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bomb: drop sleep_forever and signal_receiver

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Alexander Boettcher 2016-12-08 11:37:08 +01:00 committed by Norman Feske
parent f613cd2aa9
commit d8f2610e9c
1 changed files with 82 additions and 57 deletions
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139
repos/os/src/test/bomb/main.cc
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@ -2,10 +2,8 @@
* \brief Fork bomb to stress Genode
* \author Christian Helmuth
* \author Norman Feske
* \author Alexander Böttcher
* \date 2007-08-16
*
* The better part of this code is derived from the original init
* implementation by Norman.
*/
/*
@ -17,7 +15,6 @@
#include <base/component.h>
#include <base/child.h>
#include <base/sleep.h>
#include <base/service.h>
#include <base/attached_rom_dataspace.h>
#include <init/child_policy.h>
@ -151,84 +148,112 @@ unique_child_name(Children const &children, Bomb_child::Name const &binary_name,
}
void Component::construct(Genode::Env &env)
struct Bomb
{
static Attached_rom_dataspace config(env, "config");
Xml_node node = config.xml();
Genode::Env &env;
unsigned const rounds = node.attribute_value("rounds", 1U);
unsigned const generation = node.attribute_value("generations", 1U);
unsigned const children = node.attribute_value("children", 2U);
unsigned const sleeptime = node.attribute_value("sleep", 2000U);
unsigned long const demand = node.attribute_value("demand", 1024UL * 1024);
Constructible<Timer::Connection> timer;
log("--- bomb started ---");
Genode::Signal_handler<Bomb> signal_timeout { env.ep(), *this, &Bomb::destruct_children };
Genode::Signal_handler<Bomb> signal_resource { env.ep(), *this, &Bomb::resource_request };
/* try to create timer session, if it fails, bomb is our parent */
static Constructible<Timer::Connection> timer;
try { timer.construct(env); } catch (Parent::Service_denied) { }
Attached_rom_dataspace config { env, "config" };
if (timer.constructed())
log("rounds=", rounds, " generations=", generation, " children=",
children, " sleep=", sleeptime, " demand=", demand/1024, "K");
unsigned round = 0;
unsigned const rounds = config.xml().attribute_value("rounds", 1U);
unsigned const generation = config.xml().attribute_value("generations", 1U);
unsigned const children = config.xml().attribute_value("children", 2U);
unsigned const sleeptime = config.xml().attribute_value("sleep", 2000U);
unsigned long const demand = config.xml().attribute_value("demand", 1024UL * 1024);
Heap heap { env.ram(), env.rm() };
Children child_registry;
/* names of services provided by the parent */
static const char *names[] = {
"RAM", "PD", "CPU", "ROM", "LOG", 0 };
const char *names[6] = { "RAM", "PD", "CPU", "ROM", "LOG", 0};
Registry<Registered<Parent_service> > parent_services;
static Heap heap(env.ram(), env.rm());
void construct_children()
{
unsigned long avail = env.ram().avail();
unsigned long amount = (avail - demand) / children;
if (amount < (demand * children)) {
log("I'm a leaf node - generation ", generation,
" - not enough memory.");
return;
}
if (generation == 0) {
log("I'm a leaf node - generation 0");
return;
}
static Registry<Registered<Parent_service> > parent_services;
for (unsigned i = 0; names[i]; i++)
new (heap) Registered<Parent_service>(parent_services, names[i]);
log("[", round, "] It's time to start all my children...");
unsigned long avail = env.ram().avail();
unsigned long amount = (avail - demand) / children;
if (amount < (demand * children)) {
log("I'm a leaf node - generation ", generation, " - not enough memory.");
sleep_forever();
}
if (generation == 0) {
log("I'm a leaf node - generation 0");
sleep_forever();
}
Bomb_child::Name const binary_name("bomb");
static Children child_registry;
Bomb_child::Name const binary_name("bomb");
for (unsigned round = 0; round < rounds ; ++round) {
for (unsigned i = children; i; --i) {
new (heap)
Registered<Bomb_child>(child_registry, env, binary_name,
unique_child_name(child_registry, binary_name,
unique_child_name(child_registry,
binary_name,
generation - 1),
amount, parent_services, generation - 1);
}
/* is init our parent? */
if (!timer.constructed()) sleep_forever();
/* master if we have a timer connection */
if (timer.constructed())
timer->trigger_once(sleeptime * 1000);
}
/* don't ask parent for further resources if we ran out of memory */
static Signal_receiver sig_rec;
static Signal_context sig_ctx_res_avail;
if (round == 0) {
/* prevent to block for resource upgrades caused by clients */
env.parent().resource_avail_sigh(sig_rec.manage(&sig_ctx_res_avail));
}
timer->msleep(sleeptime);
void destruct_children()
{
log("[", round, "] It's time to kill all my children...");
child_registry.for_each([&] (Registered<Bomb_child> &child) {
destroy(heap, &child); });
log("[", round, "] Done.");
++round;
/* master if we have a timer connection */
if (round == rounds && timer.constructed())
log("Done. Going to sleep");
construct_children();
}
/* master if we have a timer connection */
if (timer.constructed())
log("Done. Going to sleep");
void resource_request()
{
Genode::error("resource request");
}
sleep_forever();
}
Bomb(Genode::Env &env) : env(env)
{
for (unsigned i = 0; names[i]; i++)
new (heap) Registered<Parent_service>(parent_services, names[i]);
/*
* Don't ask parent for further resources if we ran out of memory.
* Prevent us to block for resource upgrades caused by clients
*/
env.parent().resource_avail_sigh(signal_resource);
log("--- bomb started ---");
/* try to create timer session, if it fails, bomb is our parent */
try { timer.construct(env); } catch (Parent::Service_denied) { }
if (timer.constructed()) {
timer->sigh(signal_timeout);
log("rounds=", rounds, " generations=", generation, " children=",
children, " sleep=", sleeptime, " demand=", demand/1024, "K");
}
construct_children();
}
};
void Component::construct(Genode::Env &env) { static Bomb bomb(env); }