-/* Copyright (c) 2019-2021. The SimGrid Team. All rights reserved. */
+/* Copyright (c) 2019-2023. The SimGrid Team. All rights reserved. */
/* This program is free software; you can redistribute it and/or modify it
* under the terms of the license (GNU LGPL) which comes with this package. */
Disk* set_state_profile(kernel::profile::Profile* profile);
Disk* set_read_bandwidth_profile(kernel::profile::Profile* profile);
Disk* set_write_bandwidth_profile(kernel::profile::Profile* profile);
+ /**
+ * @brief Set the max amount of operations (either read or write) that can take place on this disk at the same time
+ *
+ * Use -1 to set no limit.
+ */
+ Disk* set_concurrency_limit(int limit);
+ int get_concurrency_limit() const;
IoPtr io_init(sg_size_t size, s4u::Io::OpType type) const;
IoPtr read_async(sg_size_t size) const;
sg_size_t read(sg_size_t size) const;
+ sg_size_t read(sg_size_t size, double priority) const;
IoPtr write_async(sg_size_t size) const;
sg_size_t write(sg_size_t size) const;
+ sg_size_t write(sg_size_t size, double priority) const;
/** @brief Policy for sharing the disk among activities */
enum class SharingPolicy { NONLINEAR = 1, LINEAR = 0 };
/**
* @brief Describes how the disk is shared between activities for each operation
*
- * Disks have different bandwidths for read and write operations. This method
- * allows you to set different sharing policies for each operation:
+ * Disks have different bandwidths for read and write operations, that can have different policies:
* - Read: resource sharing for read operation
* - Write: resource sharing for write
* - ReadWrite: global sharing for read and write operations
*
+ * Note that the NONLINEAR callback is in the critical path of the solver, so it should be fast.
+ *
* @param op Operation type
* @param policy Sharing policy
* @param cb Callback for NONLINEAR policies
Disk* seal();
/* The signals */
- /** @brief Callback signal fired when a new Disk is created */
+ /** @brief Add a callback fired when a new Disk is created */
+ static void on_creation_cb(const std::function<void(Disk&)>& cb) { on_creation.connect(cb); }
+ /** @brief Add a callback fired when any Disk is destroyed */
+ static void on_destruction_cb(const std::function<void(Disk const&)>& cb) { on_destruction.connect(cb); }
+ /** @brief Add a callback fired when this specific Disk is destroyed */
+ void on_this_destruction_cb(const std::function<void(Disk const&)>& cb) { on_this_destruction.connect(cb); }
+ /** @brief Add a callback fired when the state of any Disk changes */
+ static void on_state_change_cb(const std::function<void(Disk const&)>& cb) { on_state_change.connect(cb); }
+ /** @brief Add a callback fired when the state of this specific Disk changes */
+ void on_this_state_change_cb(const std::function<void(Disk const&)>& cb) { on_this_state_change.connect(cb); }
+
+private:
static xbt::signal<void(Disk&)> on_creation;
- /** @brief Callback signal fired when a Disk is destroyed */
static xbt::signal<void(Disk const&)> on_destruction;
- /** @brief Callback signal fired when a Disk's state changes */
+ xbt::signal<void(Disk const&)> on_this_destruction;
static xbt::signal<void(Disk const&)> on_state_change;
+ xbt::signal<void(Disk const&)> on_this_state_change;
};
} // namespace s4u