Documentation
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Overview ¶
Command testresize is a utility used by the lmdbsync tests to validate its multiprocessing capabilities. An external command like testresize command is required because a process is not allowed to map the same process twice.
Testresize writes batches of updates into a databaes, transparently handling any lmdb.MapResized or lmdb.MapFull errors that occur. To ensure that resizing behavior is observed testresize waits for input before updating the environment and writes a line to stdout after the update is committed. If testresize process observes zero of either error it will exit with a non-zero exit code.
Two testresize processes can communicate to each other using two unix pipes, if the output of each pipe is connected to the input of the other. Writing a single line to one of the pipes will cause updates to ping-pong back and forth between processes.
Source Files