Author: Jonas Devlieghere Date: 2022-02-11T15:26:33-08:00 New Revision: af969141fa285157044e34fb6b27963c3278241b
URL: https://github.com/llvm/llvm-project/commit/af969141fa285157044e34fb6b27963c3278241b DIFF: https://github.com/llvm/llvm-project/commit/af969141fa285157044e34fb6b27963c3278241b.diff LOG: [lldb] Pin the shared cache when iterating over its images Use the dyld_shared_cache_(un)pin_mapping SPI to map the whole shared cache in memory (if possible) to avoid repeated calls to mmap. rdar://81189015 Added: Modified: lldb/source/Plugins/ObjectFile/Mach-O/ObjectFileMachO.cpp Removed: ################################################################################ diff --git a/lldb/source/Plugins/ObjectFile/Mach-O/ObjectFileMachO.cpp b/lldb/source/Plugins/ObjectFile/Mach-O/ObjectFileMachO.cpp index 10137e714861d..131d1932fe142 100644 --- a/lldb/source/Plugins/ObjectFile/Mach-O/ObjectFileMachO.cpp +++ b/lldb/source/Plugins/ObjectFile/Mach-O/ObjectFileMachO.cpp @@ -2711,7 +2711,7 @@ void ObjectFileMachO::ParseSymtab(Symtab &symtab) { if (process_shared_cache_uuid.IsValid() && process_shared_cache_uuid != UUID::fromOptionalData(&cache_uuid, 16)) return; - + const bool pinned = dyld_shared_cache_pin_mapping(shared_cache); dyld_shared_cache_for_each_image(shared_cache, ^(dyld_image_t image) { uuid_t dsc_image_uuid; if (found_image) @@ -2768,6 +2768,8 @@ void ObjectFileMachO::ParseSymtab(Symtab &symtab) { nlist_count = nlistCount; }); }); + if (pinned) + dyld_shared_cache_unpin_mapping(shared_cache); }); if (nlist_buffer) { DataExtractor dsc_local_symbols_data(nlist_buffer, _______________________________________________ lldb-commits mailing list lldb-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/lldb-commits
