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version 1.2, 2006/08/09 21:12:42
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version 1.5.4.1, 2008/02/21 06:33:19
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| // | // |
| //============================================================================== | //============================================================================== |
| // | // |
| // Author: Mike Day (mdday@us.ibm.com) |
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| // |
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| // Reworked By: Mike Brasher (m.brasher@inovadevelopment.com) |
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| // |
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| //%///////////////////////////////////////////////////////////////////////////// | //%///////////////////////////////////////////////////////////////////////////// |
| | |
| #include "ReadWriteSem.h" | #include "ReadWriteSem.h" |
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| ReadWriteSem::~ReadWriteSem() | ReadWriteSem::~ReadWriteSem() |
| { | { |
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int r = 0; |
| while (EBUSY == pthread_rwlock_destroy(&_rwlock.rwlock)) |
while ((r=pthread_rwlock_destroy(&_rwlock.rwlock)) == EBUSY || |
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(r == -1 && errno == EBUSY)) |
| { | { |
| Threads::yield(); | Threads::yield(); |
| } | } |
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| } | } |
| else | else |
| throw(Permission(Threads::self())); | throw(Permission(Threads::self())); |
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if (errorcode == -1) |
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errorcode = errno; |
| if (errorcode == EBUSY) | if (errorcode == EBUSY) |
| throw(AlreadyLocked(_rwlock.owner)); | throw(AlreadyLocked(_rwlock.owner)); |
| else if (errorcode == EDEADLK) | else if (errorcode == EDEADLK) |
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| do | do |
| { | { |
| errorcode = pthread_rwlock_tryrdlock(&_rwlock.rwlock); | errorcode = pthread_rwlock_tryrdlock(&_rwlock.rwlock); |
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if (errorcode == -1) |
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errorcode = errno; |
| gettimeofday(&now, NULL); | gettimeofday(&now, NULL); |
| } | } |
| while (errorcode == EBUSY && | while (errorcode == EBUSY && |
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| do | do |
| { | { |
| errorcode = pthread_rwlock_trywrlock(&_rwlock.rwlock); | errorcode = pthread_rwlock_trywrlock(&_rwlock.rwlock); |
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if (errorcode == -1) |
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errorcode = errno; |
| gettimeofday(&now, NULL); | gettimeofday(&now, NULL); |
| } | } |
| while (errorcode == EBUSY && | while (errorcode == EBUSY && |
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| int ReadWriteSem::read_count() const | int ReadWriteSem::read_count() const |
| { | { |
| return (_readers.get()); |
return _readers.get(); |
| } | } |
| | |
| int ReadWriteSem::write_count() const | int ReadWriteSem::write_count() const |
| { | { |
| return (_writers.get()); |
return _writers.get(); |
| } | } |
| | |
| #endif /* PEGASUS_USE_POSIX_RWLOCK */ | #endif /* PEGASUS_USE_POSIX_RWLOCK */ |
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| Threads::cleanup_pop(0); | Threads::cleanup_pop(0); |
| } | } |
| | |
| if (Threads::id(caught.get_owner()) != 0) |
if (!Threads::null(caught.get_owner())) |
| throw caught; | throw caught; |
| if (Threads::id(caughtWaitFailed.get_owner()) != 0) |
if (!Threads::null(caughtWaitFailed.get_owner())) |
| throw caughtWaitFailed; | throw caughtWaitFailed; |
| if (Threads::id(caughtTimeOut.get_owner()) != 0) |
if (!Threads::null(caughtTimeOut.get_owner())) |
| throw caughtTimeOut; | throw caughtTimeOut; |
| if (Threads::id(caughtTooManyReaders.get_owner()) != 0) |
if (!Threads::null(caughtTooManyReaders.get_owner())) |
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| throw caughtTooManyReaders; | throw caughtTooManyReaders; |
| return; | return; |
| } | } |
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| int ReadWriteSem::read_count() const | int ReadWriteSem::read_count() const |
| { | { |
| return (_readers.get()); |
return _readers.get(); |
| } | } |
| | |
| int ReadWriteSem::write_count() const | int ReadWriteSem::write_count() const |
| { | { |
| return (_writers.get()); |
return _writers.get(); |
| } | } |
| | |
| #endif /* !PEGASUS_USE_SEMAPHORE_RWLOCK */ | #endif /* !PEGASUS_USE_SEMAPHORE_RWLOCK */ |
Return to
ReadWriteSem.cpp
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