Added DEBUG5 messages to help debug memory problems.

diff --git a/pg_proctab.c b/pg_proctab.c
index 1a2c815d60e66dcc2fe519de12727568526704a6..9cc5319ba061f1512f5766c727499c3c1f0fd3d6 100644 (file)
--- a/pg_proctab.c
+++ b/pg_proctab.c
@@ -72,6 +72,8 @@ Datum pg_proctab(PG_FUNCTION_ARGS)
                        i_exit_signal, i_processor, i_rt_priority, i_policy,
                        i_delayacct_blkio_ticks};
 
+       elog(DEBUG5, "pg_proctab: Entering stored function.");
+
        /* stuff done only on the first call of the function */
        if (SRF_IS_FIRSTCALL())
        {
@@ -102,6 +104,7 @@ Datum pg_proctab(PG_FUNCTION_ARGS)
                /* Get pid of all client connections. */
 
                SPI_connect();
+               elog(DEBUG5, "pg_proctab: SPI connected.");
 
                ret = SPI_exec(GET_PIDS, 0);
                if (ret == SPI_OK_SELECT)
@@ -115,6 +118,8 @@ Datum pg_proctab(PG_FUNCTION_ARGS)
 
                        /* total number of tuples to be returned */
                        funcctx->max_calls = SPI_processed;
+                       elog(DEBUG5, "pg_proctab: %d process(es) in pg_stat_activity.",
+                                       funcctx->max_calls);
                        funcctx->user_fctx = palloc(sizeof(int32) * funcctx->max_calls);
                        ppid = (int32 *) funcctx->user_fctx;
 
@@ -125,6 +130,7 @@ Datum pg_proctab(PG_FUNCTION_ARGS)
                        {
                                tuple = tuptable->vals[i];
                                ppid[i] = atoi(SPI_getvalue(tuple, tupdesc, 1));
+                               elog(DEBUG5, "pg_proctab: saving pid %d.", ppid[i]);
                        }
                }
                else
@@ -169,6 +175,8 @@ Datum pg_proctab(PG_FUNCTION_ARGS)
 
                ppid = (int32 *) funcctx->user_fctx;
                pid = ppid[call_cntr];
+               elog(DEBUG5, "pg_proctab: accessing process table for pid[%d] %d.",
+                               call_cntr, pid);
 
                /*
                 * Sanity check, make sure we read the pid information that we're
@@ -184,6 +192,7 @@ Datum pg_proctab(PG_FUNCTION_ARGS)
                len = read(fd, buffer, sizeof(buffer) - 1);
                close(fd);
                buffer[len] = '\0';
+               elog(DEBUG5, "pg_proctab: %s", buffer);
 
                values = (char **) palloc(34 * sizeof(char *));
                values[i_pid] = (char *) palloc((INTEGER_LEN + 1) * sizeof(char));