spccache.h File Reference

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Functions
void	get_tablespace_page_costs (Oid spcid, float8 *spc_random_page_cost, float8 *spc_seq_page_cost)
int	get_tablespace_io_concurrency (Oid spcid)
int	get_tablespace_maintenance_io_concurrency (Oid spcid)

Function Documentation

get_tablespace_io_concurrency()

int get_tablespace_io_concurrency

(

Oid

spcid

)

Definition at line 215 of file spccache.c.

{
    TableSpaceCacheEntry *spc = get_tablespace(spcid);
 
    if (!spc->opts || spc->opts->effective_io_concurrency < 0)
        return effective_io_concurrency;
    else
        return spc->opts->effective_io_concurrency;
}

References effective_io_concurrency, TableSpaceOpts::effective_io_concurrency, get_tablespace(), and TableSpaceCacheEntry::opts.

Referenced by ExecInitBitmapHeapScan(), and read_stream_begin_relation().

get_tablespace_maintenance_io_concurrency()

int get_tablespace_maintenance_io_concurrency

(

Oid

spcid

)

Definition at line 229 of file spccache.c.

{
    TableSpaceCacheEntry *spc = get_tablespace(spcid);
 
    if (!spc->opts || spc->opts->maintenance_io_concurrency < 0)
        return maintenance_io_concurrency;
    else
        return spc->opts->maintenance_io_concurrency;
}

References get_tablespace(), maintenance_io_concurrency, TableSpaceOpts::maintenance_io_concurrency, and TableSpaceCacheEntry::opts.

Referenced by heap_index_delete_tuples(), and read_stream_begin_relation().

get_tablespace_page_costs()

void get_tablespace_page_costs	(	Oid	spcid,
		float8 *	spc_random_page_cost,
		float8 *	spc_seq_page_cost
	)

Definition at line 182 of file spccache.c.

{
    TableSpaceCacheEntry *spc = get_tablespace(spcid);
 
    Assert(spc != NULL);
 
    if (spc_random_page_cost)
    {
        if (!spc->opts || spc->opts->random_page_cost < 0)
            *spc_random_page_cost = random_page_cost;
        else
            *spc_random_page_cost = spc->opts->random_page_cost;
    }
 
    if (spc_seq_page_cost)
    {
        if (!spc->opts || spc->opts->seq_page_cost < 0)
            *spc_seq_page_cost = seq_page_cost;
        else
            *spc_seq_page_cost = spc->opts->seq_page_cost;
    }
}

References Assert, get_tablespace(), TableSpaceCacheEntry::opts, random_page_cost, TableSpaceOpts::random_page_cost, seq_page_cost, and TableSpaceOpts::seq_page_cost.

Referenced by brincostestimate(), cost_bitmap_heap_scan(), cost_index(), cost_samplescan(), cost_seqscan(), cost_tidrangescan(), cost_tidscan(), genericcostestimate(), gincostestimate(), and system_time_samplescangetsamplesize().