827 lines
28 KiB
C++
827 lines
28 KiB
C++
#include "Threads/WCThreadSafe.h"
|
|
#include <glib.h>
|
|
|
|
#if XPLATFORMTHREADS_WINDOWS
|
|
#define _WIN32_WINNT 0x0500 // need at least Windows2000 (for TryEnterCriticalSection() and SignalObjectAndWait()
|
|
#include "IncludeWindows.h"
|
|
#include <process.h>
|
|
#endif // XPLATFORMTHREADS_WINDOWS
|
|
|
|
|
|
#if defined(__APPLE__)
|
|
#include <CoreServices/CoreServices.h>
|
|
#include <stdio.h>
|
|
#endif // __APPLE__
|
|
|
|
#if XPLATFORMTHREADS_POSIX
|
|
#include </usr/include/unistd.h> // avoid the framework version and use the /usr/include version
|
|
#include <pthread.h>
|
|
#include <sched.h>
|
|
#include <sys/time.h>
|
|
#include <errno.h>
|
|
#include <signal.h>
|
|
// We do this externs because <stdio.h> comes from MSL
|
|
extern "C" FILE *popen(const char *command, const char *type);
|
|
extern "C" int pclose(FILE *stream);
|
|
static int (*BSDfread)( void *, size_t, size_t, FILE * ) = 0;
|
|
|
|
#include <string.h>
|
|
|
|
#endif //XPLATFORMTHREADS_POSIX
|
|
|
|
namespace wvNS {
|
|
static const unsigned int knMicrosecondsPerSecond = 1000*1000;
|
|
static const unsigned int knNanosecondsPerMicrosecond = 1000;
|
|
static const unsigned int knNanosecondsPerSecond = knMicrosecondsPerSecond*knNanosecondsPerMicrosecond;
|
|
|
|
namespace wvThread
|
|
{
|
|
|
|
//--------------------------------------------------------------------------------
|
|
static inline bool EnsureThreadingInitialized()
|
|
{
|
|
bool bRetval = true;
|
|
|
|
return bRetval;
|
|
}
|
|
//--------------------------------------------------------------------------------
|
|
|
|
|
|
|
|
|
|
//--------------------------------------------------------------------------------
|
|
static uint32_t CalculateTicksPerMicrosecond();
|
|
static uint32_t CalculateTicksPerMicrosecond()
|
|
{
|
|
uint32_t nTicksPerMicrosecond=0;
|
|
#if defined(_WIN32)
|
|
LARGE_INTEGER TSC;
|
|
::QueryPerformanceFrequency(&TSC);
|
|
nTicksPerMicrosecond = uint32_t (TSC.QuadPart / knMicrosecondsPerSecond);
|
|
#elif defined(__linux__) && defined(__i386__)
|
|
static const timediff sktd_TSC_MeasurementPeriod = 40*1000; // delay for CalculateTicksPerMicrosecond() to measure the TSC frequency
|
|
uint64_t Tstart, Tend;
|
|
timeval tvtmp, tvstart, tvend;
|
|
|
|
//--------------------- begin measurement code
|
|
// poll to align to a tick of gettimeofday
|
|
::gettimeofday(&tvtmp,0);
|
|
do {
|
|
::gettimeofday(&tvstart,0);
|
|
__asm__ __volatile__ (".byte 0x0f, 0x31" : "=A" (Tstart)); // RDTSC
|
|
} while (tvtmp.tv_usec!=tvstart.tv_usec);
|
|
// delay some
|
|
::usleep(sktd_TSC_MeasurementPeriod);
|
|
//
|
|
::gettimeofday(&tvtmp,0);
|
|
do {
|
|
::gettimeofday(&tvend,0);
|
|
__asm__ __volatile__ (".byte 0x0f, 0x31" : "=A" (Tend)); // RDTSC
|
|
} while (tvtmp.tv_usec!=tvend.tv_usec);
|
|
//--------------------- end measurement code
|
|
|
|
suseconds_t elapsed_usec = (tvend.tv_sec-tvstart.tv_sec)*knMicrosecondsPerSecond + (tvend.tv_usec-tvstart.tv_usec);
|
|
uint64_t elapsed_ticks = Tend-Tstart;
|
|
nTicksPerMicrosecond = uint32_t (elapsed_ticks/elapsed_usec);
|
|
#endif
|
|
return nTicksPerMicrosecond;
|
|
}
|
|
|
|
#if defined(__APPLE__) //&& !defined(__MACH__)
|
|
|
|
|
|
bool FindNetInterfaceByIPAddress(const char *sIP, char *sInterface) // sIP and sInterface are both char[16]
|
|
{
|
|
FILE *fProcess , *pSubcall;
|
|
char sLine[256]="", *pToken, sCommand[150];
|
|
bool res = false;
|
|
int iret;
|
|
|
|
fProcess = popen("ifconfig -l inet", "r");
|
|
if (fProcess)
|
|
{
|
|
memset(sInterface, '\0', 16);
|
|
iret = BSDfread(sLine, sizeof(char), sizeof(sLine), fProcess);
|
|
pToken = strtok(sLine, " ");
|
|
while (pToken)
|
|
{
|
|
sprintf(sCommand, "ifconfig %s | grep \"inet %s \"", pToken, sIP);
|
|
|
|
pSubcall = popen(sCommand, "r");
|
|
if (pSubcall)
|
|
{
|
|
char sSubline[100]="";
|
|
if (BSDfread(sSubline, sizeof(char), sizeof(sSubline), pSubcall))
|
|
{
|
|
// found
|
|
strcpy(sInterface, pToken);
|
|
res = true;
|
|
pclose(pSubcall);
|
|
break;
|
|
}
|
|
}
|
|
pclose(pSubcall);
|
|
pToken = strtok(NULL, " ");
|
|
}
|
|
|
|
}
|
|
pclose(fProcess);
|
|
|
|
return res;
|
|
}
|
|
#endif // MACOS
|
|
|
|
timestamp now(void)
|
|
{
|
|
EnsureThreadingInitialized();
|
|
static const uint32_t nTicksPerMicrosecond = CalculateTicksPerMicrosecond();
|
|
#if defined(_WIN32)
|
|
if (nTicksPerMicrosecond)
|
|
{
|
|
LARGE_INTEGER TSC;
|
|
::QueryPerformanceCounter(&TSC);
|
|
return timestamp(uint32_t(TSC.QuadPart/nTicksPerMicrosecond));
|
|
}
|
|
else return timestamp(0);
|
|
#elif defined(__APPLE__)
|
|
if (nTicksPerMicrosecond) {} // prevent 'unused' warnings
|
|
UnsignedWide usecs;
|
|
::Microseconds(&usecs);
|
|
return timestamp(usecs.lo);
|
|
#elif defined(__linux__) && defined(__i386__) && defined(__gnu_linux__)
|
|
uint64_t TSC;
|
|
__asm__ __volatile__ (".byte 0x0f, 0x31" : "=A" (TSC)); // RDTSC
|
|
return timestamp(TSC/nTicksPerMicrosecond);
|
|
#elif defined(__linux__) && defined(__PPC__) && defined(__gnu_linux__)
|
|
#warning need to implement maybe
|
|
#else
|
|
#error Dont know how to get microseconds timer !
|
|
#endif // defined(_WIN32)
|
|
}
|
|
|
|
|
|
void sleep_milliseconds(unsigned int nMillisecs)
|
|
{
|
|
EnsureThreadingInitialized();
|
|
#if XPLATFORMTHREADS_WINDOWS
|
|
::Sleep(nMillisecs);
|
|
#elif XPLATFORMTHREADS_POSIX
|
|
::usleep(nMillisecs*1000);
|
|
#else
|
|
#error Not implemented for your OS
|
|
#endif
|
|
}
|
|
|
|
|
|
#if XPLATFORMTHREADS_WINDOWS
|
|
inline DWORD win32_milliseconds(timediff td) { return (td+499)/1000; }
|
|
#endif
|
|
|
|
void sleep(timediff _td)
|
|
{
|
|
if (_td>0)
|
|
{
|
|
EnsureThreadingInitialized();
|
|
#if XPLATFORMTHREADS_WINDOWS
|
|
::Sleep(win32_milliseconds(_td)); // This is the best we can do in windows
|
|
#elif XPLATFORMTHREADS_POSIX
|
|
::usleep(_td);
|
|
#else
|
|
#error Not implemented for your OS
|
|
#endif
|
|
}
|
|
}
|
|
|
|
|
|
#if XPLATFORMTHREADS_WINDOWS
|
|
void yield() { ::Sleep(0); }
|
|
#elif XPLATFORMTHREADS_POSIX
|
|
void yield() { ::sched_yield(); }
|
|
#endif
|
|
|
|
|
|
|
|
|
|
class ThreadMutexInited::OSDependentMutex : public noncopyableobject
|
|
{
|
|
#if defined (XPLATFORMTHREADS_WINDOWS)
|
|
protected:
|
|
CRITICAL_SECTION m_critsec;
|
|
public:
|
|
|
|
inline OSDependentMutex() { EnsureThreadingInitialized(); ::InitializeCriticalSection(&m_critsec); }
|
|
inline ~OSDependentMutex() { EnsureThreadingInitialized(); ::DeleteCriticalSection (&m_critsec); }
|
|
inline void obtain() { EnsureThreadingInitialized(); ::EnterCriticalSection (&m_critsec); }
|
|
inline void release() { EnsureThreadingInitialized(); ::LeaveCriticalSection (&m_critsec); }
|
|
inline bool tryobtain() { EnsureThreadingInitialized(); return TryEnterCriticalSection(&m_critsec)!=FALSE; }
|
|
|
|
#elif defined (XPLATFORMTHREADS_POSIX)
|
|
protected:
|
|
pthread_mutex_t m_ptmutex;
|
|
public:
|
|
inline OSDependentMutex()
|
|
{
|
|
EnsureThreadingInitialized();
|
|
pthread_mutexattr_t attr;
|
|
pthread_mutexattr_init(&attr);
|
|
pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE);
|
|
::pthread_mutex_init (&m_ptmutex, &attr);
|
|
}
|
|
inline ~OSDependentMutex() { EnsureThreadingInitialized(); ::pthread_mutex_destroy(&m_ptmutex); }
|
|
inline void obtain() { EnsureThreadingInitialized(); ::pthread_mutex_lock (&m_ptmutex); }
|
|
inline void release() { EnsureThreadingInitialized(); ::pthread_mutex_unlock (&m_ptmutex); }
|
|
inline bool tryobtain() { EnsureThreadingInitialized(); return ::pthread_mutex_trylock(&m_ptmutex)!=EBUSY; }
|
|
|
|
#endif
|
|
};
|
|
|
|
ThreadMutexInited::ThreadMutexInited() :
|
|
m_osdmutex(0) {}
|
|
|
|
void ThreadMutexInited::init()
|
|
{
|
|
if (! is_init())
|
|
{
|
|
m_osdmutex = new OSDependentMutex;
|
|
}
|
|
}
|
|
|
|
void ThreadMutexInited::uninit()
|
|
{
|
|
if (is_init())
|
|
{
|
|
delete m_osdmutex;
|
|
m_osdmutex = 0;
|
|
}
|
|
}
|
|
|
|
ThreadMutexInited::~ThreadMutexInited()
|
|
{
|
|
uninit();
|
|
}
|
|
|
|
void ThreadMutexInited::obtain()
|
|
{
|
|
if (is_init())
|
|
{
|
|
m_osdmutex->obtain();
|
|
}
|
|
}
|
|
|
|
void ThreadMutexInited::release()
|
|
{
|
|
if (is_init())
|
|
{
|
|
m_osdmutex->release();
|
|
}
|
|
}
|
|
|
|
bool ThreadMutexInited::tryobtain()
|
|
{
|
|
bool retVal = true;
|
|
if (is_init())
|
|
{
|
|
retVal = m_osdmutex->tryobtain();
|
|
}
|
|
return retVal;
|
|
}
|
|
|
|
class ThreadConditionSignal::OSDependentObject : public noncopyableobject
|
|
{
|
|
#if defined (XPLATFORMTHREADS_POSIX)
|
|
|
|
protected:
|
|
pthread_cond_t m_ptcond;
|
|
pthread_mutex_t m_ptmutex;
|
|
public:
|
|
inline OSDependentObject()
|
|
{
|
|
EnsureThreadingInitialized();
|
|
::pthread_mutex_init(&m_ptmutex,0);
|
|
::pthread_cond_init(&m_ptcond, 0);
|
|
}
|
|
inline ~OSDependentObject() { ::pthread_cond_destroy(&m_ptcond), ::pthread_mutex_destroy(&m_ptmutex); }
|
|
inline void signal_unicast() { ::pthread_cond_signal(&m_ptcond); }
|
|
inline void signal_broadcast() { ::pthread_cond_broadcast(&m_ptcond); }
|
|
inline void await_signal() { ::pthread_cond_wait(&m_ptcond, &m_ptmutex); }
|
|
inline bool await_signal(timediff td)
|
|
{
|
|
timespec tspecDeadline;
|
|
timeval tvNow;
|
|
::gettimeofday(&tvNow,0);
|
|
tspecDeadline.tv_nsec = (tvNow.tv_usec + td%knMicrosecondsPerSecond)*knNanosecondsPerMicrosecond;
|
|
tspecDeadline.tv_sec = tvNow.tv_sec + td/knMicrosecondsPerSecond;
|
|
if (!(tspecDeadline.tv_nsec < suseconds_t(knNanosecondsPerSecond)))
|
|
++tspecDeadline.tv_sec, tspecDeadline.tv_nsec-=knNanosecondsPerSecond;
|
|
return ::pthread_cond_timedwait(&m_ptcond, &m_ptmutex, &tspecDeadline) != ETIMEDOUT;
|
|
}
|
|
|
|
void obtain_mutex() { ::pthread_mutex_lock(&m_ptmutex); }
|
|
bool tryobtain_mutex() { return ::pthread_mutex_trylock(&m_ptmutex)!=EBUSY; }
|
|
void release_mutex() { ::pthread_mutex_unlock(&m_ptmutex); }
|
|
|
|
|
|
#elif XPLATFORMTHREADS_WINDOWS
|
|
protected:
|
|
unsigned int m_nWaiterCount;
|
|
CRITICAL_SECTION m_csectWaiterCount;
|
|
|
|
HANDLE m_hndSemaphoreSignaller; // We keep this semaphore always at 0 count (non-signalled). We use it to release a controlled number of threads.
|
|
HANDLE m_hndEventAllWaitersReleased; // auto-reset
|
|
HANDLE m_hndMutex; // the mutex associated with the condition
|
|
bool m_bBroadcastSignalled; // means that the last waiter must signal m_hndEventAllWaitersReleased when done waiting
|
|
|
|
protected:
|
|
// - - - - - - - - - - - - - - - - - - - - - - - -
|
|
bool await_signal_win32(DWORD dwTimeout)
|
|
{
|
|
::EnterCriticalSection(&m_csectWaiterCount);
|
|
++m_nWaiterCount;
|
|
::LeaveCriticalSection(&m_csectWaiterCount);
|
|
// This is the actual wait for the signal
|
|
bool bWaitSucceeded = ::SignalObjectAndWait(m_hndMutex, m_hndSemaphoreSignaller, dwTimeout, FALSE) == WAIT_OBJECT_0;
|
|
//
|
|
::EnterCriticalSection(&m_csectWaiterCount);
|
|
bool bLastWaiter = --m_nWaiterCount==0 && m_bBroadcastSignalled;
|
|
::LeaveCriticalSection(&m_csectWaiterCount);
|
|
|
|
// re-acquire the mutex
|
|
if (bLastWaiter)
|
|
::SignalObjectAndWait(m_hndEventAllWaitersReleased, m_hndMutex, INFINITE, FALSE);
|
|
else
|
|
::WaitForSingleObject(m_hndMutex, INFINITE);
|
|
return bWaitSucceeded;
|
|
}
|
|
|
|
|
|
public:
|
|
|
|
inline bool await_signal(timediff td) { return await_signal_win32((win32_milliseconds(td))); }
|
|
inline void await_signal() { await_signal_win32(INFINITE); }
|
|
|
|
OSDependentObject() : m_nWaiterCount(0), m_bBroadcastSignalled(false)
|
|
{
|
|
EnsureThreadingInitialized();
|
|
::InitializeCriticalSection(&m_csectWaiterCount);
|
|
m_hndEventAllWaitersReleased = ::CreateEvent(
|
|
0, // security
|
|
FALSE, // auto-reset
|
|
FALSE, // initial state non-sognalled
|
|
0); // name
|
|
m_hndSemaphoreSignaller = ::CreateSemaphore(
|
|
0, // security
|
|
0, // initial count (and will stay this way)
|
|
0x100000, // maximum count (should be as large as the maximum number of waiting threads)
|
|
0); // name
|
|
m_hndMutex = ::CreateMutex(
|
|
0, // security
|
|
FALSE, // not owned initially
|
|
0); // name
|
|
//if (m_hndEventAllWaitersReleased==INVALID_HANDLE_VALUE || m_hndSemaphoreSignaller==INVALID_HANDLE_VALUE)
|
|
// throw something();
|
|
}
|
|
|
|
~OSDependentObject()
|
|
{
|
|
::CloseHandle(m_hndMutex);
|
|
::CloseHandle(m_hndSemaphoreSignaller);
|
|
::CloseHandle(m_hndEventAllWaitersReleased);
|
|
::DeleteCriticalSection(&m_csectWaiterCount);
|
|
}
|
|
|
|
inline void signal_unicast()
|
|
{
|
|
::EnterCriticalSection(&m_csectWaiterCount);
|
|
unsigned int nWaiters = m_nWaiterCount;
|
|
::LeaveCriticalSection(&m_csectWaiterCount);
|
|
if (nWaiters)
|
|
::ReleaseSemaphore(m_hndSemaphoreSignaller, 1, 0); // release 1 semaphore credit to release one waiting thread
|
|
}
|
|
|
|
void signal_broadcast()
|
|
{
|
|
::EnterCriticalSection(&m_csectWaiterCount);
|
|
unsigned int nWaiters = m_nWaiterCount;
|
|
if (nWaiters)
|
|
{
|
|
m_bBroadcastSignalled = true;
|
|
::ReleaseSemaphore(m_hndSemaphoreSignaller, nWaiters, 0); // release as many credits as there are waiting threads
|
|
::LeaveCriticalSection(&m_csectWaiterCount);
|
|
::WaitForSingleObject(m_hndEventAllWaitersReleased, INFINITE);
|
|
// at this point all threads are waiting on m_hndMutex, which would be released outside this function call
|
|
m_bBroadcastSignalled = false;
|
|
}
|
|
else
|
|
// no one is waiting
|
|
::LeaveCriticalSection(&m_csectWaiterCount);
|
|
}
|
|
//------------------------------------------------
|
|
inline void obtain_mutex() { ::WaitForSingleObject(m_hndMutex, INFINITE); }
|
|
inline bool tryobtain_mutex() { return ::WaitForSingleObject(m_hndMutex,0) == WAIT_OBJECT_0; }
|
|
inline void release_mutex() { ::ReleaseMutex(m_hndMutex); }
|
|
//------------------------------------------------
|
|
#endif // OS switch
|
|
};
|
|
|
|
void ThreadConditionSignal::obtain_mutex()
|
|
{
|
|
m_osdepobj.obtain_mutex();
|
|
}
|
|
bool ThreadConditionSignal::tryobtain_mutex() { return m_osdepobj.tryobtain_mutex(); }
|
|
void ThreadConditionSignal::release_mutex()
|
|
{
|
|
m_osdepobj.release_mutex();
|
|
}
|
|
|
|
void ThreadConditionSignal::await_condition() { m_osdepobj.await_signal(); }
|
|
bool ThreadConditionSignal::await_condition(timediff tdTimeout) { return m_osdepobj.await_signal(tdTimeout); }
|
|
void ThreadConditionSignal::signal_condition_single() { m_osdepobj.signal_unicast(); }
|
|
void ThreadConditionSignal::signal_condition_broadcast() { m_osdepobj.signal_broadcast(); }
|
|
|
|
ThreadConditionSignal::ThreadConditionSignal() : m_osdepobj(*new OSDependentObject) {}
|
|
ThreadConditionSignal::~ThreadConditionSignal() { delete &m_osdepobj; }
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
#if XPLATFORMTHREADS_POSIX
|
|
namespace // anon
|
|
{
|
|
inline int max_FIFO_schedparam()
|
|
{
|
|
static const int max_priority = ::sched_get_priority_max(SCHED_FIFO);
|
|
return max_priority;
|
|
}
|
|
inline int schedparam_by_percentage(unsigned short percentage)
|
|
{
|
|
return (max_FIFO_schedparam()*10*percentage+500)/1000;
|
|
}
|
|
class POSIXThreadPriority
|
|
{
|
|
public:
|
|
int m_SchedPolicy;
|
|
int m_SchedPriority;
|
|
POSIXThreadPriority(ThreadPriority pri)
|
|
{
|
|
switch (pri)
|
|
{
|
|
case ThreadPriority::TimeCritical: m_SchedPolicy=SCHED_FIFO, m_SchedPriority=schedparam_by_percentage(80); break;
|
|
case ThreadPriority::AboveNormal: m_SchedPolicy=SCHED_FIFO, m_SchedPriority=schedparam_by_percentage(20); break;
|
|
case ThreadPriority::BelowNormal: // fall through to normal; nothing is below normal in POSIX
|
|
case ThreadPriority::Normal: // fall through to default
|
|
default: m_SchedPolicy=SCHED_OTHER, m_SchedPriority=0; break;
|
|
}
|
|
}
|
|
};
|
|
|
|
} // namespace anonymous
|
|
#endif // XPLATFORMTHREADS_POSIX
|
|
|
|
#if XPLATFORMTHREADS_WINDOWS
|
|
namespace // anon
|
|
{
|
|
inline int WinThreadPriority(ThreadPriority pri)
|
|
{
|
|
switch (pri)
|
|
{
|
|
case ThreadPriority::BelowNormal: return THREAD_PRIORITY_BELOW_NORMAL;
|
|
case ThreadPriority::AboveNormal: return THREAD_PRIORITY_ABOVE_NORMAL;
|
|
case ThreadPriority::TimeCritical: return THREAD_PRIORITY_TIME_CRITICAL;
|
|
case ThreadPriority::Normal: // fall through to default
|
|
default: return THREAD_PRIORITY_NORMAL;
|
|
}
|
|
}
|
|
} // namespace anon
|
|
#endif // XPLATFORMTHREADS_WINDOWS
|
|
|
|
|
|
|
|
void SetMyThreadPriority(ThreadPriority pri)
|
|
{
|
|
#if XPLATFORMTHREADS_WINDOWS
|
|
::SetThreadPriority(::GetCurrentThread(), WinThreadPriority(pri));
|
|
#endif // XPLATFORMTHREADS_WINDOWS
|
|
#if XPLATFORMTHREADS_POSIX
|
|
const POSIXThreadPriority posixpri(pri);
|
|
sched_param sparam;
|
|
::memset(&sparam, 0, sizeof(sparam));
|
|
sparam.sched_priority = posixpri.m_SchedPriority;
|
|
#if defined(__linux__)
|
|
::sched_setscheduler(0, posixpri.m_SchedPolicy, &sparam); // linux uses this function instead of pthread_
|
|
#else
|
|
pthread_setschedparam(pthread_self(), posixpri.m_SchedPolicy, &sparam);
|
|
#endif
|
|
#endif // XPLATFORMTHREADS_POSIX
|
|
}
|
|
|
|
|
|
struct ThreadWrapperData
|
|
{
|
|
ThreadFunction *func;
|
|
ThreadFunctionArgument arg;
|
|
};
|
|
|
|
#if XPLATFORMTHREADS_WINDOWS
|
|
static unsigned int __stdcall ThreadWrapper(void * arg)
|
|
{
|
|
register ThreadWrapperData *twd = reinterpret_cast<ThreadWrapperData*>(arg);
|
|
ThreadFunction *func=twd->func;
|
|
ThreadFunctionArgument farg=twd->arg;
|
|
delete twd;
|
|
return DWORD(func(farg));
|
|
}
|
|
#elif XPLATFORMTHREADS_POSIX
|
|
static void * ThreadWrapper(void *arg)
|
|
{
|
|
register ThreadWrapperData *twd = reinterpret_cast<ThreadWrapperData*>(arg);
|
|
ThreadFunction *func=twd->func;
|
|
ThreadFunctionArgument farg=twd->arg;
|
|
delete twd;
|
|
return reinterpret_cast<void*>(func(farg));
|
|
}
|
|
typedef void*(ThreadWrapperFunction)(void*);
|
|
|
|
static ThreadWrapperFunction *ThunkedThreadWrapper = ThreadWrapper;
|
|
|
|
#endif // OS switch
|
|
|
|
|
|
|
|
|
|
|
|
class ThreadHandle::OSDependent
|
|
{
|
|
public:
|
|
static void StartThread(ThreadWrapperData *, ThreadHandle &, ThreadPriority);
|
|
static bool KillThread(ThreadHandle);
|
|
static bool JoinThread(ThreadHandle, ThreadFunctionReturnType*);
|
|
static void Close(ThreadHandle);
|
|
#if XPLATFORMTHREADS_WINDOWS
|
|
static inline uintptr_t from_oshandle(HANDLE h) { return reinterpret_cast<uintptr_t>(h); }
|
|
static inline HANDLE to_oshandle(uintptr_t h) { return reinterpret_cast<HANDLE>(h); }
|
|
#elif XPLATFORMTHREADS_POSIX
|
|
static inline uintptr_t from_oshandle(pthread_t pt) { return uintptr_t(pt); }
|
|
static inline pthread_t to_oshandle(uintptr_t h) { return pthread_t(h); }
|
|
#endif // OS switch
|
|
};
|
|
|
|
#if XPLATFORMTHREADS_WINDOWS
|
|
const ThreadHandle ThreadHandle::Invalid(OSDependent::from_oshandle(INVALID_HANDLE_VALUE));
|
|
#elif XPLATFORMTHREADS_POSIX
|
|
const ThreadHandle ThreadHandle::Invalid(OSDependent::from_oshandle(0));
|
|
#endif // OS switch
|
|
|
|
inline void ThreadHandle::OSDependent::StartThread(ThreadWrapperData *ptwdata, ThreadHandle &th, ThreadPriority pri)
|
|
{
|
|
#if XPLATFORMTHREADS_WINDOWS
|
|
uintptr_t h = ::_beginthreadex(
|
|
0, // no security attributes, not inheritable
|
|
0, // default stack size
|
|
ThreadWrapper, // function to call
|
|
(void*)(ptwdata), // argument for function
|
|
0, // creation flags
|
|
0 // where to store thread ID
|
|
);
|
|
|
|
if (h)
|
|
{
|
|
th.m_oshandle = h;
|
|
if (pri!=ThreadPriority::Normal)
|
|
::SetThreadPriority(to_oshandle(h), WinThreadPriority(pri));
|
|
}
|
|
else
|
|
th=Invalid;
|
|
#elif XPLATFORMTHREADS_POSIX
|
|
pthread_attr_t my_thread_attr, *pmy_thread_attr = 0;
|
|
sched_param my_schedparam;
|
|
|
|
if (pri!=ThreadPriority::Normal)
|
|
{
|
|
pmy_thread_attr = &my_thread_attr;
|
|
|
|
const POSIXThreadPriority posixpriority(pri);
|
|
int result;
|
|
result = pthread_attr_init (pmy_thread_attr);
|
|
result = pthread_attr_setschedpolicy(pmy_thread_attr, posixpriority.m_SchedPolicy);
|
|
|
|
memset(&my_schedparam, 0, sizeof(my_schedparam));
|
|
my_schedparam.sched_priority = posixpriority.m_SchedPriority;
|
|
result = pthread_attr_setschedparam(pmy_thread_attr, &my_schedparam);
|
|
}
|
|
|
|
pthread_t pt;
|
|
int anyerr = pthread_create(
|
|
&pt, // variable for thread handle
|
|
pmy_thread_attr, // default attributes
|
|
ThunkedThreadWrapper,
|
|
ptwdata
|
|
);
|
|
|
|
if (anyerr)
|
|
th=Invalid;
|
|
else
|
|
th.m_oshandle = OSDependent::from_oshandle(pt);
|
|
#endif
|
|
}
|
|
|
|
inline bool ThreadHandle::OSDependent::KillThread(ThreadHandle h)
|
|
{
|
|
#if XPLATFORMTHREADS_WINDOWS
|
|
return ::TerminateThread(to_oshandle(h.m_oshandle), (DWORD)-1) != 0;
|
|
#elif XPLATFORMTHREADS_POSIX
|
|
return pthread_cancel(to_oshandle(h.m_oshandle)) == 0;
|
|
#endif
|
|
}
|
|
|
|
bool ThreadHandle::OSDependent::JoinThread(ThreadHandle h, ThreadFunctionReturnType *pretval)
|
|
{
|
|
#if XPLATFORMTHREADS_WINDOWS
|
|
const bool kbReturnedOk = (WAIT_OBJECT_0 == ::WaitForSingleObject(OSDependent::to_oshandle(h.m_oshandle), INFINITE));
|
|
if (kbReturnedOk && pretval)
|
|
{
|
|
DWORD dwExitCode;
|
|
::GetExitCodeThread(to_oshandle(h.m_oshandle), &dwExitCode);
|
|
*pretval = (ThreadFunctionReturnType)(dwExitCode);
|
|
}
|
|
return kbReturnedOk;
|
|
#endif
|
|
#if XPLATFORMTHREADS_POSIX
|
|
ThreadFunctionReturnType ptrExitCode = 0;
|
|
int join_return_code = pthread_join(to_oshandle(h.m_oshandle), (void**)ptrExitCode);
|
|
const bool kbReturnedOk = (0 == join_return_code);
|
|
if (0 != pretval)
|
|
{
|
|
*pretval = ptrExitCode;
|
|
}
|
|
return kbReturnedOk;
|
|
#endif
|
|
}
|
|
|
|
#if XPLATFORMTHREADS_WINDOWS
|
|
inline void ThreadHandle::OSDependent::Close(ThreadHandle h)
|
|
{
|
|
::CloseHandle(OSDependent::to_oshandle(h.m_oshandle));
|
|
}
|
|
#endif // XPLATFORMTHREADS_WINDOWS
|
|
#if XPLATFORMTHREADS_POSIX
|
|
inline void ThreadHandle::OSDependent::Close(ThreadHandle) {}
|
|
#endif // XPLATFORMTHREADS_POSIX
|
|
|
|
//**********************************************************************************************
|
|
|
|
class WCThreadRef::OSDependent
|
|
{
|
|
public:
|
|
static void GetCurrentThreadRef(WCThreadRef& tid);
|
|
#if XPLATFORMTHREADS_WINDOWS
|
|
static inline uintptr_t from_os(DWORD thread_id) { return (uintptr_t)(thread_id); }
|
|
static inline DWORD to_os(uintptr_t thread_id) { return (DWORD)(thread_id); }
|
|
#elif XPLATFORMTHREADS_POSIX
|
|
static inline uintptr_t from_os(pthread_t thread_id) { return (uintptr_t)(thread_id); }
|
|
static inline pthread_t to_os(uintptr_t thread_id) { return pthread_t(thread_id); }
|
|
#endif // OS switch
|
|
};
|
|
|
|
//**********************************************************************************************
|
|
inline void WCThreadRef::OSDependent::GetCurrentThreadRef(WCThreadRef& tid)
|
|
{
|
|
#if XPLATFORMTHREADS_WINDOWS
|
|
DWORD thread_id = ::GetCurrentThreadId();
|
|
tid.m_osThreadRef = OSDependent::from_os(thread_id);
|
|
|
|
#elif XPLATFORMTHREADS_POSIX
|
|
pthread_t thread_id = ::pthread_self();
|
|
tid.m_osThreadRef = OSDependent::from_os(thread_id);
|
|
|
|
#endif // OS switch
|
|
}
|
|
|
|
//**********************************************************************************************
|
|
|
|
ThreadHandle StartThread(ThreadFunction func, ThreadFunctionArgument arg, ThreadPriority thpri)
|
|
{
|
|
EnsureThreadingInitialized();
|
|
ThreadWrapperData *ptwdata = new ThreadWrapperData;
|
|
ptwdata->func = func;
|
|
ptwdata->arg = arg;
|
|
ThreadHandle thToReturn;
|
|
ThreadHandle::OSDependent::StartThread(ptwdata, thToReturn, thpri);
|
|
return thToReturn;
|
|
}
|
|
|
|
bool KillThread(ThreadHandle h)
|
|
{
|
|
EnsureThreadingInitialized();
|
|
return ThreadHandle::OSDependent::KillThread(h);
|
|
}
|
|
|
|
bool JoinThread(ThreadHandle h, ThreadFunctionReturnType *pretval)
|
|
{
|
|
EnsureThreadingInitialized();
|
|
return ThreadHandle::OSDependent::JoinThread(h, pretval);
|
|
}
|
|
|
|
void Close(ThreadHandle h)
|
|
{
|
|
EnsureThreadingInitialized();
|
|
return ThreadHandle::OSDependent::Close(h);
|
|
}
|
|
|
|
//*******************************************************************************************
|
|
|
|
WCThreadRef GetCurrentThreadRef()
|
|
{
|
|
EnsureThreadingInitialized(); // Is it necessary?
|
|
WCThreadRef tRefToReturn;
|
|
WCThreadRef::OSDependent::GetCurrentThreadRef(tRefToReturn);
|
|
return tRefToReturn;
|
|
}
|
|
|
|
//*******************************************************************************************
|
|
|
|
bool IsThreadExists(const WCThreadRef& threadRef)
|
|
{
|
|
#if XPLATFORMTHREADS_WINDOWS
|
|
DWORD dwThreadId = WCThreadRef::OSDependent::to_os((uintptr_t)threadRef);
|
|
HANDLE handle = ::OpenThread(SYNCHRONIZE, // dwDesiredAccess - use of the thread handle in any of the wait functions
|
|
FALSE, // bInheritHandle - processes do not inherit this handle
|
|
dwThreadId);
|
|
|
|
// Now we have the handle, check if the associated thread exists:
|
|
DWORD retVal = WaitForSingleObject(handle, 0);
|
|
if (retVal == WAIT_FAILED)
|
|
return false; // the thread does not exists
|
|
else
|
|
return true; // the thread exists
|
|
|
|
#elif XPLATFORMTHREADS_POSIX
|
|
pthread_t pthreadRef = WCThreadRef::OSDependent::to_os((uintptr_t)threadRef);
|
|
int retVal = pthread_kill(pthreadRef, 0); // send a signal to the thread, but do nothing
|
|
if (retVal == ESRCH)
|
|
return false; // the thread does not exists
|
|
else
|
|
return true; // the thread exists
|
|
|
|
#endif // OS switch
|
|
}
|
|
|
|
//*******************************************************************************************
|
|
|
|
bool operator==(const WCThreadRef& first, const WCThreadRef& second)
|
|
{
|
|
return (first.m_osThreadRef == second.m_osThreadRef);
|
|
}
|
|
|
|
bool operator!=(const WCThreadRef& first, const WCThreadRef& second)
|
|
{
|
|
return (first.m_osThreadRef != second.m_osThreadRef);
|
|
}
|
|
|
|
bool operator<(const WCThreadRef& first, const WCThreadRef& second)
|
|
{
|
|
return (first.m_osThreadRef < second.m_osThreadRef);
|
|
}
|
|
|
|
bool operator>(const WCThreadRef& first, const WCThreadRef& second)
|
|
{
|
|
return (first.m_osThreadRef > second.m_osThreadRef);
|
|
}
|
|
|
|
bool WCAtomicLock::obtain(const uint32_t in_num_trys)
|
|
{
|
|
bool retVal = false;
|
|
|
|
uint32_t timeOut = in_num_trys;
|
|
while (true)
|
|
{
|
|
retVal = g_atomic_int_compare_and_exchange(&m_the_lock, gint(0), gint(1));
|
|
if (retVal)
|
|
{
|
|
break;
|
|
}
|
|
else
|
|
{
|
|
if (--timeOut == 0)
|
|
{
|
|
break;
|
|
}
|
|
sleep_milliseconds(1000);
|
|
}
|
|
}
|
|
|
|
return retVal;
|
|
}
|
|
|
|
void WCAtomicLock::release()
|
|
{
|
|
m_the_lock = 0;
|
|
}
|
|
|
|
} // namespace wvThread
|
|
} // namespace wvNS {
|
|
|