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| author | Etienne Pierre-doray <etiennep@chromium.org> | 2021-09-14 17:31:51 +0000 |
|---|---|---|
| committer | Copybara-Service <copybara-worker@google.com> | 2021-09-14 10:48:48 -0700 |
| commit | aff408603b3db5b7974c522db2ad8c5ce2a0f3c1 (patch) | |
| tree | 4366ce54a82c7aa38617942292f0a30b08a775cd /equivalence_map.h | |
| parent | 9ff43f558d334f100a92bf93d764f32293f9c5aa (diff) | |
| download | zucchini-aff408603b3db5b7974c522db2ad8c5ce2a0f3c1.tar.gz | |
[zucchini]: Convert TargetPool to deque.
shrink_to_fit with vector tends to cause high memory peak.
Changing deque is a simple change that reduces memory peak at the cost of
loss of guarantee (contiguous storage).
Similar to https://chromium-review.googlesource.com/c/chromium/src/+/2830864
which dramatically reduced crach rate
https://crash.corp.google.com/browse?q=product_name%3D%27Chrome%27+AND+EXISTS+%28SELECT+1+FROM+UNNEST%28CrashedStackTrace.StackFrame%29+WHERE+FunctionName%3D%27installer%3A%3AArchivePatchHelper%3A%3AZucchiniEnsemblePatch%27%29+AND+expanded_custom_data.ChromeCrashProto.magic_signature_1.name%3D%27%5BOut+of+Memory%5D+zucchini%3A%3ADisassemblerWin32%3Czucchini%3A%3AWin32X64Traits%3E%3A%3AParseAndStoreRel32%27
An alternative is to look ahead to determine vector size. The is hard to do
with SortAndUniquify, which performs in-place modifications.
Bug: 1247633
Change-Id: I624c360ee1f2bf18bd584d1aafdde0f0c2ffb61e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3149810
Commit-Queue: Etienne Pierre-Doray <etiennep@chromium.org>
Reviewed-by: Samuel Huang <huangs@chromium.org>
Cr-Commit-Position: refs/heads/main@{#921292}
NOKEYCHECK=True
GitOrigin-RevId: 380557e6b592531eb360513791968dd7ab0ee77d
Diffstat (limited to 'equivalence_map.h')
| -rw-r--r-- | equivalence_map.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/equivalence_map.h b/equivalence_map.h index 8b716a1..2a8b7de 100644 --- a/equivalence_map.h +++ b/equivalence_map.h @@ -128,7 +128,7 @@ class OffsetMapper { // Given sorted |offsets|, applies a projection in-place of all offsets that // are part of a pruned equivalence from |old_image| to |new_image|. Other // offsets are removed from |offsets|. - void ForwardProjectAll(std::vector<offset_t>* offsets) const; + void ForwardProjectAll(std::deque<offset_t>* offsets) const; // Accessor for testing. const std::vector<Equivalence> equivalences() const { return equivalences_; } |