96 lines
2.2 KiB
C++
96 lines
2.2 KiB
C++
//
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// Copyright Aliaksei Levin (levlam@telegram.org), Arseny Smirnov (arseny30@gmail.com) 2014-2020
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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#include "td/utils/port/rlimit.h"
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#include "td/utils/port/config.h"
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#include "td/utils/misc.h"
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#if TD_PORT_POSIX
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#include <sys/resource.h>
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#include <sys/time.h>
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#include <sys/types.h>
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#endif
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namespace td {
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#if TD_PORT_POSIX
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namespace {
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int get_rlimit_type(ResourceLimitType rlim_type) {
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switch (rlim_type) {
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case ResourceLimitType::NoFile:
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return RLIMIT_NOFILE;
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case ResourceLimitType::Rss:
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return RLIMIT_RSS;
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default:
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UNREACHABLE();
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}
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}
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} // namespace
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td::Status set_resource_limit(ResourceLimitType rlim_type, td::uint64 value, td::uint64 cap) {
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if (cap && value > cap) {
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return td::Status::Error("setrlimit(): bad argument");
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}
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int resource = get_rlimit_type(rlim_type);
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struct rlimit r;
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if (getrlimit(resource, &r) < 0) {
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return td::Status::PosixError(errno, "failed getrlimit()");
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}
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if (cap) {
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r.rlim_max = cap;
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} else if (r.rlim_max < value) {
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r.rlim_max = value;
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}
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r.rlim_cur = value;
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if (setrlimit(resource, &r) < 0) {
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return td::Status::PosixError(errno, "failed setrlimit()");
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}
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return td::Status::OK();
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}
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td::Status set_maximize_resource_limit(ResourceLimitType rlim_type, td::uint64 value) {
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int resource = get_rlimit_type(rlim_type);
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struct rlimit r;
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if (getrlimit(resource, &r) < 0) {
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return td::Status::PosixError(errno, "failed getrlimit()");
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}
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if (r.rlim_max < value) {
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auto t = r;
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t.rlim_cur = value;
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t.rlim_max = value;
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if (setrlimit(resource, &t) >= 0) {
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return td::Status::OK();
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}
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}
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r.rlim_cur = value < r.rlim_max ? value : r.rlim_max;
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if (setrlimit(resource, &r) < 0) {
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return td::Status::PosixError(errno, "failed setrlimit()");
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}
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return td::Status::OK();
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}
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#else
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td::Status set_resource_limit(ResourceLimitType rlim, td::uint64 value) {
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return td::Status::Error("setrlimit not implemented on WINDOWS");
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}
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td::Status set_maximize_resource_limit(ResourceLimitType rlim, td::uint64 value) {
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return td::Status::OK();
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}
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#endif
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} // namespace td
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