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https://github.com/wolfpld/tracy.git
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Optimize TimeToString().
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3c4394489c
commit
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@ -42,7 +42,120 @@
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namespace tracy
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{
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static const char* TimeToString( int64_t ns )
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static const char* IntTable100 =
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"00010203040506070809"
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"10111213141516171819"
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"20212223242526272829"
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"30313233343536373839"
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"40414243444546474849"
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"50515253545556575859"
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"60616263646566676869"
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"70717273747576777879"
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"80818283848586878889"
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"90919293949596979899";
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static const char* IntTable10 = "0123456789";
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static inline void PrintTinyInt( char*& buf, uint64_t v )
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{
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if( v >= 10 )
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{
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*buf++ = IntTable10[v/10];
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}
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*buf++ = IntTable10[v%10];
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}
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static inline void PrintTinyInt0( char*& buf, uint64_t v )
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{
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if( v >= 10 )
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{
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*buf++ = IntTable10[v/10];
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}
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else
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{
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*buf++ = '0';
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}
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*buf++ = IntTable10[v%10];
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}
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static inline void PrintSmallInt( char*& buf, uint64_t v )
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{
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if( v >= 100 )
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{
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memcpy( buf, IntTable100 + v/10*2, 2 );
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buf += 2;
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}
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else if( v >= 10 )
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{
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*buf++ = IntTable10[v/10];
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}
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*buf++ = IntTable10[v%10];
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}
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static inline void PrintFrac00( char*& buf, uint64_t v )
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{
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*buf++ = '.';
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memcpy( buf, IntTable100 + (v+5)/10*2, 2 );
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buf += 2;
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}
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static inline void PrintFrac0( char*& buf, uint64_t v )
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{
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*buf++ = '.';
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*buf++ = IntTable10[(v+50)/100];
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}
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static inline void PrintSmallIntFrac( char*& buf, uint64_t v )
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{
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uint64_t in = v / 1000;
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uint64_t fr = v % 1000;
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if( fr >= 995 )
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{
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PrintSmallInt( buf, in+1 );
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memcpy( buf, ".00", 3 );
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buf += 3;
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}
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else
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{
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PrintSmallInt( buf, in );
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if( fr > 5 )
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{
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PrintFrac00( buf, fr );
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}
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else
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{
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memcpy( buf, ".00", 3 );
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buf += 3;
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}
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}
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}
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static inline void PrintSecondsFrac( char*& buf, uint64_t v )
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{
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uint64_t in = v / 1000;
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uint64_t fr = v % 1000;
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if( fr >= 950 )
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{
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PrintTinyInt0( buf, in+1 );
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memcpy( buf, ".0", 2 );
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buf += 2;
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}
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else
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{
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PrintTinyInt0( buf, in );
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if( fr > 50 )
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{
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PrintFrac0( buf, fr );
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}
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else
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{
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memcpy( buf, ".0", 2 );
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buf += 2;
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}
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}
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}
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static const char* TimeToString( int64_t _ns )
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{
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enum { Pool = 8 };
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static char bufpool[Pool][64];
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@ -51,45 +164,62 @@ static const char* TimeToString( int64_t ns )
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char* bufstart = buf;
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bufsel = ( bufsel + 1 ) % Pool;
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if( ns < 0 )
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uint64_t ns;
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if( _ns < 0 )
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{
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*buf = '-';
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buf++;
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ns = -ns;
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ns = -_ns;
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}
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else
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{
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ns = _ns;
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}
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if( ns < 1000 )
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{
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sprintf( buf, "%" PRIi64 " ns", ns );
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PrintSmallInt( buf, ns );
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memcpy( buf, " ns", 4 );
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}
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else if( ns < 1000ll * 1000 )
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{
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PrintSmallIntFrac( buf, ns );
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#ifdef TRACY_EXTENDED_FONT
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sprintf( buf, "%.2f \xce\xbcs", ns / 1000. );
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memcpy( buf, " \xce\xbcs", 5 );
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#else
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sprintf( buf, "%.2f us", ns / 1000. );
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memcpy( buf, " us", 4 );
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#endif
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}
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else if( ns < 1000ll * 1000 * 1000 )
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{
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sprintf( buf, "%.2f ms", ns / ( 1000. * 1000. ) );
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PrintSmallIntFrac( buf, ns / 1000 );
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memcpy( buf, " ms", 4 );
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}
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else if( ns < 1000ll * 1000 * 1000 * 60 )
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{
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sprintf( buf, "%.2f s", ns / ( 1000. * 1000. * 1000. ) );
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PrintSmallIntFrac( buf, ns / ( 1000ll * 1000 ) );
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memcpy( buf, " s", 3 );
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}
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else if( ns < 1000ll * 1000 * 1000 * 60 * 60 )
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{
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const auto m = int64_t( ns / ( 1000ll * 1000 * 1000 * 60 ) );
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const auto s = int64_t( ns - m * ( 1000ll * 1000 * 1000 * 60 ) ) / ( 1000. * 1000. * 1000. );
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sprintf( buf, "%" PRIi64 ":%04.1f", m, s );
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const auto s = int64_t( ns - m * ( 1000ll * 1000 * 1000 * 60 ) ) / ( 1000ll * 1000 );
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PrintTinyInt( buf, m );
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*buf++ = ':';
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PrintSecondsFrac( buf, s );
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*buf++ = '\0';
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}
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else if( ns < 1000ll * 1000 * 1000 * 60 * 60 * 24 )
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{
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const auto h = int64_t( ns / ( 1000ll * 1000 * 1000 * 60 * 60 ) );
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const auto m = int64_t( ns / ( 1000ll * 1000 * 1000 * 60 ) - h * 60 );
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const auto s = int64_t( ns / ( 1000ll * 1000 * 1000 ) - h * ( 60 * 60 ) - m * 60 );
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sprintf( buf, "%" PRIi64 ":%02" PRIi64 ":%02" PRIi64, h, m, s );
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PrintTinyInt( buf, h );
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*buf++ = ':';
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PrintTinyInt0( buf, m );
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*buf++ = ':';
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PrintTinyInt0( buf, s );
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*buf++ = '\0';
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}
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else
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{
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@ -97,7 +227,13 @@ static const char* TimeToString( int64_t ns )
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const auto h = int64_t( ns / ( 1000ll * 1000 * 1000 * 60 * 60 ) - d * 24 );
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const auto m = int64_t( ns / ( 1000ll * 1000 * 1000 * 60 ) - d * ( 60 * 24 ) - h * 60 );
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const auto s = int64_t( ns / ( 1000ll * 1000 * 1000 ) - d * ( 60 * 60 * 24 ) - h * ( 60 * 60 ) - m * 60 );
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sprintf( buf, "%" PRIi64 "d%02" PRIi64 ":%02" PRIi64 ":%02" PRIi64, d, h, m, s );
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buf += sprintf( buf, "%" PRIi64 "d", d );
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PrintTinyInt0( buf, h );
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*buf++ = ':';
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PrintTinyInt0( buf, m );
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*buf++ = ':';
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PrintTinyInt0( buf, s );
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*buf++ = '\0';
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}
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return bufstart;
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}
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