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Also dont waste memory when no output is expected
This commit is contained in:
Kovid Goyal
2021-09-18 13:34:20 +05:30
parent 77508bfe0d
commit bcd1837924
3 changed files with 33 additions and 8 deletions
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11
kittens/transfer/rsync.c
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@@ -54,12 +54,15 @@ static PyObject*
iter_job(PyObject *self UNUSED, PyObject *args) {
Py_ssize_t input_data_size;
char *input_data;
int eof = -1;
int eof = -1, expecting_output = 1;
PyObject *job_capsule;
if (!PyArg_ParseTuple(args, "O!y#|p", &PyCapsule_Type, &job_capsule, &input_data, &input_data_size, &eof)) return NULL;
if (!PyArg_ParseTuple(args, "O!y#|pp", &PyCapsule_Type, &job_capsule, &input_data, &input_data_size, &eof, expecting_output)) return NULL;
GET_JOB_FROM_CAPSULE;
if (eof == -1) eof = input_data_size > 0 ? 0 : 1;
rs_buffers_t buffer = {.avail_in=input_data_size, .next_in = input_data, .eof_in=eof, .avail_out=MAX(IO_BUFFER_SIZE, 2 * (size_t)input_data_size)};
rs_buffers_t buffer = {
.avail_in=input_data_size, .next_in = input_data, .eof_in=eof,
.avail_out=expecting_output ? (MAX(IO_BUFFER_SIZE, 2 * (size_t)input_data_size)) : 64
};
PyObject *ans = PyBytes_FromStringAndSize(NULL, buffer.avail_out);
if (!ans) return NULL;
buffer.next_out = PyBytes_AS_STRING(ans);
@@ -71,7 +74,7 @@ iter_job(PyObject *self UNUSED, PyObject *args) {
output_size += before - buffer.avail_out;
if (result == RS_DONE || result == RS_BLOCKED) break;
if (buffer.avail_in) {
if (_PyBytes_Resize(&ans, PyBytes_GET_SIZE(ans) * 2) != 0) return NULL;
if (_PyBytes_Resize(&ans, MAX(IO_BUFFER_SIZE, (size_t)PyBytes_GET_SIZE(ans) * 2)) != 0) return NULL;
buffer.avail_out = PyBytes_GET_SIZE(ans) - output_size;
buffer.next_out = PyBytes_AS_STRING(ans) + output_size;
continue;