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/* -*- 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"
#if defined(MOZALLOC_EXPORT)
// do nothing: it's been defined to __declspec(dllexport) by
// mozalloc*.cpp on platforms where that's required
#elif defined(XP_WIN) || (defined(XP_OS2) && defined(__declspec))
# define MOZALLOC_EXPORT __declspec(dllimport)
#elif defined(HAVE_VISIBILITY_ATTRIBUTE)
/* Make sure symbols are still exported even if we're wrapped in a
* |visibility push(hidden)| blanket. */
# define MOZALLOC_EXPORT __attribute__ ((visibility ("default")))
#else
# define MOZALLOC_EXPORT
#endif
/**
* Called when memory is critically low. Returns iff it was able to
* remedy the critical memory situation; if not, it will abort().
*
* We have to re-#define MOZALLOC_EXPORT because this header can be
* used indepedently of mozalloc.h.
*/
MOZALLOC_EXPORT 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);
MOZALLOC_EXPORT 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 */
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