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/* This file is part of GCC.
GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 3, or (at your option) any later
version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdarg.h>
#include <stdbool.h>
#include <gmp.h>
#include <mpfr.h>
#include <gpython/gpython.h>
#include <gpython/objects.h>
#include <gpython/vectors.h>
#include <gpython/garbage.h>
gpy_vector_t * gpy_garbage_vec;
void gpy_garbage_invoke (void)
{
if( gpy_garbage_vec )
{
debug("garbage collector running...\n");
gpy_object_t * p_obj = NULL_OBJECT;
while ((p_obj = (gpy_object_t *)
gpy_vec_pop( gpy_garbage_vec )))
{
gpy_garbage_free_obj( p_obj );
}
gpy_vec_free( gpy_garbage_vec );
gpy_garbage_vec = NULL;
}
}
void gpy_garbage_mark_obj__ (gpy_object_t * const sym)
{
if( sym )
{
if( gpy_garbage_vec )
{
gpy_vec_push( gpy_garbage_vec, sym );
}
else
{
gpy_garbage_vec = (gpy_vector_t *)
gpy_malloc( sizeof(gpy_vector_t) );
gpy_vec_init( gpy_garbage_vec );
gpy_vec_push( gpy_garbage_vec, sym );
}
}
}
void gpy_garbage_invoke_sweep (gpy_vector_t * const context)
{
signed long ctx_l = context->length;
if( context )
{
debug("sweeping context table for garbage length <%i>...\n", ctx_l);
gpy_hash_tab_t * ctx_idx = NULL;
signed long idx = (ctx_l - 1);
while (idx >= 0)
{
ctx_idx = context->vector[ idx ];
gpy_hash_entry_t * s_arr = ctx_idx->array;
int i = 0; int len = (ctx_idx->length);
debug("table length <%i>!\n", len );
for( ; i<len; ++i )
{
gpy_hash_entry_t oe = s_arr[i];
if (oe.data)
{
gpy_object_t * o = oe.data;
gpy_assert (o->T == TYPE_OBJECT_STATE);
debug ("object <%p> has ref count <%i>!\n",
(void *) o, o->o.object_state->ref_count);
// If no references remain
if (o->o.object_state->ref_count <= 0)
{
gpy_garbage_mark_obj( o );
s_arr[i] = (gpy_hash_entry_t) { 0, NULL };
}
}
}
idx--;
}
}
gpy_garbage_invoke ();
}
void gpy_garbage_free_obj (gpy_object_t * x)
{
gpy_assert(x);
debug("deleting garbage object <%p>!\n", (void*)x );
switch (x->T)
{
case TYPE_OBJECT_LIT:
break;
case TYPE_OBJECT_STATE:
break;
case TYPE_NULL:
break;
}
gpy_free (x);
}
/* Cleanup the program for exit! */
void gpy_cleanup (void)
{
debug("cleanup.......\n");
gpy_garbage_invoke_sweep (gpy_namespace_vec);
gpy_vec_free (gpy_primitives);
gpy_vec_free (gpy_namespace_vec);
mpfr_free_cache ();
}
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