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heyxhh avatar heyxhh commented on September 26, 2024

我自问自答一下：
linux的栈是从高地址到低地址生长的，top = S->stack + STACH_SIZE是运行上下文的栈底
声明char dummy = 0,会将dummy压栈，则dummy的首地址是其没压栈时stack的栈顶
那么，top - &dummy的值为dummy压栈前栈已用空间的大小

from annotatedcode.

chenyahui avatar chenyahui commented on September 26, 2024

我自问自答一下：
linux的栈是从高地址到低地址生长的，top = S->stack + STACH_SIZE是运行上下文的栈底
声明char dummy = 0,会将dummy压栈，则dummy的首地址是其没压栈时stack的栈顶
那么，top - &dummy的值为dummy压栈前栈已用空间的大小

@heyxhh 分析的很好，关于coroutine的具体分析可以看我的博客: 《云风 coroutine 协程库源码分析》
https://www.cyhone.com/articles/analysis-of-cloudwu-coroutine/

里面相关细节都有

from annotatedcode.

heyxhh avatar heyxhh commented on September 26, 2024

我自问自答一下：
linux的栈是从高地址到低地址生长的，top = S->stack + STACH_SIZE是运行上下文的栈底
声明char dummy = 0,会将dummy压栈，则dummy的首地址是其没压栈时stack的栈顶
那么，top - &dummy的值为dummy压栈前栈已用空间的大小

@heyxhh 分析的很好，关于coroutine的具体分析可以看我的博客: 《云风 coroutine 协程库源码分析》
https://www.cyhone.com/articles/analysis-of-cloudwu-coroutine/

里面相关细节都有

好的 多谢分享

from annotatedcode.

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