[HACKERS] initdb: introduce PG_CMD_PRINTF intestead of PG_CMD_PRINTF{1,2,3}

Hello all, The src/bin/initdb/initdb.c provides three macros to write data to cmdfd. All of these macro do the same, but with different amount of arguments for fprintf(). Attached patch introduces PG_CMD_PRINTF macro which will take set of variadic arguments via __VA_ARGS__ to replace the PG_CMD_

[HACKERS] [PATCH] Use MemoryContextAlloc() in the MemoryContextAllocZero() and MemoryContextAllocZeroAligned()

Hello all, Attached patch simplifies the MemoryContextAllocZero() and MemoryContextAllocZeroAligned(). The MemoryContextAllocZero() and MemoryContextAllocZeroAligned() functions does almost the same that MemoryContextAlloc() does. Additionally these functions fills allocated memory context with ze

[HACKERS] utils/misc: Simplify search of end of argv in save_ps_display_args()

Hello, Attached patch provides trivial simplification of the search of end of the argv[] area by replacing for() loop with calculation based on argc. diff --git a/src/backend/utils/misc/ps_status.c b/src/backend/utils/misc/ps_status.c index 892a810..d8f2105 100644 --- a/src/backend/utils/misc/ps_s