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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:45:59 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:45:59 +0000 |
commit | 19fcec84d8d7d21e796c7624e521b60d28ee21ed (patch) | |
tree | 42d26aa27d1e3f7c0b8bd3fd14e7d7082f5008dc /src/boost/libs/graph/example/last-mod-time.cpp | |
parent | Initial commit. (diff) | |
download | ceph-upstream.tar.xz ceph-upstream.zip |
Adding upstream version 16.2.11+ds.upstream/16.2.11+dsupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/boost/libs/graph/example/last-mod-time.cpp')
-rw-r--r-- | src/boost/libs/graph/example/last-mod-time.cpp | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/src/boost/libs/graph/example/last-mod-time.cpp b/src/boost/libs/graph/example/last-mod-time.cpp new file mode 100644 index 000000000..7d8676ebd --- /dev/null +++ b/src/boost/libs/graph/example/last-mod-time.cpp @@ -0,0 +1,113 @@ +//======================================================================= +// Copyright 2001 Jeremy G. Siek, Andrew Lumsdaine, Lie-Quan Lee, +// +// 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) +//======================================================================= + +/* + IMPORTANT: + ~~~~~~~~~~ + + This example appears to be broken and crashes at runtime, see + https://github.com/boostorg/graph/issues/148 + +*/ + +#ifdef _MSC_VER +#define _CRT_SECURE_NO_WARNINGS +#endif + +#include <boost/config.hpp> +#include <iostream> +#include <fstream> +#include <string> +#include <ctime> +#ifdef BOOST_HAS_UNISTD_H +#include <unistd.h> +#endif +#include <sys/stat.h> +#include <boost/graph/adjacency_list.hpp> + +using namespace boost; + +template < typename Graph, typename VertexNamePropertyMap > +void read_graph_file(std::istream& graph_in, std::istream& name_in, Graph& g, + VertexNamePropertyMap name_map) +{ + typedef typename graph_traits< Graph >::vertices_size_type size_type; + size_type n_vertices; + typename graph_traits< Graph >::vertex_descriptor u; + typename property_traits< VertexNamePropertyMap >::value_type name; + + graph_in >> n_vertices; // read in number of vertices + for (size_type i = 0; i < n_vertices; ++i) + { // Add n vertices to the graph + u = add_vertex(g); + name_in >> name; + put(name_map, u, name); // ** Attach name property to vertex u ** + } + size_type src, targ; + while (graph_in >> src) // Read in edges + if (graph_in >> targ) + add_edge(src, targ, g); // add an edge to the graph + else + break; +} + +int main(int argc, const char** argv) +{ + typedef adjacency_list< listS, // Store out-edges of each vertex in a + // std::list + vecS, // Store vertex set in a std::vector + directedS, // The graph is directed + property< vertex_name_t, std::string > // Add a vertex property + > + graph_type; + + graph_type g; // use default constructor to create empty graph + std::ifstream file_in(argc >= 2 ? argv[1] : "makefile-dependencies.dat"), + name_in(argc >= 2 ? argv[1] : "makefile-target-names.dat"); + if (!file_in) + { + std::cerr << "** Error: could not open file makefile-target-names.dat" + << std::endl; + exit(-1); + } + // Obtain internal property map from the graph + property_map< graph_type, vertex_name_t >::type name_map + = get(vertex_name, g); + read_graph_file(file_in, name_in, g, name_map); + + // Create storage for last modified times + std::vector< time_t > last_mod_vec(num_vertices(g)); + // Create nickname for the property map type + typedef iterator_property_map< std::vector< time_t >::iterator, + property_map< graph_type, vertex_index_t >::type, time_t, time_t& > + iter_map_t; + // Create last modified time property map + iter_map_t mod_time_map(last_mod_vec.begin(), get(vertex_index, g)); + + property_map< graph_type, vertex_name_t >::type name = get(vertex_name, g); + struct stat stat_buf; + graph_traits< graph_type >::vertex_descriptor u; + typedef graph_traits< graph_type >::vertex_iterator vertex_iter_t; + std::pair< vertex_iter_t, vertex_iter_t > p; + for (p = vertices(g); p.first != p.second; ++p.first) + { + u = *p.first; + if (stat(name[u].c_str(), &stat_buf) != 0) + std::cerr << "error in stat() for file " << name[u] << std::endl; + put(mod_time_map, u, stat_buf.st_mtime); + } + + for (p = vertices(g); p.first != p.second; ++p.first) + { + std::cout << name[*p.first] << " was last modified at " + << ctime(&mod_time_map[*p.first]); + } + assert(num_vertices(g) == 15); + assert(num_edges(g) == 19); + return 0; +} |