diff options
Diffstat (limited to 'src/backend/storage/ipc')
| -rw-r--r-- | src/backend/storage/ipc/dsm.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/src/backend/storage/ipc/dsm.c b/src/backend/storage/ipc/dsm.c index b461a5f7e96..074dff4e6d8 100644 --- a/src/backend/storage/ipc/dsm.c +++ b/src/backend/storage/ipc/dsm.c @@ -33,6 +33,7 @@ #endif #include <sys/stat.h> +#include "common/pg_prng.h" #include "lib/ilist.h" #include "miscadmin.h" #include "port/pg_bitutils.h" @@ -180,7 +181,8 @@ dsm_postmaster_startup(PGShmemHeader *shim) { Assert(dsm_control_address == NULL); Assert(dsm_control_mapped_size == 0); - dsm_control_handle = random() << 1; /* Even numbers only */ + /* Use even numbers only */ + dsm_control_handle = pg_prng_uint32(&pg_global_prng_state) << 1; if (dsm_control_handle == DSM_HANDLE_INVALID) continue; if (dsm_impl_op(DSM_OP_CREATE, dsm_control_handle, segsize, @@ -536,7 +538,8 @@ dsm_create(Size size, int flags) for (;;) { Assert(seg->mapped_address == NULL && seg->mapped_size == 0); - seg->handle = random() << 1; /* Even numbers only */ + /* Use even numbers only */ + seg->handle = pg_prng_uint32(&pg_global_prng_state) << 1; if (seg->handle == DSM_HANDLE_INVALID) /* Reserve sentinel */ continue; if (dsm_impl_op(DSM_OP_CREATE, seg->handle, size, &seg->impl_private, @@ -1237,7 +1240,7 @@ make_main_region_dsm_handle(int slot) */ handle = 1; handle |= slot << 1; - handle |= random() << (pg_leftmost_one_pos32(dsm_control->maxitems) + 1); + handle |= pg_prng_uint32(&pg_global_prng_state) << (pg_leftmost_one_pos32(dsm_control->maxitems) + 1); return handle; } |