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Optimize TimeToString().

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This commit is contained in:
Bartosz Taudul 2019-02-08 22:11:06 +01:00
parent 3c4394489c
commit d940e315bd
1 changed files with 148 additions and 12 deletions
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160
server/TracyView.cpp
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@ -42,7 +42,120 @@
namespace tracy
{
static const char* TimeToString( int64_t ns )
static const char* IntTable100 =
"00010203040506070809"
"10111213141516171819"
"20212223242526272829"
"30313233343536373839"
"40414243444546474849"
"50515253545556575859"
"60616263646566676869"
"70717273747576777879"
"80818283848586878889"
"90919293949596979899";
static const char* IntTable10 = "0123456789";
static inline void PrintTinyInt( char*& buf, uint64_t v )
{
if( v >= 10 )
{
*buf++ = IntTable10[v/10];
}
*buf++ = IntTable10[v%10];
}
static inline void PrintTinyInt0( char*& buf, uint64_t v )
{
if( v >= 10 )
{
*buf++ = IntTable10[v/10];
}
else
{
*buf++ = '0';
}
*buf++ = IntTable10[v%10];
}
static inline void PrintSmallInt( char*& buf, uint64_t v )
{
if( v >= 100 )
{
memcpy( buf, IntTable100 + v/10*2, 2 );
buf += 2;
}
else if( v >= 10 )
{
*buf++ = IntTable10[v/10];
}
*buf++ = IntTable10[v%10];
}
static inline void PrintFrac00( char*& buf, uint64_t v )
{
*buf++ = '.';
memcpy( buf, IntTable100 + (v+5)/10*2, 2 );
buf += 2;
}
static inline void PrintFrac0( char*& buf, uint64_t v )
{
*buf++ = '.';
*buf++ = IntTable10[(v+50)/100];
}
static inline void PrintSmallIntFrac( char*& buf, uint64_t v )
{
uint64_t in = v / 1000;
uint64_t fr = v % 1000;
if( fr >= 995 )
{
PrintSmallInt( buf, in+1 );
memcpy( buf, ".00", 3 );
buf += 3;
}
else
{
PrintSmallInt( buf, in );
if( fr > 5 )
{
PrintFrac00( buf, fr );
}
else
{
memcpy( buf, ".00", 3 );
buf += 3;
}
}
}
static inline void PrintSecondsFrac( char*& buf, uint64_t v )
{
uint64_t in = v / 1000;
uint64_t fr = v % 1000;
if( fr >= 950 )
{
PrintTinyInt0( buf, in+1 );
memcpy( buf, ".0", 2 );
buf += 2;
}
else
{
PrintTinyInt0( buf, in );
if( fr > 50 )
{
PrintFrac0( buf, fr );
}
else
{
memcpy( buf, ".0", 2 );
buf += 2;
}
}
}
static const char* TimeToString( int64_t _ns )
{
enum { Pool = 8 };
static char bufpool[Pool][64];
@ -51,45 +164,62 @@ static const char* TimeToString( int64_t ns )
char* bufstart = buf;
bufsel = ( bufsel + 1 ) % Pool;
if( ns < 0 )
uint64_t ns;
if( _ns < 0 )
{
*buf = '-';
buf++;
ns = -ns;
ns = -_ns;
}
else
{
ns = _ns;
}
if( ns < 1000 )
{
sprintf( buf, "%" PRIi64 " ns", ns );
PrintSmallInt( buf, ns );
memcpy( buf, " ns", 4 );
}
else if( ns < 1000ll * 1000 )
{
PrintSmallIntFrac( buf, ns );
#ifdef TRACY_EXTENDED_FONT
sprintf( buf, "%.2f \xce\xbcs", ns / 1000. );
memcpy( buf, " \xce\xbcs", 5 );
#else
sprintf( buf, "%.2f us", ns / 1000. );
memcpy( buf, " us", 4 );
#endif
}
else if( ns < 1000ll * 1000 * 1000 )
{
sprintf( buf, "%.2f ms", ns / ( 1000. * 1000. ) );
PrintSmallIntFrac( buf, ns / 1000 );
memcpy( buf, " ms", 4 );
}
else if( ns < 1000ll * 1000 * 1000 * 60 )
{
sprintf( buf, "%.2f s", ns / ( 1000. * 1000. * 1000. ) );
PrintSmallIntFrac( buf, ns / ( 1000ll * 1000 ) );
memcpy( buf, " s", 3 );
}
else if( ns < 1000ll * 1000 * 1000 * 60 * 60 )
{
const auto m = int64_t( ns / ( 1000ll * 1000 * 1000 * 60 ) );
const auto s = int64_t( ns - m * ( 1000ll * 1000 * 1000 * 60 ) ) / ( 1000. * 1000. * 1000. );
sprintf( buf, "%" PRIi64 ":%04.1f", m, s );
const auto s = int64_t( ns - m * ( 1000ll * 1000 * 1000 * 60 ) ) / ( 1000ll * 1000 );
PrintTinyInt( buf, m );
*buf++ = ':';
PrintSecondsFrac( buf, s );
*buf++ = '\0';
}
else if( ns < 1000ll * 1000 * 1000 * 60 * 60 * 24 )
{
const auto h = int64_t( ns / ( 1000ll * 1000 * 1000 * 60 * 60 ) );
const auto m = int64_t( ns / ( 1000ll * 1000 * 1000 * 60 ) - h * 60 );
const auto s = int64_t( ns / ( 1000ll * 1000 * 1000 ) - h * ( 60 * 60 ) - m * 60 );
sprintf( buf, "%" PRIi64 ":%02" PRIi64 ":%02" PRIi64, h, m, s );
PrintTinyInt( buf, h );
*buf++ = ':';
PrintTinyInt0( buf, m );
*buf++ = ':';
PrintTinyInt0( buf, s );
*buf++ = '\0';
}
else
{
@ -97,7 +227,13 @@ static const char* TimeToString( int64_t ns )
const auto h = int64_t( ns / ( 1000ll * 1000 * 1000 * 60 * 60 ) - d * 24 );
const auto m = int64_t( ns / ( 1000ll * 1000 * 1000 * 60 ) - d * ( 60 * 24 ) - h * 60 );
const auto s = int64_t( ns / ( 1000ll * 1000 * 1000 ) - d * ( 60 * 60 * 24 ) - h * ( 60 * 60 ) - m * 60 );
sprintf( buf, "%" PRIi64 "d%02" PRIi64 ":%02" PRIi64 ":%02" PRIi64, d, h, m, s );
buf += sprintf( buf, "%" PRIi64 "d", d );
PrintTinyInt0( buf, h );
*buf++ = ':';
PrintTinyInt0( buf, m );
*buf++ = ':';
PrintTinyInt0( buf, s );
*buf++ = '\0';
}
return bufstart;
}