We have a couple of patch series we’re working on (ObjectDB/Read-Object,
Watchman integration) where we need the ability to have a background
process running that can accept multiple commands thus avoiding the
overhead of spawning a new process for every command.

The ability to do this was added in:

	Commit edcc85814c ("convert: add filter.<driver>.process option", 2016-10-16)
	keeps the external process running and processes all commands

but it is integrated into the convert code.  This patch series takes the
code from convert.c and refactors it into a separate "sub-process"
module so that we can centralize and reuse this logic in other areas.

Ben Peart (2):
  pkt-line: add packet_writel() and packet_read_line_gently()
  sub-process: refactor the filter process code into a reusable module

 Documentation/technical/api-sub-process.txt |  54 ++++++++++
 Makefile                                    |   1 +
 convert.c                                   | 160 ++++++----------------------
 pkt-line.c                                  |  31 ++++++
 pkt-line.h                                  |  11 ++
 sub-process.c                               | 117 ++++++++++++++++++++
 sub-process.h                               |  46 ++++++++
 7 files changed, 290 insertions(+), 130 deletions(-)
 create mode 100644 Documentation/technical/api-sub-process.txt
 create mode 100644 sub-process.c
 create mode 100644 sub-process.h

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