diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/backend/bootstrap/bootstrap.c | 8 | ||||
| -rw-r--r-- | src/backend/tcop/postgres.c | 8 | ||||
| -rw-r--r-- | src/bin/initdb/initdb.c | 3 |
3 files changed, 19 insertions, 0 deletions
diff --git a/src/backend/bootstrap/bootstrap.c b/src/backend/bootstrap/bootstrap.c index 0e14b9272b5..0943a59d660 100644 --- a/src/backend/bootstrap/bootstrap.c +++ b/src/backend/bootstrap/bootstrap.c @@ -197,6 +197,14 @@ AuxiliaryProcessMain(int argc, char *argv[]) MyStartTime = time(NULL); + /* + * Initialize random() for the first time, like PostmasterMain() would. + * In a regular IsUnderPostmaster backend, BackendRun() computes a + * high-entropy seed before any user query. Fewer distinct initial seeds + * can occur here. + */ + srandom((unsigned int) (MyProcPid ^ MyStartTime)); + /* Compute paths, if we didn't inherit them from postmaster */ if (my_exec_path[0] == '\0') { diff --git a/src/backend/tcop/postgres.c b/src/backend/tcop/postgres.c index 5903b228905..98180ed52ab 100644 --- a/src/backend/tcop/postgres.c +++ b/src/backend/tcop/postgres.c @@ -3611,6 +3611,14 @@ PostgresMain(int argc, char *argv[], MyProcPid = getpid(); MyStartTime = time(NULL); + + /* + * Initialize random() for the first time, like PostmasterMain() + * would. In a regular IsUnderPostmaster backend, BackendRun() + * computes a high-entropy seed before any user query. Fewer distinct + * initial seeds can occur here. + */ + srandom((unsigned int) (MyProcPid ^ MyStartTime)); } SetProcessingMode(InitProcessing); diff --git a/src/bin/initdb/initdb.c b/src/bin/initdb/initdb.c index 6de22ba65e1..fb16897adf0 100644 --- a/src/bin/initdb/initdb.c +++ b/src/bin/initdb/initdb.c @@ -1055,6 +1055,9 @@ choose_dsm_implementation(void) #ifdef HAVE_SHM_OPEN int ntries = 10; + /* Initialize random(); this function is its only user in this program. */ + srandom((unsigned int) (getpid() ^ time(NULL))); + while (ntries > 0) { uint32 handle; |