ok, these are the test build I've used so far
This commit is contained in:
Daniel Stenberg
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59b6cb9e91
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1eb4b85d72
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#
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# Build a little app for the Hiper project
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# During dev at least, we use a static libcurl.
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#
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LDFLAGS = -lcrypt -lidn -lssl -lcrypto -ldl -lz -lresolv -L../ares/.libs -lcares
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LIBCURL = -L../lib/.libs/ -lcurl
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CFLAGS = -I../include -g -DHAVE_CURL_MULTI_SOCKET
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hiper: hiper.o $(LIBCURL)
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$(CC) -o $@ $< $(LIBCURL) $(LDFLAGS)
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hiper.o: hiper.c
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$(CC) $(CFLAGS) -c $<
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clean:
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rm hiper.o hiper
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$(LIBCURL):
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(cd ../lib && make)
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@ -0,0 +1,377 @@
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/*****************************************************************************
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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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* $Id$
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*
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* Connect to N sites simultanouesly and download data.
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*
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*/
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#include <stdio.h>
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#include <string.h>
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#include <sys/time.h>
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#include <time.h>
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#include <unistd.h>
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#include <sys/poll.h>
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#include <curl/curl.h>
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/* The number of simultanoues connections/transfers we do */
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#define NCONNECTIONS 2000
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/* The least number of connections we are interested in, so when we go below
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this amount we can just as well stop */
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#define NMARGIN 50
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/* Number of loops (seconds) we allow the total download amount and alive
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connections to remain the same until we bail out. Set this slightly higher
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when using asynch supported libcurl. */
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#define IDLE_TIME 10
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struct globalinfo {
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size_t dlcounter;
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};
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struct connection {
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CURL *e;
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int id; /* just a counter for easy browsing */
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char url[80];
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size_t dlcounter;
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struct globalinfo *global;
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};
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static size_t
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writecallback(void *ptr, size_t size, size_t nmemb, void *data)
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{
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size_t realsize = size * nmemb;
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struct connection *c = (struct connection *)data;
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c->dlcounter += realsize;
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c->global->dlcounter += realsize;
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#if 0
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printf("%02d: %d, total %d\n",
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c->id, c->dlcounter, c->global->dlcounter);
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#endif
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return realsize;
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}
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/* return the diff between two timevals, in us */
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static long tvdiff(struct timeval *newer, struct timeval *older)
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{
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return (newer->tv_sec-older->tv_sec)*1000000+
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(newer->tv_usec-older->tv_usec);
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}
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/* store the start time of the program in this variable */
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static struct timeval timer;
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static void timer_start(void)
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{
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/* capture the time of the start moment */
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gettimeofday(&timer, NULL);
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}
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static struct timeval cont; /* at this moment we continued */
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int still_running; /* keep number of running handles */
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struct conncount {
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long time_us;
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long laps;
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long maxtime;
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};
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struct conncount timecount[NCONNECTIONS+1];
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static struct timeval timerpause;
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static void timer_pause(void)
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{
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/* capture the time of the pause moment */
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gettimeofday(&timerpause, NULL);
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/* If we have a previous continue (all times except the first), we can now
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store the time for a whole "lap" */
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if(cont.tv_sec) {
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long lap;
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lap = tvdiff(&timerpause, &cont);
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timecount[still_running].time_us += lap;
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timecount[still_running].laps++; /* number of times added */
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if(lap > timecount[still_running].maxtime) {
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timecount[still_running].maxtime = lap;
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}
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}
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}
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static long paused; /* amount of us we have been pausing */
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static void timer_continue(void)
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{
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/* Capture the time of the restored operation moment, now calculate how long
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time we were paused and added that to the 'paused' variable.
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*/
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gettimeofday(&cont, NULL);
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paused += tvdiff(&cont, &timerpause);
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}
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static long total; /* amount of us from start to stop */
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static void timer_stop(void)
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{
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struct timeval stop;
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/* Capture the time of the operation stopped moment, now calculate how long
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time we were running and how much of that pausing.
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*/
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gettimeofday(&stop, NULL);
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total = tvdiff(&stop, &timer);
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}
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struct globalinfo info;
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struct connection conns[NCONNECTIONS];
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long selects;
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long selectsalive;
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long timeouts;
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long perform;
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long performalive;
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long performselect;
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long topselect;
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static void report(void)
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{
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int i;
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long active = total - paused;
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long numdl = 0;
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for(i=0; i < NCONNECTIONS; i++) {
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if(conns[i].dlcounter)
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numdl++;
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}
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printf("Summary from %d simultanoues transfers:\n",
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NCONNECTIONS);
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printf("Total time %ldus - Paused %ldus = Active %ldus =\n Active/total"
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" %ldus\n",
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total, paused, active, active/NCONNECTIONS);
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printf(" Active/(connections that delivered data) = %ldus\n",
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active/numdl);
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printf("%d out of %d connections provided data\n", numdl, NCONNECTIONS);
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printf("%d calls to curl_multi_perform(), average %d alive. "
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"Average time: %dus\n",
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perform, performalive/perform, active/perform);
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printf("%d calls to select(), average %d alive\n",
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selects, selectsalive/selects);
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printf(" Average number of readable connections per select() return: %d\n",
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performselect/selects);
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printf(" Max number of readable connections for a single select() "
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"return: %d\n",
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topselect);
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printf("%ld select() timeouts\n", timeouts);
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for(i=1; i< NCONNECTIONS; i++) {
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if(timecount[i].laps) {
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printf("Time %d connections, average %ld max %ld (%ld laps) average/conn: %ld\n",
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i,
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timecount[i].time_us/timecount[i].laps,
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timecount[i].maxtime,
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timecount[i].laps,
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(timecount[i].time_us/timecount[i].laps)/i );
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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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CURLM *multi_handle;
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CURLMsg *msg;
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CURLcode code = CURLE_OK;
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CURLMcode mcode = CURLM_OK;
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int rc;
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int i;
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FILE *urls;
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int startindex=0;
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char buffer[256];
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int prevalive=-1;
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int prevsamecounter=0;
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int prevtotal = -1;
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memset(&info, 0, sizeof(struct globalinfo));
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if(argc < 2) {
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printf("Usage: hiper [file] [start index]\n");
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return 1;
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}
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urls = fopen(argv[1], "r");
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if(!urls)
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/* failed to open list of urls */
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return 1;
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if(argc > 2)
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startindex = atoi(argv[2]);
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if(startindex) {
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/* Pass this many lines before we start using URLs from the file. On
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repeated invokes, try using different indexes to avoid torturing the
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same servers. */
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while(startindex--) {
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if(!fgets(buffer, sizeof(buffer), urls))
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break;
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}
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}
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/* init the multi stack */
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multi_handle = curl_multi_init();
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for(i=0; i< NCONNECTIONS; i++) {
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CURL *e;
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char *nl;
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memset(&conns[i], 0, sizeof(struct connection));
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/* read a line from the file of URLs */
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if(!fgets(conns[i].url, sizeof(conns[i].url), urls))
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/* failed to read a line */
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break;
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/* strip off trailing newlines */
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nl = strchr(conns[i].url, '\n');
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if(nl)
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*nl=0; /* cut */
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printf("%d: Add URL %s\n", i, conns[i].url);
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e = curl_easy_init();
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conns[i].e = e;
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conns[i].id = i;
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conns[i].global = &info;
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curl_easy_setopt(e, CURLOPT_URL, conns[i].url);
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curl_easy_setopt(e, CURLOPT_WRITEFUNCTION, writecallback);
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curl_easy_setopt(e, CURLOPT_WRITEDATA, &conns[i]);
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#if 0
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curl_easy_setopt(e, CURLOPT_VERBOSE, 1);
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curl_easy_setopt(e, CURLOPT_ERRORBUFFER, errorbuffer);
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#endif
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/* add the easy to the multi */
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curl_multi_add_handle(multi_handle, e);
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}
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/* we start some action by calling perform right away */
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while(CURLM_CALL_MULTI_PERFORM ==
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curl_multi_perform(multi_handle, &still_running));
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printf("Starting timer!\n");
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timer_start();
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while(still_running) {
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struct timeval timeout;
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int rc; /* select() return code */
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fd_set fdread;
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fd_set fdwrite;
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fd_set fdexcep;
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int maxfd;
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FD_ZERO(&fdread);
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FD_ZERO(&fdwrite);
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FD_ZERO(&fdexcep);
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/* set a suitable timeout to play around with */
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timeout.tv_sec = 0;
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timeout.tv_usec = 50000;
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/* get file descriptors from the transfers */
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curl_multi_fdset(multi_handle, &fdread, &fdwrite, &fdexcep, &maxfd);
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timer_pause();
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selects++;
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selectsalive += still_running;
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rc = select(maxfd+1, &fdread, &fdwrite, &fdexcep, &timeout);
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/* Output this here to make it outside the timer */
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printf("Running: %d (%d bytes)\n", still_running, info.dlcounter);
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timer_continue();
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switch(rc) {
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case -1:
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/* select error */
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break;
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case 0:
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timeouts++;
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default:
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/* timeout or readable/writable sockets */
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do {
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perform++;
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performalive += still_running;
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}
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while(CURLM_CALL_MULTI_PERFORM ==
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curl_multi_perform(multi_handle, &still_running));
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performselect += rc;
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if(rc > topselect)
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topselect = rc;
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break;
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}
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if(still_running < NMARGIN) {
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printf("Only %d connections left alive, existing\n",
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still_running);
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break;
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}
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if((prevalive == still_running) && (prevtotal == info.dlcounter) &&
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info.dlcounter) {
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/* The same amount of still alive transfers as last lap, increase
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counter. Only do this if _anything_ has been downloaded since it
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tends to come here during the initial name lookup phase when using
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asynch DNS libcurl otherwise.
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*/
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prevsamecounter++;
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if(prevsamecounter >= IDLE_TIME) {
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/* for the sake of being efficient, we stop the operation when
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IDLE_TIME has passed without any bytes transfered */
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printf("Idle time (%d secs) reached (with %d still claimed alive),"
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" exiting\n",
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IDLE_TIME, still_running);
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break;
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}
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}
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else {
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prevsamecounter=0;
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}
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prevalive = still_running;
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prevtotal = info.dlcounter;
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}
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timer_stop();
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curl_multi_cleanup(multi_handle);
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/* cleanup all the easy handles */
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for(i=0; i< NCONNECTIONS; i++)
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curl_easy_cleanup(conns[i].e);
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report();
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return code;
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}
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