101 lines
3.3 KiB
Python
Vendored
101 lines
3.3 KiB
Python
Vendored
# MIT License
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#
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# Copyright The SCons Foundation
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#
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# Permission is hereby granted, free of charge, to any person obtaining
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# a copy of this software and associated documentation files (the
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# "Software"), to deal in the Software without restriction, including
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# without limitation the rights to use, copy, modify, merge, publish,
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# distribute, sublicense, and/or sell copies of the Software, and to
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# permit persons to whom the Software is furnished to do so, subject to
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# the following conditions:
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#
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# The above copyright notice and this permission notice shall be included
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# in all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
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# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
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# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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"""Logic to replicate parts of pywin32 SCons uses."""
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__all__ = ['get_current_process', 'get_memory_info', 'get_memory_usage', 'get_peak_memory_usage']
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import ctypes
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from ctypes import wintypes
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#
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# From Activestate Recipe
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# https://code.activestate.com/recipes/578513-get-memory-usage-of-windows-processes-using-getpro/
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# MIT licensed
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#
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GetCurrentProcess = ctypes.windll.kernel32.GetCurrentProcess
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GetCurrentProcess.argtypes = []
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GetCurrentProcess.restype = wintypes.HANDLE
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SIZE_T = ctypes.c_size_t
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class PROCESS_MEMORY_COUNTERS_EX(ctypes.Structure):
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_fields_ = [
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('cb', wintypes.DWORD),
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('PageFaultCount', wintypes.DWORD),
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('PeakWorkingSetSize', SIZE_T),
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('WorkingSetSize', SIZE_T),
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('QuotaPeakPagedPoolUsage', SIZE_T),
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('QuotaPagedPoolUsage', SIZE_T),
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('QuotaPeakNonPagedPoolUsage', SIZE_T),
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('QuotaNonPagedPoolUsage', SIZE_T),
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('PagefileUsage', SIZE_T),
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('PeakPagefileUsage', SIZE_T),
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('PrivateUsage', SIZE_T),
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]
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GetProcessMemoryInfo = ctypes.windll.psapi.GetProcessMemoryInfo
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GetProcessMemoryInfo.argtypes = [
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wintypes.HANDLE,
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ctypes.POINTER(PROCESS_MEMORY_COUNTERS_EX),
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wintypes.DWORD,
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]
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GetProcessMemoryInfo.restype = wintypes.BOOL
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def get_current_process():
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"""Return handle to current process."""
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return GetCurrentProcess()
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def get_memory_info(process=None):
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"""Return Win32 process memory counters structure as a dict."""
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if process is None:
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process = get_current_process()
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counters = PROCESS_MEMORY_COUNTERS_EX()
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ret = GetProcessMemoryInfo(process, ctypes.byref(counters),
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ctypes.sizeof(counters))
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if not ret:
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raise ctypes.WinError()
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info = {name: getattr(counters, name)
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for name, _ in counters._fields_}
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return info
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def get_memory_usage(process=None):
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"""Return this process's memory usage in bytes."""
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info = get_memory_info(process=process)
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return info['PrivateUsage']
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def get_peak_memory_usage(process=None):
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"""Return this process's memory usage in bytes."""
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info = get_memory_info(process=process)
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return info['PeakWorkingSetSize']
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if __name__ == '__main__':
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import pprint
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pprint.pprint(get_memory_info())
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