WAIT_TASK_STOPPED(9) Driver Basics WAIT_TASK_STOPPED(9)NAME
wait_task_stopped - Wait for TASK_STOPPED or TASK_TRACED
SYNOPSIS
int wait_task_stopped(struct wait_opts * wo, int ptrace, struct task_struct * p);
ARGUMENTS
wo
wait options
ptrace
is the wait for ptrace
p
task to wait for
DESCRIPTION
Handle sys_wait4 work for p in state TASK_STOPPED or TASK_TRACED.
CONTEXT
read_lock(tasklist_lock), which is released if return value is non-zero. Also, grabs and releases p->sighand->siglock.
RETURNS
0 if wait condition didn't exist and search for other wait conditions should continue. Non-zero return, -errno on failure and p's pid on
success, implies that tasklist_lock is released and wait condition search should terminate.
COPYRIGHT Kernel Hackers Manual 3.10 June 2014 WAIT_TASK_STOPPED(9)
Check Out this Related Man Page
explain_wait_or_die(3) Library Functions Manual explain_wait_or_die(3)NAME
explain_wait_or_die - wait for process to change state and report errors
SYNOPSIS
#include <libexplain/wait.h>
void explain_wait_or_die(int *status);
DESCRIPTION
The explain_wait_or_die function is used to call the wait(2) system call. On failure an explanation will be printed to stderr, obtained
from explain_wait(3), and then the process terminates by calling exit(EXIT_FAILURE).
This function is intended to be used in a fashion similar to the following example:
explain_wait_or_die(status);
status The status, exactly as to be passed to the wait(2) system call.
Returns:
This function only returns on success. On failure, prints an explanation and exits.
SEE ALSO wait(2) wait for process to change state
explain_wait(3)
explain wait(2) errors
exit(2) terminate the calling process
COPYRIGHT
libexplain version 0.52
Copyright (C) 2008 Peter Miller
explain_wait_or_die(3)
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