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120 lines
2.7 KiB
C++
120 lines
2.7 KiB
C++
/* -*- c-basic-offset: 2 -*- */
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/*
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Copyright(C) 2015 Kouhei Sutou <kou@clear-code.com>
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA
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*/
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#include "mrn_context_pool.hpp"
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#include "mrn_lock.hpp"
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#include <time.h>
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namespace mrn {
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// for debug
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#define MRN_CLASS_NAME "mrn::ContextPool::Impl"
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class ContextPool::Impl {
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public:
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Impl(mysql_mutex_t *mutex)
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: mutex_(mutex),
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pool_(NULL),
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last_pull_time_(0) {
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}
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~Impl(void) {
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clear();
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}
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grn_ctx *pull(void) {
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MRN_DBUG_ENTER_METHOD();
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grn_ctx *ctx = NULL;
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{
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time_t now;
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time(&now);
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mrn::Lock lock(mutex_);
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if (pool_) {
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ctx = static_cast<grn_ctx *>(pool_->data);
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list_pop(pool_);
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if ((uint) (now - last_pull_time_) >= CLEAR_THREATHOLD_IN_SECONDS) {
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clear();
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}
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}
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last_pull_time_ = now;
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}
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if (!ctx) {
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ctx = grn_ctx_open(0);
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}
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DBUG_RETURN(ctx);
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}
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void release(grn_ctx *ctx) {
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MRN_DBUG_ENTER_METHOD();
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{
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mrn::Lock lock(mutex_);
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list_push(pool_, ctx);
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grn_ctx_use(ctx, NULL);
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}
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DBUG_VOID_RETURN;
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}
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private:
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static const int CLEAR_THREATHOLD_IN_SECONDS = 60 * 5;
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mysql_mutex_t *mutex_;
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LIST *pool_;
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time_t last_pull_time_;
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void clear(void) {
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MRN_DBUG_ENTER_METHOD();
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while (pool_) {
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grn_ctx *ctx = static_cast<grn_ctx *>(pool_->data);
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grn_ctx_close(ctx);
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list_pop(pool_);
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}
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DBUG_VOID_RETURN;
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}
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};
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// For debug
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#undef MRN_CLASS_NAME
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#define MRN_CLASS_NAME "mrn::ContextPool"
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ContextPool::ContextPool(mysql_mutex_t *mutex)
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: impl_(new Impl(mutex)) {
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}
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ContextPool::~ContextPool(void) {
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delete impl_;
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}
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grn_ctx *ContextPool::pull(void) {
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MRN_DBUG_ENTER_METHOD();
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grn_ctx *ctx = impl_->pull();
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DBUG_RETURN(ctx);
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}
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void ContextPool::release(grn_ctx *ctx) {
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MRN_DBUG_ENTER_METHOD();
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impl_->release(ctx);
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DBUG_VOID_RETURN;
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}
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}
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