fsmonitor: add new watchman notifications to fsmonitor extension
The fsmonitor extension currently sends state-enter and state-leave
notifications to watchman on the update operation. This commit creates
additional notifications for the following events :
- transaction creation and commit/abort. A state-enter notification will be
sent when a transaction is created. It will provide the working copy
parent's hash. A state-leave notification will be sent when the
transaction is committed or aborted. It will provide the working copy
parent's hash.
- calls to set-parent will cause state-enter and state-leave notifications
to be sent. The state-enter notification will be sent prior to the
set-parent operation and the working copy parent's hash will be provided at
this time. The state-leave notification will be sent after the set-parent
operation completes providing the working copy parents hash.
Test Plan:
tested on dev server to check that necessary notifications were sent/received
Differential Revision: https://phab.mercurial-scm.org/D989
$ hg init
$ mkdir alpha
$ touch alpha/one
$ mkdir beta
$ touch beta/two
$ hg add alpha/one beta/two
$ hg ci -m "start"
$ echo 1 > alpha/one
$ echo 2 > beta/two
everything
$ hg diff --nodates
diff -r 7d5ef1aea329 alpha/one
--- a/alpha/one
+++ b/alpha/one
@@ -0,0 +1,1 @@
+1
diff -r 7d5ef1aea329 beta/two
--- a/beta/two
+++ b/beta/two
@@ -0,0 +1,1 @@
+2
beta only
$ hg diff --nodates beta
diff -r 7d5ef1aea329 beta/two
--- a/beta/two
+++ b/beta/two
@@ -0,0 +1,1 @@
+2
inside beta
$ cd beta
$ hg diff --nodates .
diff -r 7d5ef1aea329 beta/two
--- a/beta/two
+++ b/beta/two
@@ -0,0 +1,1 @@
+2
relative to beta
$ cd ..
$ hg diff --nodates --root beta
diff -r 7d5ef1aea329 two
--- a/two
+++ b/two
@@ -0,0 +1,1 @@
+2
inside beta
$ cd beta
$ hg diff --nodates --root .
diff -r 7d5ef1aea329 two
--- a/two
+++ b/two
@@ -0,0 +1,1 @@
+2
$ cd ..