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9af2398977
In my "build everything" tree, a change to the types in qapi-schema.json triggers a recompile of about 4800 out of 5100 objects. The previous commit split up qmp-commands.h, qmp-event.h, qmp-visit.h, qapi-types.h. Each of these headers still includes all its shards. Reduce compile time by including just the shards we actually need. To illustrate the benefits: adding a type to qapi/migration.json now recompiles some 2300 instead of 4800 objects. The next commit will improve it further. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20180211093607.27351-24-armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> [eblake: rebase to master] Signed-off-by: Eric Blake <eblake@redhat.com>
51 lines
1.8 KiB
C
51 lines
1.8 KiB
C
/*
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* Clone Visitor
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*
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* Copyright (C) 2016 Red Hat, Inc.
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*
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*/
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#ifndef QAPI_CLONE_VISITOR_H
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#define QAPI_CLONE_VISITOR_H
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#include "qapi/visitor.h"
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/*
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* The clone visitor is for direct use only by the QAPI_CLONE() macro;
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* it requires that the root visit occur on an object, list, or
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* alternate, and is not usable directly on built-in QAPI types.
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*/
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typedef struct QapiCloneVisitor QapiCloneVisitor;
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void *qapi_clone(const void *src, void (*visit_type)(Visitor *, const char *,
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void **, Error **));
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void qapi_clone_members(void *dst, const void *src, size_t sz,
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void (*visit_type_members)(Visitor *, void *,
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Error **));
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/*
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* Deep-clone QAPI object @src of the given @type, and return the result.
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*
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* Not usable on QAPI scalars (integers, strings, enums), nor on a
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* QAPI object that references the 'any' type. Safe when @src is NULL.
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*/
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#define QAPI_CLONE(type, src) \
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((type *)qapi_clone(src, \
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(void (*)(Visitor *, const char *, void**, \
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Error **))visit_type_ ## type))
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/*
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* Copy deep clones of @type members from @src to @dst.
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*
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* Not usable on QAPI scalars (integers, strings, enums), nor on a
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* QAPI object that references the 'any' type.
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*/
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#define QAPI_CLONE_MEMBERS(type, dst, src) \
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qapi_clone_members(dst, src, sizeof(type), \
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(void (*)(Visitor *, void *, \
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Error **))visit_type_ ## type ## _members)
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#endif
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