stack_manager.cc revision 79ecab5d0418fde77e9afcdd451bd713af73e180
18df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson/****************************************************************************** 28df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson * 38df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson * Copyright (C) 2014 Google, Inc. 48df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson * 58df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson * Licensed under the Apache License, Version 2.0 (the "License"); 68df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson * you may not use this file except in compliance with the License. 78df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson * You may obtain a copy of the License at: 88df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson * 98df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson * http://www.apache.org/licenses/LICENSE-2.0 108df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson * 118df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson * Unless required by applicable law or agreed to in writing, software 128df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson * distributed under the License is distributed on an "AS IS" BASIS, 138df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 148df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson * See the License for the specific language governing permissions and 158df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson * limitations under the License. 168df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson * 178df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson ******************************************************************************/ 188df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson 198df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson#define LOG_TAG "bt_stack_manager" 208df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson 218df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson#include <hardware/bluetooth.h> 228df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson#include <utils/Log.h> 238df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson 248df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson#include "btif_api.h" 251924dac3811575d594c11b76874b24ee0ad24e71Zach Johnson#include "btif_common.h" 2679ecab5d0418fde77e9afcdd451bd713af73e180Chris Manton#include "device/include/controller.h" 2772f308ee6d3983ae2c0d67be3de2451f2dd72dcbZach Johnson#include "module.h" 288df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson#include "osi.h" 298df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson#include "semaphore.h" 308df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson#include "stack_manager.h" 318df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson#include "thread.h" 328df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson 339b0fbce37260e69cb116be1cdcbceb1f43bf9346Zach Johnson// Temp includes 349b0fbce37260e69cb116be1cdcbceb1f43bf9346Zach Johnson#include "btif_config.h" 35eacc69d09256ecaa7c01ea066cd70b0049edc23bSharvil Nanavati#include "btif_profile_queue.h" 3696363ff2b78c10e2b2e106464f337b58ec1a616aZach Johnson#include "bt_utils.h" 379b0fbce37260e69cb116be1cdcbceb1f43bf9346Zach Johnson 388df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnsonstatic thread_t *management_thread; 398df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson 408df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson// If initialized, any of the bluetooth API functions can be called. 418df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson// (e.g. turning logging on and off, enabling/disabling the stack, etc) 428df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnsonstatic bool stack_is_initialized; 438df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson// If running, the stack is fully up and able to bluetooth. 448df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnsonstatic bool stack_is_running; 458df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson 468df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnsonstatic void event_init_stack(void *context); 478df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnsonstatic void event_start_up_stack(void *context); 488df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnsonstatic void event_shut_down_stack(void *context); 498df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnsonstatic void event_clean_up_stack(void *context); 508df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson 51efea7821780cdea2b30e944b08e418d1f2781878Zach Johnsonstatic void event_signal_stack_up(void *context); 52efea7821780cdea2b30e944b08e418d1f2781878Zach Johnsonstatic void event_signal_stack_down(void *context); 53efea7821780cdea2b30e944b08e418d1f2781878Zach Johnson 54f450ba53dfd7b36989c1ea6ed9c6508c7a1b895eZach Johnson// Unvetted includes/imports, etc which should be removed or vetted in the future 558ea8188a481504641fc6a72087704eb808d0bd87Zach Johnsonstatic future_t *hack_future; 56f450ba53dfd7b36989c1ea6ed9c6508c7a1b895eZach Johnsonvoid bte_main_enable(); 57efea7821780cdea2b30e944b08e418d1f2781878Zach Johnsonvoid btif_thread_post(thread_fn func, void *context); 58f450ba53dfd7b36989c1ea6ed9c6508c7a1b895eZach Johnson// End unvetted section 598ea8188a481504641fc6a72087704eb808d0bd87Zach Johnson 608df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson// Interface functions 618df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson 628df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnsonstatic void init_stack(void) { 638df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson // This is a synchronous process. Post it to the thread though, so 648df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson // state modification only happens there. 658df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson semaphore_t *semaphore = semaphore_new(0); 668df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson thread_post(management_thread, event_init_stack, semaphore); 678df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson semaphore_wait(semaphore); 68f5153bf62b6cee3f3c740504e94360130c3a9186Sharvil Nanavati semaphore_free(semaphore); 698df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson} 708df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson 718df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnsonstatic void start_up_stack_async(void) { 728df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson thread_post(management_thread, event_start_up_stack, NULL); 738df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson} 748df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson 758df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnsonstatic void shut_down_stack_async(void) { 768df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson thread_post(management_thread, event_shut_down_stack, NULL); 778df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson} 788df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson 798df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnsonstatic void clean_up_stack_async(void) { 808df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson thread_post(management_thread, event_clean_up_stack, NULL); 818df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson} 828df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson 83f450ba53dfd7b36989c1ea6ed9c6508c7a1b895eZach Johnsonstatic bool get_stack_is_running(void) { 84f450ba53dfd7b36989c1ea6ed9c6508c7a1b895eZach Johnson return stack_is_running; 85f450ba53dfd7b36989c1ea6ed9c6508c7a1b895eZach Johnson} 86f450ba53dfd7b36989c1ea6ed9c6508c7a1b895eZach Johnson 878df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson// Internal functions 888df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson 898df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson// Synchronous function to initialize the stack 908df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnsonstatic void event_init_stack(void *context) { 918df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson semaphore_t *semaphore = (semaphore_t *)context; 928df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson 938df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson if (!stack_is_initialized) { 9472f308ee6d3983ae2c0d67be3de2451f2dd72dcbZach Johnson module_management_start(); 9572f308ee6d3983ae2c0d67be3de2451f2dd72dcbZach Johnson 9696363ff2b78c10e2b2e106464f337b58ec1a616aZach Johnson module_init(get_module(BT_UTILS_MODULE)); 979b0fbce37260e69cb116be1cdcbceb1f43bf9346Zach Johnson module_init(get_module(BTIF_CONFIG_MODULE)); 988df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson btif_init_bluetooth(); 998df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson 1008df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson // stack init is synchronous, so no waiting necessary here 1018df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson stack_is_initialized = true; 1028df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson } 1038df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson 1048df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson if (semaphore) 1058df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson semaphore_post(semaphore); 1068df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson} 1078df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson 1088df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnsonstatic void ensure_stack_is_initialized(void) { 1098df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson if (!stack_is_initialized) { 1108df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson ALOGW("%s found the stack was uninitialized. Initializing now.", __func__); 1118df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson // No semaphore needed since we are calling it directly 1128df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson event_init_stack(NULL); 1138df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson } 1148df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson} 1158df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson 1168df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson// Synchronous function to start up the stack 1178df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnsonstatic void event_start_up_stack(UNUSED_ATTR void *context) { 1188df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson if (stack_is_running) { 1198df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson ALOGD("%s stack already brought up.", __func__); 1208df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson return; 1218df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson } 1228df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson 1238df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson ensure_stack_is_initialized(); 1248df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson 1258df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson ALOGD("%s is bringing up the stack.", __func__); 1268ea8188a481504641fc6a72087704eb808d0bd87Zach Johnson hack_future = future_new(); 1278ea8188a481504641fc6a72087704eb808d0bd87Zach Johnson 1289b0fbce37260e69cb116be1cdcbceb1f43bf9346Zach Johnson // Include this for now to put btif config into a shutdown-able state 1299b0fbce37260e69cb116be1cdcbceb1f43bf9346Zach Johnson module_start_up(get_module(BTIF_CONFIG_MODULE)); 130f450ba53dfd7b36989c1ea6ed9c6508c7a1b895eZach Johnson bte_main_enable(); 1318ea8188a481504641fc6a72087704eb808d0bd87Zach Johnson 1321924dac3811575d594c11b76874b24ee0ad24e71Zach Johnson if (future_await(hack_future) != FUTURE_SUCCESS) { 133efea7821780cdea2b30e944b08e418d1f2781878Zach Johnson stack_is_running = true; // So stack shutdown actually happens 1341924dac3811575d594c11b76874b24ee0ad24e71Zach Johnson event_shut_down_stack(NULL); 1351924dac3811575d594c11b76874b24ee0ad24e71Zach Johnson return; 1361924dac3811575d594c11b76874b24ee0ad24e71Zach Johnson } 1371924dac3811575d594c11b76874b24ee0ad24e71Zach Johnson 1381924dac3811575d594c11b76874b24ee0ad24e71Zach Johnson stack_is_running = true; 1398df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson ALOGD("%s finished", __func__); 140efea7821780cdea2b30e944b08e418d1f2781878Zach Johnson btif_thread_post(event_signal_stack_up, NULL); 1418df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson} 1428df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson 1438df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson// Synchronous function to shut down the stack 1448df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnsonstatic void event_shut_down_stack(UNUSED_ATTR void *context) { 1458df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson if (!stack_is_running) { 1468df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson ALOGD("%s stack is already brought down.", __func__); 1478df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson return; 1488df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson } 1498df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson 1508df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson ALOGD("%s is bringing down the stack.", __func__); 1518ea8188a481504641fc6a72087704eb808d0bd87Zach Johnson hack_future = future_new(); 1528df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson stack_is_running = false; 1538ea8188a481504641fc6a72087704eb808d0bd87Zach Johnson 1548ea8188a481504641fc6a72087704eb808d0bd87Zach Johnson btif_disable_bluetooth(); 1559b0fbce37260e69cb116be1cdcbceb1f43bf9346Zach Johnson module_shut_down(get_module(BTIF_CONFIG_MODULE)); 1568ea8188a481504641fc6a72087704eb808d0bd87Zach Johnson 1578ea8188a481504641fc6a72087704eb808d0bd87Zach Johnson future_await(hack_future); 15830e58068c1adaac7c5ccb3aa9cfb045d41d2a10eZach Johnson module_shut_down(get_module(CONTROLLER_MODULE)); // Doesn't do any work, just puts it in a restartable state 1598df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson ALOGD("%s finished.", __func__); 160efea7821780cdea2b30e944b08e418d1f2781878Zach Johnson btif_thread_post(event_signal_stack_down, NULL); 1618df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson} 1628df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson 1638df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnsonstatic void ensure_stack_is_not_running(void) { 1648df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson if (stack_is_running) { 1658df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson ALOGW("%s found the stack was still running. Bringing it down now.", __func__); 1668df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson event_shut_down_stack(NULL); 1678df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson } 1688df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson} 1698df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson 1708df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson// Synchronous function to clean up the stack 1718df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnsonstatic void event_clean_up_stack(UNUSED_ATTR void *context) { 1728df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson if (!stack_is_initialized) { 1738df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson ALOGD("%s found the stack already in a clean state.", __func__); 1748df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson return; 1758df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson } 1768df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson 1778df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson ensure_stack_is_not_running(); 1788df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson 1798ea8188a481504641fc6a72087704eb808d0bd87Zach Johnson ALOGD("%s is cleaning up the stack.", __func__); 1808ea8188a481504641fc6a72087704eb808d0bd87Zach Johnson hack_future = future_new(); 1818df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson stack_is_initialized = false; 1828ea8188a481504641fc6a72087704eb808d0bd87Zach Johnson 1838ea8188a481504641fc6a72087704eb808d0bd87Zach Johnson btif_shutdown_bluetooth(); 1849b0fbce37260e69cb116be1cdcbceb1f43bf9346Zach Johnson module_clean_up(get_module(BTIF_CONFIG_MODULE)); 18596363ff2b78c10e2b2e106464f337b58ec1a616aZach Johnson module_clean_up(get_module(BT_UTILS_MODULE)); 1868ea8188a481504641fc6a72087704eb808d0bd87Zach Johnson 1878ea8188a481504641fc6a72087704eb808d0bd87Zach Johnson future_await(hack_future); 1888675d884479deca722ef5d7776a165241457dd75Zach Johnson module_management_stop(); 1898df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson ALOGD("%s finished.", __func__); 1908df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson} 1918df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson 192efea7821780cdea2b30e944b08e418d1f2781878Zach Johnsonstatic void event_signal_stack_up(UNUSED_ATTR void *context) { 193eacc69d09256ecaa7c01ea066cd70b0049edc23bSharvil Nanavati // Notify BTIF connect queue that we've brought up the stack. It's 194eacc69d09256ecaa7c01ea066cd70b0049edc23bSharvil Nanavati // now time to dispatch all the pending profile connect requests. 195eacc69d09256ecaa7c01ea066cd70b0049edc23bSharvil Nanavati btif_queue_connect_next(); 196efea7821780cdea2b30e944b08e418d1f2781878Zach Johnson HAL_CBACK(bt_hal_cbacks, adapter_state_changed_cb, BT_STATE_ON); 197efea7821780cdea2b30e944b08e418d1f2781878Zach Johnson} 198efea7821780cdea2b30e944b08e418d1f2781878Zach Johnson 199efea7821780cdea2b30e944b08e418d1f2781878Zach Johnsonstatic void event_signal_stack_down(UNUSED_ATTR void *context) { 200efea7821780cdea2b30e944b08e418d1f2781878Zach Johnson HAL_CBACK(bt_hal_cbacks, adapter_state_changed_cb, BT_STATE_OFF); 201efea7821780cdea2b30e944b08e418d1f2781878Zach Johnson} 202efea7821780cdea2b30e944b08e418d1f2781878Zach Johnson 2038df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnsonstatic void ensure_manager_initialized(void) { 2048df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson if (management_thread) 2058df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson return; 2068df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson 2078df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson management_thread = thread_new("stack_manager"); 2088df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson if (!management_thread) { 2098df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson ALOGE("%s unable to create stack management thread.", __func__); 2108df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson return; 2118df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson } 2128df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson} 2138df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson 2148df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnsonstatic const stack_manager_t interface = { 2158df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson init_stack, 2168df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson start_up_stack_async, 2178df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson shut_down_stack_async, 218f450ba53dfd7b36989c1ea6ed9c6508c7a1b895eZach Johnson clean_up_stack_async, 219f450ba53dfd7b36989c1ea6ed9c6508c7a1b895eZach Johnson 220f450ba53dfd7b36989c1ea6ed9c6508c7a1b895eZach Johnson get_stack_is_running 2218df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson}; 2228df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson 2238df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnsonconst stack_manager_t *stack_manager_get_interface() { 2248df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson ensure_manager_initialized(); 2258df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson return &interface; 2268df0d80f0227554d95ed51a443439ee9e7fe7e42Zach Johnson} 2278ea8188a481504641fc6a72087704eb808d0bd87Zach Johnson 2288ea8188a481504641fc6a72087704eb808d0bd87Zach Johnsonfuture_t *stack_manager_get_hack_future() { 2298ea8188a481504641fc6a72087704eb808d0bd87Zach Johnson return hack_future; 2308ea8188a481504641fc6a72087704eb808d0bd87Zach Johnson} 231