internal static ImmutableArray <MetadataBlock> GetMetadataBlocks(GetMetadataBytesPtrFunction getMetaDataBytesPtrFunction, ImmutableArray <AssemblyIdentity> missingAssemblyIdentities)
{
ArrayBuilder <MetadataBlock> builder = null;
foreach (AssemblyIdentity missingAssemblyIdentity in missingAssemblyIdentities)
{
MetadataBlock block;
try
{
uint size;
IntPtr ptr;
ptr = getMetaDataBytesPtrFunction(missingAssemblyIdentity, out size);
Debug.Assert(size > 0);
block = GetMetadataBlock(ptr, size);
}
catch (Exception e) when(MetadataUtilities.IsBadOrMissingMetadataException(e, missingAssemblyIdentity.GetDisplayName()))
{
continue;
}
if (builder == null)
{
builder = ArrayBuilder <MetadataBlock> .GetInstance();
}
builder.Add(block);
}
return(builder == null ? ImmutableArray <MetadataBlock> .Empty : builder.ToImmutableAndFree());
}
internal static ImmutableArray <MetadataBlock> GetMetadataBlocks(GetMetadataBytesPtrFunction getMetaDataBytesPtrFunction, ImmutableArray <AssemblyIdentity> missingAssemblyIdentities)
{
ArrayBuilder <MetadataBlock> builder = null;
foreach (AssemblyIdentity missingAssemblyIdentity in missingAssemblyIdentities)
{
int size;
IntPtr ptr;
MetadataReader reader;
if (TryGetMetadataReader(getMetaDataBytesPtrFunction, missingAssemblyIdentity, out ptr, out size, out reader))
{
var moduleDef = reader.GetModuleDefinition();
var moduleVersionId = reader.GetGuid(moduleDef.Mvid);
var generationId = reader.GetGuid(moduleDef.GenerationId);
if (builder == null)
{
builder = ArrayBuilder <MetadataBlock> .GetInstance();
}
builder.Add(new MetadataBlock(moduleVersionId, generationId, ptr, size));
}
}
return(builder == null ? ImmutableArray <MetadataBlock> .Empty : builder.ToImmutableAndFree());
}
internal static ImmutableArray <MetadataBlock> GetMetadataBlocks(GetMetadataBytesPtrFunction getMetaDataBytesPtrFunction, ImmutableArray <AssemblyIdentity> missingAssemblyIdentities)
{
ArrayBuilder <MetadataBlock>?builder = null;
foreach (var missingAssemblyIdentity in missingAssemblyIdentities)
{
uint size;
IntPtr ptr;
try
{
ptr = getMetaDataBytesPtrFunction(missingAssemblyIdentity, out size);
Debug.Assert(size > 0);
}
catch (Exception e) when(DkmExceptionUtilities.IsBadOrMissingMetadataException(e))
{
continue;
}
if (!TryGetMetadataBlock(ptr, size, out var block))
{
// ignore modules with bad metadata headers
continue;
}
builder ??= ArrayBuilder <MetadataBlock> .GetInstance();
builder.Add(block);
}
return(builder == null ? ImmutableArray <MetadataBlock> .Empty : builder.ToImmutableAndFree());
}
/// <summary>
/// Attempt to construct a <see cref="MetadataReader"/> instance for this module.
/// </summary>
/// <returns>Returns 'false' for modules with "bad" or missing metadata.</returns>
private unsafe static bool TryGetMetadataReader(GetMetadataBytesPtrFunction getMetaDataBytesPtrFunction, AssemblyIdentity assemblyIdentity, out IntPtr ptr, out int size, out MetadataReader reader)
{
var assemblyName = assemblyIdentity.GetDisplayName();
try
{
uint uSize;
ptr = getMetaDataBytesPtrFunction(assemblyIdentity, out uSize);
size = (int)uSize;
reader = new MetadataReader((byte *)ptr, size);
return(true);
}
catch (Exception e) when(MetadataUtilities.IsBadOrMissingMetadataException(e, assemblyName))
{
ptr = IntPtr.Zero;
size = 0;
reader = null;
return(false);
}
}
