mirror of
https://github.com/moparisthebest/curl
synced 2024-11-16 14:35:03 -05:00
6193770ee1
This checks the new behavior of Curl_splaygetbest, so that the smallest node not larger than the key is removed, and FIFO behavior is kept even when there are multiple nodes with the same key. Closes #1358
143 lines
3.5 KiB
C
143 lines
3.5 KiB
C
/***************************************************************************
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* _ _ ____ _
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* Project ___| | | | _ \| |
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* / __| | | | |_) | |
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* | (__| |_| | _ <| |___
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* \___|\___/|_| \_\_____|
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*
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* Copyright (C) 1998 - 2011, Daniel Stenberg, <daniel@haxx.se>, et al.
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*
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* This software is licensed as described in the file COPYING, which
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* you should have received as part of this distribution. The terms
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* are also available at https://curl.haxx.se/docs/copyright.html.
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*
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* You may opt to use, copy, modify, merge, publish, distribute and/or sell
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* copies of the Software, and permit persons to whom the Software is
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* furnished to do so, under the terms of the COPYING file.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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***************************************************************************/
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#include "curlcheck.h"
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#include "splay.h"
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static CURLcode unit_setup(void)
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{
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return CURLE_OK;
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}
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static void unit_stop(void)
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{
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}
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static void splayprint(struct Curl_tree * t, int d, char output)
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{
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struct Curl_tree *node;
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int i;
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int count;
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if(t == NULL)
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return;
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splayprint(t->larger, d+1, output);
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for(i=0; i<d; i++)
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if(output)
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printf(" ");
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if(output) {
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printf("%ld.%ld[%d]", (long)t->key.tv_sec,
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(long)t->key.tv_usec, i);
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}
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for(count=0, node = t->samen; node != t; node = node->samen, count++)
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;
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if(output) {
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if(count)
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printf(" [%d more]\n", count);
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else
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printf("\n");
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}
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splayprint(t->smaller, d+1, output);
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}
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UNITTEST_START
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/* number of nodes to add to the splay tree */
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#define NUM_NODES 50
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struct Curl_tree *root, *removed;
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struct Curl_tree nodes[NUM_NODES*3];
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int rc;
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int i, j;
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struct timeval tv_now = {0, 0};
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root = NULL; /* the empty tree */
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/* add nodes */
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for(i = 0; i < NUM_NODES; i++) {
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struct timeval key;
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key.tv_sec = 0;
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key.tv_usec = (541*i)%1023;
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nodes[i].payload = (void *)key.tv_usec; /* for simplicity */
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root = Curl_splayinsert(key, root, &nodes[i]);
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}
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puts("Result:");
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splayprint(root, 0, 1);
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for(i = 0; i < NUM_NODES; i++) {
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int rem = (i+7)%NUM_NODES;
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printf("Tree look:\n");
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splayprint(root, 0, 1);
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printf("remove pointer %d, payload %ld\n", rem,
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(long)(nodes[rem].payload));
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rc = Curl_splayremovebyaddr(root, &nodes[rem], &root);
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if(rc) {
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/* failed! */
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printf("remove %d failed!\n", rem);
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fail("remove");
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}
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}
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fail_unless(root == NULL, "tree not empty after removing all nodes");
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/* rebuild tree */
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for(i = 0; i < NUM_NODES; i++) {
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struct timeval key;
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key.tv_sec = 0;
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key.tv_usec = (541*i)%1023;
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/* add some nodes with the same key */
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for(j = 0; j <= i % 3; j++) {
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nodes[i*3+j].payload = (void *)(key.tv_usec*10 + j); /* for simplicity */
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root = Curl_splayinsert(key, root, &nodes[i*3+j]);
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}
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}
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removed = NULL;
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for(i = 0; i <= 1100; i+= 100) {
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printf("Removing nodes not larger than %d\n", i);
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tv_now.tv_usec = i;
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root = Curl_splaygetbest(tv_now, root, &removed);
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while(removed != NULL) {
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printf("removed payload %ld[%ld]\n", (long)(removed->payload) / 10,
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(long)(removed->payload) % 10);
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root = Curl_splaygetbest(tv_now, root, &removed);
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}
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}
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fail_unless(root == NULL, "tree not empty when it should be");
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UNITTEST_STOP
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