@ -149,6 +149,85 @@ enum Type {
kTypeRate = 5 ,
} ;
/*
* Time printing
*
* kPrintFormatLong time string is 19 characters ( including null termination ) .
* Example Long Form : " 03-27 16:47:06.187 "
* MM DD HH MM SS MS
*
* kPrintFormatShort time string is 13 characters ( including null termination ) .
* Example Short Form : " 16:47:06.187 "
* HH MM SS MS
*/
enum PrintFormat {
kPrintFormatLong = 0 ,
kPrintFormatShort = 1 ,
} ;
/**
* Converts real time in ns to a time string object , with format similar to logcat .
*
* \ param ns input real time in nanoseconds to convert .
* \ param buffer the buffer location to put the converted string .
* \ param bufferSize the size of buffer in bytes .
* \ param format format , from enum PrintFormat .
*/
void nsToString (
int64_t ns , char * buffer , size_t bufferSize , PrintFormat format = kPrintFormatLong ) ;
// Contains the time string
struct time_string_t {
char time [ 19 ] ; /* minimum size buffer */
} ;
/**
* Converts real time in ns to a time string object , with format similar to logcat .
*
* \ param ns input real time in nanoseconds to convert .
* \ param format format , from enum PrintFormat .
* \ return a time_string_t object with the time string encoded .
*/
static inline time_string_t timeStringFromNs ( int64_t ns , PrintFormat format = kPrintFormatLong ) {
time_string_t ts ;
nsToString ( ns , ts . time , sizeof ( ts . time ) , format ) ;
return ts ;
}
/**
* Finds the end of the common time prefix .
*
* This is as an option to remove the common time prefix to avoid
* unnecessary duplicated strings .
*
* \ param time1 a time string from timeStringFromNs
* \ param time2 a time string from timeStringFromNs
* \ return the position where the common time prefix ends . For abbreviated
* printing of time2 , offset the character pointer by this position .
*/
static inline size_t commonTimePrefixPosition ( const char * time1 , const char * time2 ) {
size_t i ;
// Find location of the first mismatch between strings
for ( i = 0 ; ; + + i ) {
if ( time1 [ i ] ! = time2 [ i ] ) {
break ;
}
if ( time1 [ i ] = = 0 ) {
return i ; // strings match completely
}
}
// Go backwards until we find a delimeter or space.
for ( ; i > 0
& & isdigit ( time1 [ i ] ) // still a number
& & time1 [ i - 1 ] ! = ' '
; - - i ) {
}
return i ;
}
/**
* The MediaMetrics Item has special Item properties ,
* derived internally or through dedicated setters .
@ -341,35 +420,35 @@ protected:
template < > // static
void toStringBuffer (
const char * name , const int32_t & value , char * buffer , size_t length ) {
snprintf ( buffer , length , " %s=%d : " , name , value ) ;
snprintf ( buffer , length , " %s=%d " , name , value ) ;
}
template < > // static
void toStringBuffer (
const char * name , const int64_t & value , char * buffer , size_t length ) {
snprintf ( buffer , length , " %s=%lld : " , name , ( long long ) value ) ;
snprintf ( buffer , length , " %s=%lld " , name , ( long long ) value ) ;
}
template < > // static
void toStringBuffer (
const char * name , const double & value , char * buffer , size_t length ) {
snprintf ( buffer , length , " %s=%e : " , name , value ) ;
snprintf ( buffer , length , " %s=%e " , name , value ) ;
}
template < > // static
void toStringBuffer (
const char * name , const std : : pair < int64_t , int64_t > & value ,
char * buffer , size_t length ) {
snprintf ( buffer , length , " %s=%lld/%lld : " ,
snprintf ( buffer , length , " %s=%lld/%lld " ,
name , ( long long ) value . first , ( long long ) value . second ) ;
}
template < > // static
void toStringBuffer (
const char * name , const std : : string & value , char * buffer , size_t length ) {
// TODO sanitize string for ':' '='
snprintf ( buffer , length , " %s=%s : " , name , value . c_str ( ) ) ;
snprintf ( buffer , length , " %s=%s " , name , value . c_str ( ) ) ;
}
template < > // static
void toStringBuffer (
const char * name , const std : : monostate & , char * buffer , size_t length ) {
snprintf ( buffer , length , " %s=() : " , name ) ;
snprintf ( buffer , length , " %s=() " , name ) ;
}
template < typename T >
@ -839,13 +918,6 @@ public:
return iterator ( mProps . cend ( ) ) ;
}
enum {
PROTO_V0 = 0 ,
PROTO_FIRST = PROTO_V0 ,
PROTO_V1 = 1 ,
PROTO_LAST = PROTO_V1 ,
} ;
// T must be convertible to mKey
template < typename T >
explicit Item ( T key )
@ -1043,9 +1115,7 @@ public:
std : : string toString ( ) const ;
std : : string toString ( int version ) const ;
const char * toCString ( ) ;
const char * toCString ( int version ) ;
/**
* Returns true if the item has a property with a target value .
Andy Hung
5 years ago