version 1.1.2.11, 2006/07/29 01:18:27
|
version 1.5.4.1, 2008/02/21 06:33:19
|
|
|
// | // |
//============================================================================== | //============================================================================== |
// | // |
// Author: Mike Day (mdday@us.ibm.com) |
|
// |
|
// Reworked By: Mike Brasher (m.brasher@inovadevelopment.com) |
|
// |
|
//%///////////////////////////////////////////////////////////////////////////// | //%///////////////////////////////////////////////////////////////////////////// |
| |
#include "ReadWriteSem.h" | #include "ReadWriteSem.h" |
|
|
| |
ReadWriteSem::~ReadWriteSem() | ReadWriteSem::~ReadWriteSem() |
{ | { |
|
int r = 0; |
while (EBUSY == pthread_rwlock_destroy(&_rwlock.rwlock)) |
while ((r=pthread_rwlock_destroy(&_rwlock.rwlock)) == EBUSY || |
|
(r == -1 && errno == EBUSY)) |
{ | { |
Threads::yield(); | Threads::yield(); |
} | } |
|
|
} | } |
else | else |
throw(Permission(Threads::self())); | throw(Permission(Threads::self())); |
|
if (errorcode == -1) |
|
errorcode = errno; |
if (errorcode == EBUSY) | if (errorcode == EBUSY) |
throw(AlreadyLocked(_rwlock.owner)); | throw(AlreadyLocked(_rwlock.owner)); |
else if (errorcode == EDEADLK) | else if (errorcode == EDEADLK) |
|
|
do | do |
{ | { |
errorcode = pthread_rwlock_tryrdlock(&_rwlock.rwlock); | errorcode = pthread_rwlock_tryrdlock(&_rwlock.rwlock); |
|
if (errorcode == -1) |
|
errorcode = errno; |
gettimeofday(&now, NULL); | gettimeofday(&now, NULL); |
} | } |
while (errorcode == EBUSY && | while (errorcode == EBUSY && |
|
|
do | do |
{ | { |
errorcode = pthread_rwlock_trywrlock(&_rwlock.rwlock); | errorcode = pthread_rwlock_trywrlock(&_rwlock.rwlock); |
|
if (errorcode == -1) |
|
errorcode = errno; |
gettimeofday(&now, NULL); | gettimeofday(&now, NULL); |
} | } |
while (errorcode == EBUSY && | while (errorcode == EBUSY && |
|
|
| |
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 */ |
|
|
{ | { |
_rwlock._internal_lock.lock(); | _rwlock._internal_lock.lock(); |
} | } |
catch(Deadlock & d) |
catch (Deadlock &) |
{ | { |
d = d; // no problem - we own the lock, which is |
// no problem - we own the lock, which is what we want |
// what we want |
|
} | } |
catch(IPCException &) | catch(IPCException &) |
{ | { |
|
|
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())) |
|
|
throw caughtTooManyReaders; | throw caughtTooManyReaders; |
return; | return; |
} | } |
|
|
| |
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 */ |