#283316

r/sr/a=mkaply - OS/2 only
From Andy Willis/Andrew MacIntyre - OS/2 SQLite support

db/sqlite3/src/Makefile.in

@@ -72,6 +72,7 @@ CSRCS = \
 	os_test.c \
 	os_unix.c \
 	os_win.c \
+	os_os2.c \
 	pager.c \
 	parse.c \
 	pragma.c \

db/sqlite3/src/os_os2.c

@@ -0,0 +1,685 @@
+/*
+** 2001 September 16
+**
+** The author disclaims copyright to this source code.  In place of
+** a legal notice, here is a blessing:
+**
+**    May you do good and not evil.
+**    May you find forgiveness for yourself and forgive others.
+**    May you share freely, never taking more than you give.
+**
+******************************************************************************
+**
+** This file contains code that is specific to particular operating
+** systems.  The purpose of this file is to provide a uniform abstraction
+** on which the rest of SQLite can operate.
+*/
+#include "sqliteInt.h"
+#include "os.h"
+
+#if OS_OS2
+# include <time.h>
+# include <errno.h>
+# include <unistd.h>
+# define INCL_DOSFILEMGR
+# define INCL_DOSERRORS
+# define INCL_DOSPROCESS
+# include <os2.h>
+# include <stdio.h>
+# include <stdlib.h>
+# include <io.h>
+# include <share.h>
+
+/*
+** Include code that is common to all os_*.c files
+*/
+#include "os_common.h"
+
+/*
+** Macros used to determine whether or not to use threads.  The
+** SQLITE_UNIX_THREADS macro is defined if we are synchronizing for
+** Posix threads and SQLITE_W32_THREADS is defined if we are
+** synchronizing using Win32 threads.
+*/
+#if defined(THREADSAFE) && THREADSAFE
+/* this mutex implementation only available with EMX */
+# include <sys/builtin.h>
+# include <sys/smutex.h>
+# define SQLITE_OS2_THREADS 1
+#endif
+
+/*
+** Delete the named file
+*/
+int sqlite3OsDelete(const char *zFilename){
+  unlink(zFilename);
+  return SQLITE_OK;
+}
+
+/*
+** Return TRUE if the named file exists.
+*/
+int sqlite3OsFileExists(const char *zFilename){
+  return access(zFilename, 0)==0;
+}
+
+#if 0 /* NOT USED */
+/*
+** Change the name of an existing file.
+*/
+int sqlite3OsFileRename(const char *zOldName, const char *zNewName){
+  if( link(zOldName, zNewName) ){
+    return SQLITE_ERROR;
+  }
+  unlink(zOldName);
+  return SQLITE_OK;
+}
+#endif /* NOT USED */
+
+/*
+** Attempt to open a file for both reading and writing.  If that
+** fails, try opening it read-only.  If the file does not exist,
+** try to create it.
+**
+** On success, a handle for the open file is written to *id
+** and *pReadonly is set to 0 if the file was opened for reading and
+** writing or 1 if the file was opened read-only.  The function returns
+** SQLITE_OK.
+**
+** On failure, the function returns SQLITE_CANTOPEN and leaves
+** *id and *pReadonly unchanged.
+*/
+int sqlite3OsOpenReadWrite(
+  const char *zFilename,
+  OsFile *id,
+  int *pReadonly
+){
+
+  id->h = sopen(zFilename, O_RDWR|O_CREAT|O_BINARY, SH_DENYNO, 0600);
+  if( id->h<0 ){
+    id->h = sopen(zFilename, O_RDONLY|O_BINARY, SH_DENYNO);
+    if( id->h<0 ){
+      return SQLITE_CANTOPEN; 
+    }
+    *pReadonly = 1;
+  }else{
+    *pReadonly = 0;
+  }
+  id->locked = 0;
+  id->delOnClose = 0;
+  TRACE3("OPEN    %-3d %s\n", id->h, zFilename);
+  OpenCounter(+1);
+  return SQLITE_OK;
+}
+
+
+/*
+** Attempt to open a new file for exclusive access by this process.
+** The file will be opened for both reading and writing.  To avoid
+** a potential security problem, we do not allow the file to have
+** previously existed.  Nor do we allow the file to be a symbolic
+** link.
+**
+** If delFlag is true, then make arrangements to automatically delete
+** the file when it is closed.
+**
+** On success, write the file handle into *id and return SQLITE_OK.
+**
+** On failure, return SQLITE_CANTOPEN.
+*/
+int sqlite3OsOpenExclusive(const char *zFilename, OsFile *id, int delFlag){
+
+  if( access(zFilename, 0)==0 ){
+    return SQLITE_CANTOPEN;
+  }
+  id->h = sopen(zFilename, O_RDWR|O_CREAT|O_EXCL|O_BINARY, SH_DENYNO, 0600);
+  if( id->h<0 ){
+    return SQLITE_CANTOPEN;
+  }
+  id->locked = 0;
+  id->delOnClose = delFlag;
+  if (delFlag)
+    id->pathToDel = sqlite3OsFullPathname(zFilename);
+  TRACE3("OPEN-EX %-3d %s\n", id->h, zFilename);
+  OpenCounter(+1);
+  return SQLITE_OK;
+}
+
+/*
+** Attempt to open a new file for read-only access.
+**
+** On success, write the file handle into *id and return SQLITE_OK.
+**
+** On failure, return SQLITE_CANTOPEN.
+*/
+int sqlite3OsOpenReadOnly(const char *zFilename, OsFile *id){
+
+  id->h = sopen(zFilename, O_RDONLY|O_BINARY, SH_DENYNO, 0600);
+  if( id->h<0 ){
+    return SQLITE_CANTOPEN;
+  }
+  id->locked = 0;
+  id->delOnClose = 0;
+  TRACE3("OPEN-RO %-3d %s\n", id->h, zFilename);
+  OpenCounter(+1);
+  return SQLITE_OK;
+}
+
+/*
+** Attempt to open a file descriptor for the directory that contains a
+** file.  This file descriptor can be used to fsync() the directory
+** in order to make sure the creation of a new file is actually written
+** to disk.
+**
+** This routine is only meaningful for Unix.  It is a no-op under
+** windows since windows does not support hard links.
+**
+** On success, a handle for a previously open file is at *id is
+** updated with the new directory file descriptor and SQLITE_OK is
+** returned.
+**
+** On failure, the function returns SQLITE_CANTOPEN and leaves
+** *id unchanged.
+*/
+int sqlite3OsOpenDirectory(
+  const char *zDirname,
+  OsFile *id
+){
+  return SQLITE_OK;
+}
+
+/*
+** If the following global variable points to a string which is the
+** name of a directory, then that directory will be used to store
+** temporary files.
+*/
+char *sqlite3_temp_directory = 0;
+
+/*
+** Create a temporary file name in zBuf.  zBuf must be big enough to
+** hold at least SQLITE_TEMPNAME_SIZE characters.
+*/
+int sqlite3OsTempFileName(char *zBuf){
+  static const char *azDirs[] = {
+     "/temp",                     /* supercede from TEMP env var */
+     "/temp",
+     "/tmp",
+     ".",
+  };
+  static const char zChars[] =
+    "abcdefghijklmnopqrstuvwxyz"
+    "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
+    "0123456789";
+  int i, j;
+  struct stat buf;
+  const char *zDir = ".";
+  azDirs[0] = getenv("TEMP");
+  zDir = ".";
+  for(i=0; i<sizeof(azDirs)/sizeof(azDirs[0]); i++){
+    if( !azDirs[i] ) continue;
+    if( stat(azDirs[i], &buf) ) continue;
+    if( !S_ISDIR(buf.st_mode) ) continue;
+    if( access(azDirs[i], 07) ) continue;
+    zDir = azDirs[i];
+    break;
+  }
+  do{
+    snprintf(zBuf, SQLITE_TEMPNAME_SIZE, "%s/"TEMP_FILE_PREFIX, zDir);
+    j = strlen(zBuf);
+    sqlite3Randomness(15, &zBuf[j]);
+    for(i=0; i<15; i++, j++){
+      zBuf[j] = (char)zChars[ ((unsigned char)zBuf[j])%(sizeof(zChars)-1) ];
+    }
+    zBuf[j] = 0;
+  }while( access(zBuf,0)==0 );
+  return SQLITE_OK; 
+}
+
+#ifndef SQLITE_OMIT_PAGER_PRAGMAS
+/*
+** Check that a given pathname is a directory and is writable 
+**
+*/
+int sqlite3OsIsDirWritable(char *zBuf){
+  struct stat buf;
+  if( zBuf==0 ) return 0;
+  if( zBuf[0]==0 ) return 0;
+  if( stat(zBuf, &buf) ) return 0;
+  if( !S_ISDIR(buf.st_mode) ) return 0;
+  if( access(zBuf, 07) ) return 0;
+  return 1;
+}
+#endif /* SQLITE_OMIT_PAGER_PRAGMAS */
+
+/*
+** Read data from a file into a buffer.  Return SQLITE_OK if all
+** bytes were read successfully and SQLITE_IOERR if anything goes
+** wrong.
+*/
+int sqlite3OsRead(OsFile *id, void *pBuf, int amt){
+  int got;
+  
+  SimulateIOError(SQLITE_IOERR);
+  TIMER_START;
+  got = read(id->h, pBuf, amt);
+  TIMER_END;
+  TRACE5("READ    %-3d %5d %7d %d\n", id->h, got, last_page, TIMER_ELAPSED);
+  SEEK(0);
+  /* if( got<0 ) got = 0; */
+  if( got==amt ){
+    return SQLITE_OK;
+  }else{
+    return SQLITE_IOERR;
+  }
+}
+
+/*
+** Write data from a buffer into a file.  Return SQLITE_OK on success
+** or some other error code on failure.
+*/
+int sqlite3OsWrite(OsFile *id, const void *pBuf, int amt){
+  int wrote = 0;
+  
+  assert( amt>0 );
+  SimulateIOError(SQLITE_IOERR);
+  SimulateDiskfullError;
+  TIMER_START;
+  wrote = write(id->h, pBuf, amt);
+  TIMER_END;
+  if ( wrote<0 ){
+    return SQLITE_IOERR;
+  }
+  TRACE5("WRITE   %-3d %5d %7d %d\n", id->h, got, last_page, TIMER_ELAPSED);
+  SEEK(0);
+  if( (wrote - amt)>0 ){
+    return SQLITE_FULL;
+  }
+  return SQLITE_OK;
+}
+
+/*
+** Move the read/write pointer in a file.
+*/
+int sqlite3OsSeek(OsFile *id, i64 offset){
+  
+  SEEK(offset/1024 + 1);
+    long pos;
+    pos = lseek(id->h, offset, SEEK_SET);
+    if ( pos<0 )
+      return SQLITE_IOERR;
+    return SQLITE_OK;
+}
+
+#ifdef SQLITE_TEST
+/*
+** Count the number of fullsyncs and normal syncs.  This is used to test
+** that syncs and fullsyncs are occuring at the right times.
+*/
+int sqlite3_sync_count = 0;
+int sqlite3_fullsync_count = 0;
+#endif
+
+/*
+** The fsync() system call does not work as advertised on many
+** unix systems.  The following procedure is an attempt to make
+** it work better.
+**
+** The SQLITE_NO_SYNC macro disables all fsync()s.  This is useful
+** for testing when we want to run through the test suite quickly.
+** You are strongly advised *not* to deploy with SQLITE_NO_SYNC
+** enabled, however, since with SQLITE_NO_SYNC enabled, an OS crash
+** or power failure will likely corrupt the database file.
+*/
+static int full_fsync(int fd, int fullSync){
+  int rc;
+
+  /* Record the number of times that we do a normal fsync() and 
+  ** FULLSYNC.  This is used during testing to verify that this procedure
+  ** gets called with the correct arguments.
+  */
+#ifdef SQLITE_TEST
+  if( fullSync ) sqlite3_fullsync_count++;
+  sqlite3_sync_count++;
+#endif
+
+  /* If we compiled with the SQLITE_NO_SYNC flag, then syncing is a
+  ** no-op
+  */
+#ifdef SQLITE_NO_SYNC
+  rc = SQLITE_OK;
+#else
+
+#ifdef F_FULLFSYNC
+  if( fullSync ){
+    rc = fcntl(fd, F_FULLFSYNC, 0);
+  }else{
+    rc = 1;
+  }
+  /* If the FULLSYNC failed, try to do a normal fsync() */
+  if( rc ) rc = fsync(fd);
+
+#else
+  rc = fsync(fd);
+#endif /* defined(F_FULLFSYNC) */
+#endif /* defined(SQLITE_NO_SYNC) */
+
+  return rc;
+}
+
+/*
+** Make sure all writes to a particular file are committed to disk.
+**
+** Under Unix, also make sure that the directory entry for the file
+** has been created by fsync-ing the directory that contains the file.
+** If we do not do this and we encounter a power failure, the directory
+** entry for the journal might not exist after we reboot.  The next
+** SQLite to access the file will not know that the journal exists (because
+** the directory entry for the journal was never created) and the transaction
+** will not roll back - possibly leading to database corruption.
+*/
+int sqlite3OsSync(OsFile *id){
+  
+  SimulateIOError(SQLITE_IOERR);
+  TRACE2("SYNC    %-3d\n", id->h);
+  if( full_fsync(id->h, id->fullSync)){
+    return SQLITE_IOERR;
+  }else{
+    return SQLITE_OK;
+  }
+}
+
+/*
+** Sync the directory zDirname. This is a no-op on operating systems other
+** than UNIX.
+*/
+int sqlite3OsSyncDirectory(const char *zDirname){
+  SimulateIOError(SQLITE_IOERR);
+  return SQLITE_OK;
+}
+
+/*
+** Truncate an open file to a specified size
+*/
+int sqlite3OsTruncate(OsFile *id, i64 nByte){
+  
+  SimulateIOError(SQLITE_IOERR);
+  return ftruncate(id->h, nByte)==0 ? SQLITE_OK : SQLITE_IOERR;
+}
+
+/*
+** Determine the current size of a file in bytes
+*/
+int sqlite3OsFileSize(OsFile *id, i64 *pSize){
+  struct stat buf;
+  
+  SimulateIOError(SQLITE_IOERR);
+  if( fstat(id->h, &buf)!=0 ){
+    return SQLITE_IOERR;
+  }
+  *pSize = buf.st_size;
+  return SQLITE_OK;
+}
+
+#define N_LOCKBYTE       0x7fffffffL
+#define FIRST_LOCKBYTE   0L
+
+/*
+** Change the status of the lock on the file "id" to be a readlock.
+** If the file was write locked, then this reduces the lock to a read.
+** If the file was read locked, then this acquires a new read lock.
+**
+** Return SQLITE_OK on success and SQLITE_BUSY on failure.  If this
+** library was compiled with large file support (LFS) but LFS is not
+** available on the host, then an SQLITE_NOLFS is returned.
+*/
+int sqlite3OsCheckReservedLock(OsFile *id){
+  int rc;
+  if( id->locked>0 ){
+    rc = SQLITE_OK;
+  }else{
+    APIRET s;
+    FILELOCK ulock = {0L, 0L};
+    FILELOCK lock = {FIRST_LOCKBYTE, N_LOCKBYTE};
+    long readlock = 1L;
+    if( id->locked<0 ){
+      ulock.lOffset = lock.lOffset;
+      ulock.lRange = lock.lRange;
+      readlock += 2L;                    /* atomic unlock/lock */
+    }
+    s = DosSetFileLocks(id->h, &ulock, &lock, 0L, readlock);
+    if( s!=NO_ERROR ){
+      rc = 1;
+    }else{
+      rc = 0;
+      id->locked = 1;
+    }
+  }
+  return rc;
+}
+
+#ifdef SQLITE_DEBUG
+/*
+** Helper function for printing out trace information from debugging
+** binaries. This returns the string represetation of the supplied
+** integer lock-type.
+*/
+static const char * locktypeName(int locktype){
+  switch( locktype ){
+  case NO_LOCK: return "NONE";
+  case SHARED_LOCK: return "SHARED";
+  case RESERVED_LOCK: return "RESERVED";
+  case PENDING_LOCK: return "PENDING";
+  case EXCLUSIVE_LOCK: return "EXCLUSIVE";
+  }
+  return "ERROR";
+}
+#endif
+
+/*
+** Change the lock status to be an exclusive or write lock.  Return
+** SQLITE_OK on success and SQLITE_BUSY on a failure.  If this
+** library was compiled with large file support (LFS) but LFS is not
+** available on the host, then an SQLITE_NOLFS is returned.
+*/
+int sqlite3OsLock(OsFile *id, int locktype){
+  int rc;
+  if( id->locked<0 ){
+    rc = SQLITE_OK;
+  }else{
+    APIRET s;
+    FILELOCK ulock = {0L, 0L};
+    FILELOCK lock = {FIRST_LOCKBYTE, N_LOCKBYTE};
+    long writelock = 0L;
+    if( id->locked>0 ){
+      ulock.lOffset = lock.lOffset;
+      ulock.lRange = lock.lRange;
+      writelock += 2L;                   /* atomic unlock/lock */
+    }
+    s = DosSetFileLocks(id->h, &ulock, &lock, 0L, writelock);
+    if( s!=NO_ERROR ){
+      rc = SQLITE_BUSY;
+    }else{
+      rc = SQLITE_OK;
+      id->locked = -1;
+    }
+  }
+  return rc;
+}
+
+/*
+** Unlock the given file descriptor.  If the file descriptor was
+** not previously locked, then this routine is a no-op.  If this
+** library was compiled with large file support (LFS) but LFS is not
+** available on the host, then an SQLITE_NOLFS is returned.
+*/
+int sqlite3OsUnlock(OsFile *id, int locktype){
+  int rc;
+  if( id->locked==0 ){
+    rc = SQLITE_OK;
+  }else{
+    APIRET s;
+    FILELOCK ulock = {FIRST_LOCKBYTE, N_LOCKBYTE};
+    FILELOCK lock = {0L, 0L};
+    s = DosSetFileLocks(id->h, &ulock, &lock, 0L, 0L);
+    if( s!=NO_ERROR ){
+      rc = SQLITE_BUSY;
+    }else{
+      rc = SQLITE_OK;
+      id->locked = 0;
+    }
+  }
+  return rc;
+}
+
+/*
+** Close a file.
+*/
+int sqlite3OsClose(OsFile *id){
+  close(id->h);
+  if( id->delOnClose ){
+    unlink(id->pathToDel);
+    sqliteFree(id->pathToDel);
+  }
+  TRACE2("CLOSE   %-3d\n", id->h);
+  id->isOpen = 0;
+  OpenCounter(-1);
+  return SQLITE_OK;
+}
+
+/*
+** Get information to seed the random number generator.  The seed
+** is written into the buffer zBuf[256].  The calling function must
+** supply a sufficiently large buffer.
+*/
+int sqlite3OsRandomSeed(char *zBuf){
+  /* We have to initialize zBuf to prevent valgrind from reporting
+  ** errors.  The reports issued by valgrind are incorrect - we would
+  ** prefer that the randomness be increased by making use of the
+  ** uninitialized space in zBuf - but valgrind errors tend to worry
+  ** some users.  Rather than argue, it seems easier just to initialize
+  ** the whole array and silence valgrind, even if that means less randomness
+  ** in the random seed.
+  **
+  ** When testing, initializing zBuf[] to zero is all we do.  That means
+  ** that we always use the same random number sequence.* This makes the
+  ** tests repeatable.
+  */
+  memset(zBuf, 0, 256);
+
+#if !defined(SQLITE_TEST)
+  {
+    int pid;
+    time((time_t*)zBuf);
+    pid = getpid();
+    memcpy(&zBuf[sizeof(time_t)], &pid, sizeof(pid));
+  }
+#endif
+  return SQLITE_OK;
+}
+
+/*
+** Sleep for a little while.  Return the amount of time slept.
+*/
+int sqlite3OsSleep(int ms){
+  APIRET rc;
+  rc = DosSleep(ms);
+  return ms;
+}
+
+/*
+** Static variables used for thread synchronization
+*/
+static int inMutex = 0;
+#ifdef SQLITE_OS2_THREADS
+  static _smutex mutex = 0;
+#endif
+
+/*
+** The following pair of routine implement mutual exclusion for
+** multi-threaded processes.  Only a single thread is allowed to
+** executed code that is surrounded by EnterMutex() and LeaveMutex().
+**
+** SQLite uses only a single Mutex.  There is not much critical
+** code and what little there is executes quickly and without blocking.
+*/
+void sqlite3OsEnterMutex(){
+#ifdef SQLITE_OS2_THREADS
+  _smutex_request(&mutex);
+#endif
+  assert( !inMutex );
+  inMutex = 1;
+}
+void sqlite3OsLeaveMutex(){
+  assert( inMutex );
+  inMutex = 0;
+#ifdef SQLITE_OS2_THREADS
+  _smutex_release(&mutex);
+#endif
+}
+
+/*
+** Turn a relative pathname into a full pathname.  Return a pointer
+** to the full pathname stored in space obtained from sqliteMalloc().
+** The calling function is responsible for freeing this space once it
+** is no longer needed.
+*/
+char *sqlite3OsFullPathname(const char *zRelative){
+  char *zFull = 0;
+  char zPath[260];    /* max OS/2 path length, incl drive */
+  if( !_abspath(zPath, zRelative, sizeof(zPath)) ){
+    sqlite3SetString(&zFull, zPath, 0);
+  }else{
+    char zBuf[260];
+    snprintf(zPath, sizeof(zPath), "%s/%s",
+             getcwd(zBuf, sizeof(zBuf)), zRelative);
+    sqlite3SetString(&zFull, zPath, 0);
+  }
+  return zFull;
+}
+
+/*
+** The following variable, if set to a non-zero value, becomes the result
+** returned from sqlite3OsCurrentTime().  This is used for testing.
+*/
+#ifdef SQLITE_TEST
+int sqlite3_current_time = 0;
+#endif
+
+/*
+** Find the current time (in Universal Coordinated Time).  Write the
+** current time and date as a Julian Day number into *prNow and
+** return 0.  Return 1 if the time and date cannot be found.
+*/
+int sqlite3OsCurrentTime(double *prNow){
+  time_t t;
+  time(&t);
+  *prNow = t/86400.0 + 2440587.5;
+#ifdef SQLITE_TEST
+  if( sqlite3_current_time ){
+    *prNow = sqlite_current_time/86400.0 + 2440587.5;
+  }
+#endif
+  return 0;
+}
+
+#if 0 /* NOT USED */
+/*
+** Find the time that the file was last modified.  Write the
+** modification time and date as a Julian Day number into *prNow and
+** return SQLITE_OK.  Return SQLITE_ERROR if the modification
+** time cannot be found.
+*/
+int sqlite3OsFileModTime(OsFile *id, double *prNow){
+  int rc;
+  struct stat statbuf;
+  if( fstat(id->h, &statbuf)==0 ){
+    *prNow = statbuf.st_mtime/86400.0 + 2440587.5;
+    rc = SQLITE_OK;
+  }else{
+    rc = SQLITE_ERROR;
+  }
+  return rc;
+}
+#endif /* NOT USED */
+
+#endif /* OS_OS2 */

db/sqlite3/src/os_os2.h

@@ -0,0 +1,57 @@
+/*
+** 2004 May 22
+**
+** The author disclaims copyright to this source code.  In place of
+** a legal notice, here is a blessing:
+**
+**    May you do good and not evil.
+**    May you find forgiveness for yourself and forgive others.
+**    May you share freely, never taking more than you give.
+**
+******************************************************************************
+**
+** This header file defined OS-specific features for OS/2.
+*/
+#ifndef _SQLITE_OS_OS2_H_
+#define _SQLITE_OS_OS2_H_
+
+/*
+** standard include files.
+*/
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+
+
+/*
+** The OsFile structure is a operating-system independing representation
+** of an open file handle.  It is defined differently for each architecture.
+**
+** This is the definition for Unix.
+**
+** OsFile.locktype takes one of the values SHARED_LOCK, RESERVED_LOCK,
+** PENDING_LOCK or EXCLUSIVE_LOCK.
+*/
+typedef struct OsFile OsFile;
+struct OsFile {
+     unsigned long h;        /* The file descriptor (LHANDLE) */
+     int locked;              /* True if this user holds the lock */
+     int delOnClose;          /* True if file is to be deleted on close */
+     char *pathToDel;         /* Name of file to delete on close */
+     unsigned char locktype;   /* The type of lock held on this fd */
+     unsigned char isOpen;   /* True if needs to be closed */
+     unsigned char fullSync; 
+};
+
+/*
+** Maximum number of characters in a temporary file name
+*/
+#define SQLITE_TEMPNAME_SIZE 200
+
+/*
+** Minimum interval supported by sqlite3OsSleep().
+*/
+#define SQLITE_MIN_SLEEP_MS 1
+
+#endif /* _SQLITE_OS_OS2_H_ */