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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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#include <drizzled/errmsg_print.h>
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#include <drizzled/server_includes.h>
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#include <drizzled/scheduling.h>
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#include <drizzled/gettext.h>
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#include <drizzled/plugin/scheduler.h>
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extern size_t my_thread_stack_size;
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std::vector<plugin::Scheduler *> all_schedulers;
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static plugin::Scheduler *scheduler= NULL;
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class FindSchedulerByName : public std::unary_function<plugin::Scheduler *, bool>
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const std::string *name;
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FindSchedulerByName(const std::string *name_arg)
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result_type operator() (argument_type sched)
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return (bool)((name->compare(sched->getName()) == 0));
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bool plugin::Scheduler::addPlugin(plugin::Scheduler *sched)
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std::vector<plugin::Scheduler *>::iterator iter=
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std::find_if(all_schedulers.begin(), all_schedulers.end(),
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FindSchedulerByName(&sched->getName()));
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if (iter != all_schedulers.end())
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errmsg_printf(error::ERROR,
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_("Attempted to register a scheduler %s, but a scheduler "
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"has already been registered with that name.\n"),
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sched->getName().c_str());
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all_schedulers.push_back(sched);
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void plugin::Scheduler::removePlugin(plugin::Scheduler *sched)
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all_schedulers.erase(std::find(all_schedulers.begin(),
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bool plugin::Scheduler::setPlugin(const std::string& name)
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std::vector<plugin::Scheduler *>::iterator iter=
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std::find_if(all_schedulers.begin(), all_schedulers.end(),
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FindSchedulerByName(&name));
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if (iter != all_schedulers.end())
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if (scheduler != NULL)
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scheduler->deactivate();
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scheduler->activate();
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errmsg_printf(error::WARN,
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_("Attempted to configure %s as the scheduler, which did "
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"not exist.\n"), name.c_str());
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plugin::Scheduler *plugin::Scheduler::getScheduler()
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} /* namespace drizzled */
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#include <drizzled/plugin_scheduling.h>
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#include <drizzled/connect.h>
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scheduling_st thread_scheduler;
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static bool scheduler_inited= false; /* We must insist that only one of these plugins get loaded at a time */
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static void post_kill_dummy(Session *) { return; }
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static bool end_thread_dummy(Session *, bool) { return false; }
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extern char *opt_scheduler;
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int scheduling_initializer(st_plugin_int *plugin)
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if (memcmp(plugin->plugin->name, opt_scheduler, strlen(opt_scheduler)))
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fprintf(stderr, "You cannot load more then one scheduler plugin\n");
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memset(&thread_scheduler, 0, sizeof(scheduling_st));
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assert(plugin->plugin->init); /* Find poorly designed plugins */
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if (plugin->plugin->init)
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thread_scheduler.post_kill_notification= post_kill_dummy;
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thread_scheduler.end_thread= end_thread_dummy;
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thread_scheduler.init_new_connection_thread= init_new_connection_handler_thread;
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if (plugin->plugin->init((void *)&thread_scheduler))
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TRANSLATORS> The leading word "scheduling" is the name
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of the plugin api, and so should not be translated.
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errmsg_printf(ERRMSG_LVL_ERROR, _("scheduling plugin '%s' init() failed"),
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/* We are going to assert() on any plugin that is not well written. */
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assert(thread_scheduler.max_threads);
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assert(thread_scheduler.init_new_connection_thread);
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assert(thread_scheduler.add_connection);
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assert(thread_scheduler.post_kill_notification);
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assert(thread_scheduler.end_thread);
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scheduler_inited= true;
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/* We populate so we can find which plugin was initialized later on */
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plugin->data= (void *)&thread_scheduler;
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plugin->state= PLUGIN_IS_READY;
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int scheduling_finalizer(st_plugin_int *plugin)
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/* We know which one we initialized since its data pointer is filled */
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if (plugin->plugin->deinit && plugin->data)
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if (plugin->plugin->deinit((void *)&thread_scheduler))
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/* TRANSLATORS: The leading word "scheduling" is the name
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of the plugin api, and so should not be translated. */
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errmsg_printf(ERRMSG_LVL_ERROR, _("scheduling plugin '%s' deinit() failed"),