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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
* vim: set ts=8 sts=4 et sw=4 tw=99:
* 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 ds_MemoryProtectionExceptionHandler_h
#define ds_MemoryProtectionExceptionHandler_h
#include "jstypes.h"
namespace js {
/*
* This structure allows you to annotate crashes resulting from unauthorized
* access to protected memory in regions of interest, to make them stand out
* from other heap corruption crashes.
*/
struct MemoryProtectionExceptionHandler
{
/* Installs the exception handler; called early during initialization. */
static bool install();
/* If the exception handler is disabled, it won't be installed. */
static bool isDisabled();
/*
* Marks a region of memory as important; if something tries to access this
* region in an unauthorized way (e.g. writing to read-only memory),
* the resulting crash will be annotated to stand out from other random
* heap corruption.
*/
static void addRegion(void* addr, size_t size);
/* Removes a previously added region. */
static void removeRegion(void* addr);
/* Uninstalls the exception handler; called late during shutdown. */
static void uninstall();
};
} /* namespace js */
#endif /* ds_MemoryProtectionExceptionHandler_h */
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