bind/lib/isc/meminfo.c

/*
 * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
 *
 * SPDX-License-Identifier: MPL-2.0
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, you can obtain one at https://mozilla.org/MPL/2.0/.
 *
 * See the COPYRIGHT file distributed with this work for additional
 * information regarding copyright ownership.
 */

#include <inttypes.h>

#include <isc/meminfo.h>
#include <isc/uv.h>

uint64_t
isc_meminfo_totalphys(void) {
	uint64_t tmem = uv_get_total_memory();
#if UV_VERSION_HEX >= UV_VERSION(1, 29, 0)
	uint64_t cmem = uv_get_constrained_memory();
	if (cmem > 0 && cmem < tmem) {
		return (cmem);
	}
#endif /* UV_VERSION_HEX >= UV_VERSION(1, 29, 0) */
	return (tmem);
}
4223. [func] Add support for setting max-cache-size to percentage of available physical memory, set default to 90%. [RT #38442] 2015-09-28 11:08:50 +02:00			`/*`
			`* Copyright (C) Internet Systems Consortium, Inc. ("ISC")`
			`*`
			`* SPDX-License-Identifier: MPL-2.0`
Update the copyright information in all files in the repository This commit converts the license handling to adhere to the REUSE specification. It specifically: 1. Adds used licnses to LICENSES/ directory 2. Add "isc" template for adding the copyright boilerplate 3. Changes all source files to include copyright and SPDX license header, this includes all the C sources, documentation, zone files, configuration files. There are notes in the doc/dev/copyrights file on how to add correct headers to the new files. 4. Handle the rest that can't be modified via .reuse/dep5 file. The binary (or otherwise unmodifiable) files could have license places next to them in <foo>.license file, but this would lead to cluttered repository and most of the files handled in the .reuse/dep5 file are system test files. 2021-06-03 08:37:05 +02:00			`*`
4223. [func] Add support for setting max-cache-size to percentage of available physical memory, set default to 90%. [RT #38442] 2015-09-28 11:08:50 +02:00			`* This Source Code Form is subject to the terms of the Mozilla Public`
			`* License, v. 2.0. If a copy of the MPL was not distributed with this`
			`* file, you can obtain one at https://mozilla.org/MPL/2.0/.`
Update license headers to not include years in copyright in all applicable files 2018-02-23 09:53:12 +01:00			`*`
4223. [func] Add support for setting max-cache-size to percentage of available physical memory, set default to 90%. [RT #38442] 2015-09-28 11:08:50 +02:00			`* See the COPYRIGHT file distributed with this work for additional`
			`* information regarding copyright ownership.`
			`*/`

Replace custom isc_u?intNN_t types with C99 u?intNN_t types 2018-03-28 14:19:37 +02:00			`#include <inttypes.h>`
Cleanup the sysctlbyname and friends configure checks and ifdefs Cleanup various checks and cleanups that are available on the all platforms like sysctlbyname() and various related <sys/*.h> headers that are either defined in POSIX or available on Linux and all BSDs. 2024-09-20 08:45:46 +02:00
			`#include <isc/meminfo.h>`
Use libuv functions to get memory available to BIND 9 This change uses uv_get_total_memory() to get the memory available to BIND 9 with possible modification by uv_get_constrained_memory() if the libuv version is recent enough to honour constraints created by f.e. cgroups. 2024-09-20 09:10:20 +02:00			`#include <isc/uv.h>`
4223. [func] Add support for setting max-cache-size to percentage of available physical memory, set default to 90%. [RT #38442] 2015-09-28 11:08:50 +02:00
Replace custom isc_u?intNN_t types with C99 u?intNN_t types 2018-03-28 14:19:37 +02:00			`uint64_t`
4223. [func] Add support for setting max-cache-size to percentage of available physical memory, set default to 90%. [RT #38442] 2015-09-28 11:08:50 +02:00			`isc_meminfo_totalphys(void) {`
Use libuv functions to get memory available to BIND 9 This change uses uv_get_total_memory() to get the memory available to BIND 9 with possible modification by uv_get_constrained_memory() if the libuv version is recent enough to honour constraints created by f.e. cgroups. 2024-09-20 09:10:20 +02:00			`uint64_t tmem = uv_get_total_memory();`
			`#if UV_VERSION_HEX >= UV_VERSION(1, 29, 0)`
			`uint64_t cmem = uv_get_constrained_memory();`
			`if (cmem > 0 && cmem < tmem) {`
			`return (cmem);`
Handle the errors from sysconf() call in isc_meminfo_totalphys() isc_meminfo_totalphys() would return invalid memory size when sysconf() call would fail, because ((size_t)-1 * -1) is very large number. 2020-09-17 14:37:24 +02:00			`}`
Use libuv functions to get memory available to BIND 9 This change uses uv_get_total_memory() to get the memory available to BIND 9 with possible modification by uv_get_constrained_memory() if the libuv version is recent enough to honour constraints created by f.e. cgroups. 2024-09-20 09:10:20 +02:00			`#endif /* UV_VERSION_HEX >= UV_VERSION(1, 29, 0) */`
			`return (tmem);`
4223. [func] Add support for setting max-cache-size to percentage of available physical memory, set default to 90%. [RT #38442] 2015-09-28 11:08:50 +02:00			`}`