Merged branch haiku/branches/developer/bonefish/vm into trunk. This

introduces the following relevant changes:
* VMCache:
  - Renamed vm_cache to VMCache, merged it with vm_store and made it a
    C++ class with virtual methods (replacing the store operations).
    Turned the different store implementations into subclasses.
  - Introduced MergeStore() callback, changed semantics of Commit().
  - Changed locking and referencing semantics. A reference can only be
    acquired/released with the cache locked. An unreferenced cache is
    deleted and a mergeable cache merged when it is unlocked. This
    removes the "busy" state of a cache and simplifies the page fault
    code.
* Added VMAnonymousCache, which will implement swap support (work by
  Zhao Shuai). It is not integrated and used yet, though.
* Enabled the mutex/recursive lock holder asserts.
* Fixed DoublyLinkedList::Swap().
* Generalized the low memory handler to a low resource handler. And made
  semaphores and reserved memory handled resources. Made
  vm_try_resource_memory() optionally wait (with timeout), and used that
  feature to reserve memory for areas.
...


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26572 a95241bf-73f2-0310-859d-f6bbb57e9c96

src/system/kernel/condition_variable.cpp

@@ -249,6 +249,15 @@ ConditionVariable::Add(ConditionVariableEntry* entry)
 }
 
 
+status_t
+ConditionVariable::Wait(uint32 flags, bigtime_t timeout)
+{
+	ConditionVariableEntry entry;
+	Add(&entry);
+	return entry.Wait(flags, timeout);
+}
+
+
 /*static*/ void
 ConditionVariable::ListAll()
 {
@@ -283,8 +292,6 @@ ConditionVariable::Dump() const
 void
 ConditionVariable::_Notify(bool all, bool threadsLocked)
 {
-	ASSERT(fObject != NULL);
-
 	InterruptsLocker _;
 	SpinLocker threadLocker(threadsLocked ? NULL : &thread_spinlock);
 	SpinLocker locker(sConditionVariablesLock);