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authorJunio C Hamano <gitster@pobox.com>2017-10-03 15:42:50 +0900
committerJunio C Hamano <gitster@pobox.com>2017-10-03 15:42:50 +0900
commit1a2e1a76ec2cbbafe60ffd124f673f62045fb0d3 (patch)
tree91595ea0e1c159a7422b484c698e258de1579d72 /Makefile
parent9124cca61f7edfed70dc5d8bced7fb7cb9fe2221 (diff)
parentcff28ca94cca0fd4712aa37f6ca93430bb3351d8 (diff)
downloadgit-1a2e1a76ec2cbbafe60ffd124f673f62045fb0d3.tar.gz
git-1a2e1a76ec2cbbafe60ffd124f673f62045fb0d3.tar.xz
Merge branch 'mh/mmap-packed-refs'
Operations that do not touch (majority of) packed refs have been optimized by making accesses to packed-refs file lazy; we no longer pre-parse everything, and an access to a single ref in the packed-refs does not touch majority of irrelevant refs, either. * mh/mmap-packed-refs: (21 commits) packed-backend.c: rename a bunch of things and update comments mmapped_ref_iterator: inline into `packed_ref_iterator` ref_cache: remove support for storing peeled values packed_ref_store: get rid of the `ref_cache` entirely ref_store: implement `refs_peel_ref()` generically packed_read_raw_ref(): read the reference from the mmapped buffer packed_ref_iterator_begin(): iterate using `mmapped_ref_iterator` read_packed_refs(): ensure that references are ordered when read packed_ref_cache: keep the `packed-refs` file mmapped if possible packed-backend.c: reorder some definitions mmapped_ref_iterator_advance(): no peeled value for broken refs mmapped_ref_iterator: add iterator over a packed-refs file packed_ref_cache: remember the file-wide peeling state read_packed_refs(): read references with minimal copying read_packed_refs(): make parsing of the header line more robust read_packed_refs(): only check for a header at the top of the file read_packed_refs(): use mmap to read the `packed-refs` file die_unterminated_line(), die_invalid_line(): new functions packed_ref_cache: add a backlink to the associated `packed_ref_store` prefix_ref_iterator: break when we leave the prefix ...
Diffstat (limited to 'Makefile')
-rw-r--r--Makefile6
1 files changed, 6 insertions, 0 deletions
diff --git a/Makefile b/Makefile
index ed4ca438b..b143e4eea 100644
--- a/Makefile
+++ b/Makefile
@@ -205,6 +205,9 @@ all::
#
# Define NO_MMAP if you want to avoid mmap.
#
+# Define MMAP_PREVENTS_DELETE if a file that is currently mmapped cannot be
+# deleted or cannot be replaced using rename().
+#
# Define NO_SYS_POLL_H if you don't have sys/poll.h.
#
# Define NO_POLL if you do not have or don't want to use poll().
@@ -1391,6 +1394,9 @@ else
COMPAT_OBJS += compat/win32mmap.o
endif
endif
+ifdef MMAP_PREVENTS_DELETE
+ BASIC_CFLAGS += -DMMAP_PREVENTS_DELETE
+endif
ifdef OBJECT_CREATION_USES_RENAMES
COMPAT_CFLAGS += -DOBJECT_CREATION_MODE=1
endif