27739884676

Committed 18 Jun 2026 05:57AM UTC coverage: 52.155% (+0.04%) from 52.111%

Build # 27739884676

Build Type

Pull #79

github

Committed by

web-flow

Commit Message

Merge 93a88987f into 53ad1e86c

Pull Request Pull Request #79: Add Valgrind memory checking (C++, Python, MPI) and fix the bugs it found

Coverage Stats

37169 of 92677 branches covered (40.11%)

Branch coverage included in aggregate %.

129 of 144 new or added lines in 11 files covered. (89.58%)

7 existing lines in 3 files now uncovered.

33450 of 42726 relevant lines covered (78.29%)

20413.17 hits per line

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62.64

/src/dftracer/utils/python/memoryview_batch.cpp

#define PY_SSIZE_T_CLEAN
#include <dftracer/utils/python/memoryview_batch.h>

#include <cstring>

namespace dftracer::utils::python {

static void MemoryViewBatch_dealloc(MemoryViewBatchObject *self) {
    delete self->data;
    Py_TYPE(self)->tp_free((PyObject *)self);
}

static int MemoryViewBatch_getbuffer(MemoryViewBatchObject *self,
                                     Py_buffer *view, int flags) {
    if (!self->data || self->data->buffer.empty()) {
        PyErr_SetString(PyExc_BufferError, "MemoryViewBatch has no data");
        return -1;
    }
    return PyBuffer_FillInfo(view, (PyObject *)self, self->data->buffer.data(),
                             static_cast<Py_ssize_t>(self->data->buffer.size()),
                             1, flags);
}

static Py_ssize_t MemoryViewBatch_length(MemoryViewBatchObject *self) {
    if (!self->data) return 0;
    return static_cast<Py_ssize_t>(self->data->num_entries());
}

PyObject *MemoryViewBatch_item(MemoryViewBatchObject *self, Py_ssize_t i) {
    if (!self->data) {
        PyErr_SetString(PyExc_IndexError, "MemoryViewBatch has no data");
        return NULL;
    }
    Py_ssize_t n = static_cast<Py_ssize_t>(self->data->num_entries());
    if (i < 0 || i >= n) {
        PyErr_SetString(PyExc_IndexError, "MemoryViewBatch index out of range");
        return NULL;
    }

    PyObject *full = PyMemoryView_FromObject((PyObject *)self);
    if (!full) return NULL;

    Py_ssize_t start = static_cast<Py_ssize_t>(self->data->offsets[i]);
    Py_ssize_t stop = start + static_cast<Py_ssize_t>(self->data->lengths[i]);
    PyObject *lo = PyLong_FromSsize_t(start);
    PyObject *hi = PyLong_FromSsize_t(stop);
    PyObject *slice = (lo && hi) ? PySlice_New(lo, hi, NULL) : NULL;
    Py_XDECREF(lo);
    Py_XDECREF(hi);
    if (!slice) {
        Py_DECREF(full);
        return NULL;
    }
    PyObject *entry = PyObject_GetItem(full, slice);  // sub-view, shares buffer
    Py_DECREF(slice);
    Py_DECREF(full);
    return entry;
}

static PyBufferProcs MemoryViewBatch_as_buffer = {
    (getbufferproc)MemoryViewBatch_getbuffer,
    NULL,
};

static PySequenceMethods MemoryViewBatch_as_sequence = {
    (lenfunc)MemoryViewBatch_length,
    NULL,
    NULL,
    (ssizeargfunc)MemoryViewBatch_item,
};

static PyObject *MemoryViewBatch_get_num_entries(MemoryViewBatchObject *self,
                                                 void *) {
    if (!self->data) return PyLong_FromLong(0);
    return PyLong_FromSsize_t(
        static_cast<Py_ssize_t>(self->data->num_entries()));
}

static PyObject *MemoryViewBatch_get_num_bytes(MemoryViewBatchObject *self,
                                               void *) {
    if (!self->data) return PyLong_FromLong(0);
    return PyLong_FromSsize_t(
        static_cast<Py_ssize_t>(self->data->buffer.size()));
}

static PyGetSetDef MemoryViewBatch_getsetters[] = {
    {"num_entries", (getter)MemoryViewBatch_get_num_entries, NULL,
     "Number of entries", NULL},
    {"num_bytes", (getter)MemoryViewBatch_get_num_bytes, NULL,
     "Total buffer size in bytes", NULL},
    {NULL}};

PyTypeObject MemoryViewBatchType = {
    .ob_base = PyVarObject_HEAD_INIT(NULL, 0).tp_name =
        "dftracer_utils_ext._MemoryViewBatch",
    .tp_basicsize = sizeof(MemoryViewBatchObject),
    .tp_itemsize = 0,
    .tp_dealloc = (destructor)MemoryViewBatch_dealloc,
    .tp_as_sequence = &MemoryViewBatch_as_sequence,
    .tp_as_buffer = &MemoryViewBatch_as_buffer,
    .tp_flags = Py_TPFLAGS_DEFAULT,
    .tp_doc = "Zero-copy batch of byte entries backed by a contiguous buffer",
    .tp_getset = MemoryViewBatch_getsetters,
};

int init_memoryview_batch(PyObject *m) {
    if (PyType_Ready(&MemoryViewBatchType) < 0) return -1;
    Py_INCREF(&MemoryViewBatchType);
    if (PyModule_AddObject(m, "_MemoryViewBatch",
                           (PyObject *)&MemoryViewBatchType) < 0) {
        Py_DECREF(&MemoryViewBatchType);
        return -1;
    }
    return 0;
}

}  // namespace dftracer::utils::python

1	#define PY_SSIZE_T_CLEAN
2	#include <dftracer/utils/python/memoryview_batch.h>
3
4	#include <cstring>
5
6	namespace dftracer::utils::python {
7
8	static void MemoryViewBatch_dealloc(MemoryViewBatchObject *self) {	504✔
9	delete self->data;	504✔
10	Py_TYPE(self)->tp_free((PyObject *)self);	504✔
11	}	504✔
12
13	static int MemoryViewBatch_getbuffer(MemoryViewBatchObject *self,	2,302✔
14	Py_buffer *view, int flags) {
15	if (!self->data \|\| self->data->buffer.empty()) {	2,302!
16	PyErr_SetString(PyExc_BufferError, "MemoryViewBatch has no data");	×
17	return -1;	×
18	}
19	return PyBuffer_FillInfo(view, (PyObject *)self, self->data->buffer.data(),	3,453✔
20	static_cast<Py_ssize_t>(self->data->buffer.size()),	2,302✔
21	1, flags);	2,302✔
22	}	1,151✔
23
24	static Py_ssize_t MemoryViewBatch_length(MemoryViewBatchObject *self) {	×
25	if (!self->data) return 0;	×
26	return static_cast<Py_ssize_t>(self->data->num_entries());	×
27	}
28
29	PyObject MemoryViewBatch_item(MemoryViewBatchObject self, Py_ssize_t i) {	2,302✔
30	if (!self->data) {	2,302✔
31	PyErr_SetString(PyExc_IndexError, "MemoryViewBatch has no data");	×
32	return NULL;	×
33	}
34	Py_ssize_t n = static_cast<Py_ssize_t>(self->data->num_entries());	2,302✔
35	if (i < 0 \|\| i >= n) {	2,302!
36	PyErr_SetString(PyExc_IndexError, "MemoryViewBatch index out of range");	×
37	return NULL;	×
38	}
39
40	PyObject full = PyMemoryView_FromObject((PyObject )self);	2,302✔
41	if (!full) return NULL;	2,302✔
42
43	Py_ssize_t start = static_cast<Py_ssize_t>(self->data->offsets[i]);	2,302✔
44	Py_ssize_t stop = start + static_cast<Py_ssize_t>(self->data->lengths[i]);	2,302✔
45	PyObject *lo = PyLong_FromSsize_t(start);	2,302✔
46	PyObject *hi = PyLong_FromSsize_t(stop);	2,302✔
47	PyObject *slice = (lo && hi) ? PySlice_New(lo, hi, NULL) : NULL;	2,302!
48	Py_XDECREF(lo);	2,302✔
49	Py_XDECREF(hi);	2,302✔
50	if (!slice) {	2,302✔
51	Py_DECREF(full);
NEW 52	return NULL;	×
53	}
54	PyObject *entry = PyObject_GetItem(full, slice); // sub-view, shares buffer	2,302✔
55	Py_DECREF(slice);	1,151✔
56	Py_DECREF(full);	1,151✔
57	return entry;	2,302✔
58	}	1,151✔
59
60	static PyBufferProcs MemoryViewBatch_as_buffer = {
61	(getbufferproc)MemoryViewBatch_getbuffer,
62	NULL,
63	};
64
65	static PySequenceMethods MemoryViewBatch_as_sequence = {
66	(lenfunc)MemoryViewBatch_length,
67	NULL,
68	NULL,
69	(ssizeargfunc)MemoryViewBatch_item,
70	};
71
72	static PyObject MemoryViewBatch_get_num_entries(MemoryViewBatchObject self,	×
73	void *) {
74	if (!self->data) return PyLong_FromLong(0);	×
75	return PyLong_FromSsize_t(	×
76	static_cast<Py_ssize_t>(self->data->num_entries()));	×
77	}
78
79	static PyObject MemoryViewBatch_get_num_bytes(MemoryViewBatchObject self,	×
80	void *) {
81	if (!self->data) return PyLong_FromLong(0);	×
82	return PyLong_FromSsize_t(	×
83	static_cast<Py_ssize_t>(self->data->buffer.size()));	×
84	}
85
86	static PyGetSetDef MemoryViewBatch_getsetters[] = {
87	{"num_entries", (getter)MemoryViewBatch_get_num_entries, NULL,
88	"Number of entries", NULL},
89	{"num_bytes", (getter)MemoryViewBatch_get_num_bytes, NULL,
90	"Total buffer size in bytes", NULL},
91	{NULL}};
92
93	PyTypeObject MemoryViewBatchType = {
94	.ob_base = PyVarObject_HEAD_INIT(NULL, 0).tp_name =
95	"dftracer_utils_ext._MemoryViewBatch",
96	.tp_basicsize = sizeof(MemoryViewBatchObject),
97	.tp_itemsize = 0,
98	.tp_dealloc = (destructor)MemoryViewBatch_dealloc,
99	.tp_as_sequence = &MemoryViewBatch_as_sequence,
100	.tp_as_buffer = &MemoryViewBatch_as_buffer,
101	.tp_flags = Py_TPFLAGS_DEFAULT,
102	.tp_doc = "Zero-copy batch of byte entries backed by a contiguous buffer",
103	.tp_getset = MemoryViewBatch_getsetters,
104	};
105
106	int init_memoryview_batch(PyObject *m) {	2✔
107	if (PyType_Ready(&MemoryViewBatchType) < 0) return -1;	2✔
108	Py_INCREF(&MemoryViewBatchType);	1✔
109	if (PyModule_AddObject(m, "_MemoryViewBatch",	3!
110	(PyObject *)&MemoryViewBatchType) < 0) {	2!
111	Py_DECREF(&MemoryViewBatchType);
112	return -1;	×
113	}
114	return 0;	2✔
115	}	1✔
116
117	} // namespace dftracer::utils::python

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