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libctf: dedup: describe 'citer'

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The distinction between the citer and citers variables in
ctf_dedup_rhash_type is somewhat opaque (it's a micro-optimization to avoid
having to allocate entire sets when we know in advance that we'll only have
to store one value).  Add a comment.

libctf/
	* ctf-dedup.c (ctf_dedup_rhash_type): Comment on citers variables.
This commit is contained in:
Nick Alcock
2024-10-01 15:34:12 +01:00
parent 06cefeee6b
commit ac07bccf05
1 changed files with 2 additions and 0 deletions
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libctf/ctf-dedup.c
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@@ -582,6 +582,8 @@ ctf_dedup_rhash_type (ctf_dict_t *fp, ctf_dict_t *input, ctf_dict_t **inputs,
const char *whaterr; const char *whaterr;
int err = 0; int err = 0;
/* "citer" is for types that reference only one other type: "citers" can store
many of them, but is more expensive to both populate and traverse. */
const char *citer = NULL; const char *citer = NULL;
ctf_dynset_t *citers = NULL; ctf_dynset_t *citers = NULL;