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https://github.com/mmueller41/genode.git
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ealanos: Test for class Superblock.
This commit is contained in:
Michael Mueller
52
repos/ealanos/run/superblock_test.run
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52
repos/ealanos/run/superblock_test.run
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set build_components {
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core init hoitaja timer test/superblock_test
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}
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build $build_components
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create_boot_directory
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install_config {
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<config prio_levels="32" verbose="true">
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<parent-provides>
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<service name="LOG"/>
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<service name="PD"/>
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<service name="CPU"/>
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<service name="ROM"/>
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<service name="RAM"/>
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<service name="IRQ"/>
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<service name="IO_MEM"/>
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<service name="IO_PORT"/>
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<service name="CAP"/>
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<service name="RM"/>
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<service name="SIGNAL"/>
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<service name="TRACE"/>
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</parent-provides>
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<default-route>
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<any-service><parent/><any-child/></any-service>
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</default-route>
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<default caps="2000"/>
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<affinity-space width="32" height="1"/>
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<start name="timer">
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<resource name="RAM" quantum="3M"/>
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<provides><service name="Timer"/></provides>
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<route>
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<any-service><parent/><any-child/></any-service>
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</route>
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</start>
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<start name="cell1" priority="-1">
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<binary name="superblock_test"/>
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<resource name="RAM" quantum="3M"/>
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</start>
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<!--
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<start name="cell2" priority="-2">
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<binary name="empty_cell"/>
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<resource name="RAM" quantum="3M"/>
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</start>
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-->
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</config>
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}
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build_boot_image [build_artifacts]
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append qemu_args " -nographic "
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run_genode_until forever
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164
repos/ealanos/src/test/superblock_test/main.cpp
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164
repos/ealanos/src/test/superblock_test/main.cpp
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/**
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* @file main.cpp
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* @author Michael Müller
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* @brief Component for testing superblocks
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* @version 0.1
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* @date 2025-03-06
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*
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* @copyright Copyright (c) 2025
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*
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*/
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#include <base/component.h>
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#include <base/env.h>
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#include <base/log.h>
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#include <ealanos/memory/superblock.h>
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#include <base/attached_ram_dataspace.h>
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#include <base/heap.h>
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namespace Ealan::Memory {
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class SuperblockTest;
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}
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class Ealan::Memory::SuperblockTest
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{
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private:
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Genode::Env &_env;
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class SuperblockTestThread : public Genode::Thread
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{
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private:
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Genode::Env &_env;
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Superblock<8192, 64> *_sb;
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Genode::size_t _blocks;
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SuperblockTestThread(const SuperblockTestThread &);
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SuperblockTest &operator=(SuperblockTestThread &);
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public:
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SuperblockTestThread(Genode::Env &env, Superblock<8192,64> *sb, Genode::size_t blocks, Genode::Affinity::Location loc) : Genode::Thread(env, Genode::Thread::Name("superblocktest"), 4 * 4096, loc, Genode::Cpu_session::Weight(), env.cpu()), _env(env), _sb(sb), _blocks(blocks)
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{}
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void entry() override {
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void *blocks[_blocks];
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Genode::log("Capacity of superblock ", _sb, " is ", _sb->free_blocks());
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for (unsigned i = 0; i < _blocks; i++) {
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blocks[i] = _sb->alloc();
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Genode::log("blocks[", i, "]=", blocks[i]);
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_sb->free(blocks[i]);
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Genode::log("Freed ", blocks[i]);
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}
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}
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};
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public:
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SuperblockTest(Genode::Env &env) : _env(env)
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{
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Genode::Ram_dataspace_capability ds = _env.ram().alloc(8192);
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Genode::Region_map::Attr attr{};
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attr.writeable = true;
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Genode::Region_map::Attach_result const result = _env.rm().attach(ds, attr);
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Genode::Heap heap(_env.ram(), _env.rm());
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void *sb_address = result.convert<void *>(
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[&](Genode::Region_map::Range r)
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{ return reinterpret_cast<void *>(r.start); },
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[&](Genode::Region_map::Attach_error)
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{
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return nullptr;
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});
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Genode::log("Attached dataspace for superblock");
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Superblock<8192, 64> *sb = new (sb_address) Superblock<8192, 64>(128);
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Genode::log("Superblock has ", sb->free_blocks(), " free blocks.");
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Genode::log("Superblock blocks begin at ", sb->start());
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Genode::size_t capacity = sb->free_blocks();
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Genode::log("Allocating blocks until superblock is full");
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void *blocks[capacity];
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for (unsigned i = 0; i < capacity; i++)
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{
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blocks[i] = sb->alloc();
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Genode::log("block[", i, "]=", blocks[i], " left=", sb->free_blocks());
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}
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Genode::log("Test if allocating from full block yields nullptr");
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if (!sb->alloc()) {
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Genode::log("Success.");
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} else {
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Genode::error("Got block despite superblock being full.");
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}
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Genode::log("Freeing 1/2 of the blocks (every second block) and checking if capacity is ", capacity / 2);
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for (unsigned i = 1; i < capacity; i+=2) {
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sb->free(blocks[i]);
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}
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if (sb->free_blocks() == capacity/2) {
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Genode::log("Success.");
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} else {
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Genode::error("Capacity of superblock is: ", sb->free_blocks(), " but should be ", capacity / 2);
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}
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Genode::log("The next block we allocate should be right after the first allocated block.");
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blocks[1] = sb->alloc();
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if (blocks[1] != reinterpret_cast<void*>(reinterpret_cast<Genode::addr_t>(blocks[0])+128)) {
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Genode::error("Allocator yielded wrong block: ", blocks[1]);
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} else {
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Genode::log("Success.");
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}
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Genode::log("Testing aligned alloc with default alignment=64");
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blocks[3] = sb->aligned_alloc();
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if (reinterpret_cast<Genode::addr_t>(blocks[3]) % 64 == 0) {
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Genode::log("Success");
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} else {
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Genode::error("Alignment error: ", blocks[3], " is not 64-bytes aligned");
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}
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Genode::log("Freeing all remaining blocks");
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sb->free(blocks[3]);
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sb->free(blocks[1]);
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for (unsigned i = 0; i < capacity; i+=2) {
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sb->free(blocks[i]);
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}
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if (sb->free_blocks() == capacity) {
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Genode::log("Success. Full capacitiy restored.");
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} else {
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Genode::error("Could not free all blocks. Capacity is now: ", sb->free_blocks());
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}
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Genode::log("Thread-safety test ");
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SuperblockTestThread *threads[8];
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for (unsigned i = 0; i < 8; i++)
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{
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threads[i] = new (heap) SuperblockTestThread(env, sb, capacity / 8, env.cpu().affinity_space().location_of_index(i));
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threads[i]->start();
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}
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Genode::log("Threads started. Waiting for completion..");
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for (unsigned i = 0; i < 8; i++)
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{
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threads[i]->join();
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}
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Genode::log("Threads finished. There should be ", capacity, " blocks left now.");
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if (sb->free_blocks() == capacity) {
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Genode::log("Success.");
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} else {
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Genode::error("Failed: ", sb->free_blocks(), "left.");
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}
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}
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};
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void Component::construct(Genode::Env &env)
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{
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static Ealan::Memory::SuperblockTest test(env);
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}
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6
repos/ealanos/src/test/superblock_test/target.mk
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6
repos/ealanos/src/test/superblock_test/target.mk
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@@ -0,0 +1,6 @@
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TARGET = superblock_test
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SRC_CC = main.cpp
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LIBS = base
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INC_DIR = $(PRG_DIR)
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INC_DIR += $(REP_DIR)/include
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