diff options
| author | Carlos Martín Nieto <cmn@dwim.me> | 2014-06-18 19:13:12 +0400 |
|---|---|---|
| committer | Carlos Martín Nieto <cmn@dwim.me> | 2014-06-23 23:50:36 +0400 |
| commit | b3b66c57930358467395fc3a5bca87edefd25cf4 (patch) | |
| tree | 1ca1c8fd8bf8fd69156c566a83ac12375b427a5e /src/mwindow.h | |
| parent | 1589aa0c4d48fb130d8a5db28c45cd3d173cde6d (diff) | |
Share packs across repository instances
Opening the same repository multiple times will currently open the same
file multiple times, as well as map the same region of the file multiple
times. This is not necessary, as the packfile data is immutable.
Instead of opening and closing packfiles directly, introduce an
indirection and allocate packfiles globally. This does mean locking on
each packfile open, but we already use this lock for the global mwindow
list so it doesn't introduce a new contention point.
Diffstat (limited to 'src/mwindow.h')
| -rw-r--r-- | src/mwindow.h | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/src/mwindow.h b/src/mwindow.h index 0018ebbf0..57fabae70 100644 --- a/src/mwindow.h +++ b/src/mwindow.h @@ -36,10 +36,18 @@ typedef struct git_mwindow_ctl { } git_mwindow_ctl; int git_mwindow_contains(git_mwindow *win, git_off_t offset); -void git_mwindow_free_all(git_mwindow_file *mwf); +void git_mwindow_free_all(git_mwindow_file *mwf); /* locks */ +void git_mwindow_free_all_locked(git_mwindow_file *mwf); /* run under lock */ unsigned char *git_mwindow_open(git_mwindow_file *mwf, git_mwindow **cursor, git_off_t offset, size_t extra, unsigned int *left); int git_mwindow_file_register(git_mwindow_file *mwf); void git_mwindow_file_deregister(git_mwindow_file *mwf); void git_mwindow_close(git_mwindow **w_cursor); +int git_mwindow_files_init(void); +void git_mwindow_files_free(void); + +struct git_pack_file; /* just declaration to avoid cyclical includes */ +int git_mwindow_get_pack(struct git_pack_file **out, const char *path); +int git_mwindow_put_pack(struct git_pack_file *pack); + #endif |