/usr/include/tango/log4tango/threading/MSThreads.hh is in liblog4tango-dev 9.2.5a+dfsg1-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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// MSThreads.hh
//
// Copyright (C) : 2000 - 2002
// LifeLine Networks BV (www.lifeline.nl). All rights reserved.
// Bastiaan Bakker. All rights reserved.
//
// 2004,2005,2006,2007,2008,2009,2010,2011,2012
// Synchrotron SOLEIL
// L'Orme des Merisiers
// Saint-Aubin - BP 48 - France
//
// This file is part of log4tango.
//
// Log4ango is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Log4tango 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 Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with Log4Tango. If not, see <http://www.gnu.org/licenses/>.
#ifndef _LOG4TANGO_THREADING_MSTHREADS_H
#define _LOG4TANGO_THREADING_MSTHREADS_H
#include <string>
// deal with ERROR #define
// This #includes windows.h with NOGDI and WIN32_LEAN_AND_MEAN
// #defined. If this is not what the user wants, #include
// windows.h before this file.
#ifndef _WINDOWS_
# ifndef NOGDI
# define NOGDI // circumvent the ERROR #define in windows.h
# define LOG4TANGO_UNDEFINE_NOGDI
# endif
# ifndef WIN32_LEAN_AND_MEAN
# define WIN32_LEAN_AND_MEAN
# define LOG4TANGO_UNDEFINE_WIN32_LEAN_AND_MEAN
# endif
# include <windows.h>
# ifdef LOG4TANGO_UNDEFINE_NOGDI
# undef NOGDI
# endif
# ifdef LOG4TANGO_UNDEFINE_WIN32_LEAN_AND_MEAN
# undef WIN32_LEAN_AND_MEAN
# endif
#endif
// done dealing with ERROR #define
namespace log4tango {
namespace threading {
std::string get_thread_id (void);
long thread_id (void);
//-----------------------------------------------------------------------------
// Class : MSMutex
//-----------------------------------------------------------------------------
class LOG4TANGO_EXPORT Mutex
{
public:
Mutex() {
InitializeCriticalSection(&_criticalSection);
}
~Mutex() {
DeleteCriticalSection(&_criticalSection);
}
inline LPCRITICAL_SECTION get_critical_section (void) {
return &_criticalSection;
}
private:
Mutex(const Mutex&);
Mutex operator=(const Mutex&);
CRITICAL_SECTION _criticalSection;
};
//-----------------------------------------------------------------------------
// Class : ScopedLock
//-----------------------------------------------------------------------------
class ScopedLock
{
public:
ScopedLock (Mutex& mutex) {
_criticalSection = mutex.get_critical_section();
EnterCriticalSection(_criticalSection);
}
~ScopedLock() {
LeaveCriticalSection(_criticalSection);
}
private:
ScopedLock(const ScopedLock&);
ScopedLock operator=(const ScopedLock&);
LPCRITICAL_SECTION _criticalSection;
};
//-----------------------------------------------------------------------------
// Class : RecursiveMutex
//-----------------------------------------------------------------------------
class RecursiveMutex
{
public:
// ctor
RecursiveMutex (void) : recursion_level_(0) {
::InitializeCriticalSection(&guard_);
}
// dtor
~RecursiveMutex (void) {
::DeleteCriticalSection(&guard_);
}
// Locking an RecursiveMutex:
// If <timeout_> is null (the default), <lock> blocks until
// the mutex is acquired and returns 1 (true). Otherwise,
// <lock> blocks until the mutex is acquired or times out
// after <timeout_> milliseconds in which case 0 (false) is
// returned.
inline int lock (long timeout_ = 0) {
::EnterCriticalSection(&guard_);
recursion_level_++;
return 0;
}
// Releasing an RecursiveMutex:
// Call unlock <recursion level> times (i.e. one call for
// each previous call to lock) or call unlockn just once.
// These two methods do nothing if the caller is not the
// current owner of the mutex.
inline void unlock (void) {
//-should work if called by owner
recursion_level_--;
::LeaveCriticalSection(&guard_);
}
inline void unlockn (void) {
//-should work if called by owner
while (recursion_level_ > 0) {
recursion_level_--;
::LeaveCriticalSection(&guard_);
}
}
protected:
// guards the <recursion level>
CRITICAL_SECTION guard_;
private:
// current level of the recursion
unsigned long recursion_level_;
// dummy copy constructor and operator= to prevent copying
RecursiveMutex (const RecursiveMutex&);
RecursiveMutex& operator= (const RecursiveMutex&);
};
//-----------------------------------------------------------------------------
// Class : ThreadLocalDataHolder
//-----------------------------------------------------------------------------
/**
* This class holds Thread local data of type T, i.e. for each
* thread a ThreadLocalDataHolder holds 0 or 1 instance of T.
* The held object must be heap allocated and will be deleted
* upon termination of the thread to which it belongs.
**/
#ifdef LOG4TANGO_HAS_NDC
template<typename T> class ThreadLocalDataHolder
{
public:
inline ThreadLocalDataHolder()
: _key(TlsAlloc()) {
};
inline ~ThreadLocalDataHolder() {
TlsFree(_key);
};
/**
* Obtains the Object held for the current thread.
* @return a pointer to the held Object or NULL if no
* Object has been set for the current thread.
**/
inline T* get (void) const {
return (T*)TlsGetValue(_key);
};
/**
* Obtains the Object held for the current thread.
* Initially each thread holds NULL.
* @return a pointer to the held Object or NULL if no
* Object has been set for the current thread.
**/
inline T* operator->() const {
return get();
};
/**
* Obtains the Object held for the current thread.
* @pre get() != NULL
* @return a reference to the held Object.
**/
inline T& operator*() const {
return *get();
};
/**
* Releases the Object held for the current thread.
* @post get() == NULL
* @return a pointer to the Object thas was held for
* the current thread or NULL if no Object was held.
**/
inline T* release() {
T* result = (T*)TlsGetValue(_key);
TlsSetValue(_key, NULL);
return result;
};
/**
* Sets a new Object to be held for the current thread. A
* previously set Object will be deleted.
* @param p the new object to hold.
* @post get() == p
**/
inline void reset(T* p = NULL) {
T* thing = (T*)TlsGetValue(_key);
delete thing;
TlsSetValue(_key, p);
};
private:
DWORD _key;
};
#endif // LOG4TANGO_HAS_NDC
} // namespace threading
} // namespace log4tango
#endif // _LOG4TANGO_THREADING_MSTHREADS_H
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