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[release/8.0] [mono][metadata] Replace use of mem manager lock with loader lock #91327

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merged 2 commits into from
Aug 30, 2023
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[release/8.0] [mono][metadata] Replace use of mem manager lock with loader lock #91327

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06da2ff
[mono][metadata] Replace use of mem manager lock with loader lock
BrzVlad Aug 28, 2023
e96fe14
[mono][metadata] Use loader lock during generic class hash table lookup
BrzVlad Aug 28, 2023
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15 changes: 9 additions & 6 deletions src/mono/mono/metadata/metadata.c
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Original file line number Diff line number Diff line change
Expand Up @@ -3434,7 +3434,8 @@ mono_metadata_get_canonical_generic_inst (MonoGenericInst *candidate)
MonoMemoryManager *mm = mono_mem_manager_get_generic (data.images, data.nimages);
collect_data_free (&data);

mono_mem_manager_lock (mm);
// Hashtable key equal func can take loader lock
mono_loader_lock ();

if (!mm->ginst_cache)
mm->ginst_cache = g_hash_table_new_full (mono_metadata_generic_inst_hash, mono_metadata_generic_inst_equal, NULL, (GDestroyNotify)free_generic_inst);
Expand All @@ -3456,7 +3457,7 @@ mono_metadata_get_canonical_generic_inst (MonoGenericInst *candidate)
g_hash_table_insert (mm->ginst_cache, ginst, ginst);
}

mono_mem_manager_unlock (mm);
mono_loader_unlock ();

return ginst;
}
Expand All @@ -3467,7 +3468,8 @@ mono_metadata_get_canonical_aggregate_modifiers (MonoAggregateModContainer *cand
g_assert (candidate->count > 0);
MonoMemoryManager *mm = mono_metadata_get_mem_manager_for_aggregate_modifiers (candidate);

mono_mem_manager_lock (mm);
// Hashtable key equal func can take loader lock
mono_loader_lock ();

if (!mm->aggregate_modifiers_cache)
mm->aggregate_modifiers_cache = g_hash_table_new_full (aggregate_modifiers_hash, aggregate_modifiers_equal, NULL, (GDestroyNotify)free_aggregate_modifiers);
Expand All @@ -3484,7 +3486,7 @@ mono_metadata_get_canonical_aggregate_modifiers (MonoAggregateModContainer *cand

g_hash_table_insert (mm->aggregate_modifiers_cache, amods, amods);
}
mono_mem_manager_unlock (mm);
mono_loader_unlock ();
return amods;
}

Expand Down Expand Up @@ -3543,7 +3545,8 @@ mono_metadata_lookup_generic_class (MonoClass *container_class, MonoGenericInst
if (gclass)
return gclass;

mono_mem_manager_lock (mm);
// Hashtable key equal func can take loader lock
mono_loader_lock ();

gclass = mono_mem_manager_alloc0 (mm, sizeof (MonoGenericClass));
if (is_dynamic)
Expand All @@ -3563,7 +3566,7 @@ mono_metadata_lookup_generic_class (MonoClass *container_class, MonoGenericInst

// g_hash_table_insert (set->gclass_cache, gclass, gclass);

mono_mem_manager_unlock (mm);
mono_loader_unlock ();

return gclass2;
}
Expand Down
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