include/os.h

   1 /*************************************************************************
   2  *                                                                      *
   3  *    Copyright (C) Lakshya Solutions Ltd. All rights reserved.            *
   4  *                                                                         *
   5  ***************************************************************************/
   6
   7 #ifndef OS_H
   8 #define OS_H
   9 #include<build.h>
  10
  11 //Added for gettimeofday impl for windows
  12 #if defined(_MSC_VER) || defined(_MSC_EXTENSIONS)
  13   #define DELTA_EPOCH_IN_MICROSECS  11644473600000000Ui64
  14 #else
  15   #define DELTA_EPOCH_IN_MICROSECS  11644473600000000ULL
  16 #endif
  17
  18
  19 #define SQL_STMT_LEN 8192
  20 #define MAX_FILE_LEN 1024
  21 #define IDENTIFIER_LENGTH 64
  22 #define ERROR_STRING_LENGTH 128
  23 #define DEFAULT_VALUE_BUF_LENGTH 32
  24 #define STATE_LENGTH 8
  25 #define SYSTEMDB "SYSTEMDB"
  26 #define DBAUSER "root"
  27 #define DBAPASS "manager"
  28 #define I_USER "i@1r4D_f$_a"
  29 #define I_PASS "a_$f_D4r1@i"
  30 #define DEFAULT_CONFIG_FILE "/etc/csql/csql.conf"
  31 #define LOCK_BUCKET_SIZE 2048
  32 #define STMT_BUCKET_SIZE 1023
  33 #define MAX_CHUNKS 20
  34 #define PAGE_SIZE Conf::config.getPageSize()
  35 #define MAX_MUTEX_PER_THREAD 5
  36 #define MAX_THREADS_PER_PROCESS 30
  37 #define MAX_FILE_PATH_LEN 1024
  38 #define CHUNK_NAME_LEN 64
  39 #define LOG_ROLLOVER_SIZE 20*1024*1024
  40 #define SIGCSQL1 SIGUSR1
  41 #define MIN_VARCHAR_ALLOC_SIZE 30
  42
  43 #define BIT(x) (1 << (x))
  44 #define SETBITS(x,y) ((x) |= (y))
  45 #define CLEARBITS(x,y) ((x) &= (~(y)))
  46 #define SETBIT(x,y) SETBITS((x), (BIT((y))))
  47 #define CLEARBIT(x,y) CLEARBITS((x), (BIT((y))))
  48 #define BITSET(x,y) ((x) & (BIT(y)))
  49 #define DllExport
  50 typedef void (*sighandler_t)(int);
  51 #define LHANDLE void*
  52
  53 #include <stdio.h>
  54 #include <fcntl.h>
  55 #include <sys/types.h>
  56 #include <sys/stat.h>
  57 #include <math.h>
  58 #include <string.h>
  59 #include <stdlib.h>
  60 #include <limits.h>
  61 #include <signal.h>
  62
  63
  64 #if defined(SOLARIS) || defined(LINUX) || defined(FreeBSD)
  65
  66 #include <sys/mman.h>
  67 #include <sys/msg.h>
  68 #include <sys/shm.h>
  69 #include <unistd.h>
  70 #include <pthread.h>
  71 #include <ctype.h>
  72 #include <sys/socket.h>
  73 #include <fnmatch.h>
  74 #include <sys/time.h>
  75 #include <stdarg.h>
  76 #include <net/if.h>
  77 #include <arpa/inet.h>
  78 #include <netinet/in.h>
  79 #include <netinet/tcp.h>
  80 #include <sys/file.h>
  81 #include <sys/wait.h>
  82 #include <netdb.h>
  83 #if defined(SOLARIS)
  84     #include <sys/varargs.h>
  85     #include <crypt.h>
  86     #include <errno.h>
  87     #include <sys/atomic.h>
  88     #include <timecsql.h>
  89     #include <ucontext.h>
  90     //extern int errno;
  91 #endif
  92 #if defined(LINUX)
  93     #include <execinfo.h>
  94     #include <ifaddrs.h>
  95     #include <sys/errno.h>
  96     #include <crypt.h>
  97 #endif
  98 #if defined(FreeBSD)
  99     #include <sys/errno.h>
 100 #endif
 101 #include <dlfcn.h>
 102
 103
 104 enum FileOpenMode
 105 {
 106     fileOpenReadOnly = O_RDONLY,
 107     fileOpenWriteOnly = O_WRONLY,
 108     fileOpenReadWrite = O_RDWR,
 109     fileOpenAppend = O_CREAT| O_APPEND |O_RDWR,
 110     fileOpenCreat = O_CREAT |O_RDWR,
 111     // If set and fileOpenExcl is set, the
 112     // open will fail if the file already exists.
 113     fileOpenExcl = O_EXCL,
 114     fileOpenTrunc = O_TRUNC
 115 };
 116
 117 enum MapProtMode
 118 {
 119     mapProtRead = PROT_READ,
 120     mapProtWrite = PROT_WRITE,
 121     mapProcExec = PROT_EXEC,
 122     mapProcNone = PROT_NONE
 123 };
 124
 125 enum MapMode
 126 {
 127     mapShared = MAP_SHARED,
 128     mapPrivate = MAP_PRIVATE,
 129     mapFixed = MAP_FIXED,
 130     // Interpret address exactly.
 131     mapNoReserve = MAP_NORESERVE,
 132     // Don't reserver swap space.
 133
 134     //mapAlign = MAP_ALIGN,
 135     //for msync system call
 136     mapSync = MS_SYNC ,
 137     mapASync = MS_ASYNC
 138
 139 };
 140 typedef int file_desc;
 141 typedef key_t shared_memory_key;
 142 typedef int   shared_memory_id;
 143 #if defined(__sparcv9)
 144     typedef long InUse;
 145 #else
 146     typedef int InUse;
 147 #endif
 148
 149 #elif defined(WINNT)
 150 #include <io.h>
 151 #include <time.h>
 152 #include <winsock2.h>
 153 #include <errno.h>
 154 #include <tchar.h>
 155
 156 #define snprintf sprintf_s
 157 #define strncasecmp _strnicmp
 158 #define strcasecmp strcmpi
 159 #define vsnprintf vsnprintf_s
 160 typedef HANDLE file_desc;
 161 typedef  long off_t;
 162 typedef void* caddr_t;
 163 typedef int InUse;
 164 typedef int pid_t;
 165 typedef int pthread_t;
 166 typedef int mode_t;
 167 typedef int key_t;
 168 typedef int shared_memory_key;
 169 typedef int shared_memory_id;
 170 typedef size_t socklen_t;
 171 #define MAP_FAILED -1
 172 #define MSG_NOSIGNAL 0
 173 #define SHM_RND 0
 174 #define IPC_RMID 0
 175 #define SQL_API
 176 #define ALLREADY_HAVE_WINDOWS_TYPE
 177 #define SIGCSQL1 0 //drop table signal wont work for windoes
 178 #define SIGCHLD SIGTERM
 179 #define MS_SYNC 0
 180 #define O_SYNC 0
 181 #define O_DIRECT 0
 182 #define LHANDLE HMODULE
 183 #ifndef APP_BUILD
 184 #define DllExport   __declspec( dllexport )
 185 #endif
 186 typedef signed short int        SWORD;
 187 #define SQL_NOUNICODEMAP //Note: to suppress mapping to unicode APIs
 188 enum FileOpenMode
 189 {
 190     fileOpenReadOnly = _O_RDONLY,
 191     fileOpenWriteOnly = _O_WRONLY,
 192     fileOpenReadWrite = _O_RDWR,
 193     fileOpenAppend = _O_CREAT| _O_APPEND |_O_RDWR,
 194     fileOpenCreat = _O_CREAT |_O_RDWR,
 195     // If set and fileOpenExcl is set, the
 196     // open will fail if the file already exists.
 197     fileOpenExcl = _O_EXCL,
 198     fileOpenTrunc = _O_TRUNC
 199 };
 200 enum MapProtMode
 201 {
 202     mapProtRead = PAGE_READONLY,
 203     mapProtWrite = PAGE_READWRITE,
 204     mapProcExec = PAGE_READWRITE, //execute is not supported in win2k
 205     mapProcNone = PAGE_READWRITE // exec and none mode is not used in code
 206 };
 207
 208 //Mapping all modes to dummy for now
 209 enum MapMode
 210 {
 211     mapShared = PAGE_READWRITE ,
 212     mapPrivate = PAGE_READWRITE ,
 213     mapFixed = PAGE_READWRITE ,
 214     mapNoReserve = PAGE_READWRITE ,
 215     mapSync = PAGE_READWRITE ,
 216     mapASync = PAGE_READWRITE
 217 };
 218
 219 extern DllExport int optind, opterr;
 220 extern DllExport TCHAR *optarg;
 221
 222 #endif
 223
 224 class DllExport os
 225 {
 226     public:
 227     static void* mmap(void* addr, size_t len, int prot, int flags, file_desc fildes, off_t off);
 228     static int munmap(caddr_t addr, size_t len);
 229     static int open(const char *name, FileOpenMode flags, size_t size);
 230     static int close(int fd);
 231         static file_desc openFile(const char *name, FileOpenMode flags, size_t size);
 232     static int closeFile(file_desc fd);
 233     static int lockFile(int fd);
 234     static int unlockFile(int fd);
 235         static int truncate(const char* fname);
 236     static off_t lseek(int fildes, off_t offset, int whence);
 237     static int openFileForAppend(const char* fname, int flags);
 238     static int getFileSize(const char* fname);
 239     static size_t write(int fildes, char *buf, size_t size);
 240     static int msync(caddr_t addr, size_t len, int flags);
 241     static int fsync(int fildes);
 242     inline static size_t alignLong(size_t size)
 243         { return ((size - 1) | (sizeof(long) - 1)) + 1;}
 244     inline static size_t align(size_t size)
 245         { return ((size - 1) | (sizeof(InUse) - 1)) + 1;}
 246     static char*  encrypt(const char * key, const char *salt);
 247     static void* memset(void *src, int c, size_t size);
 248     static void* memcpy(void *src, const void *dest, size_t size);
 249     static int   memcmp(const void *s1, const void *s2, size_t size);
 250     static int select(int nfds, fd_set *readfds, fd_set *writefds,
 251                       fd_set *exceptfds, struct timeval * timeout);
 252
 253     static int usleep(int microsecs);
 254     static int sleep(int secs);
 255     static shared_memory_id shm_create(shared_memory_key key, size_t size, int flag);
 256     static shared_memory_id shm_open(shared_memory_key key, size_t size, int flag);
 257     static void*  shm_attach(shared_memory_id id, const void *ptr, int flag);
 258     static int shm_detach (void*);
 259     static int shmctl(int shmid, int cmd);
 260         static int shm_remove(int shmid);
 261     inline static double floor(double val)
 262         { return ::floor(val); }
 263     static sighandler_t signal(int signum, sighandler_t handler);
 264
 265     static int gettimeofday(struct timeval *tp);
 266     static struct tm* localtime(long *secs);
 267     static pid_t getpid();
 268     static pthread_t getthrid();
 269     static char* getenv(const char *envVarName);
 270     static int setenv(const char *envVarName, const char *value);
 271
 272     static int kill(pid_t pid, int sig);
 273     static bool atobool(char *value);
 274     static pid_t createProcess(const char* cmdName, const char *arg0);
 275     static pid_t fork();
 276     static size_t send(int fd, const void *buf, size_t len, int flags);
 277     static size_t recv(int fd, void *buf, size_t len, int flags);
 278     static int gethostname(char *hostname, size_t len);
 279     static int strmatch(char *pattern, char *str);
 280     static int msgget(key_t key, int oflag);
 281     static int msgsnd(int msqid, const void *ptr, size_t len, int flag);
 282     static int msgrcv(int msqid, void *ptr, size_t len, long type, int flag);
 283     static int msgctl(int msqid, int cmd, struct msqid_ds *buff);
 284     static int isValidIP(char ipstr[] );
 285     static bool fileExists(char *fileName);
 286     static char* strcasestr(char *s1, const char *s2);
 287     static int getNoOfProcessors();
 288     static mode_t umask(mode_t mask);
 289     static int fdatasync(file_desc fd);
 290     static int atexit(void (*exitHndlr)(void));
 291     static void* dlsym(LHANDLE hdl, char* funcName);
 292         static char getopt(int argc, char *argv[], char *opt);
 293 };
 294
 295 #endif