Technorati 标签: current thread_info 在内核中,可以通过current宏来获得当前执行进程的task_struct指针。现在来简要分析以下: 最原始的定义如下: #define current get_current() #define get_current() (
小结:在早期的内核中,比如2.6.32,通过current_thread_info()->task得到struct task_struct在x86上也是支持的。所以通过current_thread_info()->task和 Per CPU 变量都可以来获取current。 如图所示: 图片来自:极客时间 趣谈 Linux 操作系统 2.3.2 现在的内核版本 // linux-4.10.1/include/linux/sched.h struct...
current其实一个struct task_struct指针,指向当前进程 struct task_struct *task又是struct thread_info的一个成员变量。 thread_info可以从sp寄存器得到 //linux-imx/include/asm-generic/current.h #define get_current() (current_thread_info()->task) #define current get_current() //linux-imx/arch/arm/i...
DECLARE_PER_CPU(structtask_struct *, current_task);static__always_inlinestructtask_struct *get_current(void){returnthis_cpu_read_stable(current_task); }#definecurrent get_current() get_current() is again returning struct task_struct, why are we typecasting it to struct thread_...
/* file system info */ int link_count, total_link_count; /* ipc stuff */ struct sysv_sem sysvsem; /* CPU-specific state of this task */ struct thread_struct thread; /* filesystem information */ struct fs_struct *fs; /* open file information */ ...
@@ -33,7 +33,7 @@ register struct k_thread *__arch_current_thread __asm__("gp"); #define arch_current_thread() __arch_current_thread #define arch_current_thread_set(thread) \ do { \ - _current_cpu->current = __arch_current_thread = (thread); \ ...
importorg.springframework.util.StopWatch;publicclassSpringStopWatchExample3{publicstaticvoidmain(String[]args)throws InterruptedException{StopWatch sw=newStopWatch();sw.start("A");Thread.sleep(500);sw.stop();sw.start("B");Thread.sleep(300);sw.stop();sw.start("C");Thread.sleep(200);sw.stop...
I just ran my first test using the Intel XTU software and I assume "The CPU Current Throttled" message I am seeing is in relation to what my motherboard is able to handle for the CPU? It's paired mostly with "The CPU ExternalVR Throttled". I'm hoping someone can provide a little ...
the logical cpu id ? You shouldn't need anything special from the framework to do that. Syscalls like getcpu() will get the info you need, and I am sure there is some Rust package exposing that. Keep in mind though that unless the thread is pinned, it can move to different CPUs. ...
and get_thread_info() both of which are actually *per-threadvariables implemented as per-cpu ...