import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

memory/mozalloc/mozalloc_oom.h

@@ -0,0 +1,31 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ * vim: sw=4 ts=4 et :
+ */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef mozilla_mozalloc_oom_h
+#define mozilla_mozalloc_oom_h
+
+#include "mozalloc.h"
+
+/**
+ * Called when memory is critically low.  Returns iff it was able to
+ * remedy the critical memory situation; if not, it will abort().
+ */
+MFBT_API void mozalloc_handle_oom(size_t requestedSize);
+
+/**
+ * Called by embedders (specifically Mozilla breakpad) which wants to be
+ * notified of an intentional abort, to annotate any crash report with
+ * the size of the allocation on which we aborted.
+ */
+typedef void (*mozalloc_oom_abort_handler)(size_t size);
+MFBT_API void mozalloc_set_oom_abort_handler(mozalloc_oom_abort_handler handler);
+
+/* TODO: functions to query system memory usage and register
+ * critical-memory handlers. */
+
+
+#endif /* ifndef mozilla_mozalloc_oom_h */