From b8a721149b190dc09c00620f65cb85b190b83d45 Mon Sep 17 00:00:00 2001
From: Robert Haas <rhaas@postgresql.org>
Date: Mon, 7 Apr 2014 10:40:47 -0400
Subject: [PATCH] Remove ipc_test.
This doesn't seem to be useful any more, and it's not really worth the
effort to keep updating it every time relevant dependencies or calling
signatures in the shared memory or semaphore code change.
---
src/backend/port/Makefile | 4 -
src/backend/port/ipc_test.c | 334 ------------------------------------
2 files changed, 338 deletions(-)
delete mode 100644 src/backend/port/ipc_test.c
diff --git a/src/backend/port/Makefile b/src/backend/port/Makefile
index 8ebb6d57037..bfb19add88f 100644
--- a/src/backend/port/Makefile
+++ b/src/backend/port/Makefile
@@ -42,10 +42,6 @@ else
$(CC) $(CFLAGS) -c $<
endif
-# IPC test program
-ipc_test: ipc_test.o pg_sema.o pg_shmem.o
- $(CC) $(CFLAGS) $(LDFLAGS) $(LDFLAGS_EX) $(export_dynamic) $^ $(LIBS) -o $@
-
distclean clean:
rm -f ipc_test ipc_test.o tas_cpp.s
$(MAKE) -C darwin clean
diff --git a/src/backend/port/ipc_test.c b/src/backend/port/ipc_test.c
deleted file mode 100644
index 62599193c33..00000000000
--- a/src/backend/port/ipc_test.c
+++ /dev/null
@@ -1,334 +0,0 @@
-/*-------------------------------------------------------------------------
- *
- * ipc_test.c
- * Simplistic testbed for shared memory and semaphore code.
- *
- * This file allows for quick "smoke testing" of a PG semaphore or shared
- * memory implementation, with less overhead than compiling up a whole
- * installation. To use:
- * 1. Run configure, then edit src/include/pg_config.h to select the
- * USE_xxx_SEMAPHORES and USE_xxx_SHARED_MEMORY settings you want.
- * Also, adjust the pg_sema.c and pg_shmem.c symlinks in
- * src/backend/port/ if needed.
- * 2. In src/backend/port/, do "make ipc_test".
- * 3. Run ipc_test and see if it works.
- * 4. If it seems to work, try building the whole system and running
- * the parallel regression tests for a more complete test.
- *
- *
- * Portions Copyright (c) 1996-2014, PostgreSQL Global Development Group
- * Portions Copyright (c) 1994, Regents of the University of California
- *
- *
- * IDENTIFICATION
- * src/backend/port/ipc_test.c
- *
- *-------------------------------------------------------------------------
- */
-#include "postgres.h"
-
-#include <unistd.h>
-
-#include "miscadmin.h"
-#include "storage/ipc.h"
-#include "storage/pg_sema.h"
-#include "storage/pg_shmem.h"
-
-
-/********* stuff needed to satisfy references in shmem/sema code *********/
-
-
-volatile bool InterruptPending = false;
-volatile bool QueryCancelPending = false;
-volatile bool ProcDiePending = false;
-volatile bool ImmediateInterruptOK = false;
-volatile uint32 InterruptHoldoffCount = 0;
-volatile uint32 CritSectionCount = 0;
-
-bool IsUnderPostmaster = false;
-bool assert_enabled = true;
-
-int MaxBackends = 32;
-int NBuffers = 64;
-
-char *DataDir = ".";
-
-
-#define MAX_ON_EXITS 20
-
-static struct ONEXIT
-{
- pg_on_exit_callback function;
- Datum arg;
-} on_proc_exit_list[MAX_ON_EXITS], on_shmem_exit_list[MAX_ON_EXITS];
-
-static int on_proc_exit_index,
- on_shmem_exit_index;
-
-void
-proc_exit(int code)
-{
- shmem_exit(code);
- while (--on_proc_exit_index >= 0)
- (*on_proc_exit_list[on_proc_exit_index].function) (code,
- on_proc_exit_list[on_proc_exit_index].arg);
- exit(code);
-}
-
-void
-shmem_exit(int code)
-{
- while (--on_shmem_exit_index >= 0)
- (*on_shmem_exit_list[on_shmem_exit_index].function) (code,
- on_shmem_exit_list[on_shmem_exit_index].arg);
- on_shmem_exit_index = 0;
-}
-
-void
-on_shmem_exit(pg_on_exit_callback function, Datum arg)
-{
- if (on_shmem_exit_index >= MAX_ON_EXITS)
- elog(FATAL, "out of on_shmem_exit slots");
-
- on_shmem_exit_list[on_shmem_exit_index].function = function;
- on_shmem_exit_list[on_shmem_exit_index].arg = arg;
-
- ++on_shmem_exit_index;
-}
-
-void
-on_exit_reset(void)
-{
- on_shmem_exit_index = 0;
- on_proc_exit_index = 0;
-}
-
-void
-AddToDataDirLockFile(int target_line, const char *str)
-{
-}
-
-void
-ProcessInterrupts(void)
-{
-}
-
-void
-ExceptionalCondition(const char *conditionName,
- const char *errorType,
- const char *fileName,
- int lineNumber)
-{
- fprintf(stderr, "TRAP: %s(\"%s\", File: \"%s\", Line: %d)\n",
- errorType, conditionName,
- fileName, lineNumber);
- abort();
-}
-
-
-int
-errcode_for_file_access(void)
-{
- return 0;
-}
-
-bool
-errstart(int elevel, const char *filename, int lineno,
- const char *funcname, const char *domain)
-{
- return (elevel >= ERROR);
-}
-
-void
-errfinish(int dummy,...)
-{
- proc_exit(1);
-}
-
-void
-elog_start(const char *filename, int lineno, const char *funcname)
-{
-}
-
-void
-elog_finish(int elevel, const char *fmt,...)
-{
- fprintf(stderr, "ERROR: %s\n", fmt);
- proc_exit(1);
-}
-
-int
-errcode(int sqlerrcode)
-{
- return 0; /* return value does not matter */
-}
-
-int
-errmsg(const char *fmt,...)
-{
- fprintf(stderr, "ERROR: %s\n", fmt);
- return 0; /* return value does not matter */
-}
-
-int
-errmsg_internal(const char *fmt,...)
-{
- fprintf(stderr, "ERROR: %s\n", fmt);
- return 0; /* return value does not matter */
-}
-
-int
-errdetail(const char *fmt,...)
-{
- fprintf(stderr, "DETAIL: %s\n", fmt);
- return 0; /* return value does not matter */
-}
-
-int
-errdetail_log(const char *fmt,...)
-{
- fprintf(stderr, "DETAIL: %s\n", fmt);
- return 0; /* return value does not matter */
-}
-
-int
-errhint(const char *fmt,...)
-{
- fprintf(stderr, "HINT: %s\n", fmt);
- return 0; /* return value does not matter */
-}
-
-
-/********* here's the actual test *********/
-
-
-typedef struct MyStorage
-{
- PGShmemHeader header;
- int flag;
- PGSemaphoreData sem;
-} MyStorage;
-
-
-int
-main(int argc, char **argv)
-{
- MyStorage *storage;
- int cpid;
-
- printf("Creating shared memory ... ");
- fflush(stdout);
-
- storage = (MyStorage *) PGSharedMemoryCreate(8192, false, 5433);
-
- storage->flag = 1234;
-
- printf("OK\n");
-
- printf("Creating semaphores ... ");
- fflush(stdout);
-
- PGReserveSemaphores(2, 5433);
-
- PGSemaphoreCreate(&storage->sem);
-
- printf("OK\n");
-
- /* sema initial value is 1, so lock should work */
-
- printf("Testing Lock ... ");
- fflush(stdout);
-
- PGSemaphoreLock(&storage->sem, false);
-
- printf("OK\n");
-
- /* now sema value is 0, so trylock should fail */
-
- printf("Testing TryLock ... ");
- fflush(stdout);
-
- if (PGSemaphoreTryLock(&storage->sem))
- printf("unexpected result!\n");
- else
- printf("OK\n");
-
- /* unlocking twice and then locking twice should work... */
-
- printf("Testing Multiple Lock ... ");
- fflush(stdout);
-
- PGSemaphoreUnlock(&storage->sem);
- PGSemaphoreUnlock(&storage->sem);
-
- PGSemaphoreLock(&storage->sem, false);
- PGSemaphoreLock(&storage->sem, false);
-
- printf("OK\n");
-
- /* check Reset too */
-
- printf("Testing Reset ... ");
- fflush(stdout);
-
- PGSemaphoreUnlock(&storage->sem);
-
- PGSemaphoreReset(&storage->sem);
-
- if (PGSemaphoreTryLock(&storage->sem))
- printf("unexpected result!\n");
- else
- printf("OK\n");
-
- /* Fork a child process and see if it can communicate */
-
- printf("Forking child process ... ");
- fflush(stdout);
-
- cpid = fork();
- if (cpid == 0)
- {
- /* In child */
- on_exit_reset();
- sleep(3);
- storage->flag++;
- PGSemaphoreUnlock(&storage->sem);
- proc_exit(0);
- }
- if (cpid < 0)
- {
- /* Fork failed */
- printf("failed: %s\n", strerror(errno));
- proc_exit(1);
- }
-
- printf("forked child PID %d OK\n", cpid);
-
- if (storage->flag != 1234)
- printf("Wrong value found in shared memory!\n");
-
- printf("Waiting for child (should wait 3 sec here) ... ");
- fflush(stdout);
-
- PGSemaphoreLock(&storage->sem, false);
-
- printf("OK\n");
-
- if (storage->flag != 1235)
- printf("Wrong value found in shared memory!\n");
-
- /* Test shutdown */
-
- printf("Running shmem_exit processing ... ");
- fflush(stdout);
-
- shmem_exit(0);
-
- printf("OK\n");
-
- printf("Tests complete.\n");
-
- proc_exit(0);
-
- return 0; /* not reached */
-}
--
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