diff options
Diffstat (limited to 'vpp/vlib/vlib/init.c')
| -rw-r--r-- | vpp/vlib/vlib/init.c | 168 |
1 files changed, 168 insertions, 0 deletions
diff --git a/vpp/vlib/vlib/init.c b/vpp/vlib/vlib/init.c new file mode 100644 index 00000000..8d478451 --- /dev/null +++ b/vpp/vlib/vlib/init.c @@ -0,0 +1,168 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + * init.c: mechanism for functions to be called at init/exit. + * + * Copyright (c) 2008 Eliot Dresselhaus + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + +#include <vlib/vlib.h> + +clib_error_t * +vlib_call_init_exit_functions (vlib_main_t * vm, + _vlib_init_function_list_elt_t * head, + int call_once) +{ + clib_error_t *error = 0; + _vlib_init_function_list_elt_t *i; + + i = head; + while (i) + { + if (call_once && !hash_get (vm->init_functions_called, i->f)) + { + if (call_once) + hash_set1 (vm->init_functions_called, i->f); + error = i->f (vm); + if (error) + return error; + } + i = i->next_init_function; + } + return error; +} + +clib_error_t * +vlib_call_all_init_functions (vlib_main_t * vm) +{ + /* Call dummy functions to make sure purely static modules are + linked in. */ +#define _(f) vlib_##f##_reference (); + foreach_vlib_module_reference; +#undef _ + + return vlib_call_init_exit_functions + (vm, vm->init_function_registrations, 1 /* call_once */ ); +} + +clib_error_t * +vlib_call_all_main_loop_enter_functions (vlib_main_t * vm) +{ + return vlib_call_init_exit_functions + (vm, vm->main_loop_enter_function_registrations, 1 /* call_once */ ); +} + +clib_error_t * +vlib_call_all_main_loop_exit_functions (vlib_main_t * vm) +{ + return vlib_call_init_exit_functions + (vm, vm->main_loop_exit_function_registrations, 1 /* call_once */ ); +} + +clib_error_t * +vlib_call_all_config_functions (vlib_main_t * vm, + unformat_input_t * input, int is_early) +{ + clib_error_t *error = 0; + vlib_config_function_runtime_t *c, **all; + uword *hash = 0, *p; + uword i; + + hash = hash_create_string (0, sizeof (uword)); + all = 0; + + c = vm->config_function_registrations; + + while (c) + { + hash_set_mem (hash, c->name, vec_len (all)); + vec_add1 (all, c); + unformat_init (&c->input, 0, 0); + c = c->next_registration; + } + + while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) + { + u8 *s, *v; + + if (!unformat (input, "%s %v", &s, &v) || !(p = hash_get_mem (hash, s))) + { + error = clib_error_create ("unknown input `%s %v'", s, v); + goto done; + } + + c = all[p[0]]; + if (vec_len (c->input.buffer) > 0) + vec_add1 (c->input.buffer, ' '); + vec_add (c->input.buffer, v, vec_len (v)); + vec_free (v); + vec_free (s); + } + + for (i = 0; i < vec_len (all); i++) + { + c = all[i]; + + /* Is this an early config? Are we doing early configs? */ + if (is_early ^ c->is_early) + continue; + + /* Already called? */ + if (hash_get (vm->init_functions_called, c->function)) + continue; + hash_set1 (vm->init_functions_called, c->function); + + error = c->function (vm, &c->input); + if (error) + goto done; + } + +done: + for (i = 0; i < vec_len (all); i++) + { + c = all[i]; + unformat_free (&c->input); + } + vec_free (all); + hash_free (hash); + return error; +} + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ |