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Overview
| Comment: | Performance improvement in sqlite3VarintLen(). |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA1: |
adf9fefb00ae1dbb07a921c6796cb0a9 |
| User & Date: | drh 2015-09-01 22:29:07 |
Context
|
2015-09-01
| ||
| 23:51 | Very minor optimizations in the unix VFS. check-in: 6db3ff45 user: drh tags: trunk | |
| 22:29 | Performance improvement in sqlite3VarintLen(). check-in: adf9fefb user: drh tags: trunk | |
| 20:09 | Small size reduction and performance increase in sqlite3DbMallocSize(). check-in: 8a80967f user: drh tags: trunk | |
Changes
Changes to src/util.c.
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}
/*
** Return the number of bytes that will be needed to store the given
** 64-bit integer.
*/
int sqlite3VarintLen(u64 v){
int i = 0;
do{
i++;
v >>= 7;
}while( v!=0 && ALWAYS(i<9) );
return i;
}
/*
** Read or write a four-byte big-endian integer value.
*/
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}
/*
** Return the number of bytes that will be needed to store the given
** 64-bit integer.
*/
int sqlite3VarintLen(u64 v){
int i;
for(i=1; (v >>= 7)!=0; i++){ assert( i<9 ); }
return i;
}
/*
** Read or write a four-byte big-endian integer value.
*/
|