omp_set_nest_lock (GNU libgomp)

#### 3.9.6 `omp_set_nest_lock` – Wait for and set nested lock ¶

Description:

  Before setting a nested lock, the lock variable must be initialized by `omp_init_nest_lock`. The calling thread is blocked until the lock is available. If the lock is already held by the current thread, the nesting count for the lock is incremented.

C/C++:

  Prototype: | `void omp_set_nest_lock(omp_nest_lock_t *lock);`

Fortran:

  Interface: | `subroutine omp_set_nest_lock(nvar)`
  | `integer(omp_nest_lock_kind), intent(inout) :: nvar`

See also:

  `omp_init_nest_lock` – Initialize nested lock, `omp_unset_nest_lock` – Unset nested lock

Reference:

  OpenMP specification v4.5, Section 3.3.4.