Compare commits
38 Commits
@ -0,0 +1,18 @@
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{
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"configurations": [
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{
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"name": "windows-gcc-x86",
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"includePath": [
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"${workspaceFolder}/**"
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],
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"compilerPath": "C:/Program Files/MinGW/bin/gcc.exe",
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"cStandard": "${default}",
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"cppStandard": "${default}",
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"intelliSenseMode": "windows-gcc-x86",
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"compilerArgs": [
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""
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]
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}
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],
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"version": 4
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}
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@ -0,0 +1,140 @@
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cc_defaults {
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name: "afl-defaults",
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cflags: [
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"-funroll-loops",
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"-Wno-pointer-sign",
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"-Wno-pointer-arith",
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"-Wno-sign-compare",
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"-Wno-unused-parameter",
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"-Wno-unused-function",
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"-Wno-format",
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"-Wno-user-defined-warnings",
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"-DUSE_TRACE_PC=1",
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"-DBIN_PATH=\"out/host/linux-x86/bin\"",
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"-DDOC_PATH=\"out/host/linux-x86/shared/doc/afl\"",
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"-D__USE_GNU",
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],
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}
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cc_binary {
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name: "afl-fuzz",
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static_executable: true,
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host_supported: true,
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defaults: [
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"afl-defaults",
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],
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srcs: [
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"afl-fuzz.c",
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],
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}
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cc_binary {
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name: "afl-showmap",
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static_executable: true,
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host_supported: true,
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defaults: [
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"afl-defaults",
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],
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srcs: [
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"afl-showmap.c",
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],
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}
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cc_binary {
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name: "afl-tmin",
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static_executable: true,
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host_supported: true,
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defaults: [
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"afl-defaults",
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],
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srcs: [
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"afl-tmin.c",
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],
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}
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cc_binary {
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name: "afl-analyze",
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static_executable: true,
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host_supported: true,
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defaults: [
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"afl-defaults",
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],
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srcs: [
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"afl-analyze.c",
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],
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}
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cc_binary {
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name: "afl-gotcpu",
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static_executable: true,
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host_supported: true,
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defaults: [
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"afl-defaults",
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],
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srcs: [
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"afl-gotcpu.c",
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],
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}
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cc_binary_host {
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name: "afl-clang-fast",
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static_executable: true,
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defaults: [
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"afl-defaults",
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],
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cflags: [
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"-D__ANDROID__",
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"-DAFL_PATH=\"out/host/linux-x86/lib64\"",
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],
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srcs: [
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"llvm_mode/afl-clang-fast.c",
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],
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}
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cc_binary_host {
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name: "afl-clang-fast++",
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static_executable: true,
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defaults: [
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"afl-defaults",
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],
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cflags: [
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"-D__ANDROID__",
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"-DAFL_PATH=\"out/host/linux-x86/lib64\"",
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],
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srcs: [
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"llvm_mode/afl-clang-fast.c",
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],
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}
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cc_library_static {
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name: "afl-llvm-rt",
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compile_multilib: "both",
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vendor_available: true,
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host_supported: true,
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recovery_available: true,
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defaults: [
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"afl-defaults",
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],
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srcs: [
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"llvm_mode/afl-llvm-rt.o.c",
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],
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}
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@ -0,0 +1,260 @@
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/*
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Copyright 2015 Google LLC All rights reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at:
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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/*
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american fuzzy lop - free CPU gizmo
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-----------------------------------
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Written and maintained by Michal Zalewski <lcamtuf@google.com>
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This tool provides a fairly accurate measurement of CPU preemption rate.
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It is meant to complement the quick-and-dirty load average widget shown
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in the afl-fuzz UI. See docs/parallel_fuzzing.txt for more info.
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For some work loads, the tool may actually suggest running more instances
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than you have CPU cores. This can happen if the tested program is spending
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a portion of its run time waiting for I/O, rather than being 100%
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CPU-bound.
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The idea for the getrusage()-based approach comes from Jakub Wilk.
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*/
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#define AFL_MAIN
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#include "android-ashmem.h"
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#define _GNU_SOURCE
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <string.h>
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#include <sched.h>
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#include <sys/time.h>
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#include <sys/times.h>
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#include <sys/resource.h>
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#include <sys/wait.h>
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#include "types.h"
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#include "debug.h"
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#ifdef __linux__
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# define HAVE_AFFINITY 1
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#endif /* __linux__ */
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/* Get unix time in microseconds. */
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static u64 get_cur_time_us(void) {
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struct timeval tv;
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struct timezone tz;
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gettimeofday(&tv, &tz);
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return (tv.tv_sec * 1000000ULL) + tv.tv_usec;
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}
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/* Get CPU usage in microseconds. */
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static u64 get_cpu_usage_us(void) {
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struct rusage u;
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getrusage(RUSAGE_SELF, &u);
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return (u.ru_utime.tv_sec * 1000000ULL) + u.ru_utime.tv_usec +
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(u.ru_stime.tv_sec * 1000000ULL) + u.ru_stime.tv_usec;
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}
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/* Measure preemption rate. */
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static u32 measure_preemption(u32 target_ms) {
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static volatile u32 v1, v2;
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u64 st_t, en_t, st_c, en_c, real_delta, slice_delta;
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s32 loop_repeats = 0;
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st_t = get_cur_time_us();
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st_c = get_cpu_usage_us();
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repeat_loop:
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v1 = CTEST_BUSY_CYCLES;
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while (v1--) v2++;
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sched_yield();
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en_t = get_cur_time_us();
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if (en_t - st_t < target_ms * 1000) {
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loop_repeats++;
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goto repeat_loop;
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}
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/* Let's see what percentage of this time we actually had a chance to
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run, and how much time was spent in the penalty box. */
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en_c = get_cpu_usage_us();
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real_delta = (en_t - st_t) / 1000;
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slice_delta = (en_c - st_c) / 1000;
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return real_delta * 100 / slice_delta;
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}
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/* Do the benchmark thing. */
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int main(int argc, char** argv) {
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#ifdef HAVE_AFFINITY
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u32 cpu_cnt = sysconf(_SC_NPROCESSORS_ONLN),
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idle_cpus = 0, maybe_cpus = 0, i;
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SAYF(cCYA "afl-gotcpu " cBRI VERSION cRST " by <lcamtuf@google.com>\n");
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ACTF("Measuring per-core preemption rate (this will take %0.02f sec)...",
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((double)CTEST_CORE_TRG_MS) / 1000);
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for (i = 0; i < cpu_cnt; i++) {
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s32 fr = fork();
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if (fr < 0) PFATAL("fork failed");
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if (!fr) {
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cpu_set_t c;
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u32 util_perc;
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CPU_ZERO(&c);
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CPU_SET(i, &c);
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if (sched_setaffinity(0, sizeof(c), &c))
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PFATAL("sched_setaffinity failed for cpu %d", i);
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util_perc = measure_preemption(CTEST_CORE_TRG_MS);
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if (util_perc < 110) {
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SAYF(" Core #%u: " cLGN "AVAILABLE " cRST "(%u%%)\n", i, util_perc);
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exit(0);
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} else if (util_perc < 250) {
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SAYF(" Core #%u: " cYEL "CAUTION " cRST "(%u%%)\n", i, util_perc);
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exit(1);
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}
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SAYF(" Core #%u: " cLRD "OVERBOOKED " cRST "(%u%%)\n" cRST, i,
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util_perc);
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exit(2);
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}
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}
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for (i = 0; i < cpu_cnt; i++) {
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int ret;
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if (waitpid(-1, &ret, 0) < 0) PFATAL("waitpid failed");
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if (WEXITSTATUS(ret) == 0) idle_cpus++;
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if (WEXITSTATUS(ret) <= 1) maybe_cpus++;
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}
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SAYF(cGRA "\n>>> ");
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if (idle_cpus) {
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if (maybe_cpus == idle_cpus) {
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SAYF(cLGN "PASS: " cRST "You can run more processes on %u core%s.",
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idle_cpus, idle_cpus > 1 ? "s" : "");
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} else {
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SAYF(cLGN "PASS: " cRST "You can run more processes on %u to %u core%s.",
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idle_cpus, maybe_cpus, maybe_cpus > 1 ? "s" : "");
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}
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SAYF(cGRA " <<<" cRST "\n\n");
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return 0;
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}
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if (maybe_cpus) {
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SAYF(cYEL "CAUTION: " cRST "You may still have %u core%s available.",
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maybe_cpus, maybe_cpus > 1 ? "s" : "");
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SAYF(cGRA " <<<" cRST "\n\n");
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return 1;
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}
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SAYF(cLRD "FAIL: " cRST "All cores are overbooked.");
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SAYF(cGRA " <<<" cRST "\n\n");
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return 2;
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#else
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u32 util_perc;
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SAYF(cCYA "afl-gotcpu " cBRI VERSION cRST " by <lcamtuf@google.com>\n");
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/* Run a busy loop for CTEST_TARGET_MS. */
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ACTF("Measuring gross preemption rate (this will take %0.02f sec)...",
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((double)CTEST_TARGET_MS) / 1000);
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util_perc = measure_preemption(CTEST_TARGET_MS);
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/* Deliver the final verdict. */
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SAYF(cGRA "\n>>> ");
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if (util_perc < 105) {
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SAYF(cLGN "PASS: " cRST "You can probably run additional processes.");
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} else if (util_perc < 130) {
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SAYF(cYEL "CAUTION: " cRST "Your CPU may be somewhat overbooked (%u%%).",
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util_perc);
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} else {
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SAYF(cLRD "FAIL: " cRST "Your CPU is overbooked (%u%%).", util_perc);
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}
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SAYF(cGRA " <<<" cRST "\n\n");
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return (util_perc > 105) + (util_perc > 130);
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#endif /* ^HAVE_AFFINITY */
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}
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Before Width: | Height: | Size: 581 KiB After Width: | Height: | Size: 581 KiB |
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Before Width: | Height: | Size: 996 B After Width: | Height: | Size: 996 B |