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#include "bu/hash.h"
#include "bu/fstring.h"
#include <sys/time.h>
#include <string>
#ifndef WIN32
inline double getTime()
{
struct timeval tv;
gettimeofday( &tv, NULL );
return ((double)tv.tv_sec) + ((double)tv.tv_usec/1000000.0);
}
#else
#include "windows.h"
#include "winbase.h"
inline double getTime()
{
uint32_t t = (uint32_t) GetTickCount();
return (double) t / 1000.0;
}
#endif
Bu::FString genThing()
{
Bu::FString bob;
bob.append("ab ");
bob += "cd ";
bob += "efg";
printf("---bob------\n%08X: %s\n", (unsigned int)bob.c_str(), bob.c_str() );
return bob;
}
void thing( Bu::FString str )
{
printf("Hey: %s\n", str.c_str() );
}
void copyfunc( std::string temp )
{
temp += "Hi";
}
void copyfunc( Bu::FString temp )
{
temp += "Hi";
}
void doTimings()
{
Bu::FString fs1, fs2;
std::string ss1, ss2;
double dStart, dEnd, tfs1, tfs2, tfs3, tss1, tss2, tss3;
int nChars = 500000, nChunks=5000, nCopies=5000000, nChunkSize=1024*4;
char *buf = new char[nChunkSize];
memset( buf, '!', nChunkSize );
printf("Timing Bu::FString single chars...\n");
dStart = getTime();
for( int j = 0; j < nChars; j++ ) fs1 += (char)('a'+(j%26));
fs1.getStr();
dEnd = getTime();
tfs1 = dEnd-dStart;
printf("Timing std::string single chars...\n");
dStart = getTime();
for( int j = 0; j < nChars; j++ ) ss1 += (char)('a'+(j%26));
ss1.c_str();
dEnd = getTime();
tss1 = dEnd-dStart;
printf("Timing Bu::FString %d char chunks...\n", nChunkSize);
dStart = getTime();
for( int j = 0; j < nChunks; j++ ) fs2.append(buf, nChunkSize);
fs2.getStr();
dEnd = getTime();
tfs2 = dEnd-dStart;
printf("Timing std::string %d char chunks...\n", nChunkSize);
dStart = getTime();
for( int j = 0; j < nChunks; j++ ) ss2.append(buf, nChunkSize);
ss2.c_str();
dEnd = getTime();
tss2 = dEnd-dStart;
fs2 = "Hello there.";
ss2 = "Hello there.";
printf("Timing Bu::FString copies...\n");
dStart = getTime();
for( int j = 0; j < nCopies; j++ ) Bu::FString stmp = fs2;
dEnd = getTime();
tfs3 = dEnd-dStart;
printf("Timing std::string copies...\n");
dStart = getTime();
for( int j = 0; j < nCopies; j++ ) std::string stpm = ss2;
dEnd = getTime();
tss3 = dEnd-dStart;
printf(
"Results: singles: chunks: copies:\n"
"Bu::FString %10.2f/s %10.2f/s %10.2f/s\n"
"std::string %10.2f/s %10.2f/s %10.2f/s\n",
nChars/tfs1, nChunks/tfs2, nCopies/tfs3,
nChars/tss1, nChunks/tss2, nCopies/tss3 );
delete[] buf;
}
#define pem printf("---------\n%08X: %s\n%08X: %s\n", (unsigned int)str.c_str(), str.c_str(), (unsigned int)str2.c_str(), str2.c_str() );
int main( int argc, char *argv )
{
Bu::FString str("th");
str.prepend("Hello ");
str.append("ere.");
Bu::FString str2( str );
pem;
str += " What's up?";
pem;
str2 += " How are you?";
pem;
str = str2;
pem;
str2 = genThing();
pem;
str = str2;
pem;
thing( str2 );
thing("test.");
printf("%d == %d\n", Bu::__calcHashCode( str ), Bu::__calcHashCode( str.c_str() ) );
doTimings();
}
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