119 lines
4.3 KiB
C
119 lines
4.3 KiB
C
/****************************************************************************
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* sched/irq/irq_foreach.c
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*
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* Copyright (C) 2018 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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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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