483f5218b9
This version fixes a regression with regard to tradtional behavior of the non-standard FreeBSD option "-e". In the previous version "-e quit" caused bc to exit before any computations had been performed, since all -e option parameters were concatenated and parsed as a whole, with quit causing the program to exit as soon as it was parsed. This version parses and executes commands passed with -e one by one and only exits after all prior commands have been executed. This commit is not a SVN merge, since the vendor import had been performed after the import to contrib. Instead the contents of contrib/bc has been removed and the new version is copied over unchanged from vendor/bc/dist.
233 lines
6.0 KiB
Python
Executable File
233 lines
6.0 KiB
Python
Executable File
#! /usr/bin/python3 -B
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#
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# SPDX-License-Identifier: BSD-2-Clause
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#
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# Copyright (c) 2018-2020 Gavin D. Howard and contributors.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are met:
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#
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# * Redistributions of source code must retain the above copyright notice, this
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# list of conditions and the following disclaimer.
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#
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# * Redistributions in binary form must reproduce the above copyright notice,
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# this list of conditions and the following disclaimer in the documentation
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# and/or other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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#
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import os
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import sys
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import subprocess
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import time
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def usage():
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print("usage: {} [num_iterations test_num exe]".format(script))
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print("\n num_iterations is the number of times to run each karatsuba number; default is 4")
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print("\n test_num is the last Karatsuba number to run through tests")
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sys.exit(1)
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def run(cmd, env=None):
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return subprocess.run(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE, env=env)
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script = sys.argv[0]
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testdir = os.path.dirname(script)
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if testdir == "":
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testdir = os.getcwd()
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print("\nWARNING: This script is for distro and package maintainers.")
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print("It is for finding the optimal Karatsuba number.")
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print("Though it only needs to be run once per release/platform,")
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print("it takes forever to run.")
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print("You have been warned.\n")
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print("Note: If you send an interrupt, it will report the current best number.\n")
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if __name__ != "__main__":
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usage()
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mx = 520
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mx2 = mx // 2
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mn = 16
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num = "9" * mx
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args_idx = 4
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if len(sys.argv) >= 2:
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num_iterations = int(sys.argv[1])
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else:
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num_iterations = 4
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if len(sys.argv) >= 3:
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test_num = int(sys.argv[2])
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else:
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test_num = 0
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if len(sys.argv) >= args_idx:
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exe = sys.argv[3]
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else:
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exe = testdir + "/bin/bc"
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exedir = os.path.dirname(exe)
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indata = "for (i = 0; i < 100; ++i) {} * {}\n"
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indata += "1.23456789^100000\n1.23456789^100000\nhalt"
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indata = indata.format(num, num).encode()
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times = []
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nums = []
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runs = []
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nruns = num_iterations + 1
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for i in range(0, nruns):
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runs.append(0)
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tests = [ "multiply", "modulus", "power", "sqrt" ]
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scripts = [ "multiply" ]
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print("Testing CFLAGS=\"-flto\"...")
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flags = dict(os.environ)
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try:
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flags["CFLAGS"] = flags["CFLAGS"] + " " + "-flto"
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except KeyError:
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flags["CFLAGS"] = "-flto"
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p = run([ "./configure.sh", "-O3" ], flags)
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if p.returncode != 0:
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print("configure.sh returned an error ({}); exiting...".format(p.returncode))
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sys.exit(p.returncode)
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p = run([ "make" ])
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if p.returncode == 0:
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config_env = flags
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print("Using CFLAGS=\"-flto\"")
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else:
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config_env = os.environ
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print("Not using CFLAGS=\"-flto\"")
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p = run([ "make", "clean" ])
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print("Testing \"make -j4\"")
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if p.returncode != 0:
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print("make returned an error ({}); exiting...".format(p.returncode))
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sys.exit(p.returncode)
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p = run([ "make", "-j4" ])
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if p.returncode == 0:
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makecmd = [ "make", "-j4" ]
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print("Using \"make -j4\"")
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else:
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makecmd = [ "make" ]
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print("Not using \"make -j4\"")
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if test_num != 0:
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mx2 = test_num
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try:
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for i in range(mn, mx2 + 1):
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print("\nCompiling...\n")
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p = run([ "./configure.sh", "-O3", "-k{}".format(i) ], config_env)
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if p.returncode != 0:
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print("configure.sh returned an error ({}); exiting...".format(p.returncode))
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sys.exit(p.returncode)
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p = run(makecmd)
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if p.returncode != 0:
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print("make returned an error ({}); exiting...".format(p.returncode))
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sys.exit(p.returncode)
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if (test_num >= i):
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print("Running tests for Karatsuba Num: {}\n".format(i))
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for test in tests:
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cmd = [ "{}/tests/test.sh".format(testdir), "bc", test, "0", "0", exe ]
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p = subprocess.run(cmd + sys.argv[args_idx:], stderr=subprocess.PIPE)
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if p.returncode != 0:
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print("{} test failed:\n".format(test, p.returncode))
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print(p.stderr.decode())
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print("\nexiting...")
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sys.exit(p.returncode)
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print("")
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for script in scripts:
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cmd = [ "{}/tests/script.sh".format(testdir), "bc", script + ".bc",
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"0", "1", "1", "0", exe ]
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p = subprocess.run(cmd + sys.argv[args_idx:], stderr=subprocess.PIPE)
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if p.returncode != 0:
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print("{} test failed:\n".format(test, p.returncode))
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print(p.stderr.decode())
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print("\nexiting...")
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sys.exit(p.returncode)
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print("")
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elif test_num == 0:
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print("Timing Karatsuba Num: {}".format(i), end='', flush=True)
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for j in range(0, nruns):
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cmd = [ exe, "{}/tests/bc/power.txt".format(testdir) ]
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start = time.perf_counter()
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p = subprocess.run(cmd, input=indata, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
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end = time.perf_counter()
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if p.returncode != 0:
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print("bc returned an error; exiting...")
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sys.exit(p.returncode)
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runs[j] = end - start
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run_times = runs[1:]
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avg = sum(run_times) / len(run_times)
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times.append(avg)
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nums.append(i)
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print(", Time: {}".format(times[i - mn]))
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except KeyboardInterrupt:
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nums = nums[0:i]
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times = times[0:i]
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if test_num == 0:
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opt = nums[times.index(min(times))]
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print("\n\nOptimal Karatsuba Num (for this machine): {}".format(opt))
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print("Run the following:\n")
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if "-flto" in config_env["CFLAGS"]:
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print("CFLAGS=\"-flto\" ./configure.sh -O3 -k {}".format(opt))
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else:
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print("./configure.sh -O3 -k {}".format(opt))
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print("make")
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