check_process

函数名称：Check for any per-thread CPU timers that have fired and move them* off the tsk->*_timers list onto the firing list. Per-thread timers* have already been taken off.

函数原型：static void check_process_timers(struct task_struct *tsk, struct list_head *firing)

返回类型：void

参数：

类型	参数	名称
struct task_struct *	tsk
struct list_head *	firing

906

sig等于信号

907

pct等于Empty if CONFIG_POSIX_TIMERS=n

916

如果非READ_ONCE(timers_active)或expiry_active则返回

923

expiry_active = true

929

proc_sample_cputime_atomic( & cputime_atomic, samples)

930

collect_posix_cputimers(pct, samples, firing)

935

check_cpu_itimer(tsk, & it[CPUCLOCK_PROF], & nextevt, samples[CPUCLOCK_PROF], SIGPROF)

938

check_cpu_itimer(tsk, & it[CPUCLOCK_VIRT], & nextevt, samples[CPUCLOCK_VIRT], SIGVTALRM)

942

soft等于task_rlimit(tsk, RLIMIT_CPU)

943

如果soft不等于RLIM_INFINITY则

945

hard等于task_rlimit_max(tsk, RLIMIT_CPU)

946

ptime等于samples[CPUCLOCK_PROF]

947

softns等于soft乘NSEC_PER_SEC

948

hardns等于hard乘NSEC_PER_SEC

951

如果hard不等于RLIM_INFINITY且check_rlimit(ptime, hardns, SIGKILL, TSC's on different sockets may be reset asynchronously.* This may cause the TSC ADJUST value on socket 0 to be NOT 0., true)则返回

956

如果check_rlimit(ptime, softns, SIGXCPU, TSC's on different sockets may be reset asynchronously.* This may cause the TSC ADJUST value on socket 0 to be NOT 0., false)则

957

rlim_cur等于soft加1

958

softns加等于NSEC_PER_SEC

962

如果softns小于nextevt则nextevt等于softns

966

如果Check whether all cache entries contain U64_MAX, i.e. eternal expiry time 则stop_process_timers(sig)

969

expiry_active = false

**调用者**
名称	描述
run_posix_cpu_timers	This is called from the timer interrupt handler. The irq handler has* already updated our counts. We need to check if any timers fire now.* Interrupts are disabled.

源代码转换工具开放的插件接口	X
支持：c/c++/esqlc/java Oracle/Informix/Mysql 插件可实现：逻辑报告代码生成和批量转换代码

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