When disabling profiling, the log of samples written is read back in by LogReaderDumpNative to construct a deduplicated set of all code addresses that were recorded during sampling. This set is then passed to _vmprof.write_all_code_objects to write out the address and file/symbol info.
However if the last call to commit_buffer is a short write (for example because it was interrupted by a signal), then the LogReader may not be able to parse the tail of the file because we may still have pending un-flushed buffers (see: _write_single_ready_buffer).
This change adds a function to ensure all pending buffers are flushed to disk before attempting to reread them with the LogReader.
When disabling profiling, the log of samples written is read back in by
LogReaderDumpNativeto construct a deduplicated set of all code addresses that were recorded during sampling. This set is then passed to_vmprof.write_all_code_objectsto write out the address and file/symbol info.However if the last call to
commit_bufferis a short write (for example because it was interrupted by a signal), then the LogReader may not be able to parse the tail of the file because we may still have pending un-flushed buffers (see:_write_single_ready_buffer).This change adds a function to ensure all pending buffers are flushed to disk before attempting to reread them with the LogReader.