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Overview
Comment:Enhance mptester so that it takes great care to delete its test database prior to start-up, including checking the return code from unlink() and retrying after a delay if unlink() fails. Hopefully this will clear intermittant startup problems on Windows.
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SHA1: 6ea84ec1e02f0a48953bc758027ab7148529c36e
User & Date: drh 2016-02-12 17:27:32
Context
2016-02-12
17:30
Fix a documentation typo. No changes to code. check-in: d9c98587 user: drh tags: trunk
17:27
Enhance mptester so that it takes great care to delete its test database prior to start-up, including checking the return code from unlink() and retrying after a delay if unlink() fails. Hopefully this will clear intermittant startup problems on Windows. check-in: 6ea84ec1 user: drh tags: trunk
05:19
Naming updates for Universal Windows Platform. check-in: 717c1fc4 user: mistachkin tags: trunk
Changes
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Changes to main.mk. 

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		-DSQLITE_ENABLE_MEMSYS5 $(FUZZCHECK_OPT) \
		$(TOP)/test/fuzzcheck.c sqlite3.c $(TLIBS) $(THREADLIB)

mptester$(EXE):	sqlite3.c $(TOP)/mptest/mptest.c
	$(TCCX) -o $@ -I. $(TOP)/mptest/mptest.c sqlite3.c \
		$(TLIBS) $(THREADLIB)

MPTEST1=./mptester$(EXE) mptest.db $(TOP)/mptest/crash01.test --repeat 20
MPTEST2=./mptester$(EXE) mptest.db $(TOP)/mptest/multiwrite01.test --repeat 20
mptest:	mptester$(EXE)
	rm -f mptest.db
	$(MPTEST1) --journalmode DELETE
	$(MPTEST2) --journalmode WAL
	$(MPTEST1) --journalmode WAL
	$(MPTEST2) --journalmode PERSIST
	$(MPTEST1) --journalmode PERSIST
	$(MPTEST2) --journalmode TRUNCATE
	$(MPTEST1) --journalmode TRUNCATE








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		-DSQLITE_ENABLE_MEMSYS5 $(FUZZCHECK_OPT) \
		$(TOP)/test/fuzzcheck.c sqlite3.c $(TLIBS) $(THREADLIB)

mptester$(EXE):	sqlite3.c $(TOP)/mptest/mptest.c
	$(TCCX) -o $@ -I. $(TOP)/mptest/mptest.c sqlite3.c \
		$(TLIBS) $(THREADLIB)

MPTEST1=./mptester$(EXE) mptest1.db $(TOP)/mptest/crash01.test --repeat 20
MPTEST2=./mptester$(EXE) mptest2.db $(TOP)/mptest/multiwrite01.test --repeat 20
mptest:	mptester$(EXE)

	$(MPTEST1) --journalmode DELETE
	$(MPTEST2) --journalmode WAL
	$(MPTEST1) --journalmode WAL
	$(MPTEST2) --journalmode PERSIST
	$(MPTEST1) --journalmode PERSIST
	$(MPTEST2) --journalmode TRUNCATE
	$(MPTEST1) --journalmode TRUNCATE

Changes to mptest/mptest.c. 

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#include <stdio.h>
#if defined(_WIN32)
# define WIN32_LEAN_AND_MEAN
# include <windows.h>
#else
# include <unistd.h>
#endif

#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include <ctype.h>

#define ISSPACE(X) isspace((unsigned char)(X))
#define ISDIGIT(X) isdigit((unsigned char)(X))
................................................................................
static void usage(const char *argv0){
  int i;
  const char *zTail = argv0;
  for(i=0; argv0[i]; i++){
    if( isDirSep(argv0[i]) ) zTail = argv0+i+1;
  }
  fprintf(stderr,"Usage: %s DATABASE ?OPTIONS? ?SCRIPT?\n", zTail);













  exit(1);
}

/* Report on unrecognized arguments */
static void unrecognizedArguments(
  const char *argv0,
  int nArg,
................................................................................
  char *zScript;
  int taskId;
  const char *zTrace;
  const char *zCOption;
  const char *zJMode;
  const char *zNRep;
  int nRep = 1, iRep;



  g.argv0 = argv[0];
  g.iTrace = 1;
  if( argc<2 ) usage(argv[0]);
  g.zDbFile = argv[1];
  if( strglob("*.test", g.zDbFile) ) usage(argv[0]);
  if( strcmp(sqlite3_sourceid(), SQLITE_SOURCE_ID)!=0 ){
................................................................................
  g.zVfs = findOption(argv+2, &n, "vfs", 1);
  zClient = findOption(argv+2, &n, "client", 1);
  g.zErrLog = findOption(argv+2, &n, "errlog", 1);
  g.zLog = findOption(argv+2, &n, "log", 1);
  zTrace = findOption(argv+2, &n, "trace", 1);
  if( zTrace ) g.iTrace = atoi(zTrace);
  if( findOption(argv+2, &n, "quiet", 0)!=0 ) g.iTrace = 0;


  g.bSqlTrace = findOption(argv+2, &n, "sqltrace", 0)!=0;
  g.bSync = findOption(argv+2, &n, "sync", 0)!=0;
  if( g.zErrLog ){
    g.pErrLog = fopen(g.zErrLog, "a");
  }else{
    g.pErrLog = stderr;
  }
................................................................................
  sqlite3_config(SQLITE_CONFIG_LOG, sqlErrorCallback, 0);
  if( zClient ){
    iClient = atoi(zClient);
    if( iClient<1 ) fatalError("illegal client number: %d\n", iClient);
    sqlite3_snprintf(sizeof(g.zName), g.zName, "%05d.client%02d",
                     GETPID(), iClient);
  }else{

    if( g.iTrace>0 ){
      printf("BEGIN: %s", argv[0]);
      for(i=1; i<argc; i++) printf(" %s", argv[i]);
      printf("\n");
      printf("With SQLite " SQLITE_VERSION " " SQLITE_SOURCE_ID "\n" );
      for(i=0; (zCOption = sqlite3_compileoption_get(i))!=0; i++){
        printf("-DSQLITE_%s\n", zCOption);
      }
      fflush(stdout);
    }
    iClient =  0;



    unlink(g.zDbFile);






    openFlags |= SQLITE_OPEN_CREATE;
  }
  rc = sqlite3_open_v2(g.zDbFile, &g.db, openFlags, g.zVfs);
  if( rc ) fatalError("cannot open [%s]", g.zDbFile);


  if( zJMode ){
#if defined(_WIN32)
    if( sqlite3_stricmp(zJMode,"persist")==0
     || sqlite3_stricmp(zJMode,"truncate")==0
    ){
      printf("Changing journal mode to DELETE from %s", zJMode);
      zJMode = "DELETE";








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#include <stdio.h>
#if defined(_WIN32)
# define WIN32_LEAN_AND_MEAN
# include <windows.h>
#else
# include <unistd.h>
#endif
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include <ctype.h>

#define ISSPACE(X) isspace((unsigned char)(X))
#define ISDIGIT(X) isdigit((unsigned char)(X))
................................................................................
static void usage(const char *argv0){
  int i;
  const char *zTail = argv0;
  for(i=0; argv0[i]; i++){
    if( isDirSep(argv0[i]) ) zTail = argv0+i+1;
  }
  fprintf(stderr,"Usage: %s DATABASE ?OPTIONS? ?SCRIPT?\n", zTail);
  fprintf(stderr,
    "Options:\n"
    "   --errlog FILENAME           Write errors to FILENAME\n"
    "   --journalmode MODE          Use MODE as the journal_mode\n"
    "   --log FILENAME              Log messages to FILENAME\n"
    "   --quiet                     Suppress unnecessary output\n"
    "   --vfs NAME                  Use NAME as the VFS\n"
    "   --repeat N                  Repeat the test N times\n"
    "   --sqltrace                  Enable SQL tracing\n"
    "   --sync                      Enable synchronous disk writes\n"
    "   --timeout MILLISEC          Busy timeout is MILLISEC\n"
    "   --trace BOOLEAN             Enable or disable tracing\n"
  );
  exit(1);
}

/* Report on unrecognized arguments */
static void unrecognizedArguments(
  const char *argv0,
  int nArg,
................................................................................
  char *zScript;
  int taskId;
  const char *zTrace;
  const char *zCOption;
  const char *zJMode;
  const char *zNRep;
  int nRep = 1, iRep;
  int iTmout = 0;              /* Default: no timeout */
  const char *zTmout;

  g.argv0 = argv[0];
  g.iTrace = 1;
  if( argc<2 ) usage(argv[0]);
  g.zDbFile = argv[1];
  if( strglob("*.test", g.zDbFile) ) usage(argv[0]);
  if( strcmp(sqlite3_sourceid(), SQLITE_SOURCE_ID)!=0 ){
................................................................................
  g.zVfs = findOption(argv+2, &n, "vfs", 1);
  zClient = findOption(argv+2, &n, "client", 1);
  g.zErrLog = findOption(argv+2, &n, "errlog", 1);
  g.zLog = findOption(argv+2, &n, "log", 1);
  zTrace = findOption(argv+2, &n, "trace", 1);
  if( zTrace ) g.iTrace = atoi(zTrace);
  if( findOption(argv+2, &n, "quiet", 0)!=0 ) g.iTrace = 0;
  zTmout = findOption(argv+2, &n, "timeout", 1);
  if( zTmout ) iTmout = atoi(zTmout);
  g.bSqlTrace = findOption(argv+2, &n, "sqltrace", 0)!=0;
  g.bSync = findOption(argv+2, &n, "sync", 0)!=0;
  if( g.zErrLog ){
    g.pErrLog = fopen(g.zErrLog, "a");
  }else{
    g.pErrLog = stderr;
  }
................................................................................
  sqlite3_config(SQLITE_CONFIG_LOG, sqlErrorCallback, 0);
  if( zClient ){
    iClient = atoi(zClient);
    if( iClient<1 ) fatalError("illegal client number: %d\n", iClient);
    sqlite3_snprintf(sizeof(g.zName), g.zName, "%05d.client%02d",
                     GETPID(), iClient);
  }else{
    int nTry = 0;
    if( g.iTrace>0 ){
      printf("BEGIN: %s", argv[0]);
      for(i=1; i<argc; i++) printf(" %s", argv[i]);
      printf("\n");
      printf("With SQLite " SQLITE_VERSION " " SQLITE_SOURCE_ID "\n" );
      for(i=0; (zCOption = sqlite3_compileoption_get(i))!=0; i++){
        printf("-DSQLITE_%s\n", zCOption);
      }
      fflush(stdout);
    }
    iClient =  0;
    do{
      if( (nTry%5)==4 ) printf("... %strying to unlink '%s'\n",
                               nTry>5 ? "still " : "", g.zDbFile);
      rc = unlink(g.zDbFile);
      if( rc && errno==ENOENT ) rc = 0;
    }while( rc!=0 && (++nTry)<60 && sqlite3_sleep(1000)>0 );
    if( rc!=0 ){
      fatalError("unable to unlink '%s' after %d attempts\n",
                 g.zDbFile, nTry);
    }
    openFlags |= SQLITE_OPEN_CREATE;
  }
  rc = sqlite3_open_v2(g.zDbFile, &g.db, openFlags, g.zVfs);
  if( rc ) fatalError("cannot open [%s]", g.zDbFile);
  if( iTmout>0 ) sqlite3_busy_timeout(g.db, iTmout);
  
  if( zJMode ){
#if defined(_WIN32)
    if( sqlite3_stricmp(zJMode,"persist")==0
     || sqlite3_stricmp(zJMode,"truncate")==0
    ){
      printf("Changing journal mode to DELETE from %s", zJMode);
      zJMode = "DELETE";

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