add speed comparison
git-svn-id: svn://svn.code.sf.net/p/loki-lib/code/trunk@375 7ec92016-0320-0410-acc4-a06ded1c099a
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syntheticpp
parent
7eb9f2e6ae
commit
6b5d0e2629
1 changed files with 125 additions and 112 deletions
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@ -14,6 +14,8 @@
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#include <cassert>
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#include <utility>
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#include "../SmallObj/timer.h"
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using namespace std;
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template <class Integral1, class Integral2>
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@ -58,7 +60,7 @@ void TestCase(const string& fmt, T value)
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char buf[4096];
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std::string s;
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const int i1 = SPrintf(s, fmt.c_str())(value);
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#ifdef _MSC_VER
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const int i2 = _snprintf(buf, sizeof(buf), fmt.c_str(), value);
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#else
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@ -90,124 +92,135 @@ void TestCase2(const string& fmt, T value, U value2)
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int main(int argc, char** argv)
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{
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if (argc == 3)
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if (argc == 2)
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{
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// test speed
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int i = atoi(argv[2]);
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switch (argv[1][0])
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{
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case 'p':
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for (; i > 0; --i)
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{
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printf("Hey, %u frobnicators and %u twiddlicators\n",
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i, i);
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}
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break;
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case 's':
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for (; i > 0; --i)
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{
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cout << "Hey, " << i << " frobnicators and " << i <<
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" twiddlicators\n";
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}
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break;
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case 'n':
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for (; i > 0; --i)
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{
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Printf("Hey, %u frobnicators and %u twiddlicators\n")
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(i)(i);
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}
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break;
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}
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return 0;
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Timer t;
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int loop = atoi(argv[1]);
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if(loop < 100)
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loop = 100;
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t.start();
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for (int i=loop; i > 0; --i)
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printf("Hey, %u frobnicators and %u twiddlicators\n",i, i);
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t.stop();
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t.t100 = t.t();
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int t_printf = t.t();
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t.start();
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for (int i=loop; i > 0; --i)
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Printf("Hey, %u frobnicators and %u twiddlicators\n")(i)(i);
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t.stop();
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int t_Printf = t.t();
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t.start();
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for (int i=loop; i > 0; --i)
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cout << "Hey, " << i << " frobnicators and " << i <<" twiddlicators\n";
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t.stop();
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int t_cout = t.t();
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Printf("\n\nElapsed time for %i outputs\n\n")(loop);
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t.print(t_printf,"printf : ");
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t.print(t_Printf,"Printf : ");
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t.print(t_cout, "std::cout: ");
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}
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//srand(time(0));
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srand(0);
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for (unsigned i = 0; ; ++i)
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else
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{
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printf("%u\r", i);
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//srand(time(0));
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srand(0);
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printf("\nNumber of tests:\n");
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for (unsigned i = 0; ; ++i)
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{
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printf("%u\r", i);
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// Generate a random string for the head
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string lead = RandomString(100);
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// This string will hold a random format specification
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string formatSpec(lead + "|%");
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// Generate a random set of flags
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static const string flags("-+0 #");
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unsigned int maxFlags = RandomInt(0u, flags.length() - 1);
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for (unsigned int i = 0; i != maxFlags; ++i)
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{
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formatSpec += flags[RandomInt(0u, flags.length() - 1)];
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}
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// Generate an optional random width
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if (RandomInt(0, 1))
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{
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const unsigned int width = RandomInt(0, 100);
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char buf[4];
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sprintf(buf, "%u", width);
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formatSpec += buf;
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}
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// Generate an optional random precision
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if (RandomInt(0, 1))
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{
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const unsigned int prec = RandomInt(0, 100);
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char buf[4];
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sprintf(buf, "%u", prec);
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formatSpec += '.';
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formatSpec += buf;
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}
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// Generate a random type character
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/* disable %p tests
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static const string type("cdeEfgGinopsuxX");*/
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static const string type("cdeEfgGinosuxX");
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const char typeSpec = type[RandomInt(0, type.size() - 1)];
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// Generate an optional type prefix
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static const string prefix("hl");
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if (typeSpec != 's' && RandomInt(0, 1))
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{
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formatSpec += prefix[RandomInt(0, prefix.size() - 1)];
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}
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formatSpec += typeSpec;
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formatSpec += '|';
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formatSpec += RandomString(100);
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switch (typeSpec)
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{
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case 'c':
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TestCase(formatSpec, RandomInt(1, 127));
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break;
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case 'd':
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case 'i':
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case 'o':
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case 'u':
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case 'x':
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case 'X':
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TestCase(formatSpec, RandomInt(-10000, 10000));
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break;
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case 'e':
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case 'E':
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case 'f':
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case 'g':
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case 'G':
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TestCase(formatSpec,
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RandomInt(-10000, 10000) / double(RandomInt(1, 100)));
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break;
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case 'n':
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break;
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case 'p':
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// Generate a random string for the head
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string lead = RandomString(100);
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// This string will hold a random format specification
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string formatSpec(lead + "|%");
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// Generate a random set of flags
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static const string flags("-+0 #");
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unsigned int maxFlags = RandomInt(0u, flags.length() - 1);
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for (unsigned int i = 0; i != maxFlags; ++i)
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{
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void * p = malloc(RandomInt(1, 1000));
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TestCase(formatSpec, p);
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free(p);
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formatSpec += flags[RandomInt(0u, flags.length() - 1)];
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}
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// Generate an optional random width
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if (RandomInt(0, 1))
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{
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const unsigned int width = RandomInt(0, 100);
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char buf[4];
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sprintf(buf, "%u", width);
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formatSpec += buf;
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}
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// Generate an optional random precision
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if (RandomInt(0, 1))
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{
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const unsigned int prec = RandomInt(0, 100);
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char buf[4];
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sprintf(buf, "%u", prec);
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formatSpec += '.';
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formatSpec += buf;
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}
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// Generate a random type character
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/* disable %p tests
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static const string type("cdeEfgGinopsuxX");*/
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static const string type("cdeEfgGinosuxX");
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const char typeSpec = type[RandomInt(0, type.size() - 1)];
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// Generate an optional type prefix
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static const string prefix("hl");
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if (typeSpec != 's' && RandomInt(0, 1))
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{
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formatSpec += prefix[RandomInt(0, prefix.size() - 1)];
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}
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formatSpec += typeSpec;
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formatSpec += '|';
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formatSpec += RandomString(100);
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switch (typeSpec)
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{
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case 'c':
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TestCase(formatSpec, RandomInt(1, 127));
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break;
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case 'd':
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case 'i':
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case 'o':
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case 'u':
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case 'x':
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case 'X':
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TestCase(formatSpec, RandomInt(-10000, 10000));
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break;
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case 'e':
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case 'E':
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case 'f':
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case 'g':
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case 'G':
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TestCase(formatSpec,
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RandomInt(-10000, 10000) / double(RandomInt(1, 100)));
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break;
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case 'n':
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break;
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case 'p':
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{
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void * p = malloc(RandomInt(1, 1000));
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TestCase(formatSpec, p);
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free(p);
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}
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break;
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case 's':
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TestCase(formatSpec, RandomString(100).c_str());
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break;
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default:
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assert(false);
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break;
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}
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break;
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case 's':
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TestCase(formatSpec, RandomString(100).c_str());
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break;
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default:
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assert(false);
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break;
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}
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}
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}
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