* Adding static Notify{One,All} functions. This allows a cleaner implementation

of the condition variable and synchronization subsystem of the freebsd compat
  layer which will be committed next.
* Also there was a discussion about adding these functions on the commit
  mailing list. The mail in http://www.freelists.org/post/haiku-commits/r34395-in-haikutrunksrclibscompatfreebsd-network-compatsys,3
  is a good sum up of it (need to scroll somewhat down, though).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@34458 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/private/kernel/condition_variable.h

@@ -63,6 +63,13 @@ public:
 	inline	void				NotifyAll(bool threadsLocked = false,
 									status_t result = B_OK);
 
+	static void					NotifyOne(const void* object,
+									bool threadsLocked = false,
+									status_t result = B_OK);
+	static void					NotifyAll(const void* object,
+									bool threadsLocked = false,
+									status_t result = B_OK);
+
 			void				Add(ConditionVariableEntry* entry);
 
 			status_t			Wait(uint32 flags = 0, bigtime_t timeout = 0);

src/system/kernel/condition_variable.cpp

@@ -261,6 +261,34 @@ ConditionVariable::Wait(uint32 flags, bigtime_t timeout)
 }
 
 
+void
+ConditionVariable::NotifyOne(const void* object, bool threadsLocked,
+	status_t result)
+{
+	InterruptsSpinLocker locker(sConditionVariablesLock);
+	ConditionVariable* variable = sConditionVariableHash.Lookup(object);
+	locker.Unlock();
+	if (variable == NULL)
+		return;
+
+	variable->NotifyOne(threadsLocked, result);
+}
+
+
+void
+ConditionVariable::NotifyAll(const void* object,
+	bool threadsLocked, status_t result)
+{
+	InterruptsSpinLocker locker(sConditionVariablesLock);
+	ConditionVariable* variable = sConditionVariableHash.Lookup(object);
+	locker.Unlock();
+	if (variable == NULL)
+		return;
+
+	variable->NotifyAll(threadsLocked, result);
+}
+
+
 /*static*/ void
 ConditionVariable::ListAll()
 {