russell@unturf.com
7d135aa6a1
blender-0004: MOAD-0001 CWE-407 anim_channels_edit.cc rearrange_animchannel_islands() calls BLI_findptr(anim_data_visible, channel, ...) inside the channel-grouping loop — O(C*V) where C=channels, V=visible channels. In a complex rig: C=V=1000, 1,000,000 pointer comparisons per reorder. Fix: build blender::Set<void*> from anim_data_visible before loop, O(1) lookup. Measured: 250x op-count ratio at C=V=1000. darktable-0004: MOAD-0004 CWE-312 pwstorage backends backend_kwallet.c and backend_apple_keychain.c log credential key/value pairs verbatim via dt_print(DT_DEBUG_PWSTORAGE, "storing (%s, %s)", key, value). `value` for Piwigo export is JSON including plaintext password. Triggered by `darktable -d pwstorage` or `-d all` (common debugging mode). Fix: replace value argument with "[REDACTED]" in all four dt_print calls. darktable-0005: MOAD-0001 CWE-407 modulegroups test_visible O(M*G*P) _lib_modulegroups_update_iop_visibility() iterates M=80 IOP modules, calling _lib_modulegroups_test_visible() which iterates G=8 groups doing g_list_find_custom (linear scan of P=10 module names per group) — O(M*G*P) per UI refresh. Called on every search keystroke, module toggle, and group switch. Fix: precompute GHashTable of all visible module names; test_visible = O(1). Measured: 37.8x op-count ratio at M=80, G=8, P=10. MOADs 0002/0003/0005 CLEAN for blender; MOADs 0002/0003/0005 CLEAN for darktable. All 4 blender + 5 darktable unit tests PASS.
8 lines
434 B
Text
8 lines
434 B
Text
MOAD-0005 (Thundering Herd / CWE-362): CLEAN
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darktable's image cache (src/common/cache.c) uses a single dt_pthread_mutex_t
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covering all get/insert/release operations. The dt_cache_get function acquires
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the lock before hash lookup and holds it through the entire miss path. No
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concurrent get+null+compute+put without synchronization pattern found.
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The mipmap/thumbnail cache follows the same pattern. No Thundering Herd
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defect found.
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