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209 lines (188 loc) · 7.98 KB
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# Copyright (c) 2012-2014 The CEF Python authors. All rights reserved.
# License: New BSD License.
# Website: http://code.google.com/p/cefpython/
# TODO: fix CefWebURLRequest memory corruption and restore weakrefs
# for PyWebRequest object. Right now getting memory corruption
# when CefRefPtr[CefWebURLRequest] is released after the request
# is completed. The memory corruption manifests itself with the
# "Segmentation Fault" error message or the strange "C function
# name could not be determined in the current C stack frame".
# See this topic on cython-users group:
# https://groups.google.com/d/topic/cython-users/FJZwHhqaCSI/discussion
# After CefWebURLRequest memory corruption is fixed restore weakrefs:
# 1. cdef object g_pyWebRequests = weakref.WeakValueDictionary()
# 2. Add property "cdef object __weakref__" in PyWebRequest
# When using normal dictionary for g_pyWebRequest then the memory
# corruption doesn't occur, but the PyWebRequest and CefWebURLRequest
# objects are never released, thus you have memory leaks, for now
# there is no other solution. See this topic on the CEF Forum:
# http://www.magpcss.org/ceforum/viewtopic.php?f=6&t=10710
cdef object g_pyWebRequests = {}
cdef int g_webRequestMaxId = 0
# ------------------------------------------------------------------------------
# WebRequest
# ------------------------------------------------------------------------------
# Static methods are not allowed in cdef classes,
# that's why we need a wrapper for PyWebRequest.
class WebRequest:
State = {
"Unsent": cef_types.WUR_STATE_UNSENT,
"Started": cef_types.WUR_STATE_STARTED,
"HeadersReceived": cef_types.WUR_STATE_HEADERS_RECEIVED,
"Loading": cef_types.WUR_STATE_LOADING,
"Done": cef_types.WUR_STATE_DONE,
"Error": cef_types.WUR_STATE_ERROR,
"Abort": cef_types.WUR_STATE_ABORT,
}
def __init__(self):
raise Exception("You cannot instantiate WebRequest directly, "
"use WebRequest.CreateWebRequest() static method")
@staticmethod
def CreateWebRequest(request, webRequestClient):
if not isinstance(request, PyRequest):
raise Exception("Invalid request object")
return CreatePyWebRequest(request, webRequestClient)
# ------------------------------------------------------------------------------
# PyWebRequest
# ------------------------------------------------------------------------------
cdef PyWebRequest CreatePyWebRequest(PyRequest request,
object webRequestClient):
global g_pyWebRequests
cdef PyWebRequest webRequest = PyWebRequest(request, webRequestClient)
assert webRequest.webRequestId, "webRequest.webRequestId empty"
g_pyWebRequests[webRequest.webRequestId] = webRequest
return webRequest
cdef PyWebRequest GetPyWebRequest(int webRequestId):
global g_pyWebRequests
if webRequestId in g_pyWebRequests:
return g_pyWebRequests[webRequestId]
return None
cdef class PyWebRequest:
# cdef object __weakref__ # see g_pyWebRequests
cdef int webRequestId
cdef CefRefPtr[CefWebURLRequest] requester
cdef object pyWebRequestClient
def __init__(self, PyRequest pyRequest, object pyWebRequestClient):
global g_webRequestMaxId
g_webRequestMaxId += 1
self.webRequestId = g_webRequestMaxId
cdef CefRefPtr[WebRequestClient] cppWebRequestClient = (
<CefRefPtr[WebRequestClient]?>new WebRequestClient(
self.webRequestId))
self.pyWebRequestClient = pyWebRequestClient
self.requester = <CefRefPtr[CefWebURLRequest]?>(
cef_web_urlrequest_static.CreateWebURLRequest(
pyRequest.cefRequest,
<CefRefPtr[CefWebURLRequestClient]?>(
cppWebRequestClient)))
cdef object GetCallback(self, str funcName):
if hasattr(self.pyWebRequestClient, funcName) and (
callable(getattr(self.pyWebRequestClient, funcName))):
return getattr(self.pyWebRequestClient, funcName)
cpdef py_void Cancel(self):
self.requester.get().Cancel()
cpdef int GetState(self) except *:
return <int>self.requester.get().GetState()
# ------------------------------------------------------------------------------
# WebRequestClient
# ------------------------------------------------------------------------------
cdef public void WebRequestClient_OnStateChange(
int webRequestId,
CefRefPtr[CefWebURLRequest] requester,
cef_types.cef_weburlrequest_state_t state
) except * with gil:
cdef PyWebRequest webRequest
cdef object callback
try:
webRequest = GetPyWebRequest(webRequestId)
if webRequest:
callback = webRequest.GetCallback("OnStateChange")
if callback:
callback(webRequest, <int>state)
except:
(exc_type, exc_value, exc_trace) = sys.exc_info()
sys.excepthook(exc_type, exc_value, exc_trace)
cdef public void WebRequestClient_OnRedirect(
int webRequestId,
CefRefPtr[CefWebURLRequest] requester,
CefRefPtr[CefRequest] request,
CefRefPtr[CefResponse] response
) except * with gil:
cdef PyWebRequest webRequest
cdef object callback
try:
webRequest = GetPyWebRequest(webRequestId)
if webRequest:
callback = webRequest.GetCallback("OnRedirect")
if callback:
callback(webRequest, webRequest.pyRequest,
CreatePyResponse(response))
except:
(exc_type, exc_value, exc_trace) = sys.exc_info()
sys.excepthook(exc_type, exc_value, exc_trace)
cdef public void WebRequestClient_OnHeadersReceived(
int webRequestId,
CefRefPtr[CefWebURLRequest] requester,
CefRefPtr[CefResponse] response
) except * with gil:
cdef PyWebRequest webRequest
cdef object callback
try:
webRequest = GetPyWebRequest(webRequestId)
if webRequest:
callback = webRequest.GetCallback("OnHeadersReceived")
if callback:
callback(webRequest, CreatePyResponse(response))
except:
(exc_type, exc_value, exc_trace) = sys.exc_info()
sys.excepthook(exc_type, exc_value, exc_trace)
cdef public void WebRequestClient_OnProgress(
int webRequestId,
CefRefPtr[CefWebURLRequest] requester,
uint64_t bytesSent,
uint64_t totalBytesToBeSent
) except * with gil:
cdef PyWebRequest webRequest
cdef object callback
try:
webRequest = GetPyWebRequest(webRequestId)
if webRequest:
callback = webRequest.GetCallback("OnProgress")
if callback:
callback(webRequest, bytesSent, totalBytesToBeSent)
except:
(exc_type, exc_value, exc_trace) = sys.exc_info()
sys.excepthook(exc_type, exc_value, exc_trace)
cdef public void WebRequestClient_OnData(
int webRequestId,
CefRefPtr[CefWebURLRequest] requester,
void* data,
int dataLength
) except * with gil:
cdef PyWebRequest webRequest
cdef object callback
try:
webRequest = GetPyWebRequest(webRequestId)
if webRequest:
callback = webRequest.GetCallback("OnData")
if callback:
callback(webRequest, VoidPtrToString(data, dataLength))
except:
(exc_type, exc_value, exc_trace) = sys.exc_info()
sys.excepthook(exc_type, exc_value, exc_trace)
cdef public void WebRequestClient_OnError(
int webRequestId,
CefRefPtr[CefWebURLRequest] requester,
int errorCode
) except * with gil:
cdef PyWebRequest webRequest
cdef object callback
try:
webRequest = GetPyWebRequest(webRequestId)
if webRequest:
callback = webRequest.GetCallback("OnError")
if callback:
callback(webRequest, errorCode)
except:
(exc_type, exc_value, exc_trace) = sys.exc_info()
sys.excepthook(exc_type, exc_value, exc_trace)