Skip to content

[3.13] gh-116946: fully implement GC protocol for lzma objects (GH-138288)#138323

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
picnixz merged 1 commit into from
Sep 1, 2025
Merged

[3.13] gh-116946: fully implement GC protocol for lzma objects (GH-138288) #138323

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
27 changes: 17 additions & 10 deletions Modules/_lzmamodule.c
View file
Open in desktop
Original file line numberDiff line numberDiff line change
Expand Up@@ -126,6 +126,9 @@ typedef struct{
PyThread_type_lock lock;
} Decompressor;

#define Compressor_CAST(op) ((Compressor *)(op))
#define Decompressor_CAST(op) ((Decompressor *)(op))

/* Helper functions. */

static int
Expand DownExpand Up@@ -857,14 +860,16 @@ Compressor_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
}

static void
Compressor_dealloc(Compressor *self)
Compressor_dealloc(PyObject *op)
{
PyTypeObject *tp = Py_TYPE(op);
PyObject_GC_UnTrack(op);
Compressor *self = Compressor_CAST(op);
lzma_end(&self->lzs);
if (self->lock != NULL){
PyThread_free_lock(self->lock);
}
PyTypeObject *tp = Py_TYPE(self);
tp->tp_free((PyObject *)self);
tp->tp_free(self);
Py_DECREF(tp);
}

Expand All@@ -875,7 +880,7 @@ static PyMethodDef Compressor_methods[] ={
};

static int
Compressor_traverse(Compressor *self, visitproc visit, void *arg)
Compressor_traverse(PyObject *self, visitproc visit, void *arg)
{
Py_VISIT(Py_TYPE(self));
return 0;
Expand DownExpand Up@@ -925,7 +930,7 @@ static PyType_Spec lzma_compressor_type_spec ={
// lzma_compressor_type_spec does not have Py_TPFLAGS_BASETYPE flag
// which prevents to create a subclass.
// So calling PyType_GetModuleState() in this file is always safe.
.flags = (Py_TPFLAGS_DEFAULT | Py_TPFLAGS_IMMUTABLETYPE),
.flags = (Py_TPFLAGS_DEFAULT | Py_TPFLAGS_IMMUTABLETYPE | Py_TPFLAGS_HAVE_GC),
.slots = lzma_compressor_type_slots,
};

Expand DownExpand Up@@ -1304,8 +1309,11 @@ _lzma_LZMADecompressor_impl(PyTypeObject *type, int format,
}

static void
Decompressor_dealloc(Decompressor *self)
Decompressor_dealloc(PyObject *op)
{
PyTypeObject *tp = Py_TYPE(op);
PyObject_GC_UnTrack(op);
Decompressor *self = Decompressor_CAST(op);
if(self->input_buffer != NULL)
PyMem_Free(self->input_buffer);

Expand All@@ -1314,13 +1322,12 @@ Decompressor_dealloc(Decompressor *self)
if (self->lock != NULL){
PyThread_free_lock(self->lock);
}
PyTypeObject *tp = Py_TYPE(self);
tp->tp_free((PyObject *)self);
tp->tp_free(self);
Py_DECREF(tp);
}

static int
Decompressor_traverse(Decompressor *self, visitproc visit, void *arg)
Decompressor_traverse(PyObject *self, visitproc visit, void *arg)
{
Py_VISIT(Py_TYPE(self));
return 0;
Expand DownExpand Up@@ -1372,7 +1379,7 @@ static PyType_Spec lzma_decompressor_type_spec ={
// lzma_decompressor_type_spec does not have Py_TPFLAGS_BASETYPE flag
// which prevents to create a subclass.
// So calling PyType_GetModuleState() in this file is always safe.
.flags = (Py_TPFLAGS_DEFAULT | Py_TPFLAGS_IMMUTABLETYPE),
.flags = (Py_TPFLAGS_DEFAULT | Py_TPFLAGS_IMMUTABLETYPE | Py_TPFLAGS_HAVE_GC),
.slots = lzma_decompressor_type_slots,
};

Expand Down
Loading