diff options
Diffstat (limited to '.venv/lib/python3.12/site-packages/lxml/debug.pxi')
-rw-r--r-- | .venv/lib/python3.12/site-packages/lxml/debug.pxi | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/.venv/lib/python3.12/site-packages/lxml/debug.pxi b/.venv/lib/python3.12/site-packages/lxml/debug.pxi new file mode 100644 index 00000000..e5bb0619 --- /dev/null +++ b/.venv/lib/python3.12/site-packages/lxml/debug.pxi @@ -0,0 +1,90 @@ +@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() |