邮箱结构体

📚 本节导读

用途：邮箱控制块结构

来源：kernel/include/os_dummy.h:125

一、结构体定义

struct dummy_mailbox
{
    void *mail_pool_dummy;       /* The address that doesn't do alignment for mail pool */
    void *mail_pool_align_dummy; /* Aligned address of mail pool. */

    os_list_node_t send_task_list_head_dummy; /* Sender tasks blocked on this mailbox */
    os_list_node_t recv_task_list_head_dummy; /* Receiver tasks blocked on this mailbox */

    os_list_node_t resource_node_dummy; /* Node in resource list */

    uint16_t capacity_dummy;    /* Max number of mails for this mailbox */
    uint16_t used_mails_dummy;  /* Numbers of mails into mailbox */
    uint16_t read_index_dummy;  /* Read index of mail pool */
    uint16_t write_index_dummy; /* Write index of mail pool */

    uint8_t object_inited_dummy;     /* Indicates whether object is inited or deinited, value is
                                      OS_KOBJ_INITED or OS_KOBJ_DEINITED */
    uint8_t object_alloc_type_dummy; /* Indicates whether object is allocated dynamically or statically,
                                      value is OS_ALLOC_TYPE_STATIC or OS_KOBJ_ALLOC_TYPE_DYNAMIC */
    uint8_t wake_type_dummy;         /* The type to wake up blocking tasks, value is OS_MB_WAKE_TYPE_PRIO
                                      or OS_MB_WAKE_TYPE_FIFO */

    char name_dummy[OS_NAME_MAX + 1]; /* Mailbox name */

    os_spinlock_t lock_dummy; /* Spin lock used under SMP */
};
typedef struct dummy_mailbox dummy_mailbox_t;