object

process

Portable process handling predicates.

Availability:

logtalk_load(process(loader))

Author: Paulo Moura

Version: 2:0:0

Date: 2026-06-30

Compilation flags:

static, context_switching_calls

Dependencies:

(none)

Remarks:

• Supported backend Prolog systems: ECLiPSe, GNU Prolog, SICStus Prolog, SWI-Prolog, Trealla Prolog, and XVM.

• Option type/1 limitation: This option is ignored on ECLiPSe, GNU Prolog, Trealla Prolog, and XVM.

Inherited public predicates:

(none)

Public predicates

create/3

Creates a new process from the given executable and list of arguments. Supported options are process(Pid), stdin(Stream), stdout(Stream), stderr(Stream), and type(Type).

Compilation flags:

static

Template:

create(Executable,Arguments,Options)

Mode and number of proofs:

create(+atom,+list(atom),+list(compound)) - zero_or_one

---

wait/2

Waits for a process to terminate and retrieves its exit status. The value of Status depends on the backend. For a successfully terminated process, Status is either 0 or exit(0).

Compilation flags:

static

Template:

wait(Process,Status)

Mode and number of proofs:

wait(+process_or_pid,-integer_or_compound) - one

---

kill/2

Kills the given process with the specified signal (an integer or one of the following atoms: sighup, sigint, sigkill, or sigterm).

Compilation flags:

static

Template:

kill(Process,Signal)

Mode and number of proofs:

kill(+process_or_pid,+atom_or_integer) - zero_or_one

---

kill/1

Kills the given process using the default signal (sigkill).

Compilation flags:

static

Template:

kill(Process)

Mode and number of proofs:

kill(+process_or_pid) - zero_or_one

---

Protected predicates

(none)

Private predicates

(none)

Operators

(none)

See also

os