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test.c File Reference
#include "postgres.h"
#include "fmgr.h"
#include "miscadmin.h"
#include "pgstat.h"
#include "test_shm_mq.h"
Include dependency graph for test.c:

Go to the source code of this file.

Functions

 PG_FUNCTION_INFO_V1 (test_shm_mq)
 
 PG_FUNCTION_INFO_V1 (test_shm_mq_pipelined)
 
void _PG_init (void)
 
static void verify_message (Size origlen, char *origdata, Size newlen, char *newdata)
 
Datum test_shm_mq (PG_FUNCTION_ARGS)
 
Datum test_shm_mq_pipelined (PG_FUNCTION_ARGS)
 

Variables

 PG_MODULE_MAGIC
 

Function Documentation

void _PG_init ( void  )

Definition at line 56 of file auth_delay.c.

References add_int_reloption(), add_reloption_kind(), AssertVariableIsOfType, auth_delay_checks(), auth_delay_milliseconds, auto_explain_log_analyze, auto_explain_log_buffers, auto_explain_log_format, auto_explain_log_min_duration, auto_explain_log_nested_statements, auto_explain_log_timing, auto_explain_log_triggers, auto_explain_log_verbose, auto_explain_sample_rate, BackgroundWorker::bgw_flags, BackgroundWorker::bgw_main, BackgroundWorker::bgw_main_arg, BGW_MAXLEN, BackgroundWorker::bgw_name, BGW_NEVER_RESTART, BackgroundWorker::bgw_notify_pid, BackgroundWorker::bgw_restart_time, BackgroundWorker::bgw_start_time, BGWORKER_BACKEND_DATABASE_CONNECTION, BGWORKER_SHMEM_ACCESS, BgWorkerStart_RecoveryFinished, bl_relopt_kind, buf, check_password(), check_password_hook, ClientAuthentication_hook, DEFAULT_BLOOM_BITS, DEFAULT_BLOOM_LENGTH, DefineCustomBoolVariable(), DefineCustomEnumVariable(), DefineCustomIntVariable(), DefineCustomRealVariable(), DefineCustomStringVariable(), dummy_object_relabel(), elog, EmitWarningsOnPlaceholders(), HASHCTL::entrysize, ereport, errcode(), errmsg(), ERROR, ExecutorCheckPerms_hook, ExecutorEnd_hook, ExecutorFinish_hook, ExecutorRun_hook, ExecutorStart_hook, explain_ExecutorEnd(), explain_ExecutorFinish(), explain_ExecutorRun(), explain_ExecutorStart(), EXPLAIN_FORMAT_TEXT, find_rendezvous_variable(), gettext_noop, GUC_LIST_INPUT, GUC_NOT_IN_SAMPLE, GUC_UNIT_MS, HASH_BLOBS, hash_create(), HASH_ELEM, hstoreCheckKeyLen, hstoreCheckKeyLen_p, hstoreCheckValLen, hstoreCheckValLen_p, hstorePairs, hstorePairs_p, hstoreUniquePairs, hstoreUniquePairs_p, hstoreUpgrade, hstoreUpgrade_p, i, INDEX_MAX_KEYS, Int32GetDatum, IsUnderPostmaster, HASHCTL::keysize, load_external_function(), MAX_BLOOM_BITS, MAX_BLOOM_LENGTH, MemoryContextStrdup(), next_exec_check_perms_hook, next_object_access_hook, next_ProcessUtility_hook, NULL, object_access_hook, relopt_parse_elt::offset, offsetof, relopt_parse_elt::optname, relopt_parse_elt::opttype, original_client_auth_hook, pg_bindtextdomain(), PGC_POSTMASTER, PGC_SIGHUP, PGC_SUSET, PGC_USERSET, pgss_ExecutorEnd(), pgss_ExecutorFinish(), pgss_ExecutorRun(), pgss_ExecutorStart(), pgss_max, pgss_memsize(), pgss_post_parse_analyze(), pgss_ProcessUtility(), pgss_save, pgss_shmem_startup(), pgss_track, PGSS_TRACK_TOP, pgss_track_utility, plperl_held_interp, plperl_init_interp(), plperl_on_init, plperl_on_plperl_init, plperl_on_plperlu_init, plperl_opmask, plperl_use_strict, plpgsql_check_asserts, plpgsql_extra_checks_check_hook(), plpgsql_extra_errors_assign_hook(), plpgsql_extra_errors_string, plpgsql_extra_warnings_assign_hook(), plpgsql_extra_warnings_string, plpgsql_HashTableInit(), plpgsql_print_strict_params, PLPGSQL_RESOLVE_ERROR, plpgsql_subxact_cb(), plpgsql_variable_conflict, plpgsql_xact_cb(), plpython_version_bitmask, plpython_version_bitmask_ptr, pltcl_AlertNotifier(), pltcl_CreateFileHandler(), pltcl_DeleteFileHandler(), pltcl_FinalizeNotifier(), pltcl_hold_interp, pltcl_InitNotifier(), pltcl_pm_init_done, pltcl_ServiceModeHook(), pltcl_SetTimer(), pltcl_WaitForEvent(), PLyObject_AsString, PLyObject_AsString_p, PLyUnicode_FromStringAndSize, post_parse_analyze_hook, PQWalReceiverFunctions, prev_ExecutorEnd, prev_ExecutorFinish, prev_ExecutorRun, prev_ExecutorStart, prev_post_parse_analyze_hook, prev_ProcessUtility, prev_row_security_policy_hook_permissive, prev_row_security_policy_hook_restrictive, prev_shmem_startup_hook, process_shared_preload_libraries_in_progress, ProcessUtility_hook, register_label_provider(), RegisterBackgroundWorker(), RegisterSubXactCallback(), RegisterXactCallback(), RELOPT_TYPE_INT, RequestAddinShmemSpace(), RequestNamedLWLockTranche(), row_security_policy_hook_permissive, row_security_policy_hook_restrictive, sepgsql_avc_init(), sepgsql_debug_audit, sepgsql_exec_check_perms(), sepgsql_init_client_label(), SEPGSQL_LABEL_TAG, SEPGSQL_MODE_DISABLED, sepgsql_object_access(), sepgsql_object_relabel(), sepgsql_permissive, sepgsql_set_mode(), sepgsql_utility_command(), shmem_startup_hook, similarity_threshold, snprintf(), test_rls_hooks_permissive(), test_rls_hooks_restrictive(), TEXTDOMAIN, TopMemoryContext, WalReceiverFunctions, word_similarity_threshold, and worker_spi_main().

57 {
58  /* Define custom GUC variables */
59  DefineCustomIntVariable("auth_delay.milliseconds",
60  "Milliseconds to delay before reporting authentication failure",
61  NULL,
63  0,
64  0, INT_MAX / 1000,
65  PGC_SIGHUP,
67  NULL,
68  NULL,
69  NULL);
70  /* Install Hooks */
73 }
void DefineCustomIntVariable(const char *name, const char *short_desc, const char *long_desc, int *valueAddr, int bootValue, int minValue, int maxValue, GucContext context, int flags, GucIntCheckHook check_hook, GucIntAssignHook assign_hook, GucShowHook show_hook)
Definition: guc.c:7709
ClientAuthentication_hook_type ClientAuthentication_hook
Definition: auth.c:226
static ClientAuthentication_hook_type original_client_auth_hook
Definition: auth_delay.c:29
Definition: guc.h:72
static void auth_delay_checks(Port *port, int status)
Definition: auth_delay.c:35
#define NULL
Definition: c.h:226
static int auth_delay_milliseconds
Definition: auth_delay.c:26
#define GUC_UNIT_MS
Definition: guc.h:224
PG_FUNCTION_INFO_V1 ( test_shm_mq  )
PG_FUNCTION_INFO_V1 ( test_shm_mq_pipelined  )
Datum test_shm_mq ( PG_FUNCTION_ARGS  )

Definition at line 41 of file test.c.

References dsm_detach(), ereport, errcode(), errmsg(), ERROR, PG_GETARG_INT32, PG_GETARG_INT64, PG_GETARG_TEXT_PP, PG_RETURN_VOID, shm_mq_receive(), shm_mq_send(), SHM_MQ_SUCCESS, test_shm_mq_setup(), VARDATA_ANY, VARSIZE_ANY_EXHDR, and verify_message().

42 {
43  int64 queue_size = PG_GETARG_INT64(0);
44  text *message = PG_GETARG_TEXT_PP(1);
45  char *message_contents = VARDATA_ANY(message);
46  int message_size = VARSIZE_ANY_EXHDR(message);
47  int32 loop_count = PG_GETARG_INT32(2);
48  int32 nworkers = PG_GETARG_INT32(3);
49  dsm_segment *seg;
50  shm_mq_handle *outqh;
51  shm_mq_handle *inqh;
52  shm_mq_result res;
53  Size len;
54  void *data;
55 
56  /* A negative loopcount is nonsensical. */
57  if (loop_count < 0)
58  ereport(ERROR,
59  (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
60  errmsg("repeat count size must be a non-negative integer")));
61 
62  /*
63  * Since this test sends data using the blocking interfaces, it cannot
64  * send data to itself. Therefore, a minimum of 1 worker is required. Of
65  * course, a negative worker count is nonsensical.
66  */
67  if (nworkers < 1)
68  ereport(ERROR,
69  (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
70  errmsg("number of workers must be a positive integer")));
71 
72  /* Set up dynamic shared memory segment and background workers. */
73  test_shm_mq_setup(queue_size, nworkers, &seg, &outqh, &inqh);
74 
75  /* Send the initial message. */
76  res = shm_mq_send(outqh, message_size, message_contents, false);
77  if (res != SHM_MQ_SUCCESS)
78  ereport(ERROR,
79  (errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
80  errmsg("could not send message")));
81 
82  /*
83  * Receive a message and send it back out again. Do this a number of
84  * times equal to the loop count.
85  */
86  for (;;)
87  {
88  /* Receive a message. */
89  res = shm_mq_receive(inqh, &len, &data, false);
90  if (res != SHM_MQ_SUCCESS)
91  ereport(ERROR,
92  (errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
93  errmsg("could not receive message")));
94 
95  /* If this is supposed to be the last iteration, stop here. */
96  if (--loop_count <= 0)
97  break;
98 
99  /* Send it back out. */
100  res = shm_mq_send(outqh, len, data, false);
101  if (res != SHM_MQ_SUCCESS)
102  ereport(ERROR,
103  (errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
104  errmsg("could not send message")));
105  }
106 
107  /*
108  * Finally, check that we got back the same message from the last
109  * iteration that we originally sent.
110  */
111  verify_message(message_size, message_contents, len, data);
112 
113  /* Clean up. */
114  dsm_detach(seg);
115 
116  PG_RETURN_VOID();
117 }
#define PG_GETARG_INT32(n)
Definition: fmgr.h:225
#define VARDATA_ANY(PTR)
Definition: postgres.h:349
int errcode(int sqlerrcode)
Definition: elog.c:575
signed int int32
Definition: c.h:253
#define PG_GETARG_TEXT_PP(n)
Definition: fmgr.h:270
#define ERROR
Definition: elog.h:43
static void verify_message(Size origlen, char *origdata, Size newlen, char *newdata)
Definition: test.c:250
#define ereport(elevel, rest)
Definition: elog.h:122
shm_mq_result
Definition: shm_mq.h:36
#define PG_RETURN_VOID()
Definition: fmgr.h:293
size_t Size
Definition: c.h:353
shm_mq_result shm_mq_send(shm_mq_handle *mqh, Size nbytes, const void *data, bool nowait)
Definition: shm_mq.c:321
void dsm_detach(dsm_segment *seg)
Definition: dsm.c:714
#define VARSIZE_ANY_EXHDR(PTR)
Definition: postgres.h:342
int errmsg(const char *fmt,...)
Definition: elog.c:797
Definition: c.h:435
shm_mq_result shm_mq_receive(shm_mq_handle *mqh, Size *nbytesp, void **datap, bool nowait)
Definition: shm_mq.c:518
#define PG_GETARG_INT64(n)
Definition: fmgr.h:238
void test_shm_mq_setup(int64 queue_size, int32 nworkers, dsm_segment **segp, shm_mq_handle **output, shm_mq_handle **input)
Definition: setup.c:49
Datum test_shm_mq_pipelined ( PG_FUNCTION_ARGS  )

Definition at line 130 of file test.c.

References CHECK_FOR_INTERRUPTS, dsm_detach(), ereport, errcode(), errmsg(), ERROR, MyLatch, PG_GETARG_BOOL, PG_GETARG_INT32, PG_GETARG_INT64, PG_GETARG_TEXT_PP, PG_RETURN_VOID, PG_WAIT_EXTENSION, ResetLatch(), SHM_MQ_DETACHED, shm_mq_receive(), shm_mq_send(), SHM_MQ_SUCCESS, test_shm_mq_setup(), VARDATA_ANY, VARSIZE_ANY_EXHDR, verify_message(), WaitLatch(), and WL_LATCH_SET.

131 {
132  int64 queue_size = PG_GETARG_INT64(0);
133  text *message = PG_GETARG_TEXT_PP(1);
134  char *message_contents = VARDATA_ANY(message);
135  int message_size = VARSIZE_ANY_EXHDR(message);
136  int32 loop_count = PG_GETARG_INT32(2);
137  int32 nworkers = PG_GETARG_INT32(3);
138  bool verify = PG_GETARG_BOOL(4);
139  int32 send_count = 0;
140  int32 receive_count = 0;
141  dsm_segment *seg;
142  shm_mq_handle *outqh;
143  shm_mq_handle *inqh;
144  shm_mq_result res;
145  Size len;
146  void *data;
147 
148  /* A negative loopcount is nonsensical. */
149  if (loop_count < 0)
150  ereport(ERROR,
151  (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
152  errmsg("repeat count size must be a non-negative integer")));
153 
154  /*
155  * Using the nonblocking interfaces, we can even send data to ourselves,
156  * so the minimum number of workers for this test is zero.
157  */
158  if (nworkers < 0)
159  ereport(ERROR,
160  (errcode(ERRCODE_INVALID_PARAMETER_VALUE),
161  errmsg("number of workers must be a non-negative integer")));
162 
163  /* Set up dynamic shared memory segment and background workers. */
164  test_shm_mq_setup(queue_size, nworkers, &seg, &outqh, &inqh);
165 
166  /* Main loop. */
167  for (;;)
168  {
169  bool wait = true;
170 
171  /*
172  * If we haven't yet sent the message the requisite number of times,
173  * try again to send it now. Note that when shm_mq_send() returns
174  * SHM_MQ_WOULD_BLOCK, the next call to that function must pass the
175  * same message size and contents; that's not an issue here because
176  * we're sending the same message every time.
177  */
178  if (send_count < loop_count)
179  {
180  res = shm_mq_send(outqh, message_size, message_contents, true);
181  if (res == SHM_MQ_SUCCESS)
182  {
183  ++send_count;
184  wait = false;
185  }
186  else if (res == SHM_MQ_DETACHED)
187  ereport(ERROR,
188  (errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
189  errmsg("could not send message")));
190  }
191 
192  /*
193  * If we haven't yet received the message the requisite number of
194  * times, try to receive it again now.
195  */
196  if (receive_count < loop_count)
197  {
198  res = shm_mq_receive(inqh, &len, &data, true);
199  if (res == SHM_MQ_SUCCESS)
200  {
201  ++receive_count;
202  /* Verifying every time is slow, so it's optional. */
203  if (verify)
204  verify_message(message_size, message_contents, len, data);
205  wait = false;
206  }
207  else if (res == SHM_MQ_DETACHED)
208  ereport(ERROR,
209  (errcode(ERRCODE_OBJECT_NOT_IN_PREREQUISITE_STATE),
210  errmsg("could not receive message")));
211  }
212  else
213  {
214  /*
215  * Otherwise, we've received the message enough times. This
216  * shouldn't happen unless we've also sent it enough times.
217  */
218  if (send_count != receive_count)
219  ereport(ERROR,
220  (errcode(ERRCODE_INTERNAL_ERROR),
221  errmsg("message sent %d times, but received %d times",
222  send_count, receive_count)));
223  break;
224  }
225 
226  if (wait)
227  {
228  /*
229  * If we made no progress, wait for one of the other processes to
230  * which we are connected to set our latch, indicating that they
231  * have read or written data and therefore there may now be work
232  * for us to do.
233  */
237  }
238  }
239 
240  /* Clean up. */
241  dsm_detach(seg);
242 
243  PG_RETURN_VOID();
244 }
#define PG_GETARG_INT32(n)
Definition: fmgr.h:225
#define VARDATA_ANY(PTR)
Definition: postgres.h:349
int errcode(int sqlerrcode)
Definition: elog.c:575
#define PG_GETARG_BOOL(n)
Definition: fmgr.h:230
void ResetLatch(volatile Latch *latch)
Definition: latch.c:461
signed int int32
Definition: c.h:253
#define PG_GETARG_TEXT_PP(n)
Definition: fmgr.h:270
int WaitLatch(volatile Latch *latch, int wakeEvents, long timeout, uint32 wait_event_info)
Definition: latch.c:300
#define ERROR
Definition: elog.h:43
static void verify_message(Size origlen, char *origdata, Size newlen, char *newdata)
Definition: test.c:250
#define ereport(elevel, rest)
Definition: elog.h:122
#define PG_WAIT_EXTENSION
Definition: pgstat.h:723
shm_mq_result
Definition: shm_mq.h:36
#define PG_RETURN_VOID()
Definition: fmgr.h:293
size_t Size
Definition: c.h:353
shm_mq_result shm_mq_send(shm_mq_handle *mqh, Size nbytes, const void *data, bool nowait)
Definition: shm_mq.c:321
void dsm_detach(dsm_segment *seg)
Definition: dsm.c:714
#define VARSIZE_ANY_EXHDR(PTR)
Definition: postgres.h:342
int errmsg(const char *fmt,...)
Definition: elog.c:797
struct Latch * MyLatch
Definition: globals.c:51
Definition: c.h:435
#define CHECK_FOR_INTERRUPTS()
Definition: miscadmin.h:97
shm_mq_result shm_mq_receive(shm_mq_handle *mqh, Size *nbytesp, void **datap, bool nowait)
Definition: shm_mq.c:518
#define PG_GETARG_INT64(n)
Definition: fmgr.h:238
#define WL_LATCH_SET
Definition: latch.h:124
void test_shm_mq_setup(int64 queue_size, int32 nworkers, dsm_segment **segp, shm_mq_handle **output, shm_mq_handle **input)
Definition: setup.c:49
static void verify_message ( Size  origlen,
char *  origdata,
Size  newlen,
char *  newdata 
)
static

Definition at line 250 of file test.c.

References ereport, errdetail(), errmsg(), ERROR, and i.

Referenced by test_shm_mq(), and test_shm_mq_pipelined().

251 {
252  Size i;
253 
254  if (origlen != newlen)
255  ereport(ERROR,
256  (errmsg("message corrupted"),
257  errdetail("The original message was %zu bytes but the final message is %zu bytes.",
258  origlen, newlen)));
259 
260  for (i = 0; i < origlen; ++i)
261  if (origdata[i] != newdata[i])
262  ereport(ERROR,
263  (errmsg("message corrupted"),
264  errdetail("The new and original messages differ at byte %zu of %zu.", i, origlen)));
265 }
#define ERROR
Definition: elog.h:43
int errdetail(const char *fmt,...)
Definition: elog.c:873
#define ereport(elevel, rest)
Definition: elog.h:122
size_t Size
Definition: c.h:353
int errmsg(const char *fmt,...)
Definition: elog.c:797
int i

Variable Documentation

PG_MODULE_MAGIC

Definition at line 22 of file test.c.