database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-07-28 23:42:10 +03:00
Code Activity

pgindent run for 9.5

Browse Source
This commit is contained in:
Bruce Momjian
2015-05-23 21:35:49 -04:00
parent 225892552b
commit 807b9e0dff
414 changed files with 5810 additions and 5308 deletions
Download Patch File Download Diff File Expand all files Collapse all files

73
contrib/tsm_system_rows/tsm_system_rows.c
View File

@ -33,14 +33,14 @@ PG_MODULE_MAGIC;
typedef struct
{
SamplerRandomState randstate;
uint32 seed; /* random seed */
BlockNumber nblocks; /* number of block in relation */
int32 ntuples; /* number of tuples to return */
int32 donetuples; /* tuples already returned */
OffsetNumber lt; /* last tuple returned from current block */
BlockNumber step; /* step size */
BlockNumber lb; /* last block visited */
BlockNumber doneblocks; /* number of already returned blocks */
uint32 seed; /* random seed */
BlockNumber nblocks; /* number of block in relation */
int32 ntuples; /* number of tuples to return */
int32 donetuples; /* tuples already returned */
OffsetNumber lt; /* last tuple returned from current block */
BlockNumber step; /* step size */
BlockNumber lb; /* last block visited */
BlockNumber doneblocks; /* number of already returned blocks */
} SystemSamplerData;
@ -60,11 +60,11 @@ static uint32 random_relative_prime(uint32 n, SamplerRandomState randstate);
Datum
tsm_system_rows_init(PG_FUNCTION_ARGS)
{
TableSampleDesc *tsdesc = (TableSampleDesc *) PG_GETARG_POINTER(0);
uint32 seed = PG_GETARG_UINT32(1);
int32 ntuples = PG_ARGISNULL(2) ? -1 : PG_GETARG_INT32(2);
HeapScanDesc scan = tsdesc->heapScan;
SystemSamplerData *sampler;
TableSampleDesc *tsdesc = (TableSampleDesc *) PG_GETARG_POINTER(0);
uint32 seed = PG_GETARG_UINT32(1);
int32 ntuples = PG_ARGISNULL(2) ? -1 : PG_GETARG_INT32(2);
HeapScanDesc scan = tsdesc->heapScan;
SystemSamplerData *sampler;
if (ntuples < 1)
ereport(ERROR,
@ -86,6 +86,7 @@ tsm_system_rows_init(PG_FUNCTION_ARGS)
/* Find relative prime as step size for linear probing. */
sampler->step = random_relative_prime(sampler->nblocks, sampler->randstate);
/*
* Randomize start position so that blocks close to step size don't have
* higher probability of being chosen on very short scan.
@ -106,8 +107,8 @@ tsm_system_rows_init(PG_FUNCTION_ARGS)
Datum
tsm_system_rows_nextblock(PG_FUNCTION_ARGS)
{
TableSampleDesc *tsdesc = (TableSampleDesc *) PG_GETARG_POINTER(0);
SystemSamplerData *sampler = (SystemSamplerData *) tsdesc->tsmdata;
TableSampleDesc *tsdesc = (TableSampleDesc *) PG_GETARG_POINTER(0);
SystemSamplerData *sampler = (SystemSamplerData *) tsdesc->tsmdata;
sampler->lb = (sampler->lb + sampler->step) % sampler->nblocks;
sampler->doneblocks++;
@ -127,10 +128,10 @@ tsm_system_rows_nextblock(PG_FUNCTION_ARGS)
Datum
tsm_system_rows_nexttuple(PG_FUNCTION_ARGS)
{
TableSampleDesc *tsdesc = (TableSampleDesc *) PG_GETARG_POINTER(0);
OffsetNumber maxoffset = PG_GETARG_UINT16(2);
SystemSamplerData *sampler = (SystemSamplerData *) tsdesc->tsmdata;
OffsetNumber tupoffset = sampler->lt;
TableSampleDesc *tsdesc = (TableSampleDesc *) PG_GETARG_POINTER(0);
OffsetNumber maxoffset = PG_GETARG_UINT16(2);
SystemSamplerData *sampler = (SystemSamplerData *) tsdesc->tsmdata;
OffsetNumber tupoffset = sampler->lt;
if (tupoffset == InvalidOffsetNumber)
tupoffset = FirstOffsetNumber;
@ -152,9 +153,9 @@ tsm_system_rows_nexttuple(PG_FUNCTION_ARGS)
Datum
tsm_system_rows_examinetuple(PG_FUNCTION_ARGS)
{
TableSampleDesc *tsdesc = (TableSampleDesc *) PG_GETARG_POINTER(0);
bool visible = PG_GETARG_BOOL(3);
SystemSamplerData *sampler = (SystemSamplerData *) tsdesc->tsmdata;
TableSampleDesc *tsdesc = (TableSampleDesc *) PG_GETARG_POINTER(0);
bool visible = PG_GETARG_BOOL(3);
SystemSamplerData *sampler = (SystemSamplerData *) tsdesc->tsmdata;
if (!visible)
PG_RETURN_BOOL(false);
@ -183,8 +184,8 @@ tsm_system_rows_end(PG_FUNCTION_ARGS)
Datum
tsm_system_rows_reset(PG_FUNCTION_ARGS)
{
TableSampleDesc *tsdesc = (TableSampleDesc *) PG_GETARG_POINTER(0);
SystemSamplerData *sampler = (SystemSamplerData *) tsdesc->tsmdata;
TableSampleDesc *tsdesc = (TableSampleDesc *) PG_GETARG_POINTER(0);
SystemSamplerData *sampler = (SystemSamplerData *) tsdesc->tsmdata;
sampler->lt = InvalidOffsetNumber;
sampler->donetuples = 0;
@ -203,14 +204,14 @@ tsm_system_rows_reset(PG_FUNCTION_ARGS)
Datum
tsm_system_rows_cost(PG_FUNCTION_ARGS)
{
PlannerInfo *root = (PlannerInfo *) PG_GETARG_POINTER(0);
Path *path = (Path *) PG_GETARG_POINTER(1);
RelOptInfo *baserel = (RelOptInfo *) PG_GETARG_POINTER(2);
List *args = (List *) PG_GETARG_POINTER(3);
BlockNumber *pages = (BlockNumber *) PG_GETARG_POINTER(4);
double *tuples = (double *) PG_GETARG_POINTER(5);
Node *limitnode;
int32 ntuples;
PlannerInfo *root = (PlannerInfo *) PG_GETARG_POINTER(0);
Path *path = (Path *) PG_GETARG_POINTER(1);
RelOptInfo *baserel = (RelOptInfo *) PG_GETARG_POINTER(2);
List *args = (List *) PG_GETARG_POINTER(3);
BlockNumber *pages = (BlockNumber *) PG_GETARG_POINTER(4);
double *tuples = (double *) PG_GETARG_POINTER(5);
Node *limitnode;
int32 ntuples;
limitnode = linitial(args);
limitnode = estimate_expression_value(root, limitnode);
@ -235,9 +236,9 @@ tsm_system_rows_cost(PG_FUNCTION_ARGS)
static uint32
gcd (uint32 a, uint32 b)
gcd(uint32 a, uint32 b)
{
uint32 c;
uint32 c;
while (a != 0)
{
@ -253,8 +254,8 @@ static uint32
random_relative_prime(uint32 n, SamplerRandomState randstate)
{
/* Pick random starting number, with some limits on what it can be. */
uint32 r = (uint32) sampler_random_fract(randstate) * n/2 + n/4,
t;
uint32 r = (uint32) sampler_random_fract(randstate) * n / 2 + n / 4,
t;
/*
* This should only take 2 or 3 iterations as the probability of 2 numbers