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2b71810cb3
The current "ADD" vs "ADDQ" is confusing because when thinking in terms
of appending at the end of a list, "ADD" naturally comes to mind, but
here it does the opposite, it inserts. Several times already it's been
incorrectly used where ADDQ was expected, the latest of which was a
fortunate accident explained in 6fa922562 ("CLEANUP: stream: explain
why we queue the stream at the head of the server list").
Let's use more explicit (but slightly longer) names now:
LIST_ADD -> LIST_INSERT
LIST_ADDQ -> LIST_APPEND
LIST_ADDED -> LIST_INLIST
LIST_DEL -> LIST_DELETE
The same is true for MT_LISTs, including their "TRY" variant.
LIST_DEL_INIT keeps its short name to encourage to use it instead of the
lazier LIST_DELETE which is often less safe.
The change is large (~674 non-comment entries) but is mechanical enough
to remain safe. No permutation was performed, so any out-of-tree code
can easily map older names to new ones.
The list doc was updated.
99 lines
1.9 KiB
C
99 lines
1.9 KiB
C
#include <pthread.h>
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#include <stdio.h>
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#include <stdlib.h>
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#define USE_THREAD
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#include <haproxy/list.h>
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/* Stress test the mt_lists.
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* Compile from the haproxy directory with :
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* cc -I../../include test-list.c -pthread -O2 -o test-list
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* The only argument it takes is the number of threads to be used.
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* ./test-list 4
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*/
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struct mt_list pouet_list = MT_LIST_HEAD_INIT(pouet_list);
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#define MAX_ACTION 5000000
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__thread unsigned int tid;
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struct pouet_lol {
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struct mt_list list_elt;
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};
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void *thread(void *pouet)
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{
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struct pouet_lol *lol;
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struct mt_list *elt1, elt2;
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tid = (uintptr_t)pouet;
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int i = 0;
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for (int i = 0; i < MAX_ACTION; i++) {
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struct pouet_lol *lol;
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struct mt_list *elt1, elt2;
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switch (random() % 4) {
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case 0:
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lol = malloc(sizeof(*lol));
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MT_LIST_INIT(&lol->list_elt);
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MT_LIST_TRY_INSERT(&pouet_list, &lol->list_elt);
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break;
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case 1:
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lol = malloc(sizeof(*lol));
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MT_LIST_INIT(&lol->list_elt);
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MT_LIST_TRY_APPEND(&pouet_list, &lol->list_elt);
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break;
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case 2:
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lol = MT_LIST_POP(&pouet_list, struct pouet_lol *, list_elt);
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if (lol)
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free(lol);
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break;
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case 3:
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mt_list_for_each_entry_safe(lol, &pouet_list, list_elt, elt1, elt2)
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{
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if (random() % 2) {
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MT_LIST_DELETE_SAFE(elt1);
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free(lol);
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}
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if (random() % 2) {
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break;
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}
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}
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break;
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default:
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break;
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}
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}
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}
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int main(int argc, char *argv[])
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{
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int nb;
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pthread_t *pth;
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srandom(time(NULL));
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if (argc != 2) {
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printf("Usage: %s <nb_threads>\n", argv[0]);
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exit(1);
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}
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nb = atoi(argv[1]);
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#if 0
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if (nb < 2) {
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printf("Need at least 2 threads.\n");
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exit(1);
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}
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#endif
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pth = malloc(nb * sizeof(*pth));
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if (pth == NULL) {
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printf("Shot failed to connect.\n");
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exit(1);
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}
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for (int i = 0; i < nb; i++) {
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pthread_create(&pth[i], NULL, thread, (void *)(uintptr_t)i);
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}
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for (int i = 0; i < nb; i++)
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pthread_join(pth[i], NULL);
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return 0;
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}
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