process active

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Alairion edited this page May 8, 2021 · 4 revisions

nes::process::active

Functions

(1) bool active() const;

Checks if the process is still running. The process must be joinable.

Parameters

None.

Return value

Returns true if the process is still running.

Preconditions

joinable() returns true.

Complexity

Constant.

Exceptions

May throw a std::runtime_error if the state of the process can not be obtained.

Implementation details

On Windows, returns WaitForSingleObject(handle, 0) == WAIT_TIMEOUT
On Posix systems, returns kill(handle, 0) != ESRCH