forked from Imagelibrary/rtems
03e8928753
The holder field is enough to determine if a mutex is locked or not. This leads also to better error status codes in case a rtems_semaphore_release() is done for a mutex without having the ownership.
90 lines
2.4 KiB
C
90 lines
2.4 KiB
C
/*
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* RTEMS Monitor semaphore support
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <rtems.h>
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#include "monitor.h"
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#include <rtems/rtems/attrimpl.h>
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#include <stdio.h>
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#include <string.h> /* memcpy() */
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void
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rtems_monitor_sema_canonical(
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rtems_monitor_sema_t *canonical_sema,
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const void *sema_void
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)
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{
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const Semaphore_Control *rtems_sema = (const Semaphore_Control *) sema_void;
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canonical_sema->attribute = rtems_sema->attribute_set;
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canonical_sema->priority_ceiling =
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rtems_sema->Core_control.mutex.Attributes.priority_ceiling;
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canonical_sema->holder_id = 0;
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if (_Attributes_Is_counting_semaphore(canonical_sema->attribute)) {
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/* we have a counting semaphore */
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canonical_sema->cur_count =
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rtems_sema->Core_control.semaphore.count;
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canonical_sema->max_count =
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rtems_sema->Core_control.semaphore.Attributes.maximum_count;
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}
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else {
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/* we have a binary semaphore (mutex) */
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Thread_Control *holder = rtems_sema->Core_control.mutex.holder;
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if (holder != NULL) {
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canonical_sema->holder_id = holder->Object.id;
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canonical_sema->cur_count = 0;
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} else {
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canonical_sema->cur_count = 1;
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}
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canonical_sema->max_count = 1; /* mutex is either 0 or 1 */
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}
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}
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void
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rtems_monitor_sema_dump_header(
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bool verbose __attribute__((unused))
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)
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{
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printf("\
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ID NAME ATTR PRICEIL CURR_CNT HOLDID \n");
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/*23456789 123456789 123456789 123456789 123456789 123456789 123456789 1234
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1 2 3 4 5 6 7 */
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rtems_monitor_separator();
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}
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/*
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*/
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void
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rtems_monitor_sema_dump(
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rtems_monitor_sema_t *monitor_sema,
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bool verbose __attribute__((unused))
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)
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{
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int length = 0;
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length += rtems_monitor_dump_id(monitor_sema->id);
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length += rtems_monitor_pad(11, length);
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length += rtems_monitor_dump_name(monitor_sema->id);
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length += rtems_monitor_pad(18, length);
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length += rtems_monitor_dump_attributes(monitor_sema->attribute);
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length += rtems_monitor_pad(30, length);
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length += rtems_monitor_dump_priority(monitor_sema->priority_ceiling);
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length += rtems_monitor_pad(38, length);
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length += rtems_monitor_dump_decimal(monitor_sema->cur_count);
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length += rtems_monitor_pad(47, length);
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length += rtems_monitor_dump_id(monitor_sema->holder_id);
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printf("\n");
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}
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