*Massive cleanup (\n\n -> \n, *\n -> \n, cleanup for(...) to for (...), and some other cleanups by hand)
*Fix a possible crash in Spell::DoAllEffectOnTarget --HG-- branch : trunk
This commit is contained in:
@@ -1,35 +1,24 @@
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// $Id: Token.cpp 80826 2008-03-04 14:51:23Z wotte $
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#include "ace/Token.h"
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#if !defined (__ACE_INLINE__)
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# include "ace/Token.inl"
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#endif /* __ACE_INLINE__ */
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ACE_RCSID(ace, Token, "$Id: Token.cpp 80826 2008-03-04 14:51:23Z wotte $")
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#if defined (ACE_HAS_THREADS)
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#include "ace/Thread.h"
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#include "ace/Log_Msg.h"
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#if defined (ACE_TOKEN_DEBUGGING)
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// FUZZ: disable check_for_streams_include
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#include "ace/streams.h"
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#endif /* ACE_TOKEN_DEBUGGING */
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ACE_BEGIN_VERSIONED_NAMESPACE_DECL
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ACE_ALLOC_HOOK_DEFINE(ACE_Token)
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void
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ACE_Token::dump (void) const
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{
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#if defined (ACE_HAS_DUMP)
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ACE_TRACE ("ACE_Token::dump");
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ACE_DEBUG ((LM_DEBUG, ACE_BEGIN_DUMP, this));
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ACE_DEBUG ((LM_DEBUG, ACE_TEXT ("\nthread = %d"), ACE_Thread::self ()));
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// @@ Is there a portable way to do this?
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// ACE_DEBUG ((LM_DEBUG, "\nowner_ = %d", (long) this->owner_));
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@@ -40,7 +29,6 @@ ACE_Token::dump (void) const
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ACE_DEBUG ((LM_DEBUG, ACE_END_DUMP));
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#endif /* ACE_HAS_DUMP */
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}
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ACE_Token::ACE_Token_Queue_Entry::ACE_Token_Queue_Entry (ACE_Thread_Mutex &m,
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ACE_thread_t t_id)
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: next_ (0),
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@@ -55,10 +43,8 @@ ACE_Token::ACE_Token_Queue_Entry::ACE_Token_Queue_Entry (ACE_Thread_Mutex &m,
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#if defined (ACE_TOKEN_USES_SEMAPHORE)
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ACE_UNUSED_ARG (m);
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#endif /* ACE_TOKEN_USES_SEMAPHORE */
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ACE_TRACE ("ACE_Token::ACE_Token_Queue_Entry::ACE_Token_Queue_Entry");
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}
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ACE_Token::ACE_Token_Queue_Entry::ACE_Token_Queue_Entry (ACE_Thread_Mutex &m,
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ACE_thread_t t_id,
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ACE_Condition_Attributes &attributes)
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@@ -75,17 +61,14 @@ ACE_Token::ACE_Token_Queue_Entry::ACE_Token_Queue_Entry (ACE_Thread_Mutex &m,
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ACE_UNUSED_ARG (m);
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ACE_UNUSED_ARG (attributes);
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#endif /* ACE_TOKEN_USES_SEMAPHORE */
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ACE_TRACE ("ACE_Token::ACE_Token_Queue_Entry::ACE_Token_Queue_Entry");
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}
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ACE_Token::ACE_Token_Queue::ACE_Token_Queue (void)
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: head_ (0),
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tail_ (0)
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{
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ACE_TRACE ("ACE_Token::ACE_Token_Queue::ACE_Token_Queue");
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}
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//
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// Remove an entry from the list. Must be called with locks held.
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//
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@@ -95,15 +78,12 @@ ACE_Token::ACE_Token_Queue::remove_entry (ACE_Token::ACE_Token_Queue_Entry *entr
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ACE_TRACE ("ACE_Token::ACE_Token_Queue::remove_entry");
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ACE_Token_Queue_Entry *curr = 0;
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ACE_Token_Queue_Entry *prev = 0;
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if (this->head_ == 0)
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return;
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for (curr = this->head_;
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curr != 0 && curr != entry;
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curr = curr->next_)
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prev = curr;
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if (curr == 0)
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// Didn't find the entry...
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return;
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@@ -113,13 +93,11 @@ ACE_Token::ACE_Token_Queue::remove_entry (ACE_Token::ACE_Token_Queue_Entry *entr
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else
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// Delete in the middle.
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prev->next_ = curr->next_;
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// We need to update the tail of the list if we've deleted the last
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// entry.
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if (curr->next_ == 0)
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this->tail_ = prev;
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}
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//
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// Add an entry into the list. Must be called with locks held.
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//
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@@ -149,20 +127,15 @@ ACE_Token::ACE_Token_Queue::insert_entry (ACE_Token::ACE_Token_Queue_Entry &entr
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// Insert in the middle of the queue somewhere.
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{
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// Determine where our thread should go in the queue of waiters.
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ACE_Token::ACE_Token_Queue_Entry *insert_after = this->head_;
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while (requeue_position-- && insert_after->next_ != 0)
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insert_after = insert_after->next_;
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entry.next_ = insert_after->next_;
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if (entry.next_ == 0)
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this->tail_ = &entry;
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insert_after->next_ = &entry;
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}
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}
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ACE_Token::ACE_Token (const ACE_TCHAR *name, void *any)
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: lock_ (name, (ACE_mutexattr_t *) any),
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owner_ (ACE_OS::NULL_thread),
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@@ -174,12 +147,10 @@ ACE_Token::ACE_Token (const ACE_TCHAR *name, void *any)
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{
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// ACE_TRACE ("ACE_Token::ACE_Token");
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}
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ACE_Token::~ACE_Token (void)
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{
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ACE_TRACE ("ACE_Token::~ACE_Token");
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}
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int
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ACE_Token::shared_acquire (void (*sleep_hook_func)(void *),
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void *arg,
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@@ -188,13 +159,10 @@ ACE_Token::shared_acquire (void (*sleep_hook_func)(void *),
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{
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ACE_TRACE ("ACE_Token::shared_acquire");
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ACE_GUARD_RETURN (ACE_Thread_Mutex, ace_mon, this->lock_, -1);
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#if defined (ACE_TOKEN_DEBUGGING)
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this->dump ();
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#endif /* ACE_TOKEN_DEBUGGING */
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ACE_thread_t const thr_id = ACE_Thread::self ();
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// Nobody holds the token.
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if (!this->in_use_)
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{
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@@ -203,34 +171,28 @@ ACE_Token::shared_acquire (void (*sleep_hook_func)(void *),
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this->owner_ = thr_id;
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return 0;
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}
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//
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// Someone already holds the token.
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//
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// Check if it is us.
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if (ACE_OS::thr_equal (thr_id, this->owner_))
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{
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++this->nesting_level_;
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return 0;
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}
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// Do a quick check for "polling" behavior.
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if (timeout != 0 && timeout->sec () == 0 && timeout->usec () == 0)
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{
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errno = ETIME;
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return -1;
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}
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//
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// We've got to sleep until we get the token.
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//
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// Which queue we should end up in...
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ACE_Token_Queue *queue = (op_type == ACE_Token::READ_TOKEN
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? &this->readers_
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: &this->writers_);
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// Allocate queue entry on stack. This works since we don't exit
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// this method's activation record until we've got the token.
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ACE_Token::ACE_Token_Queue_Entry my_entry (this->lock_,
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@@ -238,7 +200,6 @@ ACE_Token::shared_acquire (void (*sleep_hook_func)(void *),
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this->attributes_);
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queue->insert_entry (my_entry, this->queueing_strategy_);
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++this->waiters_;
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// Execute appropriate <sleep_hook> callback. (@@ should these
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// methods return a success/failure status, and if so, what should
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// we do with it?)
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@@ -254,50 +215,41 @@ ACE_Token::shared_acquire (void (*sleep_hook_func)(void *),
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this->sleep_hook ();
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++ret;
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}
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bool timed_out = false;
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bool error = false;
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// Sleep until we've got the token (ignore signals).
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do
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{
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int const result = my_entry.wait (timeout, this->lock_);
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if (result == -1)
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{
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// Note, this should obey whatever thread-specific interrupt
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// policy is currently in place...
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if (errno == EINTR)
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continue;
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#if defined (ACE_TOKEN_DEBUGGING)
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cerr << '(' << ACE_Thread::self () << ')'
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<< " acquire: "
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<< (errno == ETIME ? "timed out" : "error occurred")
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<< endl;
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#endif /* ACE_TOKEN_DEBUGGING */
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// We come here if a timeout occurs or some serious
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// ACE_Condition object error.
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if (errno == ETIME)
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timed_out = true;
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else
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error = true;
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// Stop the loop.
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break;
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}
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}
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while (!ACE_OS::thr_equal (thr_id, this->owner_));
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// Do this always and irrespective of the result of wait().
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--this->waiters_;
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queue->remove_entry (&my_entry);
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#if defined (ACE_TOKEN_DEBUGGING)
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ACE_DEBUG ((LM_DEBUG, "(%t) ACE_Token::shared_acquire (UNBLOCKED)\n"));
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#endif /* ACE_TOKEN_DEBUGGING */
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// If timeout occured
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if (timed_out)
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{
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@@ -307,7 +259,6 @@ ACE_Token::shared_acquire (void (*sleep_hook_func)(void *),
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// Wakeup next waiter since this thread timed out.
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this->wakeup_next_waiter ();
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}
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// Return error.
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return -1;
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}
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@@ -316,32 +267,25 @@ ACE_Token::shared_acquire (void (*sleep_hook_func)(void *),
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// Return error.
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return -1;
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}
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// If this is a normal wakeup, this thread should be runnable.
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ACE_ASSERT (my_entry.runable_);
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return ret;
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}
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// By default this is a no-op.
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/* virtual */
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void
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ACE_Token::sleep_hook (void)
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{
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ACE_TRACE ("ACE_Token::sleep_hook");
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}
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int
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ACE_Token::acquire (ACE_Time_Value *timeout)
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{
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ACE_TRACE ("ACE_Token::acquire");
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return this->shared_acquire (0, 0, timeout, ACE_Token::WRITE_TOKEN);
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}
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// Acquire the token, sleeping until it is obtained or until <timeout>
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// expires.
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int
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ACE_Token::acquire (void (*sleep_hook_func)(void *),
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void *arg,
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@@ -350,100 +294,79 @@ ACE_Token::acquire (void (*sleep_hook_func)(void *),
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ACE_TRACE ("ACE_Token::acquire");
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return this->shared_acquire (sleep_hook_func, arg, timeout, ACE_Token::WRITE_TOKEN);
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}
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// Try to renew the token.
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int
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ACE_Token::renew (int requeue_position,
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ACE_Time_Value *timeout)
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{
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ACE_TRACE ("ACE_Token::renew");
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ACE_GUARD_RETURN (ACE_Thread_Mutex, ace_mon, this->lock_, -1);
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#if defined (ACE_TOKEN_DEBUGGING)
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this->dump ();
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#endif /* ACE_TOKEN_DEBUGGING */
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// ACE_ASSERT (ACE_OS::thr_equal (ACE_Thread::self (), this->owner_));
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// Check to see if there are any waiters worth giving up the lock
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// for.
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// If no writers and either we are a writer or there are no readers.
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if (this->writers_.head_ == 0 &&
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(this->in_use_ == ACE_Token::WRITE_TOKEN ||
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this->readers_.head_ == 0))
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// Immediate return.
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return 0;
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// We've got to sleep until we get the token again.
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// Determine which queue should this thread go to.
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ACE_Token::ACE_Token_Queue *this_threads_queue =
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this->in_use_ == ACE_Token::READ_TOKEN ?
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&this->readers_ : &this->writers_;
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ACE_Token::ACE_Token_Queue_Entry my_entry (this->lock_,
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this->owner_);
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this_threads_queue->insert_entry (my_entry,
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// if requeue_position == 0 then we want to go next,
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// otherwise use the queueing strategy, which might also
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// happen to be 0.
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requeue_position == 0 ? 0 : this->queueing_strategy_);
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++this->waiters_;
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// Remember nesting level...
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int const save_nesting_level_ = this->nesting_level_;
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// Reset state for new owner.
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this->nesting_level_ = 0;
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// Wakeup waiter.
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this->wakeup_next_waiter ();
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bool timed_out = false;
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bool error = false;
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// Sleep until we've got the token (ignore signals).
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do
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{
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int const result = my_entry.wait (timeout, this->lock_);
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if (result == -1)
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{
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// Note, this should obey whatever thread-specific interrupt
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// policy is currently in place...
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if (errno == EINTR)
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continue;
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#if defined (ACE_TOKEN_DEBUGGING)
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cerr << '(' << ACE_Thread::self () << ')'
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<< " renew: "
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<< (errno == ETIME ? "timed out" : "error occurred")
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<< endl;
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#endif /* ACE_TOKEN_DEBUGGING */
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// We come here if a timeout occurs or some serious
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// ACE_Condition object error.
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if (errno == ETIME)
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timed_out = true;
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else
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error = true;
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// Stop the loop.
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break;
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}
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}
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while (!ACE_OS::thr_equal (my_entry.thread_id_, this->owner_));
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// Do this always and irrespective of the result of wait().
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--this->waiters_;
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this_threads_queue->remove_entry (&my_entry);
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#if defined (ACE_TOKEN_DEBUGGING)
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ACE_DEBUG ((LM_DEBUG, "(%t) ACE_Token::renew (UNBLOCKED)\n"));
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#endif /* ACE_TOKEN_DEBUGGING */
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// If timeout occured
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if (timed_out)
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{
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@@ -453,7 +376,6 @@ ACE_Token::renew (int requeue_position,
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// Wakeup next waiter since this thread timed out.
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this->wakeup_next_waiter ();
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}
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// Return error.
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return -1;
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}
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@@ -462,29 +384,22 @@ ACE_Token::renew (int requeue_position,
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// Return error.
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return -1;
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}
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// If this is a normal wakeup, this thread should be runnable.
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ACE_ASSERT (my_entry.runable_);
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// Reinstate nesting level.
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this->nesting_level_ = save_nesting_level_;
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return 0;
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}
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// Release the current holder of the token (which had
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// better be the caller's thread!).
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int
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ACE_Token::release (void)
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{
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ACE_TRACE ("ACE_Token::release");
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ACE_GUARD_RETURN (ACE_Thread_Mutex, ace_mon, this->lock_, -1);
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#if defined (ACE_TOKEN_DEBUGGING)
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this->dump ();
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#endif /* ACE_TOKEN_DEBUGGING */
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// Nested release...
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if (this->nesting_level_ > 0)
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--this->nesting_level_;
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@@ -493,23 +408,18 @@ ACE_Token::release (void)
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//
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// Regular release...
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//
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// Wakeup waiter.
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this->wakeup_next_waiter ();
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}
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return 0;
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}
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void
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ACE_Token::wakeup_next_waiter (void)
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{
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ACE_TRACE ("ACE_Token::wakeup_next_waiter");
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// Reset state for new owner.
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this->owner_ = ACE_OS::NULL_thread;
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this->in_use_ = 0;
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// Any waiters...
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if (this->writers_.head_ == 0 &&
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this->readers_.head_ == 0)
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@@ -517,10 +427,8 @@ ACE_Token::wakeup_next_waiter (void)
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// No more waiters...
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return;
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}
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// Wakeup next waiter.
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ACE_Token_Queue *queue = 0;
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// Writer threads get priority to run first.
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if (this->writers_.head_ != 0)
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{
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@@ -532,15 +440,11 @@ ACE_Token::wakeup_next_waiter (void)
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this->in_use_ = ACE_Token::READ_TOKEN;
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queue = &this->readers_;
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}
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// Wake up waiter and make it runable.
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queue->head_->runable_ = 1;
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queue->head_->signal ();
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this->owner_ = queue->head_->thread_id_;
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}
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ACE_END_VERSIONED_NAMESPACE_DECL
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#endif /* ACE_HAS_THREADS */
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Block a user