Update facil.io version + add common setup script (#3364)

* Update facil.io version + add common setup script

The main relevant difference in the updated facil.io version is the
memory allocator (I wrote a custom memory allocator that should
minimize lock contention).

It's possible to test the new version without the multi-threaded memory
allocator by using:

```sh
export CFLAGS="${CFLAGS} -DFIO_FORCE_MALLOC"
```

I tried testing the dockerfile locally, but couldn’t make it work.

For some reason the vagrant machine refuses to find the tfb command
(`vagrant up` complains with a number of errors as well, this being one
of them).

I might open a separate issue for that, but I’m not sure if it isn’t
something I’m doing wrong.

* Copy app only once

frameworks/C/facil.io/bench_app.c

@@ -1,9 +1,9 @@
/*
This is an incomplete example meant to be used as a benchmark application for
the TechEmpower Framework Benchmarks. See:
This is a short implementation fo the TechEmpower Framework Benchmarks. See:
http://frameworkbenchmarks.readthedocs.io/en/latest/

At the moment it's incomplete and might be broken.
At the moment it's incomplete and only answers the plaintext and json tests
using the full HTTP framework stack (without any DB support).
*/
#include "http.h"

frameworks/C/facil.io/facil.io.dockerfile

@@ -2,19 +2,20 @@ FROM tfb/base:latest

COPY ./ ./

RUN mkdir facil_app && \
    cd facil_app && \
    curl -s -o facil.io.tar.gz -LJO https://api.github.com/repos/boazsegev/facil.io/tarball/0.6.0.beta.6 && \
    tar --strip-components=1 -xzf facil.io.tar.gz
# using a common installation script will allow implementation variations (in future updates)
RUN ./setup-common.sh

# compile test
RUN mkdir facil_app/src && cp bench_app.c facil_app/src
# set compiler to gcc-6 (avoid gcc-4.8.4)... do we need this?
# ENV CC="gcc-6"

# we don't need more than 32K concurrent connections
ENV CFLAGS="-DLIB_SOCK_MAX_CAPACITY=32768"

# compile test
RUN cp -f bench_app.c facil_app/src/app.c

# Build the app
RUN cd facil_app && make -j build

# Run the app
CMD ["./facil_app/tmp/demo", "-p", "8080", "-db \"TFB-database\"", "-w", "-1", "-t", "1"]
CMD ["./facil_app/tmp/demo", "-p", "8080", "-db \"TFB-database\"", "-w", "-1", "-t", "-1"]

frameworks/C/facil.io/setup-common.sh

@@ -0,0 +1,38 @@
#!/bin/bash

# Don't redownload facil.io unless using the FIO_EDGE flag.
if [[ (! -d facil_app) ||  (-n "${FIO_EDGE}") ]] ; then
	# remove existing installation, if any
	if [ -e facil_app ] ; then
		rm -R facil_app
	fi

	# create new installation folder
	mkdir facil_app
	cd facil_app

	#### Download and unpack

	# Download source selection
	# Setting FIO_EDGE will test against the master branch on the development machine. i.e.:
	#     $ FIO_EDGE=1 tfb --mode verify --test facil.io
	if [[ -z "${FIO_EDGE}" ]]; then
	  FIO_URL="https://api.github.com/repos/boazsegev/facil.io/tarball/0.6.0.beta.8"
	else
		echo "INFO: development mode detected, loading facil.io from master."
		FIO_URL="https://github.com/boazsegev/facil.io/archive/master.tar.gz"
	fi
	# Download
	curl -s -o facil.io.tar.gz -LJO $FIO_URL
	# Unpack
	tar --strip-components=1 -xzf facil.io.tar.gz
	if [ $? -ne 0 ]; then echo "Couldn't extract tar."; exit 1; fi
	# Cleanup
	rm facil.io.tar.gz
	./scripts/new/cleanup
	cd ..
fi

# remove any existing source files, such as boiler plate
rm -R facil_app/src
mkdir facil_app/src