From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on dcvr.yhbt.net X-Spam-Level: X-Spam-ASN: AS31976 209.132.180.0/23 X-Spam-Status: No, score=-4.0 required=3.0 tests=AWL,BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,RCVD_IN_DNSWL_HI,RP_MATCHES_RCVD shortcircuit=no autolearn=ham autolearn_force=no version=3.4.0 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by dcvr.yhbt.net (Postfix) with ESMTP id 6EEB020958 for ; Mon, 20 Mar 2017 16:34:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755576AbdCTQeA (ORCPT ); Mon, 20 Mar 2017 12:34:00 -0400 Received: from alum-mailsec-scanner-6.mit.edu ([18.7.68.18]:52940 "EHLO alum-mailsec-scanner-6.mit.edu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754143AbdCTQd6 (ORCPT ); Mon, 20 Mar 2017 12:33:58 -0400 X-AuditID: 12074412-4bbff70000000b04-fb-58d004706891 Received: from outgoing-alum.mit.edu (OUTGOING-ALUM.MIT.EDU [18.7.68.33]) (using TLS with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by alum-mailsec-scanner-6.mit.edu (Symantec Messaging Gateway) with SMTP id 87.CA.02820.07400D85; Mon, 20 Mar 2017 12:33:52 -0400 (EDT) Received: from bagpipes.fritz.box (p57906F9B.dip0.t-ipconnect.de [87.144.111.155]) (authenticated bits=0) (User authenticated as mhagger@ALUM.MIT.EDU) by outgoing-alum.mit.edu (8.13.8/8.12.4) with ESMTP id v2KGXV9K010511 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=NOT); Mon, 20 Mar 2017 12:33:50 -0400 From: Michael Haggerty To: Junio C Hamano Cc: =?UTF-8?q?Nguy=E1=BB=85n=20Th=C3=A1i=20Ng=E1=BB=8Dc=20Duy?= , David Turner , Jeff King , git@vger.kernel.org, Michael Haggerty Subject: [PATCH 10/20] ref-cache: introduce a new type, ref_cache Date: Mon, 20 Mar 2017 17:33:15 +0100 Message-Id: <9fd710e84a0cf1bcdce5dd39cbb52d63a85689ae.1490026594.git.mhagger@alum.mit.edu> X-Mailer: git-send-email 2.11.0 In-Reply-To: References: X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFtrPIsWRmVeSWpSXmKPExsUixO6iqFvAciHC4OlDEYuuK91MFg29V5gt bq+Yz2yx5OFrZovuKW8ZLX609DA7sHn8ff+ByWPnrLvsHl3tR9g8nvXuYfS4eEnZ4/MmuQC2 KC6blNSczLLUIn27BK6MY9vusxTs0ar4MfMGUwPjO6UuRg4OCQETiY5J4l2MXBxCAjuYJDYs +sMI4Zxikmh49g3I4eRgE9CVWNTTzARiiwioSUxsO8QCUsQs8IhR4ur8u+wgCWEBR4mt9+cy g9gsAqoS999fYAWxeQWiJHo/XWIBsSUE5CV2tV0Ei3MKWEh8ud8IFhcSMJfoXNDLPoGRZwEj wypGucSc0lzd3MTMnOLUZN3i5MS8vNQiXTO93MwSvdSU0k2MkHAS2sG4/qTcIUYBDkYlHt4V V85HCLEmlhVX5h5ilORgUhLlfXobKMSXlJ9SmZFYnBFfVJqTWnyIUYKDWUmEt+olUI43JbGy KrUoHyYlzcGiJM77c7G6n5BAemJJanZqakFqEUxWhoNDSYKXHRg3QoJFqempFWmZOSUIaSYO TpDhPEDDFUBqeIsLEnOLM9Mh8qcYFaXEec8xASUEQBIZpXlwvbB4f8UoDvSKMO9XkCoeYKqA 634FNJgJaPCyG2dABpckIqSkGhgrdOuWOqd8EwyInP10FY/n4stP3Bz/2vOYyT1ZeWiF5RTd ddxmHiaJh7bLFX3zbPqinN/BKHXlxvH9l0qfN+2Ys1Hvy8YFOSvVFN7lleQmHpBoeCEt3vfl sXFE/53kfdbqbK+ytb/vjfQU+PlCVWBRiYBaquaUk5cnLfvPeuTTkjtLNdfOsvyrxFKckWio xVxUnAgAosOuC9ICAAA= Sender: git-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: git@vger.kernel.org For now, it just wraps a `ref_entry *` that points at the root of the tree. Soon it will hold more information. Add two new functions, `create_ref_cache()` and `free_ref_cache()`. Make `free_ref_entry()` private. Change files-backend to use this type to hold its caches. Signed-off-by: Michael Haggerty --- refs/files-backend.c | 28 +++++++++++++++++----------- refs/ref-cache.c | 16 +++++++++++++++- refs/ref-cache.h | 15 ++++++++++++++- 3 files changed, 46 insertions(+), 13 deletions(-) diff --git a/refs/files-backend.c b/refs/files-backend.c index f07e93d522..a7d912ae39 100644 --- a/refs/files-backend.c +++ b/refs/files-backend.c @@ -44,7 +44,7 @@ static int entry_resolves_to_object(struct ref_entry *entry) } struct packed_ref_cache { - struct ref_entry *root; + struct ref_cache *cache; /* * Count of references to the data structure in this instance, @@ -79,7 +79,7 @@ struct files_ref_store { char *gitcommondir; char *packed_refs_path; - struct ref_entry *loose; + struct ref_cache *loose; struct packed_ref_cache *packed; }; @@ -101,7 +101,7 @@ static void acquire_packed_ref_cache(struct packed_ref_cache *packed_refs) static int release_packed_ref_cache(struct packed_ref_cache *packed_refs) { if (!--packed_refs->referrers) { - free_ref_entry(packed_refs->root); + free_ref_cache(packed_refs->cache); stat_validity_clear(&packed_refs->validity); free(packed_refs); return 1; @@ -125,7 +125,7 @@ static void clear_packed_ref_cache(struct files_ref_store *refs) static void clear_loose_ref_cache(struct files_ref_store *refs) { if (refs->loose) { - free_ref_entry(refs->loose); + free_ref_cache(refs->loose); refs->loose = NULL; } } @@ -387,11 +387,12 @@ static struct packed_ref_cache *get_packed_ref_cache(struct files_ref_store *ref refs->packed = xcalloc(1, sizeof(*refs->packed)); acquire_packed_ref_cache(refs->packed); - refs->packed->root = create_dir_entry(refs, "", 0, 0); + refs->packed->cache = create_ref_cache(refs); + refs->packed->cache->root->flag &= ~REF_INCOMPLETE; f = fopen(packed_refs_file, "r"); if (f) { stat_validity_update(&refs->packed->validity, fileno(f)); - read_packed_refs(f, get_ref_dir(refs->packed->root)); + read_packed_refs(f, get_ref_dir(refs->packed->cache->root)); fclose(f); } } @@ -400,7 +401,7 @@ static struct packed_ref_cache *get_packed_ref_cache(struct files_ref_store *ref static struct ref_dir *get_packed_ref_dir(struct packed_ref_cache *packed_ref_cache) { - return get_ref_dir(packed_ref_cache->root); + return get_ref_dir(packed_ref_cache->cache->root); } static struct ref_dir *get_packed_refs(struct files_ref_store *refs) @@ -515,14 +516,19 @@ static struct ref_dir *get_loose_refs(struct files_ref_store *refs) * are about to read the only subdirectory that can * hold references: */ - refs->loose = create_dir_entry(refs, "", 0, 0); + refs->loose = create_ref_cache(refs); + + /* We're going to fill the top level ourselves: */ + refs->loose->root->flag &= ~REF_INCOMPLETE; + /* - * Create an incomplete entry for "refs/": + * Add an incomplete entry for "refs/" (to be filled + * lazily): */ - add_entry_to_dir(get_ref_dir(refs->loose), + add_entry_to_dir(get_ref_dir(refs->loose->root), create_dir_entry(refs, "refs/", 5, 1)); } - return get_ref_dir(refs->loose); + return get_ref_dir(refs->loose->root); } /* diff --git a/refs/ref-cache.c b/refs/ref-cache.c index 4274a43a9b..bf911028c8 100644 --- a/refs/ref-cache.c +++ b/refs/ref-cache.c @@ -63,9 +63,17 @@ struct ref_entry *create_ref_entry(const char *refname, return ref; } +struct ref_cache *create_ref_cache(struct files_ref_store *refs) +{ + struct ref_cache *ret = xcalloc(1, sizeof(*ret)); + + ret->root = create_dir_entry(refs, "", 0, 1); + return ret; +} + static void clear_ref_dir(struct ref_dir *dir); -void free_ref_entry(struct ref_entry *entry) +static void free_ref_entry(struct ref_entry *entry) { if (entry->flag & REF_DIR) { /* @@ -77,6 +85,12 @@ void free_ref_entry(struct ref_entry *entry) free(entry); } +void free_ref_cache(struct ref_cache *cache) +{ + free_ref_entry(cache->root); + free(cache); +} + /* * Clear and free all entries in dir, recursively. */ diff --git a/refs/ref-cache.h b/refs/ref-cache.h index 2e7b1a366e..da5388c136 100644 --- a/refs/ref-cache.h +++ b/refs/ref-cache.h @@ -1,6 +1,10 @@ #ifndef REFS_REF_CACHE_H #define REFS_REF_CACHE_H +struct ref_cache { + struct ref_entry *root; +}; + /* * Information used (along with the information in ref_entry) to * describe a single cached reference. This data structure only @@ -165,7 +169,16 @@ struct ref_entry *create_ref_entry(const char *refname, const unsigned char *sha1, int flag, int check_name); -void free_ref_entry(struct ref_entry *entry); +/* + * Return a pointer to a new `ref_cache`. Its top-level starts out + * marked incomplete. + */ +struct ref_cache *create_ref_cache(struct files_ref_store *refs); + +/* + * Free the `ref_cache` and all of its associated data. + */ +void free_ref_cache(struct ref_cache *cache); /* * Add a ref_entry to the end of dir (unsorted). Entry is always -- 2.11.0