streaming: free git_istream upon closing
Kirill Smelkov noticed that post-1.7.6 "git checkout" started leaking tons of memory. The streaming_write_entry function properly calls close_istream(), but that function did not actually free() the allocated git_istream struct. The git_istream struct is totally opaque to calling code, and must be heap-allocated by open_istream. Therefore it's not appropriate for callers to have to free it. This patch makes close_istream() into "close and de-allocate all associated resources". We could add a new "free_istream" call, but there's not much point in letting callers inspect the istream after close. And this patch's semantics make us match fopen/fclose, which is well-known and understood. Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>
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@ -94,7 +94,9 @@ struct git_istream {
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int close_istream(struct git_istream *st)
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{
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return st->vtbl->close(st);
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int r = st->vtbl->close(st);
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free(st);
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return r;
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}
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ssize_t read_istream(struct git_istream *st, char *buf, size_t sz)
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