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关于非中断导致的线程切换为什么没有保存线程的上下文 #7

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xiaozuobo opened this issue Apr 8, 2024 · 3 comments
Open

关于非中断导致的线程切换为什么没有保存线程的上下文 #7

xiaozuobo opened this issue Apr 8, 2024 · 3 comments

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@xiaozuobo
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通过中断导致进程切换时，中断通用操作中有保护上下文的操作，但是为什么信号量导致的线程切换没有保护上下文，是不需要么？
@fzmyg
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fzmyg commented Apr 22, 2024

同问

@Ares-bit
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通过中断导致进程切换时，中断通用操作中有保护上下文的操作，但是为什么信号量导致的线程切换没有保护上下文，是不需要么？

纯C之间调用编译器帮你生成了保存上下文的语句，不需要自己再写了，中断是自己实现的纯汇编，要手动pushad

@Ares-bit
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同问

纯C之间调用编译器帮你生成了保存上下文的语句，不需要自己再写了，中断是自己实现的纯汇编，要手动pushad

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3 participants
@Ares-bit @xiaozuobo @fzmyg