Clean up time handling code

base/str.hh:
    this should really be inline
base/time.cc:
base/time.hh:
    clean up how the time class works.  Export only one, and let
    people calculate their own elapsed times, etc.
sim/main.cc:
    sim/sim_time.X -> base/time.X

--HG--
rename : sim/sim_time.cc => base/time.cc
rename : sim/sim_time.hh => base/time.hh
extra : convert_revision : f3888fe3a1fdd1022084c282b58407c631a6d9a0

3 files changed, 196 insertions, 1 deletions

diff --git a/base/str.hh b/base/str.hh
index 29d2c03db..6c3453b8b 100644
--- a/base/str.hh
+++ b/base/str.hh
@@ -98,7 +98,7 @@ template <class T> bool
 to_number(const std::string &value, T &retval);
 
 template <class T>
-std::string
+inline std::string
 to_string(const T& value)
 {
     std::stringstream str;
diff --git a/base/time.cc b/base/time.cc
new file mode 100644
index 000000000..d2e8f60a5
--- /dev/null
+++ b/base/time.cc
@@ -0,0 +1,130 @@
+/*
+ * Copyright (c) 2003 The Regents of The University of Michigan
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met: redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer;
+ * redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution;
+ * neither the name of the copyright holders nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <sys/types.h>
+#include <sys/time.h>
+#include <time.h>
+#include <iostream>
+#include <string>
+
+#include "base/time.hh"
+
+using namespace std;
+
+struct _timeval
+{
+    timeval tv;
+};
+
+double
+convert(const timeval &tv)
+{
+    return (double)tv.tv_sec + (double)tv.tv_usec / 1000000.0;
+}
+
+Time::Time()
+{
+    time = new _timeval;
+    ::gettimeofday(&time->tv, NULL);
+}
+
+Time::Time(const timeval &val)
+{
+    time = new _timeval;
+    set(val);
+}
+
+Time::Time(const Time &val)
+{
+    time = new _timeval;
+    set(val.get());
+}
+
+Time::~Time()
+{
+    delete time;
+}
+
+const timeval &
+Time::get() const
+{
+    return time->tv;
+}
+
+void
+Time::set(const timeval &tv)
+{
+    memcpy(&time->tv, &tv, sizeof(timeval));
+}
+
+void
+Time::reset()
+{
+    ::gettimeofday(&time->tv, NULL);
+}
+
+double
+Time::operator()() const
+{
+    return convert(get());
+}
+
+string
+Time::date(string format) const
+{
+    const timeval &tv = get();
+    time_t sec = tv.tv_sec;
+    char buf[256];
+
+    if (format.empty()) {
+        ctime_r(&sec, buf);
+        buf[24] = '\0';
+        return buf;
+    }
+
+    struct tm *tm = localtime(&sec);
+    strftime(buf, sizeof(buf), format.c_str(), tm);
+    return buf;
+}
+
+ostream &
+operator<<(ostream &out, const Time &start)
+{
+    out << start.date();
+    return out;
+}
+
+Time
+operator-(const Time &l, const Time &r)
+{
+    timeval tv;
+    timersub(&l.get(), &r.get(), &tv);
+    return tv;
+}
+
+const Time Time::start;
diff --git a/base/time.hh b/base/time.hh
new file mode 100644
index 000000000..64da52e1d
--- /dev/null
+++ b/base/time.hh
@@ -0,0 +1,65 @@
+/*
+ * Copyright (c) 2003 The Regents of The University of Michigan
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met: redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer;
+ * redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution;
+ * neither the name of the copyright holders nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __SIM_TIME_HH__
+#define __SIM_TIME_HH__
+
+#include <sys/time.h>
+
+#include <iosfwd>
+#include <string>
+
+struct _timeval;
+
+class Time
+{
+  protected:
+    mutable _timeval *time;
+
+  public:
+    Time();
+    Time(const timeval &val);
+    Time(const Time &val);
+    ~Time();
+
+    const timeval &get() const;
+    void set(const timeval &val);
+
+    void reset();
+    double operator()() const;
+    std::string date(std::string format = "") const;
+
+  public:
+    static const Time start;
+};
+
+Time operator-(const Time &l, const Time &r);
+
+std::ostream &operator<<(std::ostream &out, const Time &time);
+
+#endif // __SIM_TIME_HH__