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| author |  Martin Ågren <martin.agren@gmail.com> | 2017-10-05 22:32:07 +0200 |
|---|---|---|
| committer |  Junio C Hamano <gitster@pobox.com> | 2017-10-06 10:07:18 +0900 |
| commit | 02ae242fdde2ba8acb6b87e32df2b1e33786e78b (patch) | |
| tree | f251cfa7b4c15c5fa52cc713d15299578235d58b /builtin/checkout-index.c | |
| parent | tempfile: fix documentation on `delete_tempfile()` (diff) | |
| download | tgif-02ae242fdde2ba8acb6b87e32df2b1e33786e78b.tar.xz | |
checkout-index: simplify locking logic
`newfd` starts out negative. If we then take the lock, `newfd` will
become non-negative. We later check for exactly that property before
calling `write_locked_index()`. That is, we are simply using `newfd` as
a boolean to keep track of whether we took the lock or not. (We always
use `newfd` and `lock_file` together, so they really are mirroring each
other.)
Drop `newfd` and check with `is_lock_file_locked()` instead. While at
it, move the `static struct lock_file` into `cmd_checkout_index()` and
make it non-static. It is only used in this function, and after
076aa2cbd (tempfile: auto-allocate tempfiles on heap, 2017-09-05), we
can have lockfiles on the stack.
Signed-off-by: Martin Ågren <martin.agren@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'builtin/checkout-index.c')
| -rw-r--r-- | builtin/checkout-index.c | 8 |
1 files changed, 3 insertions, 5 deletions
diff --git a/builtin/checkout-index.c b/builtin/checkout-index.c index 39c8be05dc..b0e78b819d 100644 --- a/builtin/checkout-index.c +++ b/builtin/checkout-index.c @@ -129,8 +129,6 @@ static const char * const builtin_checkout_index_usage[] = { NULL }; -static struct lock_file lock_file; - static int option_parse_stage(const struct option *opt, const char *arg, int unset) { @@ -150,7 +148,7 @@ static int option_parse_stage(const struct option *opt, int cmd_checkout_index(int argc, const char **argv, const char *prefix) { int i; - int newfd = -1; + struct lock_file lock_file = LOCK_INIT; int all = 0; int read_from_stdin = 0; int prefix_length; @@ -206,7 +204,7 @@ int cmd_checkout_index(int argc, const char **argv, const char *prefix) if (index_opt && !state.base_dir_len && !to_tempfile) { state.refresh_cache = 1; state.istate = &the_index; - newfd = hold_locked_index(&lock_file, LOCK_DIE_ON_ERROR); + hold_locked_index(&lock_file, LOCK_DIE_ON_ERROR); } /* Check out named files first */ @@ -251,7 +249,7 @@ int cmd_checkout_index(int argc, const char **argv, const char *prefix) if (all) checkout_all(prefix, prefix_length); - if (0 <= newfd && + if (is_lock_file_locked(&lock_file) && write_locked_index(&the_index, &lock_file, COMMIT_LOCK)) die("Unable to write new index file"); return 0; |