85 lines
1.7 KiB
C
85 lines
1.7 KiB
C
/*
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* Copyright (c) 2019 Peter Bigot Consulting, LLC
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* Copyright (c) 2020 Nordic Semiconductor ASA
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#include <kernel.h>
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#include <sys/notify.h>
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int sys_notify_validate(struct sys_notify *notify)
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{
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int rv = 0;
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if (notify == NULL) {
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return -EINVAL;
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}
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/* Validate configuration based on mode */
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switch (sys_notify_get_method(notify)) {
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case SYS_NOTIFY_METHOD_SPINWAIT:
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break;
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case SYS_NOTIFY_METHOD_CALLBACK:
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if (notify->method.callback == NULL) {
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rv = -EINVAL;
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}
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break;
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#ifdef CONFIG_POLL
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case SYS_NOTIFY_METHOD_SIGNAL:
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if (notify->method.signal == NULL) {
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rv = -EINVAL;
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}
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break;
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#endif /* CONFIG_POLL */
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default:
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rv = -EINVAL;
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break;
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}
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/* Clear the result here instead of in all callers. */
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if (rv == 0) {
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notify->result = 0;
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}
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return rv;
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}
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sys_notify_generic_callback sys_notify_finalize(struct sys_notify *notify,
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int res)
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{
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struct k_poll_signal *sig = NULL;
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sys_notify_generic_callback rv = NULL;
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uint32_t method = sys_notify_get_method(notify);
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/* Store the result and capture secondary notification
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* information.
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*/
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notify->result = res;
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switch (method) {
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case SYS_NOTIFY_METHOD_SPINWAIT:
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break;
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case SYS_NOTIFY_METHOD_CALLBACK:
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rv = notify->method.callback;
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break;
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case SYS_NOTIFY_METHOD_SIGNAL:
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sig = notify->method.signal;
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break;
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default:
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__ASSERT_NO_MSG(false);
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}
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/* Mark completion by clearing the flags field to the
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* completed state, releasing any spin-waiters, then complete
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* secondary notification.
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*/
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compiler_barrier();
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notify->flags = SYS_NOTIFY_METHOD_COMPLETED;
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if (IS_ENABLED(CONFIG_POLL) && (sig != NULL)) {
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k_poll_signal_raise(sig, res);
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}
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return rv;
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}
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