interrupt

来源： https://stackoverflow.com/questions/24128926/what-happens-when-an-isr-is-running-and-another-interrupt-happens

来源： https://stackoverflow.com/questions/24128926/what-happens-when-an-isr-is-running-and-another-interrupt-happens

来源： https://stackoverflow.com/questions/38112585/tickless-kernel-isolcpus-nohz-full-and-rcu-nocbs

来源： https://stackoverflow.com/questions/38112585/tickless-kernel-isolcpus-nohz-full-and-rcu-nocbs

来源： https://stackoverflow.com/questions/34760507/how-to-setup-an-interrupt-driven-spi-with-stm32f4

问题 From multiple articles around the internet it's advised not to swallow InterruptedException . It makes much more sense to do it with thread pool executors something like this when I'm going to reuse the same thread. public static void main(String[] args) throws InterruptedException { ExecutorService executor = Executors.newSingleThreadExecutor(); Future<?> future = executor.submit(() -> { printNumbers(); // first call printNumbers(); // second call }); Thread.sleep(3_000); executor

问题 I'm creating a context switch program for a personal mini ARM kernel project and the context switch program is written entirely in Assembly. The problem is when I make a SVC call (svc 0) I enter the SVC_Handler but when I try to execute the next instruction I then enter a different handler ("UsageFault_Handler"). The fault occurs before I can pop any of the registers in the SVC_Handler. Here's a register dump of my gdb screen (right after I enter SVC_Handler and encounter UsageFault_Handler):

问题 I'm creating a context switch program for a personal mini ARM kernel project and the context switch program is written entirely in Assembly. The problem is when I make a SVC call (svc 0) I enter the SVC_Handler but when I try to execute the next instruction I then enter a different handler ("UsageFault_Handler"). The fault occurs before I can pop any of the registers in the SVC_Handler. Here's a register dump of my gdb screen (right after I enter SVC_Handler and encounter UsageFault_Handler):

问题 I'm creating a context switch program for a personal mini ARM kernel project and the context switch program is written entirely in Assembly. The problem is when I make a SVC call (svc 0) I enter the SVC_Handler but when I try to execute the next instruction I then enter a different handler ("UsageFault_Handler"). The fault occurs before I can pop any of the registers in the SVC_Handler. Here's a register dump of my gdb screen (right after I enter SVC_Handler and encounter UsageFault_Handler):

问题 I studied interrupts vs cyclical polling and learnt the advantages of interrupts that don't have to wait for a poll. Polling seemed to me just like event-driven programming or at least similar to a listener and what the polling does is actually much like listening to input or output. Do you agree or did I misunderstand any crucial difference between polling (cyclical listening) and event-driven programming (also listening with so-called listeners)? 回答1: Nope, quite the contrary interrupt