From 91704a78531bec2e3eea3ddf90eaedb28e1d696d Mon Sep 17 00:00:00 2001
From: Clifford Wolf <clifford@clifford.at>
Date: Tue, 11 Mar 2014 14:24:24 +0100
Subject: Merged a few fixes for non-posix systems from
 github.com/Siesh1oo/yosys (see https://github.com/cliffordwolf/yosys/pull/28)

---
 kernel/driver.cc   |  1 +
 kernel/log.h       | 16 ++++++++++++++++
 kernel/register.cc |  1 +
 3 files changed, 18 insertions(+)

(limited to 'kernel')

diff --git a/kernel/driver.cc b/kernel/driver.cc
index 00a61ec0..ce95cad4 100644
--- a/kernel/driver.cc
+++ b/kernel/driver.cc
@@ -24,6 +24,7 @@
 #include <unistd.h>
 #include <libgen.h>
 #include <dlfcn.h>
+#include <errno.h>
 
 #include <algorithm>
 
diff --git a/kernel/log.h b/kernel/log.h
index c4c03352..fbc3c1c3 100644
--- a/kernel/log.h
+++ b/kernel/log.h
@@ -23,6 +23,8 @@
 #include "kernel/rtlil.h"
 #include <stdio.h>
 #include <time.h>
+#include <sys/time.h>
+#include <sys/resource.h>
 #include <vector>
 
 extern std::vector<FILE*> log_files;
@@ -65,9 +67,23 @@ struct PerformanceTimer
 	}
 
 	static int64_t query() {
+#if defined(_POSIX_TIMERS) && (_POSIX_TIMERS > 0)
 		struct timespec ts;
 		clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &ts);
 		return int64_t(ts.tv_sec)*1000000000 + ts.tv_nsec;
+#elif defined(RUSAGE_SELF)
+		struct rusage rusage;
+		int64_t t;
+		if (getrusage(RUSAGE_SELF, &rusage) == -1) {
+			log_cmd_error("getrusage failed!\n");
+			log_abort();
+		}
+		t = 1000000000ULL * (int64_t) rusage.ru_utime.tv_sec + (int64_t) rusage.ru_utime.tv_usec * 1000ULL;
+		t += 1000000000ULL * (int64_t) rusage.ru_stime.tv_sec + (int64_t) rusage.ru_stime.tv_usec * 1000ULL;
+		return t;
+#else
+	#error Dont know how to measure per-process CPU time. Need alternative method (times()/clocks()/gettimeofday()?).
+#endif
 	}
 
 	void reset() {
diff --git a/kernel/register.cc b/kernel/register.cc
index ee14ffba..ab5cba11 100644
--- a/kernel/register.cc
+++ b/kernel/register.cc
@@ -23,6 +23,7 @@
 #include <string.h>
 #include <stdlib.h>
 #include <stdio.h>
+#include <errno.h>
 
 using namespace REGISTER_INTERN;
 #define MAX_REG_COUNT 1000
-- 
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