| 1 | // $Id$
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| 2 | // (C) Copyright Aaron W. LaFramboise, Roland Schwarz, Michael Glassford 2004.
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| 3 | // (C) Copyright 2007 Roland Schwarz
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| 4 | // (C) Copyright 2007 Anthony Williams
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| 5 | // (C) Copyright 2007 David Deakins
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| 6 | // Use, modification and distribution are subject to the
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| 7 | // Boost Software License, Version 1.0. (See accompanying file
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| 8 | // LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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| 9 |
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| 10 | #include <boost/detail/winapi/config.hpp>
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| 11 | #include <boost/thread/detail/config.hpp>
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| 12 |
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| 13 | #if defined(BOOST_HAS_WINTHREADS) && defined(BOOST_THREAD_BUILD_LIB)
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| 14 |
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| 15 | #if (defined(__MINGW32__) && !defined(_WIN64)) || defined(__MINGW64__) || (__MINGW64_VERSION_MAJOR)
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| 16 |
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| 17 | #include <boost/thread/detail/tss_hooks.hpp>
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| 18 |
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| 19 | #include <windows.h>
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| 20 |
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| 21 | #include <cstdlib>
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| 22 |
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| 23 | namespace boost
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| 24 | {
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| 25 | void tss_cleanup_implemented() {}
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| 26 | }
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| 27 |
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| 28 | namespace {
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| 29 | void NTAPI on_tls_callback(void* , DWORD dwReason, PVOID )
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| 30 | {
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| 31 | switch (dwReason)
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| 32 | {
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| 33 | case DLL_THREAD_DETACH:
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| 34 | {
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| 35 | boost::on_thread_exit();
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| 36 | break;
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| 37 | }
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| 38 | }
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| 39 | }
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| 40 | }
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| 41 |
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| 42 | #if defined(__MINGW64__) || (__MINGW64_VERSION_MAJOR) || (__MINGW32_MAJOR_VERSION >3) || \
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| 43 | ((__MINGW32_MAJOR_VERSION==3) && (__MINGW32_MINOR_VERSION>=18))
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| 44 | extern "C"
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| 45 | {
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| 46 | PIMAGE_TLS_CALLBACK __crt_xl_tls_callback__ __attribute__ ((section(".CRT$XLB"))) = on_tls_callback;
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| 47 | }
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| 48 | #else
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| 49 | extern "C" {
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| 50 |
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| 51 | void (* after_ctors )() __attribute__((section(".ctors"))) = boost::on_process_enter;
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| 52 | void (* before_dtors)() __attribute__((section(".dtors"))) = boost::on_thread_exit;
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| 53 | void (* after_dtors )() __attribute__((section(".dtors.zzz"))) = boost::on_process_exit;
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| 54 |
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| 55 | ULONG __tls_index__ = 0;
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| 56 | char __tls_end__ __attribute__((section(".tls$zzz"))) = 0;
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| 57 | char __tls_start__ __attribute__((section(".tls"))) = 0;
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| 58 |
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| 59 |
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| 60 | PIMAGE_TLS_CALLBACK __crt_xl_start__ __attribute__ ((section(".CRT$XLA"))) = 0;
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| 61 | PIMAGE_TLS_CALLBACK __crt_xl_end__ __attribute__ ((section(".CRT$XLZ"))) = 0;
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| 62 | }
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| 63 | extern "C" const IMAGE_TLS_DIRECTORY32 _tls_used __attribute__ ((section(".rdata$T"))) =
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| 64 | {
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| 65 | (DWORD) &__tls_start__,
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| 66 | (DWORD) &__tls_end__,
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| 67 | (DWORD) &__tls_index__,
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| 68 | (DWORD) (&__crt_xl_start__+1),
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| 69 | (DWORD) 0,
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| 70 | (DWORD) 0
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| 71 | };
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| 72 | #endif
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| 73 |
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| 74 |
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| 75 | #elif defined(_MSC_VER) && !defined(UNDER_CE)
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| 76 |
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| 77 | #include <boost/thread/detail/tss_hooks.hpp>
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| 78 |
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| 79 | #include <stdlib.h>
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| 80 |
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| 81 | #include <windows.h>
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| 82 |
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| 83 |
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| 84 | // _pRawDllMainOrig can be defined by including boost/thread/win32/mfc_thread_init.hpp
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| 85 | // into your dll; it ensures that MFC-Dll-initialization will be done properly
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| 86 | // The following code is adapted from the MFC-Dll-init code
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| 87 | /*
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| 88 | * _pRawDllMainOrig MUST be an extern const variable, which will be aliased to
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| 89 | * _pDefaultRawDllMainOrig if no real user definition is present, thanks to the
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| 90 | * alternatename directive.
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| 91 | */
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| 92 |
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| 93 | // work at least with _MSC_VER 1500 (MSVC++ 9.0, VS 2008)
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| 94 | #if (_MSC_VER >= 1500)
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| 95 |
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| 96 | extern "C" {
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| 97 | extern BOOL (WINAPI * const _pRawDllMainOrig)(HANDLE, DWORD, LPVOID);
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| 98 | extern BOOL (WINAPI * const _pDefaultRawDllMainOrig)(HANDLE, DWORD, LPVOID) = NULL;
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| 99 | #if defined (_M_IX86)
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| 100 | #pragma comment(linker, "/alternatename:__pRawDllMainOrig=__pDefaultRawDllMainOrig")
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| 101 | #elif defined (_M_X64) || defined (_M_ARM)
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| 102 | #pragma comment(linker, "/alternatename:_pRawDllMainOrig=_pDefaultRawDllMainOrig")
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| 103 | #else /* defined (_M_X64) || defined (_M_ARM) */
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| 104 | #error Unsupported platform
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| 105 | #endif /* defined (_M_X64) || defined (_M_ARM) */
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| 106 | }
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| 107 |
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| 108 | #endif
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| 109 |
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| 110 |
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| 111 |
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| 112 |
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| 113 | //Definitions required by implementation
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| 114 |
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| 115 | #if (_MSC_VER < 1300) || ((_MSC_VER > 1900) && (_MSC_VER < 1910)) // 1300 == VC++ 7.0, 1900 == VC++ 14.0, 1910 == VC++ 2017
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| 116 | typedef void ( __cdecl *_PVFV_ )();
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| 117 | typedef void ( __cdecl *_PIFV_ )();
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| 118 | #define INIRETSUCCESS_V
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| 119 | #define INIRETSUCCESS_I
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| 120 | #define PVAPI_V void __cdecl
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| 121 | #define PVAPI_I void __cdecl
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| 122 | #elif (_MSC_VER >= 1910)
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| 123 | typedef void ( __cdecl *_PVFV_ )();
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| 124 | typedef int ( __cdecl *_PIFV_ )();
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| 125 | #define INIRETSUCCESS_V
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| 126 | #define INIRETSUCCESS_I 0
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| 127 | #define PVAPI_V void __cdecl
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| 128 | #define PVAPI_I int __cdecl
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| 129 | #else
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| 130 | typedef int ( __cdecl *_PVFV_ )();
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| 131 | typedef int ( __cdecl *_PIFV_ )();
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| 132 | #define INIRETSUCCESS_V 0
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| 133 | #define INIRETSUCCESS_I 0
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| 134 | #define PVAPI_V int __cdecl
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| 135 | #define PVAPI_I int __cdecl
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| 136 | #endif
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| 137 |
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| 138 | typedef void (NTAPI* _TLSCB)(HINSTANCE, DWORD, PVOID);
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| 139 |
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| 140 | //Symbols for connection to the runtime environment
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| 141 |
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| 142 | extern "C"
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| 143 | {
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| 144 | extern DWORD _tls_used; //the tls directory (located in .rdata segment)
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| 145 | extern _TLSCB __xl_a[], __xl_z[]; //tls initializers */
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| 146 | }
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| 147 |
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| 148 | namespace
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| 149 | {
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| 150 | //Forward declarations
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| 151 |
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| 152 | static PVAPI_I on_tls_prepare();
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| 153 | static PVAPI_V on_process_init();
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| 154 | static PVAPI_V on_process_term();
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| 155 | static void NTAPI on_tls_callback(HINSTANCE, DWORD, PVOID);
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| 156 |
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| 157 | //The .CRT$Xxx information is taken from Codeguru:
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| 158 | //http://www.codeguru.com/Cpp/misc/misc/threadsprocesses/article.php/c6945__2/
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| 159 |
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| 160 | #if (_MSC_VER >= 1400)
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| 161 | #pragma section(".CRT$XIU",long,read)
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| 162 | #pragma section(".CRT$XCU",long,read)
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| 163 | #pragma section(".CRT$XTU",long,read)
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| 164 | #pragma section(".CRT$XLC",long,read)
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| 165 | __declspec(allocate(".CRT$XLC")) _TLSCB __xl_ca=on_tls_callback;
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| 166 | __declspec(allocate(".CRT$XIU"))_PIFV_ p_tls_prepare = on_tls_prepare;
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| 167 | __declspec(allocate(".CRT$XCU"))_PVFV_ p_process_init = on_process_init;
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| 168 | __declspec(allocate(".CRT$XTU"))_PVFV_ p_process_term = on_process_term;
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| 169 | #else
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| 170 | #if (_MSC_VER >= 1300) // 1300 == VC++ 7.0
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| 171 | # pragma data_seg(push, old_seg)
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| 172 | #endif
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| 173 | //Callback to run tls glue code first.
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| 174 | //I don't think it is necessary to run it
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| 175 | //at .CRT$XIB level, since we are only
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| 176 | //interested in thread detachement. But
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| 177 | //this could be changed easily if required.
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| 178 |
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| 179 | #pragma data_seg(".CRT$XIU")
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| 180 | static _PIFV_ p_tls_prepare = on_tls_prepare;
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| 181 | #pragma data_seg()
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| 182 |
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| 183 | //Callback after all global ctors.
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| 184 |
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| 185 | #pragma data_seg(".CRT$XCU")
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| 186 | static _PVFV_ p_process_init = on_process_init;
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| 187 | #pragma data_seg()
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| 188 |
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| 189 | //Callback for tls notifications.
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| 190 |
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| 191 | #pragma data_seg(".CRT$XLB")
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| 192 | _TLSCB p_thread_callback = on_tls_callback;
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| 193 | #pragma data_seg()
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| 194 | //Callback for termination.
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| 195 |
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| 196 | #pragma data_seg(".CRT$XTU")
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| 197 | static _PVFV_ p_process_term = on_process_term;
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| 198 | #pragma data_seg()
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| 199 | #if (_MSC_VER >= 1300) // 1300 == VC++ 7.0
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| 200 | # pragma data_seg(pop, old_seg)
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| 201 | #endif
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| 202 | #endif
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| 203 |
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| 204 | #ifdef BOOST_MSVC
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| 205 | #pragma warning(push)
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| 206 | #pragma warning(disable:4189)
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| 207 | #endif
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| 208 |
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| 209 | PVAPI_I on_tls_prepare()
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| 210 | {
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| 211 | //The following line has an important side effect:
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| 212 | //if the TLS directory is not already there, it will
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| 213 | //be created by the linker. In other words, it forces a tls
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| 214 | //directory to be generated by the linker even when static tls
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| 215 | //(i.e. __declspec(thread)) is not used.
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| 216 | //The volatile should prevent the optimizer
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| 217 | //from removing the reference.
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| 218 |
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| 219 | DWORD volatile dw = _tls_used;
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| 220 |
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| 221 | #if (_MSC_VER < 1300) // 1300 == VC++ 7.0
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| 222 | _TLSCB* pfbegin = __xl_a;
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| 223 | _TLSCB* pfend = __xl_z;
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| 224 | _TLSCB* pfdst = pfbegin;
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| 225 | //pfdst = (_TLSCB*)_tls_used.AddressOfCallBacks;
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| 226 |
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| 227 | //The following loop will merge the address pointers
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| 228 | //into a contiguous area, since the tlssup code seems
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| 229 | //to require this (at least on MSVC 6)
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| 230 |
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| 231 | while (pfbegin < pfend)
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| 232 | {
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| 233 | if (*pfbegin != 0)
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| 234 | {
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| 235 | *pfdst = *pfbegin;
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| 236 | ++pfdst;
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| 237 | }
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| 238 | ++pfbegin;
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| 239 | }
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| 240 |
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| 241 | *pfdst = 0;
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| 242 | #endif
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| 243 |
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| 244 | return INIRETSUCCESS_I;
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| 245 | }
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| 246 | #ifdef BOOST_MSVC
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| 247 | #pragma warning(pop)
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| 248 | #endif
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| 249 |
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| 250 | PVAPI_V on_process_init()
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| 251 | {
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| 252 | //Schedule on_thread_exit() to be called for the main
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| 253 | //thread before destructors of global objects have been
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| 254 | //called.
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| 255 |
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| 256 | //It will not be run when 'quick' exiting the
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| 257 | //library; however, this is the standard behaviour
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| 258 | //for destructors of global objects, so that
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| 259 | //shouldn't be a problem.
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| 260 |
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| 261 | atexit(boost::on_thread_exit);
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| 262 |
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| 263 | //Call Boost process entry callback here
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| 264 |
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| 265 | boost::on_process_enter();
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| 266 |
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| 267 | return INIRETSUCCESS_V;
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| 268 | }
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| 269 |
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| 270 | PVAPI_V on_process_term()
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| 271 | {
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| 272 | boost::on_process_exit();
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| 273 | return INIRETSUCCESS_V;
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| 274 | }
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| 275 |
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| 276 | void NTAPI on_tls_callback(HINSTANCE /*h*/, DWORD dwReason, PVOID /*pv*/)
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| 277 | {
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| 278 | switch (dwReason)
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| 279 | {
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| 280 | case DLL_THREAD_DETACH:
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| 281 | boost::on_thread_exit();
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| 282 | break;
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| 283 | }
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| 284 | }
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| 285 |
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| 286 | #if (_MSC_VER >= 1500)
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| 287 | BOOL WINAPI dll_callback(HANDLE hInstance, DWORD dwReason, LPVOID lpReserved)
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| 288 | #else
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| 289 | BOOL WINAPI dll_callback(HANDLE, DWORD dwReason, LPVOID)
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| 290 | #endif
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| 291 | {
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| 292 | switch (dwReason)
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| 293 | {
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| 294 | case DLL_THREAD_DETACH:
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| 295 | boost::on_thread_exit();
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| 296 | break;
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| 297 | case DLL_PROCESS_DETACH:
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| 298 | boost::on_process_exit();
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| 299 | break;
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| 300 | }
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| 301 |
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| 302 | #if (_MSC_VER >= 1500)
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| 303 | if( _pRawDllMainOrig )
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| 304 | {
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| 305 | return _pRawDllMainOrig(hInstance, dwReason, lpReserved);
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| 306 | }
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| 307 | #endif
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| 308 | return true;
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| 309 | }
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| 310 | } //namespace
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| 311 |
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| 312 | extern "C"
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| 313 | {
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| 314 | extern BOOL (WINAPI * const _pRawDllMain)(HANDLE, DWORD, LPVOID)=&dll_callback;
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| 315 | }
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| 316 | namespace boost
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| 317 | {
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| 318 | void tss_cleanup_implemented()
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| 319 | {
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| 320 | /*
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| 321 | This function's sole purpose is to cause a link error in cases where
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| 322 | automatic tss cleanup is not implemented by Boost.Threads as a
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| 323 | reminder that user code is responsible for calling the necessary
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| 324 | functions at the appropriate times (and for implementing an a
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| 325 | tss_cleanup_implemented() function to eliminate the linker's
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| 326 | missing symbol error).
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| 327 |
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| 328 | If Boost.Threads later implements automatic tss cleanup in cases
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| 329 | where it currently doesn't (which is the plan), the duplicate
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| 330 | symbol error will warn the user that their custom solution is no
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| 331 | longer needed and can be removed.
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| 332 | */
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| 333 | }
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| 334 | }
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| 335 |
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| 336 | #endif //defined(_MSC_VER) && !defined(UNDER_CE)
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| 337 |
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| 338 | #endif //defined(BOOST_HAS_WINTHREADS) && defined(BOOST_THREAD_BUILD_LIB)
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