netperf: use Genode specific alarm timer

Fixes #1021

ports/src/app/netperf/netlib.patch

@@ -13,6 +13,20 @@ Index: src/netlib.c
    return(temp_cpus);
  
  }
+@@ -1095,8 +1095,13 @@
+ 
+ #endif /* WIN32 */
+ 
++#ifdef GENODE_BUILD
++void
++start_do_not_use_timer(int time)
++#else
+ void
+ start_timer(int time)
++#endif
+ {
+ 
+ #ifdef WIN32
 @@ -3059,7 +3063,9 @@
  	      (which == SEND_BUFFER) ? "SO_SNDBUF" : "SO_RCVBUF",
  	      errno);

ports/src/app/netperf/target.inc

@@ -10,11 +10,14 @@ SRC_C   = netserver.c netlib.c netsh.c nettest_bsd.c dscp.c
 SRC_C  += nettest_omni.c net_uuid.c
 SRC_C  += netsys_none.c netsec_none.c netdrv_none.c netrt_none.c netslot_none.c netcpu_none.c
 
+SRC_CC += timer.cc
+
 INC_DIR += $(PRG_DIR)/..
 CC_OPT  += -DHAVE_CONFIG_H -DGENODE_BUILD
 
 CC_WARN = -Wall -Wno-unused
 
 vpath %.c $(CONTRIB_DIR)/src
+vpath timer.cc $(PRG_DIR)/..
 
 # vi: set ft=make :

ports/src/app/netperf/timer.cc

@@ -0,0 +1,89 @@
+/*
+ * \brief  Timeout handling for netperf, based on test/alarm
+ * \author Alexander Boettcher
+ * \date   2014-01-10
+ */
+
+/*
+ * Copyright (C) 2014-2014 Genode Labs GmbH
+ *
+ * This file is part of the Genode OS framework, which is distributed
+ * under the terms of the GNU General Public License version 2.
+ */
+
+#include <os/alarm.h>
+#include <base/thread.h>
+#include <timer_session/connection.h>
+
+
+using namespace Genode;
+
+class Alarm_thread : Thread<4096>, public Alarm_scheduler
+{
+	private:
+
+		Timer::Connection _timer;
+		Alarm::Time       _curr_time;   /* jiffies value */
+
+		enum { TIMER_GRANULARITY_MSEC = 10 };
+
+		/**
+		 * Thread entry function
+		 */
+		void entry()
+		{
+			while (true) {
+				_timer.msleep(TIMER_GRANULARITY_MSEC);
+				Alarm_scheduler::handle(_curr_time);
+				_curr_time += TIMER_GRANULARITY_MSEC;
+			}
+		}
+
+	public:
+
+		/**
+		 * Constructor
+		 */
+		Alarm_thread(): Thread("netperf_alarm"), _curr_time(0) { start(); }
+
+		Alarm::Time curr_time() { return _curr_time; }
+};
+
+
+/* defined in "ports/contrib/netperf/src/netlib.c" */
+extern "C" int times_up;
+
+
+class One_shot : public Alarm
+{
+	private:
+
+		Alarm_scheduler *_scheduler;
+
+	public:
+
+		One_shot(Alarm_scheduler *scheduler) : _scheduler(scheduler) { }
+
+		void set_timeout(Time absolute_timeout)
+		{
+			_scheduler->schedule_absolute(this, absolute_timeout);
+		}
+
+	protected:
+
+		bool on_alarm()
+		{
+			times_up = 1;
+			return false;
+		}
+};
+
+
+extern "C" void
+start_timer(int time)
+{
+	static Alarm_thread alarm_thread;
+	static One_shot oneshot(&alarm_thread);
+
+	oneshot.set_timeout(alarm_thread.curr_time() + time * 1000);
+}

ports/src/app/netperf/timer.patch

@@ -1,14 +0,0 @@
---- src/netlib.h	(revision 644)
-+++ src/netlib.h	(working copy)
-@@ -536,7 +536,11 @@
- extern  void    dump_request();
- extern  void    dump_addrinfo(FILE *dumploc, struct addrinfo *info,
- 			      char *host, char *port, int family);
-+#ifdef GENODE_BUILD
-+static inline  void    start_timer(int time) { }
-+#else
- extern  void    start_timer(int time);
-+#endif
- extern  void    stop_timer();
- extern  void    cpu_start(int measure_cpu);
- extern  void    cpu_stop(int measure_cpu, float *elapsed);