在android的binder中onTransact函数起什么作用

yjryjryjr

在android的binder中onTransact函数起什么作用

lybxfans

转载：我就是进来看看的~~~

yjryjryjr

struct binder_proc {
    struct hlist_node proc_node;
    struct rb_root threads;
    struct rb_root nodes;
    struct rb_root refs_by_desc;
    struct rb_root refs_by_node;
    int pid;
    struct vm_area_struct *vma;
    struct task_struct *tsk;
    struct files_struct *files;
    struct hlist_node deferred_work_node;
    int deferred_work;
    void *buffer;
    ptrdiff_t user_buffer_offset;
    struct list_head buffers;
    struct rb_root free_buffers;
    struct rb_root allocated_buffers;
    size_t free_async_space;
    struct page **pages;
    size_t buffer_size;
    uint32_t buffer_free;
    struct list_head todo;
    wait_queue_head_t wait;
    struct binder_stats stats;
    struct list_head delivered_death;
    int max_threads;
    int requested_threads;
    int requested_threads_started;
    int ready_threads;
    long default_priority;
};

这个结构中，各个数据的意义？