do_signal

函数名称：do_signal_stop - handle group stop for SIGSTOP and other stop signals*@signr: signr causing group stop if initiating* If %JOBCTL_STOP_PENDING is not set yet, initiate group stop with @signr* and participate in it

函数原型：static bool do_signal_stop(int signr)__releases(&get_current()->sighand->siglock)

返回类型：bool

参数：

类型	参数	名称
int	signr

2302

sig等于signal

2304

如果非jobctl按位与JOBCTL_STOP_PENDING的值则

2305

gstop等于JOBCTL_STOP_PENDING按位或JOBCTL_STOP_CONSUME

2309

WARN_ON_ONCE(signr & ~signr of the last group stop )

2311

如果非此条件成立可能性大(为编译器优化)(jobctl & JOBCTL_STOP_DEQUEUED)或此条件成立可能性小(为编译器优化)(If true, all threads except ->group_exit_task have pending SIGKILL )则返回:false

2333

如果非see SIGNAL_* flags below 按位与job control stop in effect 的值则hread group exit support 等于signr

2336

hread group stop support, overloads group_exit_code too 等于0

2338

如果ask_set_jobctl_pending - set jobctl pending bits*@task: target task*@mask: pending bits to set* Clear @mask from @task->jobctl. @mask must be subset of* %JOBCTL_PENDING_MASK | %JOBCTL_STOP_CONSUME | %JOBCTL_STOP_SIGMASK |* %JOBCTL_TRAPPING则hread group stop support, overloads group_exit_code too 自加

2341

t等于当前进程

2348

如果非task_is_stopped(t)且ask_set_jobctl_pending - set jobctl pending bits*@task: target task*@mask: pending bits to set* Clear @mask from @task->jobctl. @mask must be subset of* %JOBCTL_PENDING_MASK | %JOBCTL_STOP_CONSUME | %JOBCTL_STOP_SIGMASK |* %JOBCTL_TRAPPING则

2350

hread group stop support, overloads group_exit_code too 自加

2351

如果此条件成立可能性大(为编译器优化)(!(ptrace & SEIZE used, enable new behavior ))则signal_wake_up(t, 0)

2353

否则ptrace_trap_notify - schedule trap to notify ptracer*@t: tracee wanting to notify tracer* This function schedules sticky ptrace trap which is cleared on the next* TRAP_STOP to notify ptracer of an event. @t must have been seized by* ptracer.

2359

如果此条件成立可能性大(为编译器优化)(!ptrace)则

2360

notify等于0

2367

如果ask_participate_group_stop - participate in a group stop*@task: task participating in a group stop*@task has %JOBCTL_STOP_PENDING set and is participating in a group stop.* Group stop states are cleared and the group stop count is consumed if则notify等于child has stopped

2370

set_special_state() should be used for those states when the blocking task* can not use the regular condition based wait-loop. In that case we must* serialize against wakeups such that any possible in-flight TASK_RUNNING stores(TASK_STOPPED)

2371

spin_unlock_irq( & siglock)

2382

如果notify则

2383

read_lock( & tasklist_lock)

2384

do_notify_parent_cldstop - notify parent of stopped/continued state change*@tsk: task reporting the state change*@for_ptracer: the notification is for ptracer*@why: CLD_{CONTINUED|STOPPED|TRAPPED} to report

2385

read_unlock( & tasklist_lock)

2389

cgroup_enter_frozen()

2390

freezable_schedule()

2391

返回:true

2392

否则

2397

ask_set_jobctl_pending - set jobctl pending bits*@task: target task*@mask: pending bits to set* Clear @mask from @task->jobctl. @mask must be subset of* %JOBCTL_PENDING_MASK | %JOBCTL_STOP_CONSUME | %JOBCTL_STOP_SIGMASK |* %JOBCTL_TRAPPING

2398

返回:false

**调用者**
名称	描述
get_signal

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

函数逻辑报告