rtems-source-builder/source-builder/sb/bootstrap.py

#
# RTEMS Tools Project (http://www.rtems.org/)
# Copyright 2013 Chris Johns (chrisj@rtems.org)
# All rights reserved.
#
# This file is part of the RTEMS Tools package in 'rtems-tools'.
#
# Permission to use, copy, modify, and/or distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
#

import datetime
import operator
import os
import re
import subprocess
import sys
import threading
import time

import error
import log
import options
import path
import version

def _collect(path_, file):
    confs = []
    for root, dirs, files in os.walk(path.host(path_), topdown = True):
        for f in files:
            if f == file:
                confs += [path.shell(path.join(root, f))]
    return confs

class command:

    def __init__(self, cmd, cwd):
        self.exit_code = 0
        self.thread = None
        self.output = None
        self.cmd = cmd
        self.cwd = cwd

    def runner(self):
        self.start_time = datetime.datetime.now()
        self.exit_code = 0
        try:
            self.output = subprocess.check_output(self.cmd, cwd = self.cwd)
        except subprocess.CalledProcessError, cpe:
            self.exit_code = cpe.returncode
            self.output = cpe.output
        self.end_time = datetime.datetime.now()

    def run(self):
        self.thread = threading.Thread(target = self.runner)
        self.thread.start()

    def is_alive(self):
        return self.thread and self.thread.is_alive()

class autoreconf:

    def __init__(self, configure):
        self.configure = configure
        self.cwd = path.dirname(self.configure)
        self.bspopts()
        self.command = command(['autoreconf', '-i', '--no-recursive'], self.cwd)
        self.command.run()

    def bspopts(self):
        try:
            c = open(self.configure, 'r')
            c_lines = c.readlines()
            c.close()
        except IOError, err:
            raise error.general('error reading: %s' % (configure))
        if 'RTEMS_CHECK_BSPDIR' in c_lines:
            bsp_specs = _collect(self.cwd, 'bsp_specs')
            try:
                acinclude = path.join(self.cwd, acinclude.m4)
                b = open(acinclude, 'w')
                b.write('# RTEMS_CHECK_BSPDIR(RTEMS_BSP_FAMILY) ')
                b.write('AC_DEFUN([RTEMS_CHECK_BSPDIR],')
                b.write('[')
                b.write(' case "$1" in')
                for bs in bsp_specs:
                    b.write('   %s )' % (path.dirname(bs)))
                    b.write('     AC_CONFIG_SUBDIRS([%s]);;' % (path.dirname(bs)))
                b.write('  *)')
                b.write('    AC_MSG_ERROR([Invalid BSP]);;')
                b.write('  esac')
                b.write('])')
                b.close()
            except IOError, err:
                raise error.general('error writing: %s' % (acinclude))

    def is_alive(self):
        return self.command.is_alive()

    def post_process(self):
        if self.command is not None:
            if self.command.exit_code != 0:
                raise error.general('error: autoreconf: %s' % (' '.join(self.command.cmd)))

def generate(topdir, jobs):
    if type(jobs) is str:
        jobs = int(jobs)
    start_time = datetime.datetime.now()
    confs = _collect(topdir, 'configure.ac')
    next = 0
    autoreconfs = []
    while next < len(confs) or len(autoreconfs) > 0:
        if next < len(confs) and len(autoreconfs) < jobs:
            log.notice('%3d/%3d: autoreconf: %s' % \
                           (next + 1, len(confs), confs[next][len(topdir) + 1:]))
            autoreconfs += [autoreconf(confs[next])]
            next += 1
        else:
            for ac in autoreconfs:
                if not ac.is_alive():
                    ac.post_process()
                    autoreconfs.remove(ac)
                    del ac
            if len(autoreconfs) >= jobs:
                time.sleep(1)
    end_time = datetime.datetime.now()
    log.notice('Bootstrap time: %s' % (str(end_time - start_time)))

class ampolish3:

    def __init__(self, topdir, makefile):
        self.makefile = makefile
        self.topdir = topdir
        self.preinstall = path.join(path.dirname(makefile), 'preinstall.am')
        self.command = command([path.join(topdir, 'ampolish3'), makefile], self.topdir)
        self.command.run()

    def is_alive(self):
        return self.command.is_alive()

    def post_process(self):
        if self.command is not None:
            if self.command.exit_code != 0:
                raise error.general('error: ampolish3: %s' % (' '.join(self.command.cmd)))
            try:
                p = open(self.preinstall, 'w')
                for l in self.command.output:
                    p.write(l)
                p.close()
            except IOError, err:
                raise error.general('error writing: %s' % (self.preinstall))

def preinstall(topdir, jobs):
    if type(jobs) is str:
        jobs = int(jobs)
    start_time = datetime.datetime.now()
    makes = []
    pre = re.compile('include .*/preinstall\.am')
    for am in _collect(topdir, 'Makefile.am'):
        try:
            m = open(am, 'r')
            am_lines = m.readlines()
            m.close()
        except IOError, err:
            raise error.general('error reading: %s' % (am))
        ml = [pre.match(l) != None for l in am_lines]
        if True in ml:
            makes += [am]
    next = 0
    ampolish3s = []
    while next < len(makes) or len(ampolish3s) > 0:
        if next < len(makes) and len(ampolish3s) < jobs:
            log.notice('%3d/%3d: ampolish3: %s' % \
                           (next + 1, len(makes), makes[next][len(topdir) + 1:]))
            ampolish3s += [ampolish3(topdir, makes[next])]
            next += 1
        else:
            for ap in ampolish3s:
                if not ap.is_alive():
                    ap.post_process()
                    ampolish3s.remove(ap)
                    del ap
            if len(ampolish3s) >= jobs:
                time.sleep(1)
    end_time = datetime.datetime.now()
    log.notice('Preinstall time: %s' % (str(end_time - start_time)))

def run(args):
    try:
        optargs = { '--rtems':       'The RTEMS source directory',
                    '--preinstall':  'Preinstall AM generation' }
        log.notice('RTEMS Source Builder - RTEMS Bootstrap, v%s' % (version.str()))
        opts = options.load(sys.argv, optargs)
        if opts.get_arg('--rtems'):
            topdir = opts.get_arg('--rtems')
        else:
            topdir = os.getcwd()
        if opts.get_arg('--preinstall'):
            preinstall(topdir, opts.defaults['_ncpus'])
        else:
            generate(topdir, opts.defaults['_ncpus'])
    except error.general, gerr:
        print gerr
        print >> sys.stderr, 'Bootstrap FAILED'
        sys.exit(1)
    except error.internal, ierr:
        print ierr
        print >> sys.stderr, 'Bootstrap FAILED'
        sys.exit(1)
    except error.exit, eerr:
        pass
    except KeyboardInterrupt:
        log.notice('abort: user terminated')
        sys.exit(1)
    sys.exit(0)

if __name__ == "__main__":
    run(sys.argv)