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d06055501b
Create another thread to watch over the daemon process and automatically shut it down if necessary. This commit creates the basic framework for a "health" thread to monitor the daemon and/or the file system. Later commits will add platform-specific code to do the actual work. The "health" thread is intended to monitor conditions that would be difficult to track inside the IPC thread pool and/or the file system listener threads. For example, when there are file system events outside of the watched worktree root or if we want to have an idle-timeout auto-shutdown feature. This commit creates the health thread itself, defines the thread-proc and sets up the thread's event loop. It integrates this new thread into the existing IPC and Listener thread models. This commit defines the API to the platform-specific code where all of the monitoring will actually happen. The platform-specific code for MacOS is just stubs. Meaning that the health thread will immediately exit on MacOS, but that is OK and expected. Future work can define MacOS-specific monitoring. The platform-specific code for Windows sets up enough of the WaitForMultipleObjects() machinery to watch for system and/or custom events. Currently, the set of wait handles only includes our custom shutdown event (sent from our other theads). Later commits in this series will extend the set of wait handles to monitor other conditions. Signed-off-by: Jeff Hostetler <jeffhost@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com> |
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Contributed Software Although these pieces are available as part of the official git source tree, they are in somewhat different status. The intention is to keep interesting tools around git here, maybe even experimental ones, to give users an easier access to them, and to give tools wider exposure, so that they can be improved faster. I am not expecting to touch these myself that much. As far as my day-to-day operation is concerned, these subdirectories are owned by their respective primary authors. I am willing to help if users of these components and the contrib/ subtree "owners" have technical/design issues to resolve, but the initiative to fix and/or enhance things _must_ be on the side of the subtree owners. IOW, I won't be actively looking for bugs and rooms for enhancements in them as the git maintainer -- I may only do so just as one of the users when I want to scratch my own itch. If you have patches to things in contrib/ area, the patch should be first sent to the primary author, and then the primary author should ack and forward it to me (git pull request is nicer). This is the same way as how I have been treating gitk, and to a lesser degree various foreign SCM interfaces, so you know the drill. I expect that things that start their life in the contrib/ area to graduate out of contrib/ once they mature, either by becoming projects on their own, or moving to the toplevel directory. On the other hand, I expect I'll be proposing removal of disused and inactive ones from time to time. If you have new things to add to this area, please first propose it on the git mailing list, and after a list discussion proves there are some general interests (it does not have to be a list-wide consensus for a tool targeted to a relatively narrow audience -- for example I do not work with projects whose upstream is svn, so I have no use for git-svn myself, but it is of general interest for people who need to interoperate with SVN repositories in a way git-svn works better than git-svnimport), submit a patch to create a subdirectory of contrib/ and put your stuff there. -jc