mirror of
https://github.com/klzgrad/naiveproxy.git
synced 2024-11-24 06:16:30 +03:00
85 lines
2.8 KiB
Python
85 lines
2.8 KiB
Python
# Copyright 2014 The Chromium Authors. All rights reserved.
|
|
# Use of this source code is governed by a BSD-style license that can be
|
|
# found in the LICENSE file.
|
|
|
|
# This script computs the number of concurrent links we want to run in the build
|
|
# as a function of machine spec. It's based on GetDefaultConcurrentLinks in GYP.
|
|
|
|
import multiprocessing
|
|
import optparse
|
|
import os
|
|
import re
|
|
import subprocess
|
|
import sys
|
|
|
|
def _GetTotalMemoryInBytes():
|
|
if sys.platform in ('win32', 'cygwin'):
|
|
import ctypes
|
|
|
|
class MEMORYSTATUSEX(ctypes.Structure):
|
|
_fields_ = [
|
|
("dwLength", ctypes.c_ulong),
|
|
("dwMemoryLoad", ctypes.c_ulong),
|
|
("ullTotalPhys", ctypes.c_ulonglong),
|
|
("ullAvailPhys", ctypes.c_ulonglong),
|
|
("ullTotalPageFile", ctypes.c_ulonglong),
|
|
("ullAvailPageFile", ctypes.c_ulonglong),
|
|
("ullTotalVirtual", ctypes.c_ulonglong),
|
|
("ullAvailVirtual", ctypes.c_ulonglong),
|
|
("sullAvailExtendedVirtual", ctypes.c_ulonglong),
|
|
]
|
|
|
|
stat = MEMORYSTATUSEX(dwLength=ctypes.sizeof(MEMORYSTATUSEX))
|
|
ctypes.windll.kernel32.GlobalMemoryStatusEx(ctypes.byref(stat))
|
|
return stat.ullTotalPhys
|
|
elif sys.platform.startswith('linux'):
|
|
if os.path.exists("/proc/meminfo"):
|
|
with open("/proc/meminfo") as meminfo:
|
|
memtotal_re = re.compile(r'^MemTotal:\s*(\d*)\s*kB')
|
|
for line in meminfo:
|
|
match = memtotal_re.match(line)
|
|
if not match:
|
|
continue
|
|
return float(match.group(1)) * 2**10
|
|
elif sys.platform == 'darwin':
|
|
try:
|
|
return int(subprocess.check_output(['sysctl', '-n', 'hw.memsize']))
|
|
except Exception:
|
|
return 0
|
|
# TODO(scottmg): Implement this for other platforms.
|
|
return 0
|
|
|
|
|
|
def _GetDefaultConcurrentLinks(mem_per_link_gb, reserve_mem_gb):
|
|
# Inherit the legacy environment variable for people that have set it in GYP.
|
|
pool_size = int(os.getenv('GYP_LINK_CONCURRENCY', 0))
|
|
if pool_size:
|
|
return pool_size
|
|
|
|
mem_total_bytes = _GetTotalMemoryInBytes()
|
|
mem_total_bytes = max(0, mem_total_bytes - reserve_mem_gb * 2**30)
|
|
num_concurrent_links = int(max(1, mem_total_bytes / mem_per_link_gb / 2**30))
|
|
hard_cap = max(1, int(os.getenv('GYP_LINK_CONCURRENCY_MAX', 2**32)))
|
|
|
|
try:
|
|
cpu_cap = multiprocessing.cpu_count()
|
|
except:
|
|
cpu_cap = 1
|
|
|
|
return min(num_concurrent_links, hard_cap, cpu_cap)
|
|
|
|
|
|
def main():
|
|
parser = optparse.OptionParser()
|
|
parser.add_option('--mem_per_link_gb', action="store", type="int", default=8)
|
|
parser.add_option('--reserve_mem_gb', action="store", type="int", default=0)
|
|
parser.disable_interspersed_args()
|
|
options, _ = parser.parse_args()
|
|
|
|
print _GetDefaultConcurrentLinks(options.mem_per_link_gb,
|
|
options.reserve_mem_gb)
|
|
return 0
|
|
|
|
if __name__ == '__main__':
|
|
sys.exit(main())
|