refactor: reorganize tests

1 files changed, 31 insertions, 0 deletions

diff --git a/test/memory_demo.cpp b/test/memory_demo.cpp
new file mode 100644
index 0000000..22c6b44
--- /dev/null
+++ b/test/memory_demo.cpp
@@ -0,0 +1,31 @@
+// a small demo target for the profiler: allocates and frees memory in slow
+// waves so the resident-memory graph has something to show
+#include <chrono>
+#include <cstdio>
+#include <thread>
+#include <vector>
+
+auto main() -> int
+{
+    std::vector<std::vector<char>> blocks;
+
+    for (int cycle = 0; cycle < 6; ++cycle)
+    {
+        // ramp up: grab ~40 MB over two seconds
+        for (int i = 0; i < 40; ++i)
+        {
+            blocks.emplace_back(1024 * 1024, static_cast<char>(i));
+            std::printf("cycle %d: allocated %zu MB\n", cycle, blocks.size());
+            std::fflush(stdout);
+            std::this_thread::sleep_for(std::chrono::milliseconds(50));
+        }
+
+        // hold for a moment, then release everything and start over
+        std::this_thread::sleep_for(std::chrono::seconds(1));
+        blocks.clear();
+        blocks.shrink_to_fit();
+        std::this_thread::sleep_for(std::chrono::seconds(1));
+    }
+
+    std::puts("done");
+}