tildefriends/deps/libuv/test/test-process-priority.c

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/* Copyright libuv contributors. All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/
#include "uv.h"
#include "task.h"
TEST_IMPL(process_priority) {
int priority;
int r;
int i;
#if defined(__MVS__)
if (uv_os_setpriority(0, 0) == UV_ENOSYS)
RETURN_SKIP("functionality not supported on zOS");
#endif
/* Verify that passing a NULL pointer returns UV_EINVAL. */
r = uv_os_getpriority(0, NULL);
ASSERT_EQ(r, UV_EINVAL);
/* Verify that all valid values work. */
for (i = UV_PRIORITY_HIGHEST; i <= UV_PRIORITY_LOW; i++) {
r = uv_os_setpriority(0, i);
/* If UV_EACCES is returned, the current user doesn't have permission to
set this specific priority. */
if (r == UV_EACCES)
continue;
ASSERT_OK(r);
ASSERT_OK(uv_os_getpriority(0, &priority));
/* Verify that the priority values match on Unix, and are range mapped
on Windows. */
#ifndef _WIN32
ASSERT_EQ(priority, i);
#else
/* On Windows, only elevated users can set UV_PRIORITY_HIGHEST. Other
users will silently be set to UV_PRIORITY_HIGH. */
if (i < UV_PRIORITY_HIGH)
ASSERT(priority == UV_PRIORITY_HIGHEST || priority == UV_PRIORITY_HIGH);
else if (i < UV_PRIORITY_ABOVE_NORMAL)
ASSERT_EQ(priority, UV_PRIORITY_HIGH);
else if (i < UV_PRIORITY_NORMAL)
ASSERT_EQ(priority, UV_PRIORITY_ABOVE_NORMAL);
else if (i < UV_PRIORITY_BELOW_NORMAL)
ASSERT_EQ(priority, UV_PRIORITY_NORMAL);
else if (i < UV_PRIORITY_LOW)
ASSERT_EQ(priority, UV_PRIORITY_BELOW_NORMAL);
else
ASSERT_EQ(priority, UV_PRIORITY_LOW);
#endif
/* Verify that the current PID and 0 are equivalent. */
ASSERT_OK(uv_os_getpriority(uv_os_getpid(), &r));
ASSERT_EQ(priority, r);
}
/* Verify that invalid priorities return UV_EINVAL. */
ASSERT_EQ(uv_os_setpriority(0, UV_PRIORITY_HIGHEST - 1), UV_EINVAL);
ASSERT_EQ(uv_os_setpriority(0, UV_PRIORITY_LOW + 1), UV_EINVAL);
return 0;
}