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7.2.38 _gfortran_caf_form_team — Team creation function ¶

Synopsis:

void _gfortran_caf_form_team (int team_id, caf_team_t *team, int *new_index, int *stat, char *errmsg, size_t errmsg_len)

Description:

Create a team. All images giving the same team_id in a call to FORM TEAM will form a new team addressable by the opaque handle team which is of type team_type from the intrinsic module ISO_FORTRAN_ENV. In the team the image gets the image index given by new_index if present. If new_index is absent, then an implementation specific index is assigned.

Arguments:

team_id	intent(in) A unique id for each team to form. Images giving the same team_id in a call to FORM TEAM belong to the same team.
team	intent(out) The opaque pointer to the newly formed team
new_index	intent(in) If non-null gives the unique index of this image in the newly formed team. When no new_index is given, the caf-library is free to choose a unique index.
stat	intent(out) Stores the status STAT= and may be NULL.
errmsg	intent(out) When an error occurs, this is set to an error message; may be NULL.
errmsg_len	intent(in) the buffer size of errmsg

Notes:

The id given in team_id has to be unique in all subsequent calls to FORM TEAM on the same image. That id is the same used in TEAM_NUMBER= of coarray indexes, which motivates the uniqueness.

The index given in new_index needs to be unique among all members of team to create. Failing uniqueness may lead to misbehaviour, which depends on the caf-library’s implementation. The library is free to implement checks for this, which imposes overhead and therefore may be avoided.