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v8/tools/debug_helper
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Seth Brenith 8b1a5681de [tools] Fix v8windbg behavior on Map's bit_field2 
Bill kindly pointed out to me that v8windbg was not handling bit_field2
correctly. The issue was that the constexpr type for ElementsKind was,
somewhat unsurprisingly, "ElementsKind", but v8windbg expected a fully-
qualified type name like "v8::internal::ElementsKind". This change
addresses the problem in two ways:
1. Update v8windbg's type resolution logic to resolve type names as if
   they were used in the v8::internal namespace. This makes it more
   consistent with how those type names are used in other generated
   Torque code, reducing surprises and the number of times we have to
   write `v8::internal::` in .tq files.
2. Add compile-time verification that any constexpr type name used as a
   string in class-debug-readers-tq.cc can also resolve as a type name.

Bug: v8:9376
Change-Id: I349cd6ab586fd8345a1fa8bfc3989bb8e6376ab8
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2063769
Reviewed-by: Tobias Tebbi <tebbi@chromium.org>
Reviewed-by: Clemens Backes <clemensb@chromium.org>
Commit-Queue: Seth Brenith <seth.brenith@microsoft.com>
Cr-Commit-Position: refs/heads/master@{#66633}
2020-03-09 17:36:27 +00:00
..
BUILD.gn [torque] Generate GC object visitors for Torque classes 2020-03-09 11:37:37 +00:00
debug-helper-internal.cc [tools] Fix v8windbg behavior on Map's bit_field2 2020-03-09 17:36:27 +00:00
debug-helper-internal.h [tools] Fix v8windbg behavior on Map's bit_field2 2020-03-09 17:36:27 +00:00
debug-helper.h [tools] Fix v8windbg behavior on Map's bit_field2 2020-03-09 17:36:27 +00:00
DEPS Reland "Add postmortem debugging helper library" 2019-07-31 14:30:19 +00:00
gen-heap-constants.py [tools] Fix v8windbg behavior on Map's bit_field2 2020-03-09 17:36:27 +00:00
get-object-properties.cc [tools] Fix v8windbg behavior on Map's bit_field2 2020-03-09 17:36:27 +00:00
heap-constants.cc [tools] Fix v8windbg behavior on Map's bit_field2 2020-03-09 17:36:27 +00:00
heap-constants.h [tools] Fix v8windbg behavior on Map's bit_field2 2020-03-09 17:36:27 +00:00
list-object-classes.cc [tools] Fix v8windbg behavior on Map's bit_field2 2020-03-09 17:36:27 +00:00
README.md Reland "Add postmortem debugging helper library" 2019-07-31 14:30:19 +00:00

README.md

V8 debug helper

This library is for debugging V8 itself, not debugging JavaScript running within V8. It is designed to be called from a debugger extension running within a native debugger such as WinDbg or LLDB. It can be used on live processes or crash dumps, and cannot assume that all memory is available in a dump.