0a31d508f1
v8_debug_helper attempts to flag known object pointers when it can recognize them, even if the memory pointed to is not available in the crash dump. In ptr-compr builds, the first pages of the map space, read-only space, and old space are always at the same offsets within the heap reservation region, so we can more easily detect known objects. Bug: v8:9376 Change-Id: I04e0d2357143d753f575f556e94f8fd42ce9d811 Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/1783729 Commit-Queue: Seth Brenith <seth.brenith@microsoft.com> Reviewed-by: Ulan Degenbaev <ulan@chromium.org> Reviewed-by: Jakob Gruber <jgruber@chromium.org> Cr-Commit-Position: refs/heads/master@{#63624}
32 lines
1.1 KiB
C++
32 lines
1.1 KiB
C++
// Copyright 2019 the V8 project authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef V8_TOOLS_DEBUG_HELPER_HEAP_CONSTANTS_H_
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#define V8_TOOLS_DEBUG_HELPER_HEAP_CONSTANTS_H_
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#include <cstdint>
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#include <string>
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#include "debug-helper.h"
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namespace d = v8::debug_helper;
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namespace v8_debug_helper_internal {
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// Functions generated by gen-heap-constants.py, based on data from mkgrokdump:
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std::string FindKnownObjectInOldSpace(uintptr_t offset);
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std::string FindKnownObjectInReadOnlySpace(uintptr_t offset);
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std::string FindKnownObjectInMapSpace(uintptr_t offset);
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std::string FindKnownMapInstanceTypeInMapSpace(uintptr_t offset);
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std::string FindKnownMapInstanceTypeInReadOnlySpace(uintptr_t offset);
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void FillInUnknownHeapAddresses(d::HeapAddresses* heap_addresses,
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uintptr_t any_uncompressed_ptr);
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std::string FindKnownObject(uintptr_t address,
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const d::HeapAddresses& heap_addresses);
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} // namespace v8_debug_helper_internal
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#endif
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