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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include <vespa/vespalib/testkit/test_kit.h>
#include <vespa/vespalib/testkit/time_bomb.h>
#include <vespa/vespalib/portal/handle_manager.h>
#include <atomic>
using namespace vespalib;
using namespace vespalib::portal;
TEST_F("require that handles can be created, locked and destroyed", TimeBomb(60)) {
HandleManager manager;
uint64_t handle = manager.create();
EXPECT_TRUE(handle != manager.null_handle());
{
HandleGuard guard = manager.lock(handle);
EXPECT_TRUE(guard.valid());
EXPECT_EQUAL(guard.handle(), handle);
}
EXPECT_TRUE(manager.destroy(handle));
{
HandleGuard guard = manager.lock(handle);
EXPECT_TRUE(!guard.valid());
EXPECT_EQUAL(guard.handle(), manager.null_handle());
}
}
TEST_F("require that multiple guards can be taken for the same handle", TimeBomb(60)) {
HandleManager manager;
uint64_t handle = manager.create();
EXPECT_TRUE(handle != manager.null_handle());
{
HandleGuard guard1 = manager.lock(handle);
HandleGuard guard2 = manager.lock(handle); // <- does not block
EXPECT_TRUE(guard1.valid());
EXPECT_EQUAL(guard1.handle(), handle);
EXPECT_TRUE(guard2.valid());
EXPECT_EQUAL(guard2.handle(), handle);
}
EXPECT_TRUE(manager.destroy(handle));
}
TEST_F("require that handles are independent", TimeBomb(60)) {
HandleManager manager;
uint64_t handle1 = manager.create();
uint64_t handle2 = manager.create();
uint64_t handle3 = manager.create();
EXPECT_TRUE(handle1 != manager.null_handle());
EXPECT_TRUE(handle2 != manager.null_handle());
EXPECT_TRUE(handle3 != manager.null_handle());
EXPECT_TRUE(handle1 != handle2);
EXPECT_TRUE(handle1 != handle3);
EXPECT_TRUE(handle2 != handle3);
{
HandleGuard guard1 = manager.lock(handle1);
HandleGuard guard2 = manager.lock(handle2);
EXPECT_TRUE(guard1.valid());
EXPECT_EQUAL(guard1.handle(), handle1);
EXPECT_TRUE(guard2.valid());
EXPECT_EQUAL(guard2.handle(), handle2);
EXPECT_TRUE(manager.destroy(handle3)); // <- does not block
HandleGuard guard3 = manager.lock(handle3);
EXPECT_TRUE(!guard3.valid());
EXPECT_EQUAL(guard3.handle(), manager.null_handle());
}
EXPECT_TRUE(manager.destroy(handle1));
EXPECT_TRUE(manager.destroy(handle2));
EXPECT_TRUE(!manager.destroy(handle3));
}
struct Fixture {
HandleManager manager;
uint64_t handle;
Gate gate;
std::atomic<size_t> cnt1;
std::atomic<size_t> cnt2;
Fixture() : manager(), handle(manager.create()), gate(), cnt1(0), cnt2(0) {}
};
TEST_MT_FF("require that destroy waits for active handle guards", 2, Fixture(), TimeBomb(60)) {
if (thread_id == 0) {
{
auto guard = f1.manager.lock(f1.handle);
TEST_BARRIER(); // #1
EXPECT_TRUE(!f1.gate.await(20ms));
}
EXPECT_TRUE(f1.gate.await(60s));
} else {
TEST_BARRIER(); // #1
EXPECT_TRUE(f1.manager.destroy(f1.handle));
f1.gate.countDown();
}
}
TEST_MT_FF("require that destroy disables ability to lock handles", 3, Fixture(), TimeBomb(60)) {
if (thread_id == 0) {
auto guard = f1.manager.lock(f1.handle);
ASSERT_TRUE(guard.valid());
TEST_BARRIER(); // #1
while (f1.cnt1 == 0) {
std::this_thread::sleep_for(std::chrono::milliseconds(1));
}
EXPECT_EQUAL(f1.cnt2, 0u);
} else if (thread_id == 1) {
TEST_BARRIER(); // #1
EXPECT_TRUE(f1.manager.destroy(f1.handle));
EXPECT_EQUAL(f1.cnt1, 1u);
++f1.cnt2;
} else {
TEST_BARRIER(); // #1
while (f1.cnt1 == 0) {
auto guard = f1.manager.lock(f1.handle);
if (guard.valid()) {
std::this_thread::sleep_for(std::chrono::milliseconds(1));
} else {
EXPECT_EQUAL(f1.cnt2, 0u);
++f1.cnt1;
}
}
}
}
TEST_MT_FF("require that a single destroy call returns true", 10, Fixture(), TimeBomb(60)) {
if (thread_id == 0) { // 1 thread here
auto guard = f1.manager.lock(f1.handle);
ASSERT_TRUE(guard.valid());
TEST_BARRIER(); // #1
std::this_thread::sleep_for(std::chrono::milliseconds(1));
} else { // 'many' threads here
TEST_BARRIER(); // #1
if (f1.manager.destroy(f1.handle)) {
++f1.cnt1;
} else {
++f1.cnt2;
}
}
TEST_BARRIER(); // #2
EXPECT_EQUAL(f1.cnt1, 1u);
EXPECT_GREATER(num_threads, 5u);
EXPECT_EQUAL(f1.cnt2, (num_threads - 2));
}
TEST_MAIN() { TEST_RUN_ALL(); }
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