From af72911f2fe6b8114564614d2db17a449f8c4af0 Mon Sep 17 00:00:00 2001
From: Michael Neumann <mneumann@ntecs.de>
Date: Mon, 12 Oct 2020 22:41:49 +0200
Subject: [PATCH] Add support for DragonFly BSD (#1058)
Without this commit, compilation fails on DragonFly with the following message:
```
/home/mneumann/Dev/benchmark.old/src/sysinfo.cc:446:2: error: #warning "HOST_NAME_MAX not defined. using 64" [-Werror=cpp]
^~~~~~~
```
Also note that the sysctl is actually `hw.tsc_frequency` on DragonFly:
```
$ sysctl hw.tsc_frequency
hw.tsc_frequency: 3498984022
```
Tested on:
```
$ uname -a
DragonFly box.localnet 5.9-DEVELOPMENT DragonFly v5.9.0.742.g4b29dd-DEVELOPMENT #5: Tue Aug 18 00:21:31 CEST 2020
```
---
src/internal_macros.h | 2 ++
src/sysinfo.cc | 12 ++++++++----
src/timers.cc | 3 ++-
3 files changed, 12 insertions(+), 5 deletions(-)
diff --git a/src/internal_macros.h b/src/internal_macros.h
index 6adf00d0..889b3537 100644
--- a/src/internal_macros.h
+++ b/src/internal_macros.h
@@ -58,6 +58,8 @@
#define BENCHMARK_OS_NETBSD 1
#elif defined(__OpenBSD__)
#define BENCHMARK_OS_OPENBSD 1
+#elif defined(__DragonFly__)
+ #define BENCHMARK_OS_DRAGONFLY 1
#elif defined(__linux__)
#define BENCHMARK_OS_LINUX 1
#elif defined(__native_client__)
diff --git a/src/sysinfo.cc b/src/sysinfo.cc
index 8bab9320..b30b4f83 100644
--- a/src/sysinfo.cc
+++ b/src/sysinfo.cc
@@ -29,7 +29,8 @@
#include <sys/types.h> // this header must be included before 'sys/sysctl.h' to avoid compilation error on FreeBSD
#include <unistd.h>
#if defined BENCHMARK_OS_FREEBSD || defined BENCHMARK_OS_MACOSX || \
- defined BENCHMARK_OS_NETBSD || defined BENCHMARK_OS_OPENBSD
+ defined BENCHMARK_OS_NETBSD || defined BENCHMARK_OS_OPENBSD || \
+ defined BENCHMARK_OS_DRAGONFLY
#define BENCHMARK_HAS_SYSCTL
#include <sys/sysctl.h>
#endif
@@ -607,6 +608,8 @@ double GetCPUCyclesPerSecond() {
"machdep.tsc_freq";
#elif defined BENCHMARK_OS_OPENBSD
"hw.cpuspeed";
+#elif defined BENCHMARK_OS_DRAGONFLY
+ "hw.tsc_frequency";
#else
"hw.cpufrequency";
#endif
@@ -671,9 +674,10 @@ double GetCPUCyclesPerSecond() {
}
std::vector<double> GetLoadAvg() {
-#if (defined BENCHMARK_OS_FREEBSD || defined(BENCHMARK_OS_LINUX) || \
- defined BENCHMARK_OS_MACOSX || defined BENCHMARK_OS_NETBSD || \
- defined BENCHMARK_OS_OPENBSD) && !defined(__ANDROID__)
+#if (defined BENCHMARK_OS_FREEBSD || defined(BENCHMARK_OS_LINUX) || \
+ defined BENCHMARK_OS_MACOSX || defined BENCHMARK_OS_NETBSD || \
+ defined BENCHMARK_OS_OPENBSD || defined BENCHMARK_OS_DRAGONFLY) && \
+ !defined(__ANDROID__)
constexpr int kMaxSamples = 3;
std::vector<double> res(kMaxSamples, 0.0);
const int nelem = getloadavg(res.data(), kMaxSamples);
diff --git a/src/timers.cc b/src/timers.cc
index 4f76eddc..1d3ab9a3 100644
--- a/src/timers.cc
+++ b/src/timers.cc
@@ -28,7 +28,8 @@
#include <sys/time.h>
#include <sys/types.h> // this header must be included before 'sys/sysctl.h' to avoid compilation error on FreeBSD
#include <unistd.h>
-#if defined BENCHMARK_OS_FREEBSD || defined BENCHMARK_OS_MACOSX
+#if defined BENCHMARK_OS_FREEBSD || defined BENCHMARK_OS_DRAGONFLY || \
+ defined BENCHMARK_OS_MACOSX
#include <sys/sysctl.h>
#endif
#if defined(BENCHMARK_OS_MACOSX)