UTRACE_FINISH_EXAMIN(9) utrace core API UTRACE_FINISH_EXAMIN(9)NAME
utrace_finish_examine - complete an examination of thread state
SYNOPSIS
int utrace_finish_examine(struct task_struct * target, struct utrace_engine * engine, struct utrace_examiner * exam);
ARGUMENTS
target
thread of interest, a struct task_struct pointer
engine
engine pointer returned by utrace_attach_task
exam
pointer passed to utrace_prepare_examine call
DESCRIPTION
This call completes an examination on the thread target begun by a paired utrace_prepare_examine call with the same arguments that returned
success (zero).
When target is current, this call is superfluous. When target is another thread, this returns zero if target has remained unscheduled since
the paired utrace_prepare_examine call returned zero.
When this returns an error, any examination done since the paired utrace_prepare_examine call is unreliable and the data extracted should
be discarded. The error is -EINVAL if engine is not keeping target stopped, or -EAGAIN if target woke up unexpectedly.
Kernel Hackers Manual 2.6. July 2010 UTRACE_FINISH_EXAMIN(9)
Check Out this Related Man Page
pthread_join(3T)pthread_join(3T)NAME
pthread_join() - wait for the termination of a specified thread
SYNOPSIS PARAMETERS
thread Thread whose termination is awaited by the caller.
value_ptr Pointer to the location where the exit status of thread is returned.
DESCRIPTION
The function waits for the termination of the target thread. If the target thread has already terminated, this function returns immedi-
ately. Only threads created with a detachstate attribute value of may be specified in the target thread parameter. On successful return
from the value_ptr argument, if it is not a null pointer, will contain the value passed to by the terminating thread.
When a call returns successfully, the caller is guaranteed the target thread has terminated. If more than one thread calls for the same
target thread, one thread is guaranteed to return successfully. Undefined behavior results for other callers specifying the same thread.
If the thread calling is canceled, the target thread shall not be joined. The exit status of the target thread will remain available for
another thread to call
If the target thread was canceled, its exit status is
It is unspecified whether a thread that has exited, but remains unjoined, counts against the limit.
RETURN VALUE
Upon successful completion, returns zero. Otherwise, an error number is returned to indicate the error (the variable is not set).
ERRORS
If any of the following occur, the function returns the corresponding error number:
[EINVAL] The value specified by thread does not refer to a joinable thread.
[ESRCH] No thread could be found corresponding to thread.
For each of the following conditions, if the condition is detected, the function returns the corresponding error number:
[EDEADLK] This operation would result in process deadlock or thread specifies the calling thread.
AUTHOR
was derived from the IEEE POSIX P1003.1c standard.
SEE ALSO pthread_create(3T), wait(2).
STANDARDS CONFORMANCE
Pthread Library pthread_join(3T)
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