mariadb

Tree: 9d58141cdc

Author	SHA1	Message	Date
unknown	87aa4ae2d3	just comment changes and line formatting changes. storage/maria/checkpoint.c: comments storage/maria/least_recently_dirtied.c: comments storage/maria/ma_check.c: line formatting changes neglected from my last merge storage/maria/ma_ft_parser.c: it reduces the diff of MyISAM vs Maria :) storage/maria/recovery.c: comments	20 years ago
unknown	e6efa27c0b	Writing down MikaelR's comments made in May in Helsinki so that they are not forgotten. Minor fixes. storage/maria/checkpoint.c: minor fixes storage/maria/least_recently_dirtied.c: writing down MikaelR's comments. storage/maria/recovery.c: writing down MikaelR's comments. Some small fixes.	20 years ago
unknown	30e5a9bd1b	Post-vacation-musing fixes to WL#3071 "Maria checkpoint": changes to how synchronous checkpoint requests are executed. changes to how the background LRD flushing thread refrains from using all resources. See more comments for each file. storage/maria/checkpoint.c: I was not happy that checkpoint requests which want to know the success/error of their executed request, get inaccurate information in case of error (no error string etc). Instead of implementing a more complete communication protocol between requestor and executor, I make the requestor do the execution itself. I call this a synchronous checkpoint. For asynchronous checkpoints (requestor does not want to know success/error, does not want to wait for completion), no change, checkpoint is executed by the background thread. Comments, constants, mutex usage fixes. storage/maria/checkpoint.h: new prototype of "API" (the calls exposed by the checkpoint module) storage/maria/least_recently_dirtied.c: A better solution than sleeping one second after flushing a piece of the LRD: instead we pthread_yield(). Hopefully this will slow down the background thread (avoiding it using all the disk's bandwidth) if there are other threads competing, and will not slow it down if this thread is alone (where we do want it to run fast and not do useless sleeps). This thread will probe for asynchronous checkpoint requests every few seconds.	20 years ago
unknown	06f7675b95	Maria: first version of checkpoint (WL#3071), least-recently-dirtied page flushing (WL#3261), recovery (WL#3072), control file (WL#3234), to serve as a detailed LLD. It looks like C code, but does not compile (no point in making it compile, as other modules on which I depend are not yet fully speficied or written); some pieces are not coded and just marked in comments. Files' organization (names, directories of C files) does not matter at this point. I don't think I had to commit so early, but it feels good to publish something, gives me the impression of moving forward :) storage/maria/checkpoint.c: WL#3071 Maria checkpoint, implementation storage/maria/checkpoint.h: WL#3071 Maria checkpoint, interface storage/maria/control_file.c: WL#3234 Maria control file, implementation storage/maria/control_file.h: WL#3234 Maria control file, interface storage/maria/least_recently_dirtied.c: WL#3261 Maria background flushing of least-recently-dirtied pages, implementation storage/maria/least_recently_dirtied.h: WL#3261 Maria background flushing of least-recently-dirtied pages, interface storage/maria/recovery.c: WL#3072 Maria recovery, implementation storage/maria/recovery.h: WL#3072 Maria recovery, interface	20 years ago

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56 Commits (9d58141cdc995518eed0352b0aa7a1d488a1cc05)