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Diffstat (limited to 'src/irmd/main.c')
-rw-r--r--src/irmd/main.c127
1 files changed, 115 insertions, 12 deletions
diff --git a/src/irmd/main.c b/src/irmd/main.c
index b660511c..aba69224 100644
--- a/src/irmd/main.c
+++ b/src/irmd/main.c
@@ -82,7 +82,7 @@ struct reg_name_entry {
char * req_ap_name;
char * req_ae_name;
int response;
- bool flow_arrived;
+ int flow_arrived;
pthread_cond_t acc_signal;
pthread_mutex_t acc_lock;
@@ -121,6 +121,9 @@ struct irm {
pthread_t * threadpool;
pthread_mutex_t r_lock;
+
+ bool shutdown;
+ pthread_mutex_t s_lock;
} * instance = NULL;
static struct port_map_entry * port_map_entry_create()
@@ -278,7 +281,7 @@ static struct reg_name_entry * reg_name_entry_create()
e->accept = false;
e->req_ap_name = NULL;
e->req_ae_name = NULL;
- e->flow_arrived = false;
+ e->flow_arrived = -1;
if (pthread_cond_init(&e->acc_signal, NULL)) {
free(e);
@@ -313,6 +316,14 @@ static int reg_name_entry_destroy(struct reg_name_entry * e)
if (e == NULL)
return 0;
+ if (e->accept) {
+ pthread_mutex_lock(&e->acc_lock);
+ e->flow_arrived = -2;
+ pthread_mutex_unlock(&e->acc_lock);
+ pthread_cond_broadcast(&e->acc_signal);
+ sched_yield();
+ }
+
free(e->name);
instance_name_destroy(e->api);
@@ -323,6 +334,8 @@ static int reg_name_entry_destroy(struct reg_name_entry * e)
free(e);
+ e = NULL;
+
return 0;
}
@@ -397,6 +410,14 @@ static pid_t create_ipcp(char * ap_name,
pid_t pid;
struct ipcp_entry * tmp = NULL;
+ pthread_mutex_lock(&instance->s_lock);
+ if (instance->shutdown) {
+ pthread_mutex_unlock(&instance->s_lock);
+ return -1;
+ }
+ pthread_mutex_unlock(&instance->s_lock);
+
+
pid = ipcp_create(ap_name, ipcp_type);
if (pid == -1) {
LOG_ERR("Failed to create IPCP.");
@@ -476,6 +497,13 @@ static int bootstrap_ipcp(instance_name_t * api,
{
struct ipcp_entry * entry = NULL;
+ pthread_mutex_lock(&instance->s_lock);
+ if (instance->shutdown) {
+ pthread_mutex_unlock(&instance->s_lock);
+ return -1;
+ }
+ pthread_mutex_unlock(&instance->s_lock);
+
pthread_mutex_lock(&instance->r_lock);
if (api->id == 0)
@@ -525,6 +553,13 @@ static int enroll_ipcp(instance_name_t * api,
ssize_t n_1_difs_size = 0;
struct ipcp_entry * entry = NULL;
+ pthread_mutex_lock(&instance->s_lock);
+ if (instance->shutdown) {
+ pthread_mutex_unlock(&instance->s_lock);
+ return -1;
+ }
+ pthread_mutex_unlock(&instance->s_lock);
+
pthread_mutex_lock(&instance->r_lock);
entry = get_ipcp_entry_by_name(api);
@@ -580,6 +615,13 @@ static int reg_ipcp(instance_name_t * api,
char ** difs,
size_t difs_size)
{
+ pthread_mutex_lock(&instance->s_lock);
+ if (instance->shutdown) {
+ pthread_mutex_unlock(&instance->s_lock);
+ return -1;
+ }
+ pthread_mutex_unlock(&instance->s_lock);
+
if (ipcp_reg(api->id, difs, difs_size)) {
LOG_ERR("Could not register IPCP to N-1 DIF(s).");
return -1;
@@ -614,6 +656,12 @@ static int ap_reg(char * ap_name,
instance_name_t * api = NULL;
instance_name_t * ipcpi = NULL;
+ pthread_mutex_lock(&instance->s_lock);
+ if (instance->shutdown) {
+ pthread_mutex_unlock(&instance->s_lock);
+ return -1;
+ }
+ pthread_mutex_unlock(&instance->s_lock);
pthread_mutex_lock(&instance->r_lock);
@@ -742,6 +790,7 @@ static int ap_unreg(char * ap_name,
}
}
+ /* FIXME: check if name is not registered in any DIF before removing */
reg_name_entry_del_name(rne->name);
pthread_mutex_unlock(&instance->r_lock);
@@ -756,6 +805,12 @@ static struct port_map_entry * flow_accept(pid_t pid,
struct port_map_entry * pme;
struct reg_name_entry * rne = NULL;
+ pthread_mutex_lock(&instance->s_lock);
+ if (instance->shutdown) {
+ pthread_mutex_unlock(&instance->s_lock);
+ return NULL;
+ }
+ pthread_mutex_unlock(&instance->s_lock);
pthread_mutex_lock(&instance->r_lock);
rne = get_reg_name_entry_by_id(pid);
@@ -771,15 +826,30 @@ static struct port_map_entry * flow_accept(pid_t pid,
}
rne->accept = true;
- rne->flow_arrived = false;
+ rne->flow_arrived = -1;
pthread_mutex_unlock(&instance->r_lock);
+
pthread_mutex_lock(&rne->acc_lock);
+ pthread_cleanup_push((void(*)(void *))pthread_mutex_unlock,
+ (void*) &rne->acc_lock);
- while (!rne->flow_arrived)
+ while (rne->flow_arrived == -1)
pthread_cond_wait(&rne->acc_signal, &rne->acc_lock);
pthread_mutex_unlock(&rne->acc_lock);
+ pthread_cleanup_pop(0);
+
+ pthread_mutex_lock(&rne->acc_lock);
+
+ /* ap with pending accept being unregistered */
+ if (rne->flow_arrived == -2 ) {
+ pthread_mutex_unlock(&rne->acc_lock);
+ return NULL;
+ }
+
+ pthread_mutex_unlock(&rne->acc_lock);
+
pthread_mutex_lock(&instance->r_lock);
pme = get_port_map_entry_n(pid);
@@ -805,6 +875,13 @@ static int flow_alloc_resp(pid_t n_pid,
struct port_map_entry * pme = NULL;
struct reg_name_entry * rne = NULL;
+ pthread_mutex_lock(&instance->s_lock);
+ if (instance->shutdown) {
+ pthread_mutex_unlock(&instance->s_lock);
+ return -1;
+ }
+ pthread_mutex_unlock(&instance->s_lock);
+
pthread_mutex_lock(&instance->r_lock);
rne = get_reg_name_entry_by_id(n_pid);
@@ -826,7 +903,7 @@ static int flow_alloc_resp(pid_t n_pid,
*/
rne->accept = false;
- rne->flow_arrived = false;
+ rne->flow_arrived = -1;
if (!response) {
pme = get_port_map_entry(port_id);
@@ -850,6 +927,13 @@ static struct port_map_entry * flow_alloc(pid_t pid,
struct port_map_entry * pme;
instance_name_t * ipcp;
+ pthread_mutex_lock(&instance->s_lock);
+ if (instance->shutdown) {
+ pthread_mutex_unlock(&instance->s_lock);
+ return NULL;
+ }
+ pthread_mutex_unlock(&instance->s_lock);
+
pme = port_map_entry_create();
if (pme == NULL) {
LOG_ERR("Failed malloc of port_map_entry.");
@@ -901,6 +985,13 @@ static int flow_alloc_res(int port_id)
{
struct port_map_entry * e;
+ pthread_mutex_lock(&instance->s_lock);
+ if (instance->shutdown) {
+ pthread_mutex_unlock(&instance->s_lock);
+ return -1;
+ }
+ pthread_mutex_unlock(&instance->s_lock);
+
pthread_mutex_lock(&instance->r_lock);
e = get_port_map_entry(port_id);
@@ -981,6 +1072,13 @@ static struct port_map_entry * flow_req_arr(pid_t pid,
struct reg_name_entry * rne;
struct port_map_entry * pme;
+ pthread_mutex_lock(&instance->s_lock);
+ if (instance->shutdown) {
+ pthread_mutex_unlock(&instance->s_lock);
+ return NULL;
+ }
+ pthread_mutex_unlock(&instance->s_lock);
+
pme = malloc(sizeof(*pme));
if (pme == NULL) {
LOG_ERR("Failed malloc of port_map_entry.");
@@ -1004,14 +1102,14 @@ static struct port_map_entry * flow_req_arr(pid_t pid,
pme->n_pid = rne->api->id;
- list_add(&pme->next, &instance->port_map);
-
rne->req_ap_name = strdup(ap_name);
rne->req_ae_name = strdup(ae_name);
+ list_add(&pme->next, &instance->port_map);
+
pthread_mutex_lock(&rne->acc_lock);
- rne->flow_arrived = true;
+ rne->flow_arrived = 0;
if (pthread_cond_signal(&rne->acc_signal))
LOG_ERR("Failed to send signal.");
@@ -1020,7 +1118,6 @@ static struct port_map_entry * flow_req_arr(pid_t pid,
pthread_mutex_unlock(&instance->r_lock);
-
return pme;
}
@@ -1076,7 +1173,7 @@ static int flow_dealloc_ipcp(int port_id)
return 0;
}
-static void irm_destroy(struct irm * irm)
+static void irm_destroy(struct irm * irm)
{
struct list_head * h;
struct list_head * t;
@@ -1084,6 +1181,10 @@ static void irm_destroy(struct irm * irm)
if (irm == NULL)
return;
+ pthread_mutex_lock(&irm->s_lock);
+ instance->shutdown = true;
+ pthread_mutex_unlock(&irm->s_lock);
+
if (irm->threadpool != NULL)
free(irm->threadpool);
@@ -1100,7 +1201,7 @@ static void irm_destroy(struct irm * irm)
struct reg_name_entry,
next);
list_del(&e->next);
- free(e);
+ reg_name_entry_destroy(e);
}
list_for_each_safe(h, t, &irm->port_map) {
@@ -1358,7 +1459,9 @@ static struct irm * irm_create()
return NULL;
}
- if (pthread_mutex_init(&i->r_lock, NULL)) {
+ i->shutdown = false;
+
+ if (pthread_mutex_init(&i->s_lock, NULL)) {
irm_destroy(i);
return NULL;
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-01 17:04:46 +0000