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      1 /* Copyright libuv contributors. All rights reserved.
      2  *
      3  * Permission is hereby granted, free of charge, to any person obtaining a copy
      4  * of this software and associated documentation files (the "Software"), to
      5  * deal in the Software without restriction, including without limitation the
      6  * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
      7  * sell copies of the Software, and to permit persons to whom the Software is
      8  * furnished to do so, subject to the following conditions:
      9  *
     10  * The above copyright notice and this permission notice shall be included in
     11  * all copies or substantial portions of the Software.
     12  *
     13  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     14  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     15  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
     16  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
     17  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
     18  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
     19  * IN THE SOFTWARE.
     20  */
     21 
     22 #include "uv.h"
     23 #include "task.h"
     24 #include <stdlib.h>
     25 #include <string.h>
     26 
     27 static int limit;
     28 static int alloc;
     29 
     30 static void* t_realloc(void* p, size_t n) {
     31   alloc += n;
     32   if (alloc > limit)
     33     return NULL;
     34   p = realloc(p, n);
     35   ASSERT_NOT_NULL(p);
     36   return p;
     37 }
     38 
     39 static void* t_calloc(size_t m, size_t n) {
     40   return t_realloc(NULL, m * n);
     41 }
     42 
     43 static void* t_malloc(size_t n) {
     44   return t_realloc(NULL, n);
     45 }
     46 
     47 TEST_IMPL(loop_init_oom) {
     48   uv_loop_t loop;
     49   int err;
     50 
     51   ASSERT_OK(uv_replace_allocator(t_malloc, t_realloc, t_calloc, free));
     52   for (;;) {
     53     err = uv_loop_init(&loop);
     54     if (err == 0)
     55       break;
     56     ASSERT_EQ(err, UV_ENOMEM);
     57     limit += 8;
     58     alloc = 0;
     59   }
     60   ASSERT_OK(uv_loop_close(&loop));
     61   return 0;
     62 }
     63