From 629d2e34508838069db83e1082ce9e7f2c7b8ff8 Mon Sep 17 00:00:00 2001
From: Yang Tse <yangsita@gmail.com>
Date: Fri, 21 Oct 2011 16:26:18 +0200
Subject: multi tests: OOM handling fixes

Additionally, improved error checking and logging.
---
 tests/libtest/lib573.c | 100 ++++++++++++++++---------------------------------
 1 file changed, 33 insertions(+), 67 deletions(-)

(limited to 'tests/libtest/lib573.c')

diff --git a/tests/libtest/lib573.c b/tests/libtest/lib573.c
index 1d8602e1f..943f6e8c8 100644
--- a/tests/libtest/lib573.c
+++ b/tests/libtest/lib573.c
@@ -25,8 +25,7 @@
 #include "warnless.h"
 #include "memdebug.h"
 
-#define MAIN_LOOP_HANG_TIMEOUT     90 * 1000
-#define MULTI_PERFORM_HANG_TIMEOUT 60 * 1000
+#define TEST_HANG_TIMEOUT 60 * 1000
 
 /*
  * Get a single URL without select().
@@ -34,84 +33,51 @@
 
 int test(char *URL)
 {
-  CURL *c;
+  CURL *c = NULL;
   CURLM *m = NULL;
   int res = 0;
-  int running=1;
+  int running = 1;
   double connect_time = 0.0;
-  struct timeval mp_start;
-  char mp_timedout = FALSE;
 
-  if (curl_global_init(CURL_GLOBAL_ALL) != CURLE_OK) {
-    fprintf(stderr, "curl_global_init() failed\n");
-    return TEST_ERR_MAJOR_BAD;
-  }
+  start_test_timing();
 
-  if ((c = curl_easy_init()) == NULL) {
-    fprintf(stderr, "curl_easy_init() failed\n");
-    curl_global_cleanup();
-    return TEST_ERR_MAJOR_BAD;
-  }
+  global_init(CURL_GLOBAL_ALL);
 
-  test_setopt(c, CURLOPT_HEADER, 1L);
-  test_setopt(c, CURLOPT_URL, URL);
+  easy_init(c);
 
-  if ((m = curl_multi_init()) == NULL) {
-    fprintf(stderr, "curl_multi_init() failed\n");
-    curl_easy_cleanup(c);
-    curl_global_cleanup();
-    return TEST_ERR_MAJOR_BAD;
-  }
+  easy_setopt(c, CURLOPT_HEADER, 1L);
+  easy_setopt(c, CURLOPT_URL, URL);
 
-  if ((res = (int)curl_multi_add_handle(m, c)) != CURLM_OK) {
-    fprintf(stderr, "curl_multi_add_handle() failed, "
-            "with code %d\n", res);
-    curl_multi_cleanup(m);
-    curl_easy_cleanup(c);
-    curl_global_cleanup();
-    return TEST_ERR_MAJOR_BAD;
-  }
+  multi_init(m);
 
-  mp_timedout = FALSE;
-  mp_start = tutil_tvnow();
+  multi_add_handle(m, c);
 
   while (running) {
-    static struct timeval timeout = /* 100 ms */ { 0, 100000L };
+    struct timeval timeout;
     fd_set fdread, fdwrite, fdexcep;
-    int maxfd = -1;
-
-    res = (int)curl_multi_perform(m, &running);
-    if (tutil_tvdiff(tutil_tvnow(), mp_start) >
-        MULTI_PERFORM_HANG_TIMEOUT) {
-      mp_timedout = TRUE;
-      break;
-    }
-    if (running <= 0) {
-      fprintf(stderr, "nothing left running.\n");
-      break;
-    }
+    int maxfd = -99;
+
+    timeout.tv_sec = 0;
+    timeout.tv_usec = 100000L; /* 100 ms */
+
+    multi_perform(m, &running);
+
+    abort_on_test_timeout();
+
+    if(!running)
+      break; /* done */
 
     FD_ZERO(&fdread);
     FD_ZERO(&fdwrite);
     FD_ZERO(&fdexcep);
-    curl_multi_fdset(m, &fdread, &fdwrite, &fdexcep, &maxfd);
-
-    /* In a real-world program you OF COURSE check the return code of the
-       function calls.  On success, the value of maxfd is guaranteed to be
-       greater or equal than -1.  We call select(maxfd + 1, ...), specially in
-       case of (maxfd == -1), we call select(0, ...), which is basically equal
-       to sleep. */
-
-    if (select(maxfd + 1, &fdread, &fdwrite, &fdexcep, &timeout) == -1) {
-      res = ~CURLM_OK;
-      break;
-    }
-  }
 
-  if (mp_timedout) {
-    fprintf(stderr, "mp_timedout\nABORTING TEST, since it seems "
-            "that it would have run forever.\n");
-    res = TEST_ERR_RUNS_FOREVER;
+    multi_fdset(m, &fdread, &fdwrite, &fdexcep, &maxfd);
+
+    /* At this point, maxfd is guaranteed to be greater or equal than -1. */
+
+    select_test(maxfd+1, &fdread, &fdwrite, &fdexcep, &timeout);
+
+    abort_on_test_timeout();
   }
 
   curl_easy_getinfo(c, CURLINFO_CONNECT_TIME, &connect_time);
@@ -122,10 +88,10 @@ int test(char *URL)
 
 test_cleanup:
 
-  if(m) {
-    curl_multi_remove_handle(m, c);
-    curl_multi_cleanup(m);
-  }
+  /* proper cleanup sequence - type PA */
+
+  curl_multi_remove_handle(m, c);
+  curl_multi_cleanup(m);
   curl_easy_cleanup(c);
   curl_global_cleanup();
 
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