ppsspp/Common/Thread.cpp
2013-09-27 16:47:21 +02:00

192 lines
4.4 KiB
C++

// Copyright (C) 2003 Dolphin Project.
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, version 2.0 or later versions.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License 2.0 for more details.
// A copy of the GPL 2.0 should have been included with the program.
// If not, see http://www.gnu.org/licenses/
// Official SVN repository and contact information can be found at
// http://code.google.com/p/dolphin-emu/
#include "Thread.h"
#include "Common.h"
#ifdef __APPLE__
#include <mach/mach.h>
#elif defined BSD4_4
#include <pthread_np.h>
#endif
#ifdef USE_BEGINTHREADEX
#include <process.h>
#endif
namespace Common
{
int CurrentThreadId()
{
#ifdef _WIN32
return GetCurrentThreadId();
#elif defined __APPLE__
return mach_thread_self();
#else
return 0;
#endif
}
#ifdef _WIN32
void SetThreadAffinity(std::thread::native_handle_type thread, u32 mask)
{
SetThreadAffinityMask(thread, mask);
}
void SetCurrentThreadAffinity(u32 mask)
{
SetThreadAffinityMask(GetCurrentThread(), mask);
}
// Supporting functions
void SleepCurrentThread(int ms)
{
Sleep(ms);
}
void SwitchCurrentThread()
{
SwitchToThread();
}
// Sets the debugger-visible name of the current thread.
// Uses undocumented (actually, it is now documented) trick.
// http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vsdebug/html/vxtsksettingthreadname.asp
// This is implemented much nicer in upcoming msvc++, see:
// http://msdn.microsoft.com/en-us/library/xcb2z8hs(VS.100).aspx
void SetCurrentThreadName(const char* szThreadName)
{
static const DWORD MS_VC_EXCEPTION = 0x406D1388;
#pragma pack(push,8)
struct THREADNAME_INFO
{
DWORD dwType; // must be 0x1000
LPCSTR szName; // pointer to name (in user addr space)
DWORD dwThreadID; // thread ID (-1=caller thread)
DWORD dwFlags; // reserved for future use, must be zero
} info;
#pragma pack(pop)
info.dwType = 0x1000;
info.szName = szThreadName;
info.dwThreadID = -1; //dwThreadID;
info.dwFlags = 0;
__try
{
RaiseException(MS_VC_EXCEPTION, 0, sizeof(info)/sizeof(ULONG_PTR), (ULONG_PTR*)&info);
}
__except(EXCEPTION_CONTINUE_EXECUTION)
{}
}
void EnableCrashingOnCrashes()
{
typedef BOOL (WINAPI *tGetPolicy)(LPDWORD lpFlags);
typedef BOOL (WINAPI *tSetPolicy)(DWORD dwFlags);
const DWORD EXCEPTION_SWALLOWING = 0x1;
HMODULE kernel32 = LoadLibraryA("kernel32.dll");
tGetPolicy pGetPolicy = (tGetPolicy)GetProcAddress(kernel32,
"GetProcessUserModeExceptionPolicy");
tSetPolicy pSetPolicy = (tSetPolicy)GetProcAddress(kernel32,
"SetProcessUserModeExceptionPolicy");
if (pGetPolicy && pSetPolicy)
{
DWORD dwFlags;
if (pGetPolicy(&dwFlags))
{
// Turn off the filter
pSetPolicy(dwFlags & ~EXCEPTION_SWALLOWING);
}
}
}
#else // !WIN32, so must be POSIX threads
void SetThreadAffinity(std::thread::native_handle_type thread, u32 mask)
{
#ifdef __APPLE__
thread_policy_set(pthread_mach_thread_np(thread),
THREAD_AFFINITY_POLICY, (integer_t *)&mask, 1);
#elif (defined __linux__ || defined BSD4_4) && !defined(ANDROID)
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 SetCurrentThreadAffinity(u32 mask)
{
SetThreadAffinity(pthread_self(), mask);
}
static pthread_key_t threadname_key;
static pthread_once_t threadname_key_once = PTHREAD_ONCE_INIT;
void SleepCurrentThread(int ms)
{
usleep(1000 * ms);
}
void SwitchCurrentThread()
{
usleep(1000 * 1);
}
static void FreeThreadName(void* threadname)
{
free(threadname);
}
static void ThreadnameKeyAlloc()
{
pthread_key_create(&threadname_key, FreeThreadName);
}
void SetCurrentThreadName(const char* szThreadName)
{
pthread_once(&threadname_key_once, ThreadnameKeyAlloc);
void* threadname;
if ((threadname = pthread_getspecific(threadname_key)) != NULL)
free(threadname);
pthread_setspecific(threadname_key, strdup(szThreadName));
INFO_LOG(COMMON, "%s(%s)\n", __FUNCTION__, szThreadName);
}
void EnableCrashingOnCrashes()
{
}
#endif
} // namespace Common