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335fe2545e
Introduce a new function that maps an object source's type to a human-readable name. Use the function to provide better human-readable error messages for the downcasting functions. Signed-off-by: Patrick Steinhardt <ps@pks.im> Signed-off-by: Junio C Hamano <gitster@pobox.com>
36 lines
1.1 KiB
C
36 lines
1.1 KiB
C
#ifndef ODB_SOURCE_INMEMORY_H
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#define ODB_SOURCE_INMEMORY_H
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#include "odb/source.h"
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struct oidtree;
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/*
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* An in-memory source that you can write objects to that shall be made
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* available for reading, but that shouldn't ever be persisted to disk. Note
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* that any objects written to this source will be stored in memory, so the
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* number of objects you can store is limited by available system memory.
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*/
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struct odb_source_inmemory {
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struct odb_source base;
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struct oidtree *objects;
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};
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/* Create a new in-memory object database source. */
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struct odb_source_inmemory *odb_source_inmemory_new(struct object_database *odb);
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/*
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* Cast the given object database source to the in-memory backend. This will
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* cause a BUG in case the source doesn't use this backend.
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*/
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static inline struct odb_source_inmemory *odb_source_inmemory_downcast(struct odb_source *source)
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{
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if (source->type != ODB_SOURCE_INMEMORY)
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BUG("trying to downcast source of type '%s' to '%s'",
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odb_source_type_to_name(source->type),
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odb_source_type_to_name(ODB_SOURCE_INMEMORY));
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return container_of(source, struct odb_source_inmemory, base);
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}
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#endif
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