104 lines
3.5 KiB
C
104 lines
3.5 KiB
C
/****************************************************************************
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* sched/irq/irq_foreach.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <assert.h>
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#include <debug.h>
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#include <nuttx/irq.h>
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#include "irq/irq.h"
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#ifdef CONFIG_SCHED_IRQMONITOR
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/* This is the number of entries in the interrupt vector table */
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#ifdef CONFIG_ARCH_MINIMAL_VECTORTABLE
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# define TAB_SIZE CONFIG_ARCH_NUSER_INTERRUPTS
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#else
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# define TAB_SIZE NR_IRQS
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#endif
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: irq_foreach
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*
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* Description:
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* This function traverses the internal list of interrupts and provides
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* information about each attached interrupt.
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*
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* Some caution may be necessary: If interrupts are disabled then the
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* counts may change during the traversal. If pre-emption is enabled, then
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* the traversed sequence may be widely separated in time.
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*
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* Input Parameters:
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* callback - This function will be called for each attached interrupt
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* along with the IRQ number, an instance of struct irq_info_s,
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* and the caller provided argument
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* args - This is an opaque argument provided with each call to the
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* callback function.
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*
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* Returned Value:
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* Zero (OK) is returned after callback has been invoked for all of
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* the attached interrupts. The callback function may terminate the
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* traversal at any time by returning a non-zero value. In that case,
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* irq_foreach will return that non-zero value.
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*
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****************************************************************************/
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int irq_foreach(irq_foreach_t callback, FAR void *arg)
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{
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int irq;
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int ret;
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DEBUGASSERT(callback != NULL);
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/* Visit each interrupt in the interrupt table */
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for (irq = 0; irq < TAB_SIZE; irq++)
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{
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if (g_irqvector[irq].handler != NULL &&
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g_irqvector[irq].handler != irq_unexpected_isr)
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{
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ret = callback(irq, &g_irqvector[irq], arg);
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if (ret != 0)
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{
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return ret;
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}
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}
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}
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return OK;
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}
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#endif /* CONFIG_SCHED_IRQMONITOR */
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