3 Commits

Author	SHA1	Message	Date
Alastair Houghton	9aac812dc7	[Backtracing] Fix a few niggles. ... It turns out that .copyBytes() checks that the source doesn't provide more bytes than the destination will accept. rdar://117681625	2023-11-03 14:36:22 +00:00
Alastair Houghton	d0b788abff	[Backtracing] Add a precondition to protect against problems in future. ... Because the cache uses the page addresses as its keys, we should have a precondition to check that we haven't passed an address within a page. The latter would result in confusing behaviour so it's worth diagnosing up front. rdar://117681625	2023-11-03 14:36:22 +00:00
Alastair Houghton	1fc2ca35e8	[Backtracing] Add a caching wrapper for MemoryReader. ... Currently we read many small chunks from the process we're backtracing. If it so happens that it's the local process, that isn't really a big problem, but if it's a remote process, especially on Linux where we have to use the memory server, it's probably a little slow. Fix by adding a caching layer. rdar://117681625	2023-11-03 14:36:19 +00:00