| commit | 0e228f1a3bf7749facf5a47567aa3b5e864e298c | [log] [tgz] |
|---|---|---|
| author | adonovan <adonovan@google.com> | Thu Feb 06 10:59:48 2020 -0800 |
| committer | Copybara-Service <copybara-worker@google.com> | Thu Feb 06 11:00:34 2020 -0800 |
| tree | ecba06027234d6219332ffce3a9a3db6945cf614 | |
| parent | 557cd1bc338df13a20c6183294ccfc8ee659ad21 [diff] |
bazel syntax: delete Callstack (used by memory allocation tracker) The Callstack was a copy of the thread's stack saved in thread-local storage. It was notified not only of every function call entry and exit, but the same for every expression too. This made it not only intrusive but incompatible with a compiled representation. This change deletes Callstack and replaces it with an interface, Debug.ThreadHook, that lets a single client be notified when a thread pushes its first frame or pops its last. The allocation tracker uses these notifications to maintain a mapping of Java threads to StarlarkThreads (similar to CpuProfiler), so that when the memory allocator hook is called, it can ascertain which Starlark thread caused the allocation. The tests have been reworked to call the interpreter instead of peeking and poking into the callstack directly. BUG=149023294 PiperOrigin-RevId: 293629363
{Fast, Correct} - Choose two
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