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Annotation of truecrypt/platform/unix/mutex.cpp, revision 1.1

1.1     ! root        1: /*
        !             2:  Copyright (c) 2008 TrueCrypt Foundation. All rights reserved.
        !             3: 
        !             4:  Governed by the TrueCrypt License 2.4 the full text of which is contained
        !             5:  in the file License.txt included in TrueCrypt binary and source code
        !             6:  distribution packages.
        !             7: */
        !             8: 
        !             9: #include <pthread.h>
        !            10: #include "Platform/Mutex.h"
        !            11: #include "Platform/SystemException.h"
        !            12: 
        !            13: namespace TrueCrypt
        !            14: {
        !            15:        Mutex::Mutex ()
        !            16:        {
        !            17:                pthread_mutexattr_t attributes;
        !            18: 
        !            19:                int status = pthread_mutexattr_init (&attributes);
        !            20:                if (status != 0)
        !            21:                        throw SystemException (SRC_POS, status);
        !            22: 
        !            23:                status = pthread_mutexattr_settype (&attributes, PTHREAD_MUTEX_RECURSIVE);
        !            24:                if (status != 0)
        !            25:                        throw SystemException (SRC_POS, status);
        !            26: 
        !            27:                status = pthread_mutex_init (&SystemMutex, &attributes);
        !            28:                if (status != 0)
        !            29:                        throw SystemException (SRC_POS, status);
        !            30: 
        !            31:                Initialized = true;
        !            32:        }
        !            33: 
        !            34:        Mutex::~Mutex ()
        !            35:        {
        !            36:                Initialized = false;
        !            37:                int status = pthread_mutex_destroy (&SystemMutex);
        !            38:                if (status != 0)
        !            39:                        throw SystemException (SRC_POS, status);
        !            40:        }
        !            41: 
        !            42:        void Mutex::Lock ()
        !            43:        {
        !            44:                assert (Initialized);
        !            45:                int status = pthread_mutex_lock (&SystemMutex);
        !            46:                if (status != 0)
        !            47:                        throw SystemException (SRC_POS, status);
        !            48:        }
        !            49: 
        !            50:        void Mutex::Unlock ()
        !            51:        {
        !            52:                int status = pthread_mutex_unlock (&SystemMutex);
        !            53:                if (status != 0)
        !            54:                        throw SystemException (SRC_POS, status);
        !            55:        }
        !            56: }

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