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git://git.code.sf.net/p/openocd/code
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382148e4dd
With the old checkpatch we cannot use the correct format for the SPDX tags in the file .c, in fact the C99 comments are not allowed and we had to use the block comment. With the new checkpatch, let's switch to the correct SPDX format. Change created automatically through the command: sed -i \ 's,^/\* *\(SPDX-License-Identifier: .*[^ ]\) *\*/$,// \1,' \ $(find src/ contrib/ -name \*.c) Change-Id: I6da16506baa7af718947562505dd49606d124171 Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com> Reviewed-on: https://review.openocd.org/c/openocd/+/7153 Tested-by: jenkins
75 lines
1.4 KiB
C
75 lines
1.4 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/* Copyright (C) 2021 by Andreas Fritiofson <andreas.fritiofson@gmail.com> */
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/*
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* Simple example of using a circular doubly linked list through list.h
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*
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* gcc -I ../src/ list_example.c -o list_example
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*/
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#include <stdint.h>
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#include <stdbool.h>
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#include <assert.h>
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#include <helper/list.h>
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static LIST_HEAD(threads);
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struct thread {
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int id;
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uint64_t tcb_address;
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struct list_head lh;
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};
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void insert(struct thread *t)
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{
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list_add_tail(&t->lh, &threads);
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}
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void remove(struct thread *t)
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{
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list_del(&t->lh);
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}
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struct thread *lookup_id(int id)
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{
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struct thread *t;
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list_for_each_entry(t, &threads, lh) {
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if (t->id == id)
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return t;
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}
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return NULL;
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}
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struct thread *lookup_tcb(uint64_t addr)
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{
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struct thread *t;
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list_for_each_entry(t, &threads, lh) {
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if (t->tcb_address == addr)
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return t;
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}
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return NULL;
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}
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int main(void)
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{
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struct thread t1 = { .id = 1, .tcb_address = 111111111 };
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struct thread t2 = { .id = 2, .tcb_address = 222222222 };
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struct thread t3 = { .id = 3, .tcb_address = 333333333 };
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insert(&t1);
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insert(&t2);
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assert(lookup_id(1) == &t1);
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assert(lookup_tcb(111111111) == &t1);
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assert(lookup_id(2) == &t2);
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assert(lookup_id(42) == NULL);
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remove(&t1);
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assert(lookup_id(1) == NULL);
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insert(&t3);
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remove(&t2);
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assert(lookup_id(3) == &t3);
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assert(lookup_tcb(333333333) == &t3);
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assert(lookup_id(2) == NULL);
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remove(&t3);
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assert(list_empty(&threads));
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}
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