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 #define LENGTH socklen_t
  53
  54 #include <stdio.h>
  55 #include <fcntl.h>
  56 #include <sys/types.h>
  57 #include <sys/stat.h>
  58 #include <math.h>
  59 #include <string.h>
  60 #include <stdlib.h>
  61 #include <limits.h>
  62 #include <signal.h>
  63
  64
  65 #if defined(SOLARIS) || defined(LINUX) || defined(FreeBSD)
  66
  67 #include <sys/mman.h>
  68 #include <sys/msg.h>
  69 #include <sys/shm.h>
  70 #include <unistd.h>
  71 #include <pthread.h>
  72 #include <ctype.h>
  73 #include <sys/socket.h>
  74 #include <fnmatch.h>
  75 #include <sys/time.h>
  76 #include <stdarg.h>
  77 #include <net/if.h>
  78 #include <arpa/inet.h>
  79 #include <netinet/in.h>
  80 #include <netinet/tcp.h>
  81 #include <sys/file.h>
  82 #include <sys/wait.h>
  83 #include <netdb.h>
  84 #if defined(SOLARIS)
  85     #include <sys/varargs.h>
  86     #include <crypt.h>
  87     #include <errno.h>
  88     #include <sys/atomic.h>
  89     #include <timecsql.h>
  90     #include <ucontext.h>
  91     //extern int errno;
  92 #endif
  93 #if defined(LINUX)
  94     #include <execinfo.h>
  95     #include <ifaddrs.h>
  96     #include <sys/errno.h>
  97     #include <crypt.h>
  98 #endif
  99 #if defined(FreeBSD)
 100     #include <sys/errno.h>
 101 #endif
 102 #include <dlfcn.h>
 103
 104
 105 enum FileOpenMode
 106 {
 107     fileOpenReadOnly = O_RDONLY,
 108     fileOpenWriteOnly = O_WRONLY,
 109     fileOpenReadWrite = O_RDWR,
 110     fileOpenAppend = O_CREAT| O_APPEND |O_RDWR,
 111     fileOpenCreat = O_CREAT |O_RDWR,
 112     // If set and fileOpenExcl is set, the
 113     // open will fail if the file already exists.
 114     fileOpenExcl = O_EXCL,
 115     fileOpenTrunc = O_TRUNC
 116 };
 117
 118 enum MapProtMode
 119 {
 120     mapProtRead = PROT_READ,
 121     mapProtWrite = PROT_WRITE,
 122     mapProcExec = PROT_EXEC,
 123     mapProcNone = PROT_NONE
 124 };
 125
 126 enum MapMode
 127 {
 128     mapShared = MAP_SHARED,
 129     mapPrivate = MAP_PRIVATE,
 130     mapFixed = MAP_FIXED,
 131     // Interpret address exactly.
 132     mapNoReserve = MAP_NORESERVE,
 133     // Don't reserver swap space.
 134
 135     //mapAlign = MAP_ALIGN,
 136     //for msync system call
 137     mapSync = MS_SYNC ,
 138     mapASync = MS_ASYNC
 139
 140 };
 141 typedef int file_desc;
 142 typedef key_t shared_memory_key;
 143 typedef int   shared_memory_id;
 144 #if defined(__sparcv9)
 145     typedef long InUse;
 146 #else
 147     typedef int InUse;
 148 #endif
 149
 150 #elif defined(WINNT)
 151 #include <io.h>
 152 #include <time.h>
 153 #include <winsock2.h>
 154 #include <errno.h>
 155 #include <tchar.h>
 156
 157 #define snprintf sprintf_s
 158 #define strncasecmp _strnicmp
 159 #define strcasecmp strcmpi
 160 #define vsnprintf vsnprintf_s
 161 typedef HANDLE file_desc;
 162 typedef  long off_t;
 163 typedef void* caddr_t;
 164 typedef int InUse;
 165 typedef int pid_t;
 166 typedef int pthread_t;
 167 typedef int mode_t;
 168 typedef int key_t;
 169 typedef int shared_memory_key;
 170 typedef int shared_memory_id;
 171 typedef size_t socklen_t;
 172 #define MAP_FAILED -1
 173 #define MSG_NOSIGNAL 0
 174 #define SHM_RND 0
 175 #define IPC_RMID 0
 176 #define SQL_API
 177 #define ALLREADY_HAVE_WINDOWS_TYPE
 178 #define SIGCSQL1 0 //drop table signal wont work for windoes
 179 #define SIGCHLD SIGTERM
 180 #define MS_SYNC 0
 181 #define O_SYNC 0
 182 #define O_DIRECT 0
 183 #define LENGTH int
 184 #define LHANDLE HMODULE
 185 #ifndef APP_BUILD
 186 #define DllExport   __declspec( dllexport )
 187 #endif
 188 typedef signed short int        SWORD;
 189 #define SQL_NOUNICODEMAP //Note: to suppress mapping to unicode APIs
 190 enum FileOpenMode
 191 {
 192     fileOpenReadOnly = _O_RDONLY,
 193     fileOpenWriteOnly = _O_WRONLY,
 194     fileOpenReadWrite = _O_RDWR,
 195     fileOpenAppend = _O_CREAT| _O_APPEND |_O_RDWR,
 196     fileOpenCreat = _O_CREAT |_O_RDWR,
 197     // If set and fileOpenExcl is set, the
 198     // open will fail if the file already exists.
 199     fileOpenExcl = _O_EXCL,
 200     fileOpenTrunc = _O_TRUNC
 201 };
 202 enum MapProtMode
 203 {
 204     mapProtRead = PAGE_READONLY,
 205     mapProtWrite = PAGE_READWRITE,
 206     mapProcExec = PAGE_READWRITE, //execute is not supported in win2k
 207     mapProcNone = PAGE_READWRITE // exec and none mode is not used in code
 208 };
 209
 210 //Mapping all modes to dummy for now
 211 enum MapMode
 212 {
 213     mapShared = PAGE_READWRITE ,
 214     mapPrivate = PAGE_READWRITE ,
 215     mapFixed = PAGE_READWRITE ,
 216     mapNoReserve = PAGE_READWRITE ,
 217     mapSync = PAGE_READWRITE ,
 218     mapASync = PAGE_READWRITE
 219 };
 220
 221 extern DllExport int optind, opterr;
 222 extern DllExport TCHAR *optarg;
 223
 224 #endif
 225
 226 class DllExport os
 227 {
 228     public:
 229     static void* mmap(void* addr, size_t len, int prot, int flags, file_desc fildes, off_t off);
 230     static int munmap(caddr_t addr, size_t len);
 231     static int open(const char *name, FileOpenMode flags, size_t size);
 232     static int close(int fd);
 233         static file_desc openFile(const char *name, FileOpenMode flags, size_t size);
 234     static int closeFile(file_desc fd);
 235     static int closeSocket(int fd);
 236     static int lockFile(int fd);
 237     static int unlockFile(int fd);
 238         static int truncate(const char* fname);
 239     static off_t lseek(int fildes, off_t offset, int whence);
 240     static int openFileForAppend(const char* fname, int flags);
 241     static int getFileSize(const char* fname);
 242     static size_t write(int fildes, char *buf, size_t size);
 243     static int msync(caddr_t addr, size_t len, int flags);
 244     static int fsync(int fildes);
 245     inline static size_t alignLong(size_t size)
 246         { return ((size - 1) | (sizeof(long) - 1)) + 1;}
 247     inline static size_t align(size_t size)
 248         { return ((size - 1) | (sizeof(InUse) - 1)) + 1;}
 249     static char*  encrypt(const char * key, const char *salt);
 250     static void* memset(void *src, int c, size_t size);
 251     static void* memcpy(void *src, const void *dest, size_t size);
 252     static int   memcmp(const void *s1, const void *s2, size_t size);
 253     static int select(int nfds, fd_set *readfds, fd_set *writefds,
 254                       fd_set *exceptfds, struct timeval * timeout);
 255
 256     static int usleep(int microsecs);
 257     static int sleep(int secs);
 258     static shared_memory_id shm_create(shared_memory_key key, size_t size, int flag);
 259     static shared_memory_id shm_open(shared_memory_key key, size_t size, int flag);
 260     static void*  shm_attach(shared_memory_id id, const void *ptr, int flag);
 261     static int shm_detach (void*);
 262     static int shmctl(int shmid, int cmd);
 263         static int shm_remove(int shmid);
 264     inline static double floor(double val)
 265         { return ::floor(val); }
 266     static sighandler_t signal(int signum, sighandler_t handler);
 267
 268     static int gettimeofday(struct timeval *tp);
 269     static struct tm* localtime(long *secs);
 270     static pid_t getpid();
 271     static pthread_t getthrid();
 272     static char* getenv(const char *envVarName);
 273     static int setenv(const char *envVarName, const char *value);
 274
 275     static int kill(pid_t pid, int sig);
 276     static bool atobool(char *value);
 277     static pid_t createProcess(const char* cmdName, const char *arg0);
 278     static pid_t fork();
 279     static size_t send(int fd, const void *buf, size_t len, int flags);
 280     static size_t recv(int fd, void *buf, size_t len, int flags);
 281     static int gethostname(char *hostname, size_t len);
 282     static int strmatch(char *pattern, char *str);
 283     static int msgget(key_t key, int oflag);
 284     static int msgsnd(int msqid, const void *ptr, size_t len, int flag);
 285     static int msgrcv(int msqid, void *ptr, size_t len, long type, int flag);
 286     static int msgctl(int msqid, int cmd, struct msqid_ds *buff);
 287     static int isValidIP(char ipstr[] );
 288     static bool fileExists(char *fileName);
 289     static char* strcasestr(char *s1, const char *s2);
 290     static int getNoOfProcessors();
 291     static mode_t umask(mode_t mask);
 292     static int fdatasync(file_desc fd);
 293     static int atexit(void (*exitHndlr)(void));
 294     static void* dlsym(LHANDLE hdl, char* funcName);
 295     static char getopt(int argc, char *argv[], char *opt);
 296 };
 297
 298 #endif