static void zend_generator_dtor_storage(zend_object *object) /* {{{ */
{
zend_generator *generator = (zend_generator*) object;
zend_execute_data *ex = generator->execute_data;
uint32_t op_num, finally_op_num, finally_op_end;
int i;
if (!ex || !(ex->func->op_array.fn_flags & ZEND_ACC_HAS_FINALLY_BLOCK)) {
return;
}
/* -1 required because we want the last run opcode, not the
* next to-be-run one. */
op_num = ex->opline - ex->func->op_array.opcodes - 1;
/* Find next finally block */
finally_op_num = 0;
finally_op_end = 0;
for (i = 0; i < ex->func->op_array.last_try_catch; i++) {
zend_try_catch_element *try_catch = &ex->func->op_array.try_catch_array[i];
if (op_num < try_catch->try_op) {
break;
}
if (op_num < try_catch->finally_op) {
finally_op_num = try_catch->finally_op;
finally_op_end = try_catch->finally_end;
}
}
/* If a finally block was found we jump directly to it and
* resume the generator. */
if (finally_op_num) {
zval *fast_call = ZEND_CALL_VAR(ex, ex->func->op_array.opcodes[finally_op_end].op1.var);
Z_OBJ_P(fast_call) = NULL;
fast_call->u2.lineno = (uint32_t)-1;
ex->opline = &ex->func->op_array.opcodes[finally_op_num];
generator->flags |= ZEND_GENERATOR_FORCED_CLOSE;
zend_generator_resume(generator);
}
}
static void zend_generator_dtor_storage(zend_generator *generator, zend_object_handle handle TSRMLS_DC) /* {{{ */
{
zend_execute_data *ex = generator->execute_data;
zend_uint op_num, finally_op_num;
int i;
if (!ex || !ex->op_array->has_finally_block) {
return;
}
/* -1 required because we want the last run opcode, not the
* next to-be-run one. */
op_num = ex->opline - ex->op_array->opcodes - 1;
/* Find next finally block */
finally_op_num = 0;
for (i = 0; i < ex->op_array->last_try_catch; i++) {
zend_try_catch_element *try_catch = &ex->op_array->try_catch_array[i];
if (op_num < try_catch->try_op) {
break;
}
if (op_num < try_catch->finally_op) {
finally_op_num = try_catch->finally_op;
}
}
/* If a finally block was found we jump directly to it and
* resume the generator. */
if (finally_op_num) {
ex->opline = &ex->op_array->opcodes[finally_op_num];
ex->fast_ret = NULL;
generator->flags |= ZEND_GENERATOR_FORCED_CLOSE;
zend_generator_resume(generator TSRMLS_CC);
}
}
void zend_generator_close(zend_generator *generator, zend_bool finished_execution TSRMLS_DC) /* {{{ */
{
if (generator->execute_data) {
zend_execute_data *execute_data = generator->execute_data;
zend_op_array *op_array = execute_data->op_array;
if (!finished_execution) {
if (op_array->has_finally_block) {
/* -1 required because we want the last run opcode, not the
* next to-be-run one. */
zend_uint op_num = execute_data->opline - op_array->opcodes - 1;
zend_uint finally_op_num = 0;
/* Find next finally block */
int i;
for (i = 0; i < op_array->last_try_catch; i++) {
zend_try_catch_element *try_catch = &op_array->try_catch_array[i];
if (op_num < try_catch->try_op) {
break;
}
if (op_num < try_catch->finally_op) {
finally_op_num = try_catch->finally_op;
}
}
/* If a finally block was found we jump directly to it and
* resume the generator. Furthermore we abort this close call
* because the generator will already be closed somewhere in
* the resume. */
if (finally_op_num) {
execute_data->opline = &op_array->opcodes[finally_op_num];
execute_data->leaving = ZEND_RETURN;
generator->flags |= ZEND_GENERATOR_FORCED_CLOSE;
zend_generator_resume(generator TSRMLS_CC);
return;
}
}
}
if (!execute_data->symbol_table) {
zend_free_compiled_variables(execute_data->CVs, op_array->last_var);
} else {
zend_clean_and_cache_symbol_table(execute_data->symbol_table TSRMLS_CC);
}
if (execute_data->current_this) {
zval_ptr_dtor(&execute_data->current_this);
}
if (execute_data->object) {
zval_ptr_dtor(&execute_data->object);
}
/* If the generator is closed before it can finish execution (reach
* a return statement) we have to free loop variables manually, as
* we don't know whether the SWITCH_FREE / FREE opcodes have run */
if (!finished_execution) {
/* -1 required because we want the last run opcode, not the
* next to-be-run one. */
zend_uint op_num = execute_data->opline - op_array->opcodes - 1;
int i;
for (i = 0; i < op_array->last_brk_cont; ++i) {
zend_brk_cont_element *brk_cont = op_array->brk_cont_array + i;
if (brk_cont->start < 0) {
continue;
} else if (brk_cont->start > op_num) {
break;
} else if (brk_cont->brk > op_num) {
zend_op *brk_opline = op_array->opcodes + brk_cont->brk;
switch (brk_opline->opcode) {
case ZEND_SWITCH_FREE:
{
temp_variable *var = (temp_variable *) ((char *) execute_data->Ts + brk_opline->op1.var);
zval_ptr_dtor(&var->var.ptr);
}
break;
case ZEND_FREE:
{
temp_variable *var = (temp_variable *) ((char *) execute_data->Ts + brk_opline->op1.var);
zval_dtor(&var->tmp_var);
}
break;
}
}
}
}
/* Clear any backed up stack arguments */
if (generator->backed_up_stack) {
zval **zvals = (zval **) generator->backed_up_stack;
size_t zval_num = generator->backed_up_stack_size / sizeof(zval *);
int i;
for (i = 0; i < zval_num; i++) {
zval_ptr_dtor(&zvals[i]);
}
efree(generator->backed_up_stack);
}
if (generator->backed_up_arg_types_stack) {
/* The arg types stack contains three elements per call: fbc, object
* and called_scope. Here we traverse the stack from top to bottom
* and dtor the object. */
int i = generator->backed_up_arg_types_stack_count / 3;
while (i--) {
zval *object = (zval *) generator->backed_up_arg_types_stack[3*i + 1];
if (object) {
zval_ptr_dtor(&object);
}
}
efree(generator->backed_up_arg_types_stack);
}
/* We have added an additional stack frame in prev_execute_data, so we
* have to free it. It also contains the arguments passed to the
* generator (for func_get_args) so those have to be freed too. */
{
zend_execute_data *prev_execute_data = execute_data->prev_execute_data;
void **arguments = prev_execute_data->function_state.arguments;
if (arguments) {
int arguments_count = (int) (zend_uintptr_t) *arguments;
zval **arguments_start = (zval **) (arguments - arguments_count);
int i;
for (i = 0; i < arguments_count; ++i) {
zval_ptr_dtor(arguments_start + i);
}
efree(arguments_start);
}
efree(prev_execute_data);
}
/* Free a clone of closure */
if (op_array->fn_flags & ZEND_ACC_CLOSURE) {
destroy_op_array(op_array TSRMLS_CC);
efree(op_array);
}
efree(execute_data);
generator->execute_data = NULL;
}
if (generator->value) {
zval_ptr_dtor(&generator->value);
generator->value = NULL;
}
if (generator->key) {
zval_ptr_dtor(&generator->key);
generator->key = NULL;
}
}
ZEND_API void zend_generator_close(zend_generator *generator, zend_bool finished_execution TSRMLS_DC) /* {{{ */
{
if (generator->execute_data) {
zend_execute_data *execute_data = generator->execute_data;
zend_op_array *op_array = execute_data->op_array;
if (!finished_execution) {
if (op_array->has_finally_block) {
/* -1 required because we want the last run opcode, not the
* next to-be-run one. */
zend_uint op_num = execute_data->opline - op_array->opcodes - 1;
zend_uint finally_op_num = 0;
/* Find next finally block */
int i;
for (i = 0; i < op_array->last_try_catch; i++) {
zend_try_catch_element *try_catch = &op_array->try_catch_array[i];
if (op_num < try_catch->try_op) {
break;
}
if (op_num < try_catch->finally_op) {
finally_op_num = try_catch->finally_op;
}
}
/* If a finally block was found we jump directly to it and
* resume the generator. Furthermore we abort this close call
* because the generator will already be closed somewhere in
* the resume. */
if (finally_op_num) {
execute_data->opline = &op_array->opcodes[finally_op_num];
execute_data->fast_ret = NULL;
generator->flags |= ZEND_GENERATOR_FORCED_CLOSE;
zend_generator_resume(generator TSRMLS_CC);
return;
}
}
}
if (!execute_data->symbol_table) {
zend_free_compiled_variables(execute_data);
} else {
zend_clean_and_cache_symbol_table(execute_data->symbol_table TSRMLS_CC);
}
if (execute_data->current_this) {
zval_ptr_dtor(&execute_data->current_this);
}
/* If the generator is closed before it can finish execution (reach
* a return statement) we have to free loop variables manually, as
* we don't know whether the SWITCH_FREE / FREE opcodes have run */
if (!finished_execution) {
/* -1 required because we want the last run opcode, not the
* next to-be-run one. */
zend_uint op_num = execute_data->opline - op_array->opcodes - 1;
int i;
for (i = 0; i < op_array->last_brk_cont; ++i) {
zend_brk_cont_element *brk_cont = op_array->brk_cont_array + i;
if (brk_cont->start < 0) {
continue;
} else if (brk_cont->start > op_num) {
break;
} else if (brk_cont->brk > op_num) {
zend_op *brk_opline = op_array->opcodes + brk_cont->brk;
switch (brk_opline->opcode) {
case ZEND_SWITCH_FREE:
{
temp_variable *var = EX_TMP_VAR(execute_data, brk_opline->op1.var);
zval_ptr_dtor(&var->var.ptr);
}
break;
case ZEND_FREE:
{
temp_variable *var = EX_TMP_VAR(execute_data, brk_opline->op1.var);
zval_dtor(&var->tmp_var);
}
break;
}
}
}
}
/* Clear any backed up stack arguments */
if (generator->stack != EG(argument_stack)) {
void **stack_frame = zend_vm_stack_frame_base(execute_data);
while (generator->stack->top != stack_frame) {
zval_ptr_dtor((zval**)stack_frame);
stack_frame++;
}
}
while (execute_data->call >= execute_data->call_slots) {
if (execute_data->call->object) {
zval_ptr_dtor(&execute_data->call->object);
}
execute_data->call--;
}
/* We have added an additional stack frame in prev_execute_data, so we
* have to free it. It also contains the arguments passed to the
* generator (for func_get_args) so those have to be freed too. */
{
zend_execute_data *prev_execute_data = execute_data->prev_execute_data;
void **arguments = prev_execute_data->function_state.arguments;
if (arguments) {
int arguments_count = (int) (zend_uintptr_t) *arguments;
zval **arguments_start = (zval **) (arguments - arguments_count);
int i;
for (i = 0; i < arguments_count; ++i) {
zval_ptr_dtor(arguments_start + i);
}
}
}
/* Free a clone of closure */
if (op_array->fn_flags & ZEND_ACC_CLOSURE) {
destroy_op_array(op_array TSRMLS_CC);
efree(op_array);
}
efree(generator->stack);
if (generator->stack == EG(argument_stack)) {
/* abnormal exit for running generator */
EG(argument_stack) = NULL;
}
generator->execute_data = NULL;
}
if (generator->value) {
zval_ptr_dtor(&generator->value);
generator->value = NULL;
}
if (generator->key) {
zval_ptr_dtor(&generator->key);
generator->key = NULL;
}
}
