1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/memory/mozalloc/mozalloc_oom.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,48 @@
1.4 +/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
1.5 + * vim: sw=4 ts=4 et :
1.6 + */
1.7 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.8 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.9 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.10 +
1.11 +#ifndef mozilla_mozalloc_oom_h
1.12 +#define mozilla_mozalloc_oom_h
1.13 +
1.14 +#include "mozalloc.h"
1.15 +
1.16 +#if defined(MOZALLOC_EXPORT)
1.17 +// do nothing: it's been defined to __declspec(dllexport) by
1.18 +// mozalloc*.cpp on platforms where that's required
1.19 +#elif defined(XP_WIN)
1.20 +# define MOZALLOC_EXPORT __declspec(dllimport)
1.21 +#elif defined(HAVE_VISIBILITY_ATTRIBUTE)
1.22 +/* Make sure symbols are still exported even if we're wrapped in a
1.23 + * |visibility push(hidden)| blanket. */
1.24 +# define MOZALLOC_EXPORT __attribute__ ((visibility ("default")))
1.25 +#else
1.26 +# define MOZALLOC_EXPORT
1.27 +#endif
1.28 +
1.29 +
1.30 +/**
1.31 + * Called when memory is critically low. Returns iff it was able to
1.32 + * remedy the critical memory situation; if not, it will abort().
1.33 + *
1.34 + * We have to re-#define MOZALLOC_EXPORT because this header can be
1.35 + * used indepedently of mozalloc.h.
1.36 + */
1.37 +MOZALLOC_EXPORT void mozalloc_handle_oom(size_t requestedSize);
1.38 +
1.39 +/**
1.40 + * Called by embedders (specifically Mozilla breakpad) which wants to be
1.41 + * notified of an intentional abort, to annotate any crash report with
1.42 + * the size of the allocation on which we aborted.
1.43 + */
1.44 +typedef void (*mozalloc_oom_abort_handler)(size_t size);
1.45 +MOZALLOC_EXPORT void mozalloc_set_oom_abort_handler(mozalloc_oom_abort_handler handler);
1.46 +
1.47 +/* TODO: functions to query system memory usage and register
1.48 + * critical-memory handlers. */
1.49 +
1.50 +
1.51 +#endif /* ifndef mozilla_mozalloc_oom_h */
