_gfortran_caf_sync_memory (The GNU Fortran Compiler)

#### 7.2.25 `_gfortran_caf_sync_memory` — Wait for completion of segment-memory operations ¶

Synopsis:

  `void _gfortran_caf_sync_memory (int *stat, char *errmsg, size_t errmsg_len)`

Description:

  Acts as optimization barrier between different segments. It also ensures that all pending memory operations of this image have been completed.

Arguments:

  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:

  A simple implementation could be `__asm__ __volatile__ ("":::"memory")` to prevent code movements.