XBT_LOG_NEW_DEFAULT_CATEGORY(jbod_test, "Messages specific for this simulation");
namespace sg4 = simgrid::s4u;
-static void write_then_read(simgrid::plugin::Jbod* jbod)
+static void write_then_read(simgrid::plugin::JbodPtr jbod)
{
simgrid::plugin::JbodIoPtr io = jbod->write_async(1e7);
XBT_INFO("asynchronous write posted, wait for it");
// set up link so that data transfer from host to JBOD takes exactly 1 second (without crosstraffic)
auto* link = zone->create_link("link", 1e7/0.97)->set_latency(0);
- auto* jbod_raid0 =
- simgrid::plugin::Jbod::create_jbod(zone, "jbod_raid0", 1e9, 4, simgrid::plugin::Jbod::RAID::RAID0, 1e7, 5e6);
+ auto jbod_raid0 =
+ simgrid::plugin::Jbod::create_jbod(zone, "jbod_raid0", 1e9, 4, simgrid::plugin::Jbod::RAID::RAID0, 1e7, 5e6);
zone->add_route(host, jbod_raid0->get_controller(), {link});
- auto* jbod_raid1 =
- simgrid::plugin::Jbod::create_jbod(zone, "jbod_raid1", 1e9, 4, simgrid::plugin::Jbod::RAID::RAID1, 1e7, 5e6);
+ auto jbod_raid1 =
+ simgrid::plugin::Jbod::create_jbod(zone, "jbod_raid1", 1e9, 4, simgrid::plugin::Jbod::RAID::RAID1, 1e7, 5e6);
zone->add_route(host, jbod_raid1->get_controller(), {link});
- auto* jbod_raid4 =
- simgrid::plugin::Jbod::create_jbod(zone, "jbod_raid4", 1e9, 4, simgrid::plugin::Jbod::RAID::RAID4, 1e7, 5e6);
+ auto jbod_raid4 =
+ simgrid::plugin::Jbod::create_jbod(zone, "jbod_raid4", 1e9, 4, simgrid::plugin::Jbod::RAID::RAID4, 1e7, 5e6);
zone->add_route(host, jbod_raid4->get_controller(), {link});
- auto* jbod_raid5 =
- simgrid::plugin::Jbod::create_jbod(zone, "jbod_raid5", 1e9, 4, simgrid::plugin::Jbod::RAID::RAID5, 1e7, 5e6);
+ auto jbod_raid5 =
+ simgrid::plugin::Jbod::create_jbod(zone, "jbod_raid5", 1e9, 4, simgrid::plugin::Jbod::RAID::RAID5, 1e7, 5e6);
zone->add_route(host, jbod_raid5->get_controller(), {link});
- auto* jbod_raid6 =
- simgrid::plugin::Jbod::create_jbod(zone, "jbod_raid6", 1e9, 4, simgrid::plugin::Jbod::RAID::RAID6, 1e7, 5e6);
+ auto jbod_raid6 =
+ simgrid::plugin::Jbod::create_jbod(zone, "jbod_raid6", 1e9, 4, simgrid::plugin::Jbod::RAID::RAID6, 1e7, 5e6);
zone->add_route(host, jbod_raid6->get_controller(), {link});
zone->seal();
namespace simgrid::plugin {
+class Jbod;
+using JbodPtr = boost::intrusive_ptr<Jbod>;
class JbodIo;
-/** Smart pointer to a simgrid::s4u::Activity */
using JbodIoPtr = boost::intrusive_ptr<JbodIo>;
-XBT_PUBLIC void intrusive_ptr_release(const JbodIo* io);
-XBT_PUBLIC void intrusive_ptr_add_ref(const JbodIo* io);
class Jbod {
public:
JbodIoPtr write_async(sg_size_t size);
sg_size_t write(sg_size_t size);
- static Jbod* create_jbod(s4u::NetZone* zone, const std::string& name, double speed, unsigned int num_disks,
- RAID raid_level, double read_bandwidth, double write_bandwidth);
+ static JbodPtr create_jbod(s4u::NetZone* zone, const std::string& name, double speed, unsigned int num_disks,
+ RAID raid_level, double read_bandwidth, double write_bandwidth);
protected:
void set_controller(s4u::Host* host) { controller_ = host; }
RAID raid_level_;
unsigned int parity_disk_idx_;
int read_disk_idx_;
+ std::atomic_int_fast32_t refcount_{1};
+#ifndef DOXYGEN
+ friend void intrusive_ptr_release(Jbod* jbod)
+ {
+ if (jbod->refcount_.fetch_sub(1, std::memory_order_release) == 1) {
+ std::atomic_thread_fence(std::memory_order_acquire);
+ delete jbod;
+ }
+ }
+ friend void intrusive_ptr_add_ref(Jbod* jbod) { jbod->refcount_.fetch_add(1, std::memory_order_relaxed); }
+#endif
};
class JbodIo {
#endif
};
+/* Refcounting functions */
+XBT_PUBLIC void intrusive_ptr_release(const Jbod* io);
+XBT_PUBLIC void intrusive_ptr_add_ref(const Jbod* io);
+XBT_PUBLIC void intrusive_ptr_release(const JbodIo* io);
+XBT_PUBLIC void intrusive_ptr_add_ref(const JbodIo* io);
+
} // namespace simgrid::plugin
-#endif
\ No newline at end of file
+#endif
namespace simgrid::plugin {
-Jbod* Jbod::create_jbod(s4u::NetZone* zone, const std::string& name, double speed, unsigned int num_disks,
- RAID raid_level, double read_bandwidth, double write_bandwidth)
+JbodPtr Jbod::create_jbod(s4u::NetZone* zone, const std::string& name, double speed, unsigned int num_disks,
+ RAID raid_level, double read_bandwidth, double write_bandwidth)
{
xbt_assert(not ((raid_level == RAID::RAID4 || raid_level == RAID::RAID5) && num_disks < 3),
"RAID%d requires at least 3 disks", (int) raid_level);
for (unsigned int i = 0; i < num_disks; i++)
jbod->get_controller()->create_disk(name + "_disk_" + std::to_string(i), read_bandwidth, write_bandwidth);
- return jbod;
+ return JbodPtr(jbod);
}
JbodIoPtr Jbod::read_async(sg_size_t size)