1 /* 2 * libqos driver framework 3 * 4 * Copyright (c) 2018 Emanuele Giuseppe Esposito <e.emanuelegiuseppe@gmail.com> 5 * 6 * This library is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU Lesser General Public 8 * License version 2.1 as published by the Free Software Foundation. 9 * 10 * This library is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 * Lesser General Public License for more details. 14 * 15 * You should have received a copy of the GNU Lesser General Public 16 * License along with this library; if not, see <http://www.gnu.org/licenses/> 17 */ 18 19 #include "qemu/osdep.h" 20 #include <getopt.h> 21 #include "libqtest.h" 22 #include "qapi/qmp/qdict.h" 23 #include "qapi/qmp/qbool.h" 24 #include "qapi/qmp/qstring.h" 25 #include "qemu/module.h" 26 #include "qapi/qmp/qlist.h" 27 #include "libqos/malloc.h" 28 #include "libqos/qgraph.h" 29 #include "libqos/qgraph_internal.h" 30 #include "libqos/qos_external.h" 31 32 static void machine_apply_to_node(const char *name) 33 { 34 char *machine_name = g_strconcat(qtest_get_arch(), "/", name, NULL); 35 36 qos_graph_node_set_availability(machine_name, true); 37 g_free(machine_name); 38 } 39 40 void machines_apply_to_node(MachineInfoList *mach_info) 41 { 42 MachineInfoList *tail; 43 44 for (tail = mach_info; tail; tail = tail->next) { 45 machine_apply_to_node(tail->value->name); 46 if (tail->value->alias) { 47 machine_apply_to_node(tail->value->alias); 48 } 49 } 50 } 51 52 static void type_apply_to_node(const char *name, bool is_abstract) 53 { 54 qos_graph_node_set_availability(name, true); 55 if (is_abstract) { 56 qos_delete_cmd_line(name); 57 } 58 } 59 60 void types_apply_to_node(ObjectTypeInfoList *type_info) 61 { 62 ObjectTypeInfoList *tail; 63 64 for (tail = type_info; tail; tail = tail->next) { 65 type_apply_to_node(tail->value->name, tail->value->abstract); 66 } 67 } 68 69 static QGuestAllocator *get_machine_allocator(QOSGraphObject *obj) 70 { 71 return obj->get_driver(obj, "memory"); 72 } 73 74 /** 75 * allocate_objects(): given an array of nodes @arg, 76 * walks the path invoking all constructors and 77 * passing the corresponding parameter in order to 78 * continue the objects allocation. 79 * Once the test is reached, return the object it consumes. 80 * 81 * Since the machine and QEDGE_CONSUMED_BY nodes allocate 82 * memory in the constructor, g_test_queue_destroy is used so 83 * that after execution they can be safely free'd. (The test's 84 * ->before callback is also welcome to use g_test_queue_destroy). 85 * 86 * Note: as specified in walk_path() too, @arg is an array of 87 * char *, where arg[0] is a pointer to the command line 88 * string that will be used to properly start QEMU when executing 89 * the test, and the remaining elements represent the actual objects 90 * that will be allocated. 91 */ 92 void *allocate_objects(QTestState *qts, char **path, QGuestAllocator **p_alloc) 93 { 94 int current = 0; 95 QGuestAllocator *alloc; 96 QOSGraphObject *parent = NULL; 97 QOSGraphEdge *edge; 98 QOSGraphNode *node; 99 void *edge_arg; 100 void *obj; 101 102 node = qos_graph_get_node(path[current]); 103 g_assert(node->type == QNODE_MACHINE); 104 105 obj = qos_machine_new(node, qts); 106 qos_object_queue_destroy(obj); 107 108 alloc = get_machine_allocator(obj); 109 if (p_alloc) { 110 *p_alloc = alloc; 111 } 112 113 for (;;) { 114 if (node->type != QNODE_INTERFACE) { 115 qos_object_start_hw(obj); 116 parent = obj; 117 } 118 119 /* follow edge and get object for next node constructor */ 120 current++; 121 edge = qos_graph_get_edge(path[current - 1], path[current]); 122 node = qos_graph_get_node(path[current]); 123 124 if (node->type == QNODE_TEST) { 125 g_assert(qos_graph_edge_get_type(edge) == QEDGE_CONSUMED_BY); 126 return obj; 127 } 128 129 switch (qos_graph_edge_get_type(edge)) { 130 case QEDGE_PRODUCES: 131 obj = parent->get_driver(parent, path[current]); 132 break; 133 134 case QEDGE_CONSUMED_BY: 135 edge_arg = qos_graph_edge_get_arg(edge); 136 obj = qos_driver_new(node, obj, alloc, edge_arg); 137 qos_object_queue_destroy(obj); 138 break; 139 140 case QEDGE_CONTAINS: 141 obj = parent->get_device(parent, path[current]); 142 break; 143 } 144 } 145 } 146 147