You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
91 lines
3.2 KiB
91 lines
3.2 KiB
5 months ago
|
@cython.final
|
||
|
|
@cython.internal
|
||
|
|
cdef class _MemDebug:
|
||
|
|
"""Debugging support for the memory allocation in libxml2.
|
||
|
|
"""
|
||
|
|
def bytes_used(self):
|
||
|
|
"""bytes_used(self)
|
||
|
|
|
||
|
|
Returns the total amount of memory (in bytes) currently used by libxml2.
|
||
|
|
Note that libxml2 constrains this value to a C int, which limits
|
||
|
|
the accuracy on 64 bit systems.
|
||
|
|
"""
|
||
|
|
return tree.xmlMemUsed()
|
||
|
|
|
||
|
|
def blocks_used(self):
|
||
|
|
"""blocks_used(self)
|
||
|
|
|
||
|
|
Returns the total number of memory blocks currently allocated by libxml2.
|
||
|
|
Note that libxml2 constrains this value to a C int, which limits
|
||
|
|
the accuracy on 64 bit systems.
|
||
|
|
"""
|
||
|
|
return tree.xmlMemBlocks()
|
||
|
|
|
||
|
|
def dict_size(self):
|
||
|
|
"""dict_size(self)
|
||
|
|
|
||
|
|
Returns the current size of the global name dictionary used by libxml2
|
||
|
|
for the current thread. Each thread has its own dictionary.
|
||
|
|
"""
|
||
|
|
c_dict = __GLOBAL_PARSER_CONTEXT._getThreadDict(NULL)
|
||
|
|
if c_dict is NULL:
|
||
|
|
raise MemoryError()
|
||
|
|
return tree.xmlDictSize(c_dict)
|
||
|
|
|
||
|
|
def dump(self, output_file=None, byte_count=None):
|
||
|
|
"""dump(self, output_file=None, byte_count=None)
|
||
|
|
|
||
|
|
Dumps the current memory blocks allocated by libxml2 to a file.
|
||
|
|
|
||
|
|
The optional parameter 'output_file' specifies the file path. It defaults
|
||
|
|
to the file ".memorylist" in the current directory.
|
||
|
|
|
||
|
|
The optional parameter 'byte_count' limits the number of bytes in the dump.
|
||
|
|
Note that this parameter is ignored when lxml is compiled against a libxml2
|
||
|
|
version before 2.7.0.
|
||
|
|
"""
|
||
|
|
cdef Py_ssize_t c_count
|
||
|
|
if output_file is None:
|
||
|
|
output_file = b'.memorylist'
|
||
|
|
elif isinstance(output_file, unicode):
|
||
|
|
output_file.encode(sys.getfilesystemencoding())
|
||
|
|
|
||
|
|
f = stdio.fopen(output_file, "w")
|
||
|
|
if f is NULL:
|
||
|
|
raise IOError(f"Failed to create file {output_file.decode(sys.getfilesystemencoding())}")
|
||
|
|
try:
|
||
|
|
if byte_count is None:
|
||
|
|
tree.xmlMemDisplay(f)
|
||
|
|
else:
|
||
|
|
c_count = byte_count
|
||
|
|
tree.xmlMemDisplayLast(f, c_count)
|
||
|
|
finally:
|
||
|
|
stdio.fclose(f)
|
||
|
|
|
||
|
|
def show(self, output_file=None, block_count=None):
|
||
|
|
"""show(self, output_file=None, block_count=None)
|
||
|
|
|
||
|
|
Dumps the current memory blocks allocated by libxml2 to a file.
|
||
|
|
The output file format is suitable for line diffing.
|
||
|
|
|
||
|
|
The optional parameter 'output_file' specifies the file path. It defaults
|
||
|
|
to the file ".memorydump" in the current directory.
|
||
|
|
|
||
|
|
The optional parameter 'block_count' limits the number of blocks
|
||
|
|
in the dump.
|
||
|
|
"""
|
||
|
|
if output_file is None:
|
||
|
|
output_file = b'.memorydump'
|
||
|
|
elif isinstance(output_file, unicode):
|
||
|
|
output_file.encode(sys.getfilesystemencoding())
|
||
|
|
|
||
|
|
f = stdio.fopen(output_file, "w")
|
||
|
|
if f is NULL:
|
||
|
|
raise IOError(f"Failed to create file {output_file.decode(sys.getfilesystemencoding())}")
|
||
|
|
try:
|
||
|
|
tree.xmlMemShow(f, block_count if block_count is not None else tree.xmlMemBlocks())
|
||
|
|
finally:
|
||
|
|
stdio.fclose(f)
|
||
|
|
|
||
|
|
memory_debugger = _MemDebug()
|