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bsps: Use interrupt lock for interrupt server

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This commit is contained in:
Sebastian Huber
2015-03-05 14:54:09 +01:00
parent f3a57820f7
commit 5fca9ef5a2
1 changed files with 23 additions and 10 deletions
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33
c/src/lib/libbsp/shared/src/irq-server.c
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@@ -7,12 +7,13 @@
*/
/*
* Copyright (c) 2009, 2010
* embedded brains GmbH
* Obere Lagerstr. 30
* D-82178 Puchheim
* Germany
* <rtems@embedded-brains.de>
* Copyright (c) 2009, 2015 embedded brains GmbH. All rights reserved.
*
* embedded brains GmbH
* Dornierstr. 4
* 82178 Puchheim
* Germany
* <rtems@embedded-brains.de>
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
@@ -28,6 +29,12 @@
#define BSP_INTERRUPT_EVENT RTEMS_EVENT_13
RTEMS_INTERRUPT_LOCK_DEFINE(
static,
bsp_interrupt_server_lock,
"Interrupt Server"
)
typedef struct bsp_interrupt_server_entry {
rtems_chain_node node;
rtems_vector_number vector;
@@ -57,7 +64,11 @@ static void bsp_interrupt_server_trigger(void *arg)
bsp_interrupt_vector_disable(e->vector);
if (e->node.next == NULL) {
rtems_chain_append(&bsp_interrupt_server_chain, &e->node);
rtems_interrupt_lock_context lock_context;
rtems_interrupt_lock_acquire(&bsp_interrupt_server_lock, &lock_context);
rtems_chain_append_unprotected(&bsp_interrupt_server_chain, &e->node);
rtems_interrupt_lock_release(&bsp_interrupt_server_lock, &lock_context);
} else {
++bsp_interrupt_server_errors;
}
@@ -67,16 +78,18 @@ static void bsp_interrupt_server_trigger(void *arg)
static bsp_interrupt_server_entry *bsp_interrupt_server_get_entry(void)
{
rtems_interrupt_level level;
rtems_interrupt_lock_context lock_context;
bsp_interrupt_server_entry *e;
rtems_interrupt_disable(level);
rtems_interrupt_lock_acquire(&bsp_interrupt_server_lock, &lock_context);
e = (bsp_interrupt_server_entry *)
rtems_chain_get_unprotected(&bsp_interrupt_server_chain);
if (e != NULL) {
e->node.next = NULL;
}
rtems_interrupt_enable(level);
rtems_interrupt_lock_release(&bsp_interrupt_server_lock, &lock_context);
return e;
}