CBL_MONITOR_OPEN_INTRA

Creates a monitor synchronization object for thread synchronization within one process.

Note: This routine is not supported in JVM COBOL.

Syntax:

call "CBL_MONITOR_OPEN_INTRA" using by reference monitor-handle
                              by value           open-flags

	Using call prototype (see Key)	Picture
`monitor-handle`	cblt-pointer	usage pointer.
`open-flags`	cblt-os-flags	pic x(4) comp-5 or pic x(8) comp-5 (64-bit native programs only)

Using call prototype (see Key)

Picture

monitor-handle

cblt-pointer

usage pointer.

open-flags

cblt-os-flags

pic x(4) comp-5

pic x(8) comp-5 (64-bit native programs only)

open-flags

A value indicating the priority algorithm used to grant locks:

Bit 0

0	Readers and writers have interleaved priority; that is, if a write request is issued, any further read requests will block until the first write request is granted and finished
1	Read requests always have priority, possibly leading to writer starvation.

Remaining bits

Reserved and should be set to zero.

monitor-handle: The monitor handle.
return-code: A value of 0 indicates that the call was successful. Any other value indicates an error. See RETURN-CODE Values For Synchronization Routines.

If open-flags bit 0 is set to 0, and nested read locks are requested, then single thread deadlock is possible.