Files
DarkflameServer/tests/dWebTests/OnceCacheTests.cpp
Aaron Kimbrell 17689cd663 feat: build a zone's 3D data on worker threads
Opening a zone the first time built its terrain, scene objects and manifests
and ran ImageMagick on the web thread, stalling the dashboard for seconds.

- Workers: the shared pool plus Workers::Reply (answer at once when built,
  else from a worker via Web::Defer).
- terrain_chunks/terrain_layers/scene/paths/scenery/flairs (world3d, property
  and showcase routes) and terrain textures go through it; results are built
  once in OnceCaches, the .raw is read once per zone for chunks, layers and
  flairs, deflated bodies are cached thread-safely.
- ImageMagick conversions are deduplicated and written under a temporary name.
- Workers don't query the CDClient, read settings or call mongoose: ZoneTable,
  render components, flairs, object names, LOT kinds and terrain texture names
  are read at startup; client_location is read once; base64 is plain C++.
- Logger writes one line at a time (mutex; localtime's buffer is shared).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-09-28 22:30:51 -05:00

57 lines
1.5 KiB
C++

#include <gtest/gtest.h>
#include <atomic>
#include <chrono>
#include <stdexcept>
#include <string>
#include <thread>
#include <vector>
#include "OnceCache.h"
TEST(OnceCacheTests, BuildsOnceForManyThreads) {
OnceCache<int, std::string> cache;
std::atomic<int> builds{};
std::vector<std::thread> threads;
std::vector<std::string> results(16);
for (size_t i = 0; i < results.size(); i++) {
threads.emplace_back([&, i] {
results[i] = cache.Get(1, [&] {
builds++;
std::this_thread::sleep_for(std::chrono::milliseconds(20));
return std::string("built");
});
});
}
for (auto& thread : threads) thread.join();
EXPECT_EQ(builds.load(), 1);
for (const auto& result : results) EXPECT_EQ(result, "built");
EXPECT_TRUE(cache.Ready(1));
EXPECT_FALSE(cache.Ready(2));
}
TEST(OnceCacheTests, NotReadyWhileBuilding) {
OnceCache<int, int> cache;
std::atomic<bool> release{}, started{};
std::thread builder([&] {
cache.Get(1, [&] {
started = true;
while (!release) std::this_thread::sleep_for(std::chrono::milliseconds(1));
return 5;
});
});
while (!started) std::this_thread::sleep_for(std::chrono::milliseconds(1));
EXPECT_FALSE(cache.Ready(1));
release = true;
builder.join();
EXPECT_TRUE(cache.Ready(1));
EXPECT_EQ(cache.Get(1, [] { return 0; }), 5);
}
TEST(OnceCacheTests, FailedBuildIsTriedAgain) {
OnceCache<int, int> cache;
EXPECT_THROW(cache.Get(1, []() -> int { throw std::runtime_error("no"); }), std::runtime_error);
EXPECT_FALSE(cache.Ready(1));
EXPECT_EQ(cache.Get(1, [] { return 3; }), 3);
}