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support: Add support_blob_repeat_allocate_shared

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Reviewed-by: Carlos O'Donell <carlos@redhat.com>
This commit is contained in:
Florian Weimer
2020-05-12 19:01:49 +02:00
parent 4cab20fa49
commit 0e28cfff9d
3 changed files with 68 additions and 20 deletions
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12
support/blob_repeat.h
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@@ -38,7 +38,17 @@ struct support_blob_repeat support_blob_repeat_allocate (const void *element,
size_t element_size,
size_t count);
/* Deallocate the blob created by support_blob_repeat_allocate. */
/* Like support_blob_repeat_allocate, except that copy-on-write
semantics are disabled. This means writing to one part of the blob
can affect other parts. It is possible to map non-shared memory
over parts of the resulting blob using MAP_ANONYMOUS | MAP_FIXED
| MAP_PRIVATE, so that writes to these parts do not affect
others. */
struct support_blob_repeat support_blob_repeat_allocate_shared
(const void *element, size_t element_size, size_t count);
/* Deallocate the blob created by support_blob_repeat_allocate or
support_blob_repeat_allocate_shared. */
void support_blob_repeat_free (struct support_blob_repeat *);
#endif /* SUPPORT_BLOB_REPEAT_H */