This patch series changes most of the places where the ref functions for
locking and writing refs to instead use the new ref transaction API. There
are still three more places where write_ref_sha1() is called from outside
of refs.c but those all will require more complex work and review so those
changes belong in a different patch series.
Version 2:
- Add a patch to ref_transaction_commit to make it honor onerr even if the
error triggered in ref_Transaction_commit itself rather than in a call
to other functions (that already honor onerr).
- Add a patch to make the update_ref() helper function use transactions
internally.
- Change ref_transaction_update to die() instead of error() if we pass
if a NULL old_sha1 but have have_old == true.
- Change ref_transaction_create to die() instead of error() if new_sha1
is false but we pass it a null_sha1.
- Change ref_transaction_delete die() instead of error() if we pass
if a NULL old_sha1 but have have_old == true.
- Change several places to do if(!transaction || ref_transaction_update()
|| ref_Transaction_commit()) die(generic-message) instead of checking each
step separately and having a different message for each failure.
Most users are likely not interested in what step of the transaction
failed and only whether it failed or not.
- Change commit.c to only pass a pointer to ref_transaction_update
iff current_head is non-NULL.
The previous patch used to compute a garbage pointer for
current_head->object.sha1 and relied on the fact that ref_transaction_update
would not try to dereference this pointer if !!current_head was 0.
- Updated commit message for the walker_fetch change to try to justify why
the change in locking semantics should not be harmful.
Ronnie Sahlberg (13):
refs.c: constify the sha arguments for
ref_transaction_create|delete|update
refs.c: use a single exit path from transaction commit and handle
onerr
refs.c: change ref_transaction_update() to do error checking and
return status
refs.c: change ref_transaction_create to do error checking and return
status
refs.c: ref_transaction_delete to check for error and return status
tag.c: use ref transactions when doing updates
replace.c: use the ref transaction functions for updates
commit.c: use ref transactions for updates
sequencer.c: use ref transactions for all ref updates
fast-import.c: change update_branch to use ref transactions
branch.c: use ref transaction for all ref updates
walker.c: use ref transaction for ref updates
refs.c: change update_ref to use a transaction
branch.c | 16 ++++++----
builtin/commit.c | 23 +++++++-------
builtin/replace.c | 13 ++++----
builtin/tag.c | 11 +++----
builtin/update-ref.c | 19 +++++++-----
fast-import.c | 23 +++++++++-----
refs.c | 84 +++++++++++++++++++++++++++++++++++++++-------------
refs.h | 25 ++++++++--------
sequencer.c | 17 ++++++++---
walker.c | 45 +++++++++++++---------------
10 files changed, 172 insertions(+), 104 deletions(-)
--
1.9.1.515.g3b87021
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