mirror of
https://github.com/kovidgoyal/calibre.git
synced 2025-06-03 13:44:13 -04:00
96 lines
2.8 KiB
Python
96 lines
2.8 KiB
Python
#!/usr/bin/env python2
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# vim:fileencoding=utf-8
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from __future__ import (unicode_literals, division, absolute_import,
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print_function)
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__license__ = 'GPL v3'
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__copyright__ = '2014, Kovid Goyal <kovid at kovidgoyal.net>'
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import subprocess
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from multiprocessing.dummy import Pool
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from functools import partial
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from contextlib import closing
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from setup import iswindows
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from polyglot.builtins import unicode_type
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if iswindows:
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from ctypes import windll, Structure, POINTER, c_size_t
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from ctypes.wintypes import WORD, DWORD, LPVOID
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class SYSTEM_INFO(Structure):
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_fields_ = [
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("wProcessorArchitecture", WORD),
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("wReserved", WORD),
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("dwPageSize", DWORD),
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("lpMinimumApplicationAddress", LPVOID),
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("lpMaximumApplicationAddress", LPVOID),
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("dwActiveProcessorMask", c_size_t),
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("dwNumberOfProcessors", DWORD),
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("dwProcessorType", DWORD),
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("dwAllocationGranularity", DWORD),
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("wProcessorLevel", WORD),
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("wProcessorRevision", WORD)]
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gsi = windll.kernel32.GetSystemInfo
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gsi.argtypes = [POINTER(SYSTEM_INFO)]
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gsi.restype = None
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si = SYSTEM_INFO()
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gsi(si)
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cpu_count = si.dwNumberOfProcessors
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else:
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from multiprocessing import cpu_count
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try:
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cpu_count = cpu_count()
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except NotImplementedError:
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cpu_count = 1
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cpu_count = min(16, max(1, cpu_count))
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def run_worker(job, decorate=True):
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cmd, human_text = job
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human_text = human_text or ' '.join(cmd)
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try:
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p = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
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except Exception as err:
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return False, human_text, unicode_type(err)
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stdout, stderr = p.communicate()
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if stdout:
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stdout = stdout.decode('utf-8')
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if stderr:
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stderr = stderr.decode('utf-8')
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if decorate:
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stdout = human_text + '\n' + (stdout or '')
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ok = p.returncode == 0
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return ok, stdout, (stderr or '')
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def create_job(cmd, human_text=None):
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return (cmd, human_text)
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def parallel_build(jobs, log, verbose=True):
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p = Pool(cpu_count)
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with closing(p):
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for ok, stdout, stderr in p.imap(run_worker, jobs):
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if verbose or not ok:
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log(stdout)
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if stderr:
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log(stderr)
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if not ok:
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return False
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return True
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def parallel_check_output(jobs, log):
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p = Pool(cpu_count)
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with closing(p):
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for ok, stdout, stderr in p.imap(
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partial(run_worker, decorate=False), ((j, '') for j in jobs)):
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if not ok:
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log(stdout)
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if stderr:
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log(stderr)
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raise SystemExit(1)
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yield stdout
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