cregit-Linux how code gets into the kernel

Release 4.10 scripts/gcc-plugins/cyc_complexity_plugin.c

/*
 * Copyright 2011-2016 by Emese Revfy <re.emese@gmail.com>
 * Licensed under the GPL v2, or (at your option) v3
 *
 * Homepage:
 * https://github.com/ephox-gcc-plugins/cyclomatic_complexity
 *
 * http://en.wikipedia.org/wiki/Cyclomatic_complexity
 * The complexity M is then defined as:
 * M = E - N + 2P
 * where
 *
 *  E = the number of edges of the graph
 *  N = the number of nodes of the graph
 *  P = the number of connected components (exit nodes).
 *
 * Usage (4.5 - 5):
 * $ make clean; make run
 */

#include "gcc-common.h"


__visible int plugin_is_GPL_compatible;


static struct plugin_info cyc_complexity_plugin_info = {
	.version	= "20160225",
	.help		= "Cyclomatic Complexity\n",
};


static unsigned int cyc_complexity_execute(void) { int complexity; expanded_location xloc; /* M = E - N + 2P */ complexity = n_edges_for_fn(cfun) - n_basic_blocks_for_fn(cfun) + 2; xloc = expand_location(DECL_SOURCE_LOCATION(current_function_decl)); fprintf(stderr, "Cyclomatic Complexity %d %s:%s\n", complexity, xloc.file, DECL_NAME_POINTER(current_function_decl)); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
emese revfyemese revfy61100.00%1100.00%
Total61100.00%1100.00%

#define PASS_NAME cyc_complexity #define NO_GATE #define TODO_FLAGS_FINISH TODO_dump_func #include "gcc-generate-gimple-pass.h"
__visible int plugin_init(struct plugin_name_args *plugin_info, struct plugin_gcc_version *version) { const char * const plugin_name = plugin_info->base_name; struct register_pass_info cyc_complexity_pass_info; cyc_complexity_pass_info.pass = make_cyc_complexity_pass(); cyc_complexity_pass_info.reference_pass_name = "ssa"; cyc_complexity_pass_info.ref_pass_instance_number = 1; cyc_complexity_pass_info.pos_op = PASS_POS_INSERT_AFTER; if (!plugin_default_version_check(version, &gcc_version)) { error(G_("incompatible gcc/plugin versions")); return 1; } register_callback(plugin_name, PLUGIN_INFO, NULL, &cyc_complexity_plugin_info); register_callback(plugin_name, PLUGIN_PASS_MANAGER_SETUP, NULL, &cyc_complexity_pass_info); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
emese revfyemese revfy10599.06%150.00%
kees cookkees cook10.94%150.00%
Total106100.00%2100.00%


Overall Contributors

PersonTokensPropCommitsCommitProp
emese revfyemese revfy20499.03%150.00%
kees cookkees cook20.97%150.00%
Total206100.00%2100.00%
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.