1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
|
/*
* Copyright (C) 2007-2010 Xagasoft, All rights reserved.
*
* This file is part of the libbu++ library and is released under the
* terms of the license contained in the file LICENSE.
*/
#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%08tX: %s\n", (ptrdiff_t)bob.getStr(),
bob.getStr() );
return bob;
}
void thing( Bu::FString str )
{
printf("Hey: %s\n", str.getStr() );
}
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%08tX: %s\n%08tX: %s\n", (ptrdiff_t)str.getStr(), str.getStr(), (ptrdiff_t)str2.getStr(), str2.getStr() );
int main( )
{
Bu::FString fs1;
for( int j = 0; j < 500000; j++ ) fs1 += (char)('a'+(j%26));
return 0;
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.getStr() ) );
doTimings();
return 0;
}
|
