本文整理汇总了C++中sem_ids函数的典型用法代码示例。如果您正苦于以下问题：C++ sem_ids函数的具体用法？C++ sem_ids怎么用？C++ sem_ids使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。
在下文中一共展示了sem_ids函数的7个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: krg_shm_flush_set
int krg_shm_flush_set(struct ipc_namespace *ns)
{
struct krgipc_ops *shmops;
down_write(&sem_ids(ns).rw_mutex);
shmops = shm_ids(ns).krgops;
_kddm_flush_set(shmops->data_kddm_set, ipc_flusher, NULL);
_kddm_flush_set(shmops->map_kddm_set, ipc_flusher, NULL);
_kddm_flush_set(shmops->key_kddm_set, ipc_flusher, NULL);
up_write(&sem_ids(ns).rw_mutex);
return 0;
}示例2: newary
static int newary(struct ipc_namespace *ns, struct ipc_params *params)
{
int id;
int retval;
struct sem_array *sma;
int size;
key_t key = params->key;
int nsems = params->u.nsems;
int semflg = params->flg;
int i;
if (!nsems)
return -EINVAL;
if (ns->used_sems + nsems > ns->sc_semmns)
return -ENOSPC;
size = sizeof (*sma) + nsems * sizeof (struct sem);
sma = ipc_rcu_alloc(size);
if (!sma) {
return -ENOMEM;
}
memset (sma, 0, size);
sma->sem_perm.mode = (semflg & S_IRWXUGO);
sma->sem_perm.key = key;
sma->sem_perm.security = NULL;
retval = security_sem_alloc(sma);
if (retval) {
ipc_rcu_putref(sma);
return retval;
}
id = ipc_addid(&sem_ids(ns), &sma->sem_perm, ns->sc_semmni);
if (id < 0) {
security_sem_free(sma);
ipc_rcu_putref(sma);
return id;
}
ns->used_sems += nsems;
sma->sem_base = (struct sem *) &sma[1];
for (i = 0; i < nsems; i++) {
INIT_LIST_HEAD(&sma->sem_base[i].sem_pending);
spin_lock_init(&sma->sem_base[i].lock);
}
sma->complex_count = 0;
INIT_LIST_HEAD(&sma->sem_pending);
INIT_LIST_HEAD(&sma->list_id);
sma->sem_nsems = nsems;
sma->sem_ctime = get_seconds();
sem_unlock(sma, -1);
rcu_read_unlock();
return sma->sem_perm.id;
}示例3: ipc_obtain_object
static inline struct sem_array *sem_obtain_object(struct ipc_namespace *ns, int id)
{
struct kern_ipc_perm *ipcp = ipc_obtain_object(&sem_ids(ns), id);
if (IS_ERR(ipcp))
return ERR_CAST(ipcp);
return container_of(ipcp, struct sem_array, sem_perm);
}示例4: SYSCALL_DEFINE3
SYSCALL_DEFINE3(semget, key_t, key, int, nsems, int, semflg)
{
struct ipc_namespace *ns;
struct ipc_ops sem_ops;
struct ipc_params sem_params;
ns = current->nsproxy->ipc_ns;
if (nsems < 0 || nsems > ns->sc_semmsl)
return -EINVAL;
sem_ops.getnew = newary;
sem_ops.associate = sem_security;
sem_ops.more_checks = sem_more_checks;
sem_params.key = key;
sem_params.flg = semflg;
sem_params.u.nsems = nsems;
return ipcget(ns, &sem_ids(ns), &sem_ops, &sem_params);
}示例5: sem_exit_ns
void sem_exit_ns(struct ipc_namespace *ns)
{
free_ipcs(ns, &sem_ids(ns), freeary);
}示例6: for_all_ipc_sem
void for_all_ipc_sem(string ipc_cb)
{
for_all_ipc_ids(init_nsproxy.ipc_ns, &sem_ids(init_nsproxy.ipc_ns), ipc_cb);
}示例7: ipc_lock
struct sem_array *sem_lock(struct ipc_namespace *ns, int id)
{
struct kern_ipc_perm *ipcp = ipc_lock(&sem_ids(ns), id);
return container_of(ipcp, struct sem_array, sem_perm);
}