xref: /third_party/libuv/test/test-get-memory.c (revision e66f31c5)
1/* Copyright Joyent, Inc. and other Node 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
25TEST_IMPL(get_memory) {
26  uint64_t free_mem = uv_get_free_memory();
27  uint64_t total_mem = uv_get_total_memory();
28  uint64_t constrained_mem = uv_get_constrained_memory();
29  uint64_t available_mem = uv_get_available_memory();
30
31  printf("free_mem=%llu, total_mem=%llu, constrained_mem=%llu, "
32         "available_mem=%llu\n",
33         (unsigned long long) free_mem,
34         (unsigned long long) total_mem,
35         (unsigned long long) constrained_mem,
36         (unsigned long long) available_mem);
37
38  ASSERT_GT(free_mem, 0);
39  ASSERT_GT(total_mem, 0);
40  /* On IBMi PASE, the amount of memory in use is always zero. */
41#ifdef __PASE__
42  ASSERT_EQ(total_mem, free_mem);
43#else
44  ASSERT_GT(total_mem, free_mem);
45#endif
46  ASSERT_LE(available_mem, total_mem);
47  /* we'd really want to test if available <= free, but that is fragile:
48   * with no limit set, get_available calls and returns get_free; so if
49   * any memory was freed between our calls to get_free and get_available
50   * we would fail such a test test (as observed on CI).
51   */
52  return 0;
53}
54