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import threading

import os

import re

import importlib

from .runtime import runtime_info

if runtime_info.GEVENT:

import gevent

class FrameCache(object):

MAX_CACHE_SIZE = 2500

def __init__(self, agent):

self.agent = agent

self.agent_frame_cache = None

self.system_frame_cache = None

self.include_agent_frames = None

self.include_system_frames = None

self.agent_dir = os.path.dirname(os.path.realpath(__file__))

self.system_dir = os.path.dirname(os.path.realpath(threading.__file__))

if runtime_info.GEVENT:

self.gevent_dir = os.path.dirname(os.path.realpath(gevent.__file__))

def start(self):

self.agent_frame_cache = dict()

self.system_frame_cache = dict()

self.include_agent_frames = self.agent.get_option('include_agent_frames')

self.include_system_frames = self.agent.get_option('include_system_frames')

def stop(self):

pass

def is_agent_frame(self, filename):

if filename in self.agent_frame_cache:

return self.agent_frame_cache[filename]

agent_frame = False

if not self.include_agent_frames:

if filename.startswith(self.agent_dir):

agent_frame = True

if len(self.agent_frame_cache) < self.MAX_CACHE_SIZE:

self.agent_frame_cache[filename] = agent_frame

return agent_frame

def is_system_frame(self, filename):

if filename in self.system_frame_cache:

return self.system_frame_cache[filename]

system_frame = False

if not self.include_system_frames:

if (filename.startswith(self.system_dir) or

(runtime_info.GEVENT and filename.startswith(self.gevent_dir))):

system_frame = True

if len(self.system_frame_cache) < self.MAX_CACHE_SIZE:

self.system_frame_cache[filename] = system_frame

return system_frame

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