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71c9fcf6f6
The GNU libc function malloc_trim(3) attempts to release free memory from the main heap arena of Icinga 2 itself. statistics of Icinga 2 itself.
85 lines
2 KiB
C++
85 lines
2 KiB
C++
// SPDX-FileCopyrightText: 2024 Icinga GmbH <https://icinga.com>
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// SPDX-License-Identifier: GPL-3.0-or-later
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#include "remote/filterutility.hpp"
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#include "remote/httputility.hpp"
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#include "remote/malloctrimhandler.hpp"
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#include <boost/lexical_cast.hpp>
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#include <cstddef>
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#ifdef HAVE_MALLOC_TRIM
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# include <malloc.h>
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#endif /* HAVE_MALLOC_TRIM */
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using namespace icinga;
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REGISTER_URLHANDLER("/v1/debug/malloc_trim", MallocTrimHandler);
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bool MallocTrimHandler::HandleRequest(
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const WaitGroup::Ptr&,
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const HttpApiRequest& request,
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HttpApiResponse& response,
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boost::asio::yield_context&
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)
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{
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namespace http = boost::beast::http;
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auto url = request.Url();
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auto user = request.User();
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auto params = request.Params();
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if (url->GetPath().size() != 3) {
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return false;
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}
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if (request.method() != http::verb::post) {
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return false;
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}
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auto rawPad (HttpUtility::GetLastParameter(params, "pad"));
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size_t pad = 0;
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if (rawPad.GetType() != ValueEmpty) {
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try {
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pad = boost::lexical_cast<size_t>(rawPad);
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} catch (const std::exception&) {
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HttpUtility::SendJsonError(response, params, 400,
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"Invalid 'pad' specified. An integer [0," BOOST_PP_STRINGIZE(SIZE_MAX) "] is required.");
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return true;
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}
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}
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FilterUtility::CheckPermission(user, "debug");
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#ifndef HAVE_MALLOC_TRIM
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HttpUtility::SendJsonError(response, params, 501, "malloc_trim(3) not available.");
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#else /* HAVE_MALLOC_TRIM */
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Dictionary::Ptr result1;
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auto ret (malloc_trim(pad));
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if (ret) {
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result1 = new Dictionary({
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{ "code", 200 },
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{ "malloc_trim", ret },
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{ "status", "Some memory was released back to the system." }
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});
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} else {
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result1 = new Dictionary({
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{ "code", 503 },
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{ "malloc_trim", ret },
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{ "status", "It was not possible to release any memory." }
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});
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response.result(http::status::service_unavailable);
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}
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Dictionary::Ptr result = new Dictionary({
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{ "results", new Array({ result1 }) }
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});
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HttpUtility::SendJsonBody(response, params, result);
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#endif /* HAVE_MALLOC_TRIM */
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return true;
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}
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