mirror of
https://github.com/dolphin-emu/dolphin.git
synced 2025-07-22 13:49:53 -06:00
Replaced Common::Thread with a partial implementation of std::thread. (rvalue references are used if available, <thread> is used if possible) Eliminates the need to use dynamic memory allocation for threads, so it's impossible to forget to delete a thread or set a pointer to NULL. Enables use of type-safe thread functions, no need to cast to and from void*. I've made sure the code compiles in vs08 and tested the functionality of "StdThread.h" on Linux so I'm hoping everything will work :p. In the future "StdThread.h" can be removed (maybe when OS X ships with gcc 4.4 and vs2015 is released :p).
git-svn-id: https://dolphin-emu.googlecode.com/svn/trunk@6933 8ced0084-cf51-0410-be5f-012b33b47a6e
This commit is contained in:
Jordan Woyak
@ -845,6 +845,10 @@
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RelativePath=".\Src\stdafx.h"
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>
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</File>
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<File
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RelativePath=".\Src\StdThread.h"
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>
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</File>
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<File
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RelativePath=".\Src\StringUtil.cpp"
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>
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@ -322,6 +322,7 @@
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<ClInclude Include="Src\SDCardUtil.h" />
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<ClInclude Include="Src\Setup.h" />
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<ClInclude Include="Src\stdafx.h" />
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<ClInclude Include="Src\StdThread.h" />
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<ClInclude Include="Src\StringUtil.h" />
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<ClInclude Include="Src\svnrev.h" />
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<ClInclude Include="Src\svnrev_template.h" />
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298
Source/Core/Common/Src/StdThread.h
Normal file
298
Source/Core/Common/Src/StdThread.h
Normal file
@ -0,0 +1,298 @@
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#ifndef STD_THREAD_H_
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#define STD_THREAD_H_
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#define GCC_VER(x,y,z) ((x) * 10000 + (y) * 100 + (z))
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#define GCC_VERSION GCC_VER(__GNUC__, __GNUC_MINOR__, __GNUC_PATCHLEVEL__)
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#if GCC_VERSION >= GCC_VER(4,4,0) && __GXX_EXPERIMENTAL_CXX0X__
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// GCC 4.4 provides <thread>
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#include <thread>
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#else
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// partial std::thread implementation for win32/pthread
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#include <algorithm>
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#if (_MSC_VER >= 1600) || (GCC_VERSION >= GCC_VER(4,3,0) && __GXX_EXPERIMENTAL_CXX0X__)
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#define USE_RVALUE_REFERENCES
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#endif
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#if defined(_WIN32)
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// WIN32
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#define WIN32_LEAN_AND_MEAN
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#include <Windows.h>
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#if defined(_MSC_VER) && defined(_MT)
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// When linking with LIBCMT (the multithreaded C library), Microsoft recommends
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// using _beginthreadex instead of CreateThread.
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#define USE_BEGINTHREADEX
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#include <process.h>
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#endif
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#ifdef USE_BEGINTHREADEX
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#define THREAD_ID unsigned
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#define THREAD_RETURN unsigned __stdcall
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#else
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#define THREAD_ID DWORD
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#define THREAD_RETURN DWORD WINAPI
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#endif
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#define THREAD_HANDLE HANDLE
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#else
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// PTHREAD
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#include <unistd.h>
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#ifndef _POSIX_THREADS
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#error unsupported platform (no pthreads?)
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#endif
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#include <pthread.h>
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#define THREAD_ID pthread_t
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#define THREAD_HANDLE pthread_t
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#define THREAD_RETURN void*
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#endif
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namespace std
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{
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class thread
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{
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public:
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typedef THREAD_HANDLE native_handle_type;
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class id
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{
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friend class thread;
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public:
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id() : m_thread(0) {}
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id(THREAD_ID _id) : m_thread(_id) {}
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bool operator==(const id& rhs) const
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{
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return m_thread == rhs.m_thread;
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}
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bool operator!=(const id& rhs) const
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{
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return !(*this == rhs);
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}
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bool operator<(const id& rhs) const
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{
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return m_thread < rhs.m_thread;
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}
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private:
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THREAD_ID m_thread;
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};
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// no variadic template support in msvc
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//template <typename C, typename... A>
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//thread(C&& func, A&&... args);
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template <typename C>
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thread(C func)
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{
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StartThread(new Func<C>(func));
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}
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template <typename C, typename A>
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thread(C func, A arg)
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{
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StartThread(new FuncArg<C, A>(func, arg));
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}
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thread() /*= default;*/ {}
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#ifdef USE_RVALUE_REFERENCES
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thread(const thread&) /*= delete*/;
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thread(thread&& other)
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{
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#else
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thread(const thread& t)
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{
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// ugly const_cast to get around lack of rvalue references
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thread& other = const_cast<thread&>(t);
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#endif
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swap(other);
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}
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#ifdef USE_RVALUE_REFERENCES
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thread& operator=(const thread&) /*= delete*/;
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thread& operator=(thread&& other)
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{
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#else
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thread& operator=(const thread& t)
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{
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// ugly const_cast to get around lack of rvalue references
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thread& other = const_cast<thread&>(t);
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#endif
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if (joinable())
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detach();
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swap(other);
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return *this;
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}
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~thread()
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{
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if (joinable())
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detach();
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}
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bool joinable() const
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{
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return m_id != id();
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}
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id get_id() const
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{
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return m_id;
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}
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native_handle_type native_handle()
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{
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#ifdef _WIN32
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return m_handle;
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#else
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return m_id.m_thread;
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#endif
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}
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void join()
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{
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#ifdef _WIN32
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WaitForSingleObject(m_handle, INFINITE);
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detach();
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#else
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pthread_join(m_id.m_thread, NULL);
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m_id = id();
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#endif
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}
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void detach()
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{
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#ifdef _WIN32
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CloseHandle(m_handle);
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#else
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pthread_detach(m_id.m_thread);
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#endif
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m_id = id();
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}
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void swap(thread& other)
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{
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std::swap(m_id, other.m_id);
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#ifdef _WIN32
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std::swap(m_handle, other.m_handle);
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#endif
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}
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static unsigned hardware_concurrency()
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{
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#ifdef _WIN32
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SYSTEM_INFO sysinfo;
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GetSystemInfo(&sysinfo);
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return static_cast<unsigned>(sysinfo.dwNumberOfProcessors);
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#else
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return 0;
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#endif
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}
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private:
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id m_id;
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#ifdef _WIN32
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native_handle_type m_handle;
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#endif
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template <typename F>
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void StartThread(F* param)
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{
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#ifdef USE_BEGINTHREADEX
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m_handle = (HANDLE)_beginthreadex(NULL, 0, &RunAndDelete<F>, param, 0, &m_id.m_thread);
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#elif defined(_WIN32)
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m_handle = CreateThread(NULL, 0, &RunAndDelete<F>, param, 0, &m_id.m_thread);
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#else
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pthread_attr_t attr;
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pthread_attr_init(&attr);
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pthread_attr_setstacksize(&attr, 1024 * 1024);
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if (pthread_create(&m_id.m_thread, &attr, &RunAndDelete<F>, param))
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m_id = id();
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#endif
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}
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template <typename C>
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class Func
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{
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public:
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Func(C _func) : func(_func) {}
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void Run() { func(); }
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private:
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C const func;
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};
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template <typename C, typename A>
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class FuncArg
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{
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public:
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FuncArg(C _func, A _arg) : func(_func), arg(_arg) {}
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void Run() { func(arg); }
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private:
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C const func;
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A arg;
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};
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template <typename F>
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static THREAD_RETURN RunAndDelete(void* param)
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{
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static_cast<F*>(param)->Run();
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delete static_cast<F*>(param);
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return 0;
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}
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};
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namespace this_thread
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{
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inline void yield()
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{
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#ifdef _WIN32
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Sleep(1);
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#else
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usleep(1000 * 1);
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#endif
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}
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inline thread::id get_id()
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{
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#ifdef _WIN32
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return GetCurrentThreadId();
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#else
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return pthread_self();
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#endif
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}
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} // namespace this_thread
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} // namespace std
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#undef USE_RVALUE_REFERENCES
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#undef USE_BEGINTHREADEX
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#undef THREAD_ID
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#undef THREAD_RETURN
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#undef THREAD_HANDLE
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#endif
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#endif
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@ -25,18 +25,28 @@
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namespace Common
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{
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int Thread::CurrentId()
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{
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int CurrentThreadId()
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{
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#ifdef _WIN32
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return GetCurrentThreadId();
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return GetCurrentThreadId();
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#else
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return 0;
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return 0;
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#endif
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}
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}
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|
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#ifdef _WIN32
|
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|
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|
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void SetThreadAffinity(std::thread::native_handle_type thread, u32 mask)
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{
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SetThreadAffinityMask(thread, mask);
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}
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void SetCurrentThreadAffinity(u32 mask)
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{
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SetThreadAffinityMask(GetCurrentThread(), mask);
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}
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|
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CriticalSection::CriticalSection(int spincount)
|
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{
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if (spincount)
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@ -70,54 +80,6 @@ namespace Common
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LeaveCriticalSection(§ion);
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}
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Thread::Thread(ThreadFunc function, void* arg)
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: m_hThread(NULL), m_threadId(0)
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{
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#ifdef USE_BEGINTHREADEX
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m_hThread = (HANDLE)_beginthreadex(NULL, 0, function, arg, 0, &m_threadId);
|
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#else
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m_hThread = CreateThread(NULL, 0, function, arg, 0, &m_threadId);
|
||||
#endif
|
||||
}
|
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|
||||
Thread::~Thread()
|
||||
{
|
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WaitForDeath();
|
||||
}
|
||||
|
||||
DWORD Thread::WaitForDeath(const int iWait)
|
||||
{
|
||||
if (m_hThread)
|
||||
{
|
||||
DWORD Wait = WaitForSingleObject(m_hThread, iWait);
|
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CloseHandle(m_hThread);
|
||||
m_hThread = NULL;
|
||||
return Wait;
|
||||
}
|
||||
return NULL;
|
||||
}
|
||||
|
||||
void Thread::SetAffinity(int mask)
|
||||
{
|
||||
SetThreadAffinityMask(m_hThread, mask);
|
||||
}
|
||||
|
||||
void Thread::SetPriority(int priority)
|
||||
{
|
||||
SetThreadPriority(m_hThread, priority);
|
||||
}
|
||||
|
||||
void Thread::SetCurrentThreadAffinity(int mask)
|
||||
{
|
||||
SetThreadAffinityMask(GetCurrentThread(), mask);
|
||||
}
|
||||
|
||||
bool Thread::IsCurrentThread()
|
||||
{
|
||||
return GetCurrentThreadId() == m_threadId;
|
||||
}
|
||||
|
||||
|
||||
EventEx::EventEx()
|
||||
{
|
||||
InterlockedExchange(&m_Lock, 1);
|
||||
@ -300,7 +262,32 @@ namespace Common
|
||||
}
|
||||
|
||||
#else // !WIN32, so must be POSIX threads
|
||||
|
||||
|
||||
void LinuxSetThreadAffinity(pthread_t thread, u32 mask)
|
||||
{
|
||||
// This is non-standard
|
||||
#ifdef __linux__
|
||||
cpu_set_t cpu_set;
|
||||
CPU_ZERO(&cpu_set);
|
||||
|
||||
for (int i = 0; i != sizeof(mask) * 8; ++i)
|
||||
if ((mask >> i) & 1)
|
||||
CPU_SET(i, &cpu_set);
|
||||
|
||||
pthread_setaffinity_np(thread, sizeof(cpu_set), &cpu_set);
|
||||
#endif
|
||||
}
|
||||
|
||||
void SetThreadAffinity(std::thread::native_handle_type thread, u32 mask)
|
||||
{
|
||||
LinuxSetThreadAffinity(thread, mask);
|
||||
}
|
||||
|
||||
void SetCurrentThreadAffinity(u32 mask)
|
||||
{
|
||||
LinuxSetThreadAffinity(pthread_self(), mask);
|
||||
}
|
||||
|
||||
static pthread_key_t threadname_key;
|
||||
static pthread_once_t threadname_key_once = PTHREAD_ONCE_INIT;
|
||||
|
||||
@ -344,82 +331,6 @@ namespace Common
|
||||
pthread_mutex_unlock(&mutex);
|
||||
#endif
|
||||
}
|
||||
|
||||
|
||||
Thread::Thread(ThreadFunc function, void* arg)
|
||||
: thread_id(0)
|
||||
{
|
||||
pthread_attr_t attr;
|
||||
pthread_attr_init(&attr);
|
||||
pthread_attr_setstacksize(&attr, 1024 * 1024);
|
||||
int ret = pthread_create(&thread_id, &attr, function, arg);
|
||||
if (ret) ERROR_LOG(COMMON, "%s: pthread_create(%p, %p, %p, %p) failed: %s\n",
|
||||
__FUNCTION__, &thread_id, &attr, function, arg, strerror(ret));
|
||||
|
||||
INFO_LOG(COMMON, "created new thread %lu (func=%p, arg=%p)\n",
|
||||
(unsigned long)thread_id, function, arg);
|
||||
}
|
||||
|
||||
|
||||
Thread::~Thread()
|
||||
{
|
||||
WaitForDeath();
|
||||
}
|
||||
|
||||
|
||||
void Thread::WaitForDeath()
|
||||
{
|
||||
if (thread_id)
|
||||
{
|
||||
void* exit_status;
|
||||
int ret = pthread_join(thread_id, &exit_status);
|
||||
if (ret) ERROR_LOG(COMMON,
|
||||
"error joining thread %lu: %s\n",
|
||||
(unsigned long)thread_id, strerror(ret));
|
||||
if (exit_status)
|
||||
ERROR_LOG(COMMON,
|
||||
"thread %lu exited with status %d\n",
|
||||
(unsigned long)thread_id, *(int *)exit_status);
|
||||
thread_id = 0;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
void Thread::SetAffinity(int mask)
|
||||
{
|
||||
// This is non-standard
|
||||
#ifdef __linux__
|
||||
cpu_set_t cpu_set;
|
||||
CPU_ZERO(&cpu_set);
|
||||
|
||||
for (unsigned int i = 0; i < sizeof(mask) * 8; i++)
|
||||
{
|
||||
if ((mask >> i) & 1){CPU_SET(i, &cpu_set);}
|
||||
}
|
||||
|
||||
pthread_setaffinity_np(thread_id, sizeof(cpu_set), &cpu_set);
|
||||
#endif
|
||||
}
|
||||
|
||||
void Thread::SetCurrentThreadAffinity(int mask)
|
||||
{
|
||||
#ifdef __linux__
|
||||
cpu_set_t cpu_set;
|
||||
CPU_ZERO(&cpu_set);
|
||||
|
||||
for (size_t i = 0; i < sizeof(mask) * 8; i++)
|
||||
{
|
||||
if ((mask >> i) & 1){CPU_SET(i, &cpu_set);}
|
||||
}
|
||||
|
||||
pthread_setaffinity_np(pthread_self(), sizeof(cpu_set), &cpu_set);
|
||||
#endif
|
||||
}
|
||||
|
||||
bool Thread::IsCurrentThread()
|
||||
{
|
||||
return pthread_equal(pthread_self(), thread_id) != 0;
|
||||
}
|
||||
|
||||
void SleepCurrentThread(int ms)
|
||||
{
|
||||
|
||||
@ -18,37 +18,7 @@
|
||||
#ifndef _THREAD_H_
|
||||
#define _THREAD_H_
|
||||
|
||||
#ifdef _WIN32
|
||||
|
||||
#if defined(_MSC_VER) && defined(_MT)
|
||||
// When linking with LIBCMT (the multithreaded C library), Microsoft recommends
|
||||
// using _beginthreadex instead of CreateThread.
|
||||
#define USE_BEGINTHREADEX
|
||||
#endif
|
||||
|
||||
#define WIN32_LEAN_AND_MEAN
|
||||
#include <windows.h>
|
||||
|
||||
#ifdef USE_BEGINTHREADEX
|
||||
#define THREAD_RETURN unsigned __stdcall
|
||||
#else
|
||||
#define THREAD_RETURN DWORD WINAPI
|
||||
#endif
|
||||
|
||||
#else
|
||||
|
||||
#include <xmmintrin.h>
|
||||
#define THREAD_RETURN void*
|
||||
#include <unistd.h>
|
||||
#ifdef _POSIX_THREADS
|
||||
#include <pthread.h>
|
||||
#elif GEKKO
|
||||
#include <ogc/lwp_threads.h>
|
||||
#else
|
||||
#error unsupported platform (no pthreads?)
|
||||
#endif
|
||||
|
||||
#endif
|
||||
#include "StdThread.h"
|
||||
|
||||
// Don't include common.h here as it will break LogManager
|
||||
#include "CommonTypes.h"
|
||||
@ -61,6 +31,8 @@
|
||||
#define INFINITE 0xffffffff
|
||||
#endif
|
||||
|
||||
#include <xmmintrin.h>
|
||||
|
||||
//for gettimeofday and struct time(spec|val)
|
||||
#include <time.h>
|
||||
#include <sys/time.h>
|
||||
@ -69,6 +41,11 @@
|
||||
|
||||
namespace Common
|
||||
{
|
||||
|
||||
int CurrentThreadId();
|
||||
|
||||
void SetThreadAffinity(std::thread::native_handle_type thread, u32 mask);
|
||||
void SetCurrentThreadAffinity(u32 mask);
|
||||
|
||||
class CriticalSection
|
||||
{
|
||||
@ -88,57 +65,6 @@ namespace Common
|
||||
void Leave();
|
||||
};
|
||||
|
||||
#ifdef _WIN32
|
||||
|
||||
#ifdef USE_BEGINTHREADEX
|
||||
typedef unsigned (__stdcall *ThreadFunc)(void* arg);
|
||||
#else
|
||||
typedef DWORD (WINAPI *ThreadFunc)(void* arg);
|
||||
#endif
|
||||
|
||||
#else
|
||||
|
||||
typedef void* (*ThreadFunc)(void* arg);
|
||||
|
||||
#endif
|
||||
|
||||
class Thread
|
||||
{
|
||||
public:
|
||||
Thread(ThreadFunc entry, void* arg);
|
||||
~Thread();
|
||||
|
||||
void SetAffinity(int mask);
|
||||
static void SetCurrentThreadAffinity(int mask);
|
||||
static int CurrentId();
|
||||
bool IsCurrentThread();
|
||||
#ifdef _WIN32
|
||||
void SetPriority(int priority);
|
||||
DWORD WaitForDeath(const int iWait = INFINITE);
|
||||
#else
|
||||
void WaitForDeath();
|
||||
#endif
|
||||
|
||||
private:
|
||||
|
||||
#ifdef _WIN32
|
||||
|
||||
HANDLE m_hThread;
|
||||
#ifdef USE_BEGINTHREADEX
|
||||
unsigned m_threadId;
|
||||
#else
|
||||
DWORD m_threadId;
|
||||
#endif
|
||||
|
||||
#else
|
||||
|
||||
#ifdef _POSIX_THREADS
|
||||
pthread_t thread_id;
|
||||
#endif
|
||||
|
||||
#endif
|
||||
};
|
||||
|
||||
#ifdef _WIN32
|
||||
// Event(WaitForSingleObject) is too expensive
|
||||
// as it always enters Ring0 regardless of the state of lock
|
||||
|
||||
Reference in New Issue
Block a user