Stop using omisc.h and move relevant functions to better places

while converting them to C++

base/intmath.hh:
    Add some functions that were previously defined elsewhere in C
base/misc.cc:
    Use the C++ version of memUsage, and sort #includes
sim/prog.cc:
    Stop using the old macro versions of various functions and use
    the new ones defined in intmath.hh
sim/sim_events.cc:
    Stop using the old C versions of various functions and use
    the new ones defined in hostinfo.hh

--HG--
extra : convert_revision : 15d1f24d2aff4254c745eea6070cb230dd37b8d2

base/hostinfo.cc

@@ -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.
+ */
+
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+#include <errno.h>
+#include <math.h>
+
+#include "host.hh"
+
+uint64_t
+procInfo(char *filename, char *target)
+{
+    int  done = 0;
+    char line[80];
+    char format[80];
+    uint64_t usage;
+
+    FILE *fp = fopen(filename, "r");
+
+    while (fp && !feof(fp) && !done) {
+        if (fgets(line, 80, fp)) {
+            if (strncmp(line, target, strlen(target)) == 0) {
+                sprintf(format, "%s %%ld", target);
+                sscanf(line, format, &usage);
+
+                fclose(fp);
+                return usage ;
+            }
+        }
+    }
+
+    if (fp)
+      fclose(fp);
+
+    return 0;
+}

base/hostinfo.hh

@@ -0,0 +1,39 @@
+/*
+ * 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 __HOSTINFO_HH__
+#define __HOSTINFO_HH__
+
+#include "host.hh"
+
+uint64_t procInfo(char *filename, char *target);
+
+inline uint64_t memUsage()
+{ return procInfo("/proc/self/status", "VmSize:"); }
+
+#endif // __HOSTINFO_HH__

base/intmath.hh

@@ -107,6 +107,29 @@ CeilPow2(T n)
     return (T)1 << CeilLog2(n);
 }
 
+template <class T>
+inline T
+DivCeil(T a, T b)
+{
+    return (a + b - 1) / b;
+}
+
+template <class T>
+inline T
+RoundUp(T val, T align)
+{
+    T mask = align - 1;
+    return (val + mask) & ~mask;
+}
+
+template <class T>
+inline T
+RoundDown(T val, T align)
+{
+    T mask = align - 1;
+    return val & ~mask;
+}
+
 inline bool
 IsHex(char c)
 {

base/misc.cc

@@ -29,11 +29,12 @@
 #include <iostream>
 #include <string>
 
-#include "host.hh"
 #include "cprintf.hh"
+#include "host.hh"
+#include "hostinfo.hh"
 #include "misc.hh"
-#include "universe.hh"
 #include "trace.hh"
+#include "universe.hh"
 
 using namespace std;
 
@@ -61,8 +62,6 @@ void
 __fatal(const string &format, cp::ArgList &args, const char *func,
         const char *file, int line)
 {
-    long mem_usage();
-
     string fmt = "fatal: " + format + " [%s:%s, line %d]\n"
         "\n%d\nMemory Usage: %ld KBytes\n";
 
@@ -70,7 +69,7 @@ __fatal(const string &format, cp::ArgList &args, const char *func,
     args.append(file);
     args.append(line);
     args.append(curTick);
-    args.append(mem_usage());
+    args.append(memUsage());
     args.dump(cerr, fmt);
 
     delete &args;

sim/prog.cc

@@ -36,6 +36,7 @@
 #include "prog.hh"
 
 #include "eio.hh"
+#include "intmath.hh"
 #include "thread.hh"
 #include "fake_syscall.hh"
 #include "object_file.hh"
@@ -251,7 +252,7 @@ LiveProcess::LiveProcess(const string &name,
     text_size = objFile->textSize();
     data_base = objFile->dataBase();
     data_size = objFile->dataSize() + objFile->bssSize();
-    brk_point = ROUND_UP(data_base + data_size, VMPageSize);
+    brk_point = RoundUp<uint64_t>(data_base + data_size, VMPageSize);
 
     // load object file into target memory
     objFile->loadSections(memory);

sim/sim_events.cc

@@ -30,6 +30,7 @@
 
 #include "cpu.hh"
 #include "eventq.hh"
+#include "hostinfo.hh"
 #include "sim_events.hh"
 #include "sim_exit.hh"
 #include "sim_stats.hh"
@@ -122,7 +123,7 @@ CheckSwapEvent::process()
     long swap;
 
     /*  returns free swap in KBytes  */
-    swap = proc_info("/proc/meminfo", "SwapFree:");
+    swap = procInfo("/proc/meminfo", "SwapFree:");
 
     if (swap < 1000)
         ccprintf(cerr, "\a\a\aWarning! Swap space is low (%d)\n", swap);