTLSValue(threadTLS));
// ANGLE issue 488: when the dll is loaded after thread initialization,
// thread local storage (current) might not exist yet.
return (current ? current : AllocateCurrentThread());
}
} // namespace egl
#ifdef ANGLE_PLATFORM_WINDOWS
namespace egl
{
namespace
{
bool DeallocateCurrentThread()
{
Thread *thread = static_cast<Thread *>(GetTLSValue(threadTLS));
SafeDelete(thread);
return SetTLSValue(threadTLS, nullptr);
}
bool InitializeProcess()
{
threadTLS = CreateTLSIndex();
if (threadTLS == TLS_INVALID_INDEX)
{
return false;
}
return AllocateCurrentThread() != nullptr;
}
bool TerminateProcess()
{
if (!DeallocateCurrentThread())
{
return false;
}
if (threadTLS != TLS_INVALID_INDEX)
{
TLSIndex tlsCopy = threadTLS;
threadTLS = TLS_INVALID_INDEX;
if (!DestroyTLSIndex(tlsCopy))
{
return false;
}
}
return true;
}
} // anonymous namespace
} // namespace egl
extern "C" BOOL WINAPI DllMain(HINSTANCE, DWORD reason, LPVOID)
{
switch (reason)
{
case DLL_PROCESS_ATTACH:
return static_cast<BOOL>(egl::InitializeProcess());
case DLL_THREAD_ATTACH:
return static_cast<BOOL>(egl::AllocateCurrentThread() != nullptr);
case DLL_THREAD_DETACH:
return static_cast<BOOL>(egl::DeallocateCurrentThread());
case DLL_PROCESS_DETACH:
return static_cast<BOOL>(egl::TerminateProcess());
}
return TRUE;
}
#endif // ANGLE_PLATFORM_WINDOWS
|
