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the statistical parser is now using two memory pools: one for parsing and one for the output trees. This means that the memory for parsing can be released as soon as the needed abstract trees are retrieved, while the trees themselves are retained in the separate output pool

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This commit is contained in:
kr.angelov
2013-05-06 15:28:04 +00:00
parent 3e22349d2b
commit 561e478ed4
8 changed files with 60 additions and 35 deletions
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44
src/runtime/python/pypgf.c
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@@ -435,6 +435,7 @@ Expr_getattro(ExprObject *self, PyObject *attr_name) {
typedef struct IterObject {
PyObject_HEAD
PGFObject* grammar;
PyObject* container;
GuPool* pool;
int max_count;
int counter;
@@ -454,8 +455,8 @@ Iter_fetch_expr(IterObject* self)
return NULL;
pyexpr->pool = NULL;
pyexpr->expr = ep->expr;
pyexpr->master = (PyObject*) self;
Py_INCREF(self);
pyexpr->master = self->container;
Py_INCREF(self->container);
PyObject* res = Py_BuildValue("(f,O)", ep->prob, pyexpr);
Py_DECREF(pyexpr);
@@ -483,6 +484,7 @@ Iter_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
IterObject* self = (IterObject *)type->tp_alloc(type, 0);
if (self != NULL) {
self->grammar = NULL;
self->container = NULL;
self->pool = NULL;
self->max_count = -1;
self->counter = 0;
@@ -499,6 +501,8 @@ Iter_dealloc(IterObject* self)
gu_pool_free(self->pool);
Py_XDECREF(self->grammar);
Py_XDECREF(self->container);
self->ob_type->tp_free((PyObject*)self);
}
@@ -661,6 +665,14 @@ pypgf_new_python_lexer(PyObject* pylexer, GuPool* pool)
return ((PgfLexer*) lexer);
}
#define PGF_CONTAINER_NAME "pgf.Container"
void pypgf_container_descructor(PyObject *capsule)
{
GuPool* pool = PyCapsule_GetPointer(capsule, PGF_CONTAINER_NAME);
gu_pool_free(pool);
}
static IterObject*
Concr_parse(ConcrObject* self, PyObject *args, PyObject *keywds)
{
@@ -698,28 +710,35 @@ Concr_parse(ConcrObject* self, PyObject *args, PyObject *keywds)
pyres->grammar = self->grammar;
Py_XINCREF(pyres->grammar);
pyres->pool = gu_new_pool();
GuPool* out_pool = gu_new_pool();
PyObject* py_pool =
PyCapsule_New(out_pool, PGF_CONTAINER_NAME,
pypgf_container_descructor);
pyres->container = PyTuple_Pack(2, pyres->grammar, py_pool);
Py_DECREF(py_pool);
pyres->pool = gu_new_pool();
pyres->max_count = max_count;
pyres->counter = 0;
pyres->fetch = Iter_fetch_expr;
GuPool *tmp_pool = gu_local_pool();
GuString catname =
(catname_s == NULL) ? pgf_start_cat(self->grammar->pgf, tmp_pool)
: gu_str_string(catname_s, tmp_pool);
(catname_s == NULL) ? pgf_start_cat(self->grammar->pgf, pyres->pool)
: gu_str_string(catname_s, pyres->pool);
PgfLexer *lexer = NULL;
if (buf != NULL) {
GuIn* in = gu_data_in(buf, len, tmp_pool);
GuReader* rdr = gu_new_utf8_reader(in, tmp_pool);
lexer = pgf_new_simple_lexer(rdr, tmp_pool);
GuIn* in = gu_data_in(buf, len, pyres->pool);
GuReader* rdr = gu_new_utf8_reader(in, pyres->pool);
lexer = pgf_new_simple_lexer(rdr, pyres->pool);
}
if (py_lexer != NULL) {
lexer = pypgf_new_python_lexer(py_lexer, tmp_pool);
lexer = pypgf_new_python_lexer(py_lexer, pyres->pool);
}
pyres->res =
pgf_parse(self->concr, catname, lexer, pyres->pool);
pgf_parse(self->concr, catname, lexer, pyres->pool, out_pool);
if (pyres->res == NULL) {
Py_DECREF(pyres);
@@ -740,7 +759,6 @@ Concr_parse(ConcrObject* self, PyObject *args, PyObject *keywds)
}
Py_XDECREF(py_lexer);
gu_pool_free(tmp_pool);
return pyres;
}
@@ -784,6 +802,8 @@ Concr_getCompletions(ConcrObject* self, PyObject *args, PyObject *keywds)
pyres->grammar = self->grammar;
Py_XINCREF(pyres->grammar);
pyres->container = NULL;
pyres->pool = gu_new_pool();
pyres->max_count = max_count;