Critical sections

Functions
static int_master_status_t	critical_enter ()
	Enter a critical section.
static void	critical_exit (int_master_status_t status)
	Exit a critical section and restore the master interrupt.

Detailed Description

Platform-independent functions for critical section entry and exit

Function Documentation

critical_enter()

static int_master_status_t critical_enter ( )

inlinestatic

Enter a critical section.

Returns

The status of the master interrupt before entering the critical

This function will return the status of the master interrupt as it was before entering the critical section.

The semantics of the return value are entirely platform-specific. The calling code should not try to determine whether the master interrupt was previously enabled/disabled by interpreting the return value of this function. The return value should only be used as an argument to critical_exit().

Definition at line 65 of file critical.h.

References int_master_read_and_disable().

Referenced by atomic_generic_cas_uint8(), lpm_drop(), mutex_generic_try_lock(), mutex_generic_unlock(), tsch_get_network_uptime_ticks(), and tsch_slot_operation_sync().

critical_exit()

static void critical_exit ( int_master_status_t status )

inlinestatic

Exit a critical section and restore the master interrupt.

Parameters

status

The new status of the master interrupt

The semantics of status are platform-dependent. Normally, the argument provided to this function will be a value previously retrieved through a call to critical_enter().

Definition at line 81 of file critical.h.

References int_master_status_set().

Referenced by atomic_generic_cas_uint8(), lpm_drop(), mutex_generic_try_lock(), mutex_generic_unlock(), tsch_get_network_uptime_ticks(), and tsch_slot_operation_sync().