ChangeNotifier侦听器并进行处置内存泄漏？

问题描述

我很好奇，如果创建新对象会删除所有附加的侦听器。 这是简单的代码：

org 0x7c00
bits 16
mov ax,HELLO_MSG ;Print a simple hello message :D
call _printString
xor ax,ax
;Here,we'll load the kernel into RAM
call LoadKernel
;Enter protected mode
call EnterProtMode

EnterProtMode:
    cli ;disable interrupts
    lgdt [gdt_pointer] ;Load the GDT register with the start address of the GDT
    mov eax,cr0
    or al,1 ;Set PE (protection enable) bit in CR0
    mov cr0,eax
    jmp 08h:Stage2 ;Jump to stage 2

LoadKernel:
    mov bx,KERNEL_OFFSET ;Load the kernel offset into bx
    mov dh,16 ;Load 16 sectors 
    mov dl,[BOOT_DRIVE] ;The disk to read from
    call diskload ;Load the kernel
    ret

bits 32
KERNEL_OFFSET equ 0x1000
BOOT_DRIVE: db 0

Stage2:
    mov ax,DATA_SEG
    mov ds,ax
    mov es,ax
    mov fs,ax
    mov gs,ax
    mov ss,ax
    mov ebp,0x90000
    mov esp,ebp
    ;Kernel entry here
    jmp KERNEL_OFFSET ;Call the kernel finally

%include 'boot/printUtils.asm'
%include 'boot/gdt.asm'
%include 'boot/diskload.asm'

HELLO_MSG: db "Booted successfully,loading kernel.",0
times 510 - ($ - $$) db 0
dw 0xaa55

解决方法

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