/*
* Copyright ( C ) 2020 The Android Open Source Project
*
* 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 .
*/
#pragma once
#include <lib/coverage/common/cov_shm.h>
#include <lib/tipc/tipc_srv.h>
#include <lk/list.h>
#include <stddef.h>
#include <string.h>
#include <trusty/uuid.h>
/* Assume we have no more than 256 TAs running at the same time */
#define MAX_NUM_APPS 256
/**
* struct srv_state - global state of the coverage server
* @ hset : handle set
* @ coverage_record_list : list of coverage records
* @ mailbox : mailbox used to broadcast events
*/
struct srv_state {
struct tipc_hset* hset;
/*
* TODO : A hash map would be nice . But we only have a list implementation
* that ' s readily available . It should be good enough though , since the list
* is short ( < 100 ) and lookups / insertions are very infrequent .
*/
struct list_node coverage_record_list;
struct cov_shm mailbox;
};
static inline void set_srv_state(struct tipc_port* port,
struct srv_state* state) {
port->priv = state;
}
static inline struct srv_state* get_srv_state(const struct tipc_port* port) {
return (struct srv_state*)(port->priv);
}
/**
* struct coverage_record - code coverage record about a given TA
* @ node : list node
* @ uuid : UUID of target TA
* @ idx : unique index assigned to this record and corresponding TA
* @ data : shared memory region holding the coverage record
* @ record_len : length of coverage record within @ data
*/
struct coverage_record {
struct list_node node;
struct uuid uuid;
size_t idx;
struct cov_shm data;
size_t record_len;
};
static inline bool equal_uuid(const struct uuid* a, const struct uuid* b) {
return memcmp(a, b, sizeof (struct uuid)) == 0 ;
}
static inline struct coverage_record* find_coverage_record(
struct list_node* head,
const struct uuid* uuid) {
struct coverage_record* record;
list_for_every_entry(head, record, struct coverage_record, node) {
if (equal_uuid(&record->uuid, uuid)) {
return record;
}
}
return NULL;
}
/**
* coverage_aggregator_init ( ) - initialize coverage aggregator service
* @ state : pointer to global & struct srv_state
*
* Return : 0 on success , negative error code on error
*/
int coverage_aggregator_init(struct srv_state* state);
/**
* coverage_client_init ( ) - initialize coverage client service
* @ state : pointer to global & struct srv_state
*
* Return : 0 on success , negative error code on error
*/
int coverage_client_init(struct srv_state* state);
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