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multi & hiper examples: updates and cleanups

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all multi and hiper examples:

* don't loop curl_multi_perform calls, that was <7.20.0 style, currently
  the exported multi functions will not return CURLM_CALL_MULTI_PERFORM

all hiper examples:
* renamed check_run_count to check_multi_info
* don't  compare current running handle count with previous value, this
  was the wrong way to check for finished requests, simply call
  curl_multi_info_read
* it's also safe to call curl_multi_remove_handle inside the
  curl_multi_info_read loop.

ghiper.c:
* replaced curl_multi_socket (that function is marked as obsolete) calls
  with curl_multi_socket_action calls (as in hiperfifo.c and
  evhiperfifo.c)

ghiper.c and evhiperfifo.c:
* be smart as hiperfifo.c, don't do uncessary curl_multi_* calls in
  new_conn and main
This commit is contained in:
Dirk Manske
2010-09-30 11:33:33 +02:00
committed by Daniel Stenberg
parent 67c83eb9eb
commit 5fb4279ec7
10 changed files with 113 additions and 202 deletions
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101
docs/examples/ghiper.c
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@@ -58,10 +58,7 @@ callback.
typedef struct _GlobalInfo {
CURLM *multi;
guint timer_event;
int prev_running;
int still_running;
int requested; /* count: curl_easy_init() */
int completed; /* count: curl_easy_cleanup() */
} GlobalInfo;
@@ -95,7 +92,6 @@ static void mcode_or_die(const char *where, CURLMcode code) {
const char *s;
switch (code) {
case CURLM_CALL_MULTI_PERFORM: s="CURLM_CALL_MULTI_PERFORM"; break;
case CURLM_OK: s="CURLM_OK"; break;
case CURLM_BAD_HANDLE: s="CURLM_BAD_HANDLE"; break;
case CURLM_BAD_EASY_HANDLE: s="CURLM_BAD_EASY_HANDLE"; break;
case CURLM_OUT_OF_MEMORY: s="CURLM_OUT_OF_MEMORY"; break;
@@ -113,62 +109,43 @@ static void mcode_or_die(const char *where, CURLMcode code) {
/* Check for completed transfers, and remove their easy handles */
static void check_run_count(GlobalInfo *g)
static void check_multi_info(GlobalInfo *g)
{
if (g->prev_running > g->still_running) {
char *eff_url=NULL;
CURLMsg *msg;
int msgs_left;
ConnInfo *conn=NULL;
CURL*easy;
CURLcode res;
char *eff_url;
CURLMsg *msg;
int msgs_left;
ConnInfo *conn;
CURL *easy;
CURLcode res;
MSG_OUT("REMAINING: %d\n", g->still_running);
/*
I am still uncertain whether it is safe to remove an easy handle
from inside the curl_multi_info_read loop, so here I will search
for completed transfers in the inner "while" loop, and then remove
them in the outer "do-while" loop...
*/
do {
easy=NULL;
while ((msg = curl_multi_info_read(g->multi, &msgs_left))) {
if (msg->msg == CURLMSG_DONE) {
easy=msg->easy_handle;
res=msg->data.result;
break;
}
}
if (easy) {
curl_easy_getinfo(easy, CURLINFO_PRIVATE, &conn);
curl_easy_getinfo(easy, CURLINFO_EFFECTIVE_URL, &eff_url);
MSG_OUT("DONE: %s => (%d) %s\n", eff_url, res, conn->error);
curl_multi_remove_handle(g->multi, easy);
g_free(conn->url);
curl_easy_cleanup(easy);
g_free(conn);
g->completed++;
}
} while ( easy );
MSG_OUT("Requested: %d Completed:%d\n", g->requested, g->completed);
MSG_OUT("REMAINING: %d\n", g->still_running);
while ((msg = curl_multi_info_read(g->multi, &msgs_left))) {
if (msg->msg == CURLMSG_DONE) {
easy = msg->easy_handle;
res = msg->data.result;
curl_easy_getinfo(easy, CURLINFO_PRIVATE, &conn);
curl_easy_getinfo(easy, CURLINFO_EFFECTIVE_URL, &eff_url);
MSG_OUT("DONE: %s => (%d) %s\n", eff_url, res, conn->error);
curl_multi_remove_handle(g->multi, easy);
free(conn->url);
curl_easy_cleanup(easy);
free(conn);
}
}
g->prev_running = g->still_running;
}
/* Called by glib when our timeout expires */
static gboolean timer_cb(gpointer data)
{
GlobalInfo *g = (GlobalInfo *)data;
CURLMcode rc;
do {
rc = curl_multi_socket(g->multi, CURL_SOCKET_TIMEOUT, &g->still_running);
} while (rc == CURLM_CALL_MULTI_PERFORM);
mcode_or_die("timer_cb: curl_multi_socket", rc);
check_run_count(g);
rc = curl_multi_socket_action(g->multi,
CURL_SOCKET_TIMEOUT, 0, &g->still_running);
mcode_or_die("timer_cb: curl_multi_socket_action", rc);
check_multi_info(g);
return FALSE;
}
@@ -198,11 +175,15 @@ static gboolean event_cb(GIOChannel *ch, GIOCondition condition, gpointer data)
GlobalInfo *g = (GlobalInfo*) data;
CURLMcode rc;
int fd=g_io_channel_unix_get_fd(ch);
do {
rc = curl_multi_socket(g->multi, fd, &g->still_running);
} while (rc == CURLM_CALL_MULTI_PERFORM);
mcode_or_die("event_cb: curl_multi_socket", rc);
check_run_count(g);
int action =
(condition & G_IO_IN ? CURL_CSELECT_IN : 0) |
(condition & G_IO_OUT ? CURL_CSELECT_OUT : 0);
rc = curl_multi_socket_action(g->multi, fd, action, &g->still_running);
mcode_or_die("event_cb: curl_multi_socket_action", rc);
check_multi_info(g);
if(g->still_running) {
return TRUE;
} else {
@@ -338,12 +319,9 @@ static void new_conn(char *url, GlobalInfo *g )
MSG_OUT("Adding easy %p to multi %p (%s)\n", conn->easy, g->multi, url);
rc =curl_multi_add_handle(g->multi, conn->easy);
mcode_or_die("new_conn: curl_multi_add_handle", rc);
g->requested++;
do {
rc = curl_multi_socket_all(g->multi, &g->still_running);
} while (CURLM_CALL_MULTI_PERFORM == rc);
mcode_or_die("new_conn: curl_multi_socket_all", rc);
check_run_count(g);
/* note that the add_handle() will set a time-out to trigger very soon so
that the necessary socket_action() call will be called by this app */
}
@@ -451,9 +429,10 @@ int main(int argc, char **argv)
curl_multi_setopt(g->multi, CURLMOPT_SOCKETDATA, g);
curl_multi_setopt(g->multi, CURLMOPT_TIMERFUNCTION, update_timeout_cb);
curl_multi_setopt(g->multi, CURLMOPT_TIMERDATA, g);
do {
rc = curl_multi_socket_all(g->multi, &g->still_running);
} while (CURLM_CALL_MULTI_PERFORM == rc);
/* we don't call any curl_multi_socket*() function yet as we have no handles
added! */
g_main_loop_run(gmain);
curl_multi_cleanup(g->multi);
return 0;