Ice 3.4.2 Source Distributionv3.4.2

1 files changed, 578 insertions, 0 deletions

diff --git a/cpp/src/IceUtil/Thread.cpp b/cpp/src/IceUtil/Thread.cpp
new file mode 100644
index 00000000000..950e39844ea
--- /dev/null
+++ b/cpp/src/IceUtil/Thread.cpp
@@ -0,0 +1,578 @@
+// **********************************************************************
+//
+// Copyright (c) 2003-2011 ZeroC, Inc. All rights reserved.
+//
+// This copy of Ice is licensed to you under the terms described in the
+// ICE_LICENSE file included in this distribution.
+//
+// **********************************************************************
+
+#ifdef __sun 
+//
+// Solaris 10 bug: it's supposed to be defined in pthread.h
+//
+#ifndef __EXTENSIONS__
+#define __EXTENSIONS__
+#endif
+#endif
+
+#include <IceUtil/Thread.h>
+#include <IceUtil/Time.h>
+#include <IceUtil/ThreadException.h>
+#include <climits>
+#include <exception>
+
+#ifndef _WIN32
+    #include <sys/time.h>
+    #include <sys/resource.h>
+#endif
+
+using namespace std;
+
+#ifdef _WIN32
+
+IceUtil::ThreadControl::ThreadControl() :
+    _handle(0),
+    _id(GetCurrentThreadId())
+{
+}
+
+IceUtil::ThreadControl::ThreadControl(HANDLE handle, IceUtil::ThreadControl::ID id) :
+    _handle(handle),
+    _id(id)
+{
+}
+
+bool
+IceUtil::ThreadControl::operator==(const ThreadControl& rhs) const
+{
+    return _id == rhs._id;
+}
+
+bool
+IceUtil::ThreadControl::operator!=(const ThreadControl& rhs) const
+{
+    return _id != rhs._id;
+}
+
+void
+IceUtil::ThreadControl::join()
+{
+    if(_handle == 0)
+    {
+        throw BadThreadControlException(__FILE__, __LINE__);
+    }
+
+    DWORD rc = WaitForSingleObject(_handle, INFINITE);
+    if(rc != WAIT_OBJECT_0)
+    {
+        throw ThreadSyscallException(__FILE__, __LINE__, GetLastError());
+    }
+    
+    detach();
+}
+
+void
+IceUtil::ThreadControl::detach()
+{
+    if(_handle == 0)
+    {
+        throw BadThreadControlException(__FILE__, __LINE__);
+    }
+    
+    if(CloseHandle(_handle) == 0)
+    {
+        throw ThreadSyscallException(__FILE__, __LINE__, GetLastError());
+    }
+}
+
+IceUtil::ThreadControl::ID
+IceUtil::ThreadControl::id() const
+{
+    return _id;
+}
+
+void
+IceUtil::ThreadControl::sleep(const Time& timeout)
+{
+    Sleep(static_cast<long>(timeout.toMilliSeconds()));
+}
+
+void
+IceUtil::ThreadControl::yield()
+{
+    //
+    // A value of zero causes the thread to relinquish the remainder
+    // of its time slice to any other thread of equal priority that is
+    // ready to run.
+    //
+    Sleep(0);
+}
+
+IceUtil::Thread::Thread() :
+    _started(false),
+    _running(false),
+    _handle(0),
+    _id(0)
+{
+}
+
+IceUtil::Thread::Thread(const string& name) :
+    _name(name),
+    _started(false),
+    _running(false),
+    _handle(0),
+    _id(0)
+{
+}
+
+IceUtil::Thread::~Thread()
+{
+}
+
+static unsigned int
+WINAPI startHook(void* arg)
+{
+    // Ensure that the thread doesn't go away until run() has
+    // completed.
+    //
+    IceUtil::ThreadPtr thread;
+
+    try
+    {
+        IceUtil::Thread* rawThread = static_cast<IceUtil::Thread*>(arg);
+
+        //
+        // Ensure that the thread doesn't go away until run() has
+        // completed.
+        //
+        thread = rawThread;
+
+#ifdef _WIN32
+        //
+        // Initialize the random number generator in each thread on
+        // Windows (the rand() seed is thread specific).
+        //
+        unsigned int seed = static_cast<unsigned int>(IceUtil::Time::now().toMicroSeconds());
+        srand(seed ^ thread->getThreadControl().id());
+#endif
+
+        //
+        // See the comment in IceUtil::Thread::start() for details.
+        //
+        rawThread->__decRef();
+        thread->run();
+    }
+    catch(...)
+    {
+        if(!thread->name().empty())
+        {
+            cerr << thread->name() << " terminating" << endl;
+        }
+#if defined(_MSC_VER) && (_MSC_VER < 1300)
+        terminate();
+#else
+	std::terminate();
+#endif
+    }
+
+    thread->_done();
+   
+    return 0;
+}
+
+#include <process.h>
+
+IceUtil::ThreadControl
+IceUtil::Thread::start(size_t stackSize)
+{
+    return start(stackSize, THREAD_PRIORITY_NORMAL);
+}
+
+IceUtil::ThreadControl
+IceUtil::Thread::start(size_t stackSize, int priority)
+{
+    //
+    // Keep this alive for the duration of start
+    //
+    IceUtil::ThreadPtr keepMe = this;
+
+    IceUtil::Mutex::Lock lock(_stateMutex);
+
+    if(_started)
+    {
+        throw ThreadStartedException(__FILE__, __LINE__);
+    }
+
+    //
+    // It's necessary to increment the reference count since
+    // pthread_create won't necessarily call the thread function until
+    // later. If the user does (new MyThread)->start() then the thread
+    // object could be deleted before the thread object takes
+    // ownership. It's also necessary to increment the reference count
+    // prior to calling pthread_create since the thread itself calls
+    // __decRef().
+    //
+    __incRef();
+    
+    unsigned int id;
+    _handle = 
+        reinterpret_cast<HANDLE>(
+            _beginthreadex(0, 
+                            static_cast<unsigned int>(stackSize), 
+                            startHook, this, CREATE_SUSPENDED, &id));
+    _id = id;
+
+    if(_handle == 0)
+    {
+        __decRef();
+        throw ThreadSyscallException(__FILE__, __LINE__, GetLastError());
+    }
+    if(SetThreadPriority(_handle, priority) == 0)
+    {
+        throw ThreadSyscallException(__FILE__, __LINE__, GetLastError());
+    }
+    if(ResumeThread(_handle) == -1)
+    {
+        __decRef();
+        throw ThreadSyscallException(__FILE__, __LINE__, GetLastError());
+    }
+
+    _started = true;
+    _running = true;
+    
+    return ThreadControl(_handle, _id);
+}
+
+IceUtil::ThreadControl
+IceUtil::Thread::getThreadControl() const
+{
+    IceUtil::Mutex::Lock lock(_stateMutex);
+    if(!_started)
+    {
+        throw ThreadNotStartedException(__FILE__, __LINE__);
+    }
+    return ThreadControl(_handle, _id);
+}
+
+bool
+IceUtil::Thread::operator==(const Thread& rhs) const
+{
+    return this == &rhs;
+}
+
+bool
+IceUtil::Thread::operator!=(const Thread& rhs) const
+{
+    return this != &rhs;
+}
+
+bool
+IceUtil::Thread::operator<(const Thread& rhs) const
+{
+    return this < &rhs;
+}
+
+bool
+IceUtil::Thread::isAlive() const
+{
+    IceUtil::Mutex::Lock lock(_stateMutex);
+    return _running;
+}
+
+void
+IceUtil::Thread::_done()
+{
+    IceUtil::Mutex::Lock lock(_stateMutex);
+    _running = false;
+}
+
+const string&
+IceUtil::Thread::name() const
+{
+    return _name;
+}
+
+#else
+
+IceUtil::ThreadControl::ThreadControl(pthread_t thread) :
+    _thread(thread),
+    _detachable(true)
+{
+}
+
+IceUtil::ThreadControl::ThreadControl() :
+    _thread(pthread_self()),
+    _detachable(false)
+{
+}
+
+bool
+IceUtil::ThreadControl::operator==(const ThreadControl& rhs) const
+{
+    return pthread_equal(_thread, rhs._thread) != 0;
+}
+
+bool
+IceUtil::ThreadControl::operator!=(const ThreadControl& rhs) const
+{
+    return !operator==(rhs);
+}
+
+void
+IceUtil::ThreadControl::join()
+{
+    if(!_detachable)
+    {
+        throw BadThreadControlException(__FILE__, __LINE__);
+    }
+
+    void* ignore = 0;
+    int rc = pthread_join(_thread, &ignore);
+    if(rc != 0)
+    {
+        throw ThreadSyscallException(__FILE__, __LINE__, rc);
+    }
+}
+
+void
+IceUtil::ThreadControl::detach()
+{
+    if(!_detachable)
+    {
+        throw BadThreadControlException(__FILE__, __LINE__);
+    }
+
+    int rc = pthread_detach(_thread);
+    if(rc != 0)
+    {
+        throw ThreadSyscallException(__FILE__, __LINE__, rc);
+    }
+}
+
+IceUtil::ThreadControl::ID
+IceUtil::ThreadControl::id() const
+{
+    return _thread;
+}
+
+void
+IceUtil::ThreadControl::sleep(const Time& timeout)
+{
+    struct timeval tv = timeout;
+    struct timespec ts;
+    ts.tv_sec = tv.tv_sec;
+    ts.tv_nsec = tv.tv_usec * 1000L;
+    nanosleep(&ts, 0);
+}
+
+void
+IceUtil::ThreadControl::yield()
+{
+    sched_yield();
+}
+
+IceUtil::Thread::Thread() :
+    _started(false),
+    _running(false)
+{
+}
+
+IceUtil::Thread::Thread(const string& name) :
+    _name(name),
+    _started(false),
+    _running(false)
+{
+}
+
+IceUtil::Thread::~Thread()
+{
+}
+
+extern "C" 
+{
+static void*
+startHook(void* arg)
+{
+    //
+    // Ensure that the thread doesn't go away until run() has
+    // completed.
+    //
+    IceUtil::ThreadPtr thread;
+
+    try
+    {
+        IceUtil::Thread* rawThread = static_cast<IceUtil::Thread*>(arg);
+
+        thread = rawThread;
+
+        //
+        // See the comment in IceUtil::Thread::start() for details.
+        //
+        rawThread->__decRef();
+        thread->run();
+    }
+    catch(...)
+    {
+        if(!thread->name().empty())
+        {
+            cerr << thread->name() << " terminating" << endl;
+        }
+        std::terminate();
+    }
+
+    thread->_done();
+    
+    return 0;
+}
+}
+
+
+IceUtil::ThreadControl
+IceUtil::Thread::start(size_t stackSize)
+{
+    return start(stackSize, false, 0);
+}
+
+IceUtil::ThreadControl
+IceUtil::Thread::start(size_t stackSize, int priority)
+{
+    return start(stackSize, true, priority);
+}
+IceUtil::ThreadControl
+IceUtil::Thread::start(size_t stackSize, bool realtimeScheduling, int priority)
+{
+    //
+    // Keep this alive for the duration of start
+    //
+    IceUtil::ThreadPtr keepMe = this;
+
+    IceUtil::Mutex::Lock lock(_stateMutex);
+
+    if(_started)
+    {
+        throw ThreadStartedException(__FILE__, __LINE__);
+    }
+
+    //
+    // It's necessary to increment the reference count since
+    // pthread_create won't necessarily call the thread function until
+    // later. If the user does (new MyThread)->start() then the thread
+    // object could be deleted before the thread object takes
+    // ownership. It's also necessary to increment the reference count
+    // prior to calling pthread_create since the thread itself calls
+    // __decRef().
+    //
+    __incRef();
+
+    pthread_attr_t attr;
+    int rc = pthread_attr_init(&attr);
+    if(rc != 0)
+    {
+        __decRef();
+        pthread_attr_destroy(&attr);
+        throw ThreadSyscallException(__FILE__, __LINE__, rc);
+    }
+    if(stackSize > 0)
+    {
+        if(stackSize < PTHREAD_STACK_MIN)
+        {
+            stackSize = PTHREAD_STACK_MIN;
+        }
+#ifdef __APPLE__
+        if(stackSize % 4096 > 0)
+        {
+            stackSize = stackSize / 4096 * 4096 + 4096;
+        }
+#endif
+        rc = pthread_attr_setstacksize(&attr, stackSize);
+        if(rc != 0)
+        {
+            __decRef();
+            pthread_attr_destroy(&attr);
+            throw ThreadSyscallException(__FILE__, __LINE__, rc);
+        }
+    }
+
+    if(realtimeScheduling)
+    {
+        rc = pthread_attr_setschedpolicy(&attr, SCHED_RR);
+        if(rc != 0)
+        {
+            __decRef();
+            throw ThreadSyscallException(__FILE__, __LINE__, rc);
+        }
+        sched_param param;
+        param.sched_priority = priority;
+        rc = pthread_attr_setschedparam(&attr, &param);
+        if(rc != 0)
+        {
+            __decRef();
+            pthread_attr_destroy(&attr);
+            throw ThreadSyscallException(__FILE__, __LINE__, rc);
+        }
+        pthread_attr_setinheritsched(&attr, PTHREAD_EXPLICIT_SCHED);
+    }
+    rc = pthread_create(&_thread, &attr, startHook, this);
+    pthread_attr_destroy(&attr);
+    if(rc != 0)
+    {
+        __decRef();
+        throw ThreadSyscallException(__FILE__, __LINE__, rc);
+    }
+
+    _started = true;
+    _running = true;
+    return ThreadControl(_thread);
+}
+
+IceUtil::ThreadControl
+IceUtil::Thread::getThreadControl() const
+{
+    IceUtil::Mutex::Lock lock(_stateMutex);
+    if(!_started)
+    {
+        throw ThreadNotStartedException(__FILE__, __LINE__);
+    }
+    return ThreadControl(_thread);
+}
+
+bool
+IceUtil::Thread::operator==(const Thread& rhs) const
+{
+    return this == &rhs;
+}
+
+bool
+IceUtil::Thread::operator!=(const Thread& rhs) const
+{
+    return this != &rhs;
+}
+
+bool
+IceUtil::Thread::operator<(const Thread& rhs) const
+{
+    return this < &rhs;
+}
+
+bool
+IceUtil::Thread::isAlive() const
+{
+    IceUtil::Mutex::Lock lock(_stateMutex);
+    return _running;
+}
+
+void
+IceUtil::Thread::_done()
+{
+    IceUtil::Mutex::Lock lock(_stateMutex);
+    _running = false;
+}
+
+const string&
+IceUtil::Thread::name() const
+{
+    return _name;
+}
+
+#endif