[sql] Remove SQLite 3.10.2 reference directory.

third_party/sqlite/sqlite-src-3100200/tool/showlocks.c

-/*
-** This file implements a simple command-line utility that shows all of the
-** Posix Advisory Locks on a file.
-**
-** Usage:
-**
-**     showlocks FILENAME
-**
-** To compile:  gcc -o showlocks showlocks.c
-*/
-#include <stdio.h>
-#include <unistd.h>
-#include <fcntl.h>
-#include <stdlib.h>
-#include <string.h>
-
-/* This utility only looks for locks in the first 2 billion bytes */
-#define MX_LCK 2147483647
-
-/*
-** Print all locks on the inode of "fd" that occur in between
-** lwr and upr, inclusive.
-*/
-static int showLocksInRange(int fd, off_t lwr, off_t upr){
-  int cnt = 0;
-  struct flock x;
-
-  x.l_type = F_WRLCK;
-  x.l_whence = SEEK_SET;
-  x.l_start = lwr;
-  x.l_len = upr-lwr;
-  fcntl(fd, F_GETLK, &x);
-  if( x.l_type==F_UNLCK ) return 0;
-  printf("start: %-12d len: %-5d pid: %-5d type: %s\n",
-       (int)x.l_start, (int)x.l_len,
-       x.l_pid, x.l_type==F_WRLCK ? "WRLCK" : "RDLCK");
-  cnt++;
-  if( x.l_start>lwr ){
-    cnt += showLocksInRange(fd, lwr, x.l_start-1);
-  }
-  if( x.l_start+x.l_len<upr ){
-    cnt += showLocksInRange(fd, x.l_start+x.l_len+1, upr);
-  }
-  return cnt;
-}
-
-int main(int argc, char **argv){
-  int fd;
-  int cnt;
-
-  if( argc!=2 ){
-    fprintf(stderr, "Usage: %s FILENAME\n", argv[0]);
-    return 1;
-  }
-  fd = open(argv[1], O_RDWR, 0);
-  if( fd<0 ){
-    fprintf(stderr, "%s: cannot open %s\n", argv[0], argv[1]);
-    return 1;
-  }
-  cnt = showLocksInRange(fd, 0, MX_LCK);
-  if( cnt==0 ) printf("no locks\n");  
-  close(fd);
-  return 0;
-}