libroot: Acquire the process heap lock.

Upon further investigation, the global heap lock should actually
not need to be reset, but the process heap lock will.

Change-Id: Id1fd91cc0e7acecd5b4fd76cb82d4ed2ae3900ad
Reviewed-on: https://review.haiku-os.org/c/haiku/+/6777
Reviewed-by: Jérôme Duval <[email protected]>
Tested-by: Commit checker robot <[email protected]>
Reviewed-by: waddlesplash <[email protected]>

src/system/libroot/posix/malloc_hoard2/arch-specific.cpp

@@ -79,8 +79,6 @@ __init_after_fork(void)
 			sHeapBase);
 		exit(1);
 	}
-
-	hoardLockInit(sHeapLock, "heap");
 }
 
 

src/system/libroot/posix/malloc_hoard2/wrapper.cpp

@@ -262,6 +262,8 @@ __heap_before_fork(void)
 	static processHeap *pHeap = getAllocator();
 	for (int i = 0; i < pHeap->getMaxThreadHeaps(); i++)
 		pHeap->getHeap(i).lock();
+
+	static_cast<hoardHeap*>(pHeap)->lock();
 }
 
 void __init_after_fork(void);
@@ -273,6 +275,8 @@ __heap_after_fork_child(void)
 	static processHeap *pHeap = getAllocator();
 	for (int i = 0; i < pHeap->getMaxThreadHeaps(); i++)
 		pHeap->getHeap(i).initLock();
+
+	pHeap->initLock();
 }
 
 
@@ -282,6 +286,8 @@ __heap_after_fork_parent(void)
 	static processHeap *pHeap = getAllocator();
 	for (int i = 0; i < pHeap->getMaxThreadHeaps(); i++)
 		pHeap->getHeap(i).unlock();
+
+	static_cast<hoardHeap*>(pHeap)->unlock();
 }