diff options
Diffstat (limited to 'contrib/postgres_fdw/option.c')
| -rw-r--r-- | contrib/postgres_fdw/option.c | 33 |
1 files changed, 12 insertions, 21 deletions
diff --git a/contrib/postgres_fdw/option.c b/contrib/postgres_fdw/option.c index c2f936640bc..d6fa89bad93 100644 --- a/contrib/postgres_fdw/option.c +++ b/contrib/postgres_fdw/option.c @@ -21,6 +21,7 @@ #include "libpq/libpq-be.h" #include "postgres_fdw.h" #include "utils/guc.h" +#include "utils/memutils.h" #include "utils/varlena.h" /* @@ -40,12 +41,6 @@ typedef struct PgFdwOption static PgFdwOption *postgres_fdw_options; /* - * Valid options for libpq. - * Allocated and filled in InitPgFdwOptions. - */ -static PQconninfoOption *libpq_options; - -/* * GUC parameters */ char *pgfdw_application_name = NULL; @@ -239,6 +234,7 @@ static void InitPgFdwOptions(void) { int num_libpq_opts; + PQconninfoOption *libpq_options; PQconninfoOption *lopt; PgFdwOption *popt; @@ -307,8 +303,8 @@ InitPgFdwOptions(void) * Get list of valid libpq options. * * To avoid unnecessary work, we get the list once and use it throughout - * the lifetime of this backend process. We don't need to care about - * memory context issues, because PQconndefaults allocates with malloc. + * the lifetime of this backend process. Hence, we'll allocate it in + * TopMemoryContext. */ libpq_options = PQconndefaults(); if (!libpq_options) /* assume reason for failure is OOM */ @@ -325,19 +321,11 @@ InitPgFdwOptions(void) /* * Construct an array which consists of all valid options for * postgres_fdw, by appending FDW-specific options to libpq options. - * - * We use plain malloc here to allocate postgres_fdw_options because it - * lives as long as the backend process does. Besides, keeping - * libpq_options in memory allows us to avoid copying every keyword - * string. */ postgres_fdw_options = (PgFdwOption *) - malloc(sizeof(PgFdwOption) * num_libpq_opts + - sizeof(non_libpq_options)); - if (postgres_fdw_options == NULL) - ereport(ERROR, - (errcode(ERRCODE_FDW_OUT_OF_MEMORY), - errmsg("out of memory"))); + MemoryContextAlloc(TopMemoryContext, + sizeof(PgFdwOption) * num_libpq_opts + + sizeof(non_libpq_options)); popt = postgres_fdw_options; for (lopt = libpq_options; lopt->keyword; lopt++) @@ -355,8 +343,8 @@ InitPgFdwOptions(void) if (strncmp(lopt->keyword, "oauth_", strlen("oauth_")) == 0) continue; - /* We don't have to copy keyword string, as described above. */ - popt->keyword = lopt->keyword; + popt->keyword = MemoryContextStrdup(TopMemoryContext, + lopt->keyword); /* * "user" and any secret options are allowed only on user mappings. @@ -371,6 +359,9 @@ InitPgFdwOptions(void) popt++; } + /* Done with libpq's output structure. */ + PQconninfoFree(libpq_options); + /* Append FDW-specific options and dummy terminator. */ memcpy(popt, non_libpq_options, sizeof(non_libpq_options)); } |