Struct binder_alloc
Webbinder_alloc_debug(BINDER_DEBUG_USER_ERROR, "%d: binder_alloc_buf, no vma\n", alloc->pid); return ERR_PTR(-ESRCH);} + mmap_read_unlock(alloc->vma_vm_mm); …
Struct binder_alloc
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WebMay 13, 2024 · buffer = rb_entry(best_fit, struct binder_buffer, rb_node);//找到这一块. buffer_size = binder_alloc_buffer_size(alloc, buffer);//计算大小} … WebApr 3, 2024 · The address space is used for both user-visible buffers and for * struct binder_buffer objects used to track the user buffers */ struct binder_alloc {struct mutex mutex; struct vm_area_struct * vma; struct mm_struct * vma_vm_mm; void __user * buffer; struct list_head buffers; struct rb_root free_buffers; struct rb_root allocated_buffers; …
WebMessage ID: [email protected] (mailing list archive)State: New, archived: Headers: show Webstatic struct binder_buffer *binder_alloc_buf(struct binder_proc *proc, size_t data_size, size_t offsets_size, int is_async) {struct rb_node *n = proc->free_buffers.rb_node; struct binder_buffer *buffer; size_t buffer_size; struct rb_node *best_fit = NULL; void *has_page_addr;
Web* struct binder_ref - struct to track references on nodes * @data: binder_ref_data containing id, handle, and current refcounts * @rb_node_desc: node for lookup by @data.desc in proc's rb_tree ... struct binder_alloc alloc; struct binder_context * context; spinlock_t inner_lock; spinlock_t outer_lock;}; enum {BINDER_LOOPER_STATE_REGISTERED = 0x01, WebFeb 8, 2012 · To allocate a buffer, the client needs to fill in all the fields except the handle field in this data structure: struct ion_allocation_data { size_t len; size_t align; unsigned int flags; struct ion_handle *handle; } The handle field is the output ... On Android devices the BINDER IPC mechanism may be used to send fd to another process for sharing.
Webstruct binder_alloc *alloc, uintptr_t user_ptr) { struct rb_node *n = alloc-> allocated_buffers. rb_node; struct binder_buffer *buffer; void __user *uptr; uptr = ( void __user *)user_ptr; while (n) { buffer = rb_entry (n, struct binder_buffer, rb_node); BUG_ON (buffer-> free ); if (uptr < buffer-> user_data) n = n-> rb_left;
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