04-03-2014
After you have modeled your dependencies using the lock modes developed by Distributed Lock Manager (see Wikipedia) you could use FLOM (Free LOck Manager) to achieve your result.
With FLOM you are able to execute a command specifying an abstract resource and a lock mode for every command:
flom --resource=XX --lock-mode=PR -- mycommand1
flom --resource=XX --lock-mode=EX -- mycommand2
and so on.
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LEARN ABOUT OSF1
simple_lock_try
simple_lock_try(9r) simple_lock_try(9r)
NAME
simple_lock_try - General: Tries to assert a simple lock
SYNOPSIS
#include <kern/lock.h>
boolean_t simple_lock_try(
simple_lock_t slock_ptr );
ARGUMENTS
Specifies a pointer to a simple lock structure. You can declare this simple lock structure by using the decl_simple_lock_data routine.
DESCRIPTION
The simple_lock_try routine tries to assert a lock with read and write access for the resource associated with the specified simple lock.
The main difference between this routine and simple_lock is that simple_lock_try returns immediately if the resource is already locked,
while simple_lock spins until the lock has been obtained. Thus, call simple_lock_try when you need a simple lock but the code cannot spin
until the lock is obtained.
To release a simple lock successfully asserted by simple_lock_try, call the simple_unlock routine.
RETURN VALUES
The simple_lock_try routine returns one of the following values: The simple_lock_try routine successfully asserted the simple lock. The
simple_lock_try routine failed to assert the simple lock.
FILES
SEE ALSO
Routines: decl_simple_lock_data(9r), simple_lock(9r), simple_lock_init(9r), simple_lock_terminate(9r), simple_unlock(9r)
Data Structures: slock(9s)
simple_lock_try(9r)