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author | 2024-04-22 08:04:58 +1000 | |
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committer | 2024-04-22 08:04:58 +1000 | |
commit | 184292b730f4236bd4840e780fdad97ee060ec84 (patch) | |
tree | 67902161a465fe92aec78ca502de07092b8cde0f /3rdparty/asio/src/examples/cpp03/spawn/parallel_grep.cpp | |
parent | 24154bc1f00790f344120b3a85175d6f616c5ad0 (diff) |
3rdparty/asio: Updated to 1.30.2
Diffstat (limited to '3rdparty/asio/src/examples/cpp03/spawn/parallel_grep.cpp')
-rw-r--r-- | 3rdparty/asio/src/examples/cpp03/spawn/parallel_grep.cpp | 89 |
1 files changed, 0 insertions, 89 deletions
diff --git a/3rdparty/asio/src/examples/cpp03/spawn/parallel_grep.cpp b/3rdparty/asio/src/examples/cpp03/spawn/parallel_grep.cpp deleted file mode 100644 index 7fe1817a25e..00000000000 --- a/3rdparty/asio/src/examples/cpp03/spawn/parallel_grep.cpp +++ /dev/null @@ -1,89 +0,0 @@ -// -// parallel_grep.cpp -// ~~~~~~~~~~~~~~~~~ -// -// Copyright (c) 2003-2021 Christopher M. Kohlhoff (chris at kohlhoff dot com) -// -// Distributed under the Boost Software License, Version 1.0. (See accompanying -// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) -// - -#include <asio/dispatch.hpp> -#include <asio/post.hpp> -#include <asio/spawn.hpp> -#include <asio/strand.hpp> -#include <asio/thread_pool.hpp> -#include <boost/bind/bind.hpp> -#include <fstream> -#include <iostream> -#include <string> - -using asio::dispatch; -using asio::spawn; -using asio::strand; -using asio::thread_pool; -using asio::yield_context; - -void print_match(std::string input_file, std::string line) -{ - std::cout << input_file << ':' << line << std::endl; -} - -void search_file(std::string search_string, std::string input_file, - strand<thread_pool::executor_type> output_strand, yield_context yield) -{ - std::ifstream is(input_file.c_str()); - std::string line; - std::size_t line_num = 0; - while (std::getline(is, line)) - { - // If we find a match, send a message to the output. - if (line.find(search_string) != std::string::npos) - { - dispatch(output_strand, boost::bind(&print_match, input_file, line)); - } - - // Every so often we yield control to another coroutine. - if (++line_num % 10 == 0) - post(yield); - } -} - -int main(int argc, char* argv[]) -{ - try - { - if (argc < 2) - { - std::cerr << "Usage: parallel_grep <string> <files...>\n"; - return 1; - } - - // We use a fixed size pool of threads for reading the input files. The - // number of threads is automatically determined based on the number of - // CPUs available in the system. - thread_pool pool; - - // To prevent the output from being garbled, we use a strand to synchronise - // printing. - strand<thread_pool::executor_type> output_strand(pool.get_executor()); - - // Spawn a new coroutine for each file specified on the command line. - std::string search_string = argv[1]; - for (int argn = 2; argn < argc; ++argn) - { - std::string input_file = argv[argn]; - spawn(pool, boost::bind(&search_file, search_string, - input_file, output_strand, boost::placeholders::_1)); - } - - // Join the thread pool to wait for all the spawned tasks to complete. - pool.join(); - } - catch (std::exception& e) - { - std::cerr << "Exception: " << e.what() << "\n"; - } - - return 0; -} |