Thread (15 messages) flat view 15 messages, 2 authors, 2016-06-15
STALE3753d

[PATCH v3 3/4] Add a function to release all packs

From: Johannes Schindelin <hidden>
Date: 2016-06-15 23:06:46
Subsystem: the rest · Maintainer: Linus Torvalds

On Windows, files that are in use cannot be removed or renamed. That
means that we have to release pack files when we are about to, say,
repack them. Let's introduce a convenient function to close them
pack files.

While at it, we consolidate the close windows/close fd/close index
stanza in `free_pack_by_name()` into the `close_pack()` function that
is used by the new `close_all_packs()` function to avoid repeated code.

Signed-off-by: Johannes Schindelin <redacted>
---
 cache.h     |  1 +
 sha1_file.c | 23 ++++++++++++++++++++---
 2 files changed, 21 insertions(+), 3 deletions(-)
diff --git a/cache.h b/cache.h
index 752031e..57f6a74 100644
--- a/cache.h
+++ b/cache.h
@@ -1275,6 +1275,7 @@ extern void close_pack_index(struct packed_git *);
 
 extern unsigned char *use_pack(struct packed_git *, struct pack_window **, off_t, unsigned long *);
 extern void close_pack_windows(struct packed_git *);
+extern void close_all_packs(void);
 extern void unuse_pack(struct pack_window **);
 extern void free_pack_by_name(const char *);
 extern void clear_delta_base_cache(void);
diff --git a/sha1_file.c b/sha1_file.c
index 8c3c913..ca699d7 100644
--- a/sha1_file.c
+++ b/sha1_file.c
@@ -798,6 +798,25 @@ static int close_pack_fd(struct packed_git *p)
 	return 1;
 }
 
+static void close_pack(struct packed_git *p)
+{
+	close_pack_windows(p);
+	close_pack_fd(p);
+	close_pack_index(p);
+}
+
+void close_all_packs(void)
+{
+	struct packed_git *p;
+
+	for (p = packed_git; p; p = p->next)
+		if (p->do_not_close)
+			die("BUG! Want to close pack marked 'do-not-close'");
+		else
+			close_pack(p);
+}
+
+
 /*
  * The LRU pack is the one with the oldest MRU window, preferring packs
  * with no used windows, or the oldest mtime if it has no windows allocated.
@@ -906,9 +925,7 @@ void free_pack_by_name(const char *pack_name)
 		p = *pp;
 		if (strcmp(pack_name, p->pack_name) == 0) {
 			clear_delta_base_cache();
-			close_pack_windows(p);
-			close_pack_fd(p);
-			close_pack_index(p);
+			close_pack(p);
 			free(p->bad_object_sha1);
 			*pp = p->next;
 			if (last_found_pack == p)
-- 
2.6.1.windows.1
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