diff --git a/projects/roctracer/test/directed/trace_buffer.cpp b/projects/roctracer/test/directed/trace_buffer.cpp new file mode 100644 index 0000000000..4adbdb72f5 --- /dev/null +++ b/projects/roctracer/test/directed/trace_buffer.cpp @@ -0,0 +1,79 @@ +/* Copyright (c) 2022 Advanced Micro Devices, Inc. + + Permission is hereby granted, free of charge, to any person obtaining a copy + of this software and associated documentation files (the "Software"), to deal + in the Software without restriction, including without limitation the rights + to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + copies of the Software, and to permit persons to whom the Software is + furnished to do so, subject to the following conditions: + + The above copyright notice and this permission notice shall be included in + all copies or substantial portions of the Software. + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + THE SOFTWARE. */ + +#include "trace_buffer.h" + +#include +#include +#include +#include +#include +#include +#include +#include + + +struct TraceEntry { + std::atomic valid; +}; + +TRACE_BUFFER_INSTANTIATE(); + +namespace { + +std::ifstream cpuinfo("/proc/cpuinfo"); +const std::size_t num_cpu_cores = + std::count(std::istream_iterator(cpuinfo), std::istream_iterator(), + std::string("processor")); + +constexpr std::size_t num_iterations = 1000; +constexpr std::size_t min_num_threads = 10; +constexpr std::size_t max_num_threads = 50; + +} // namespace + +int main() { + const std::size_t num_threads = std::clamp(num_cpu_cores, min_num_threads, max_num_threads); + std::vector threads(num_threads); + + std::atomic flush_count(0); // Count the number of times the flush callback is called. + roctracer::TraceBuffer trace_buffer("Test", 10, + [&flush_count](auto* entry) { ++flush_count; }); + + // Start the worker threads. Each thread will request 'num_iterations' entries from the + // 'trace_buffer', then exit. + for (auto&& thread : threads) { + thread = std::thread([&trace_buffer]() { + for (std::size_t j = 0; j < num_iterations; ++j) { + auto* entry = trace_buffer.GetEntry(); + entry->valid.store(roctracer::TRACE_ENTRY_COMPLETE, std::memory_order_release); + } + }); + } + + // Wait for all the threads to complete, then flush the trace buffer. + for (auto&& thread : threads) thread.join(); + trace_buffer.Flush(); + + std::cout << "number of records flushed = " << flush_count << std::endl; + if (flush_count != num_iterations * threads.size()) abort(); + + return EXIT_SUCCESS; +} \ No newline at end of file