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| author | Thomas Munro <tmunro@postgresql.org> | 2018-11-15 17:10:43 +1300 |
|---|---|---|
| committer | Thomas Munro <tmunro@postgresql.org> | 2018-11-15 17:38:55 +1300 |
| commit | ab8984f52d9b99234d23e6fb7b73cf4c12b3ac14 (patch) | |
| tree | 7bd993576a8fb39867c6a10cdc9f6a0e8be0a4f8 /src | |
| parent | 5b0ce3ec334bb65bbab4aba78f204f986c356e80 (diff) | |
| download | postgresql-ab8984f52d9b99234d23e6fb7b73cf4c12b3ac14.tar.gz postgresql-ab8984f52d9b99234d23e6fb7b73cf4c12b3ac14.zip | |
Further adjustment to random() seed initialization.
Per complaint from Tom Lane, don't chomp the timestamp at 32 bits, so we
can shift in some of its higher bits.
Discussion: https://postgr.es/m/14712.1542253115%40sss.pgh.pa.us
Diffstat (limited to 'src')
| -rw-r--r-- | src/backend/postmaster/postmaster.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/src/backend/postmaster/postmaster.c b/src/backend/postmaster/postmaster.c index 981a058522f..cb49f3255f9 100644 --- a/src/backend/postmaster/postmaster.c +++ b/src/backend/postmaster/postmaster.c @@ -2532,9 +2532,9 @@ InitProcessGlobals(void) * in a given time period. Since that would leave only 20 bits of the * timestamp that cycle every ~1 second, also mix in some higher bits. */ - srandom(((unsigned int) MyProcPid) ^ - ((unsigned int) MyStartTimestamp << 12) ^ - ((unsigned int) MyStartTimestamp >> 20)); + srandom(((uint64) MyProcPid) ^ + ((uint64) MyStartTimestamp << 12) ^ + ((uint64) MyStartTimestamp >> 20)); } |