1 /***************************************************************************
3 * Copyright (C) Lakshya Solutions Ltd. All rights reserved. *
5 ***************************************************************************/
11 #if defined(SOLARIS) || defined(LINUX)
21 #include <sys/types.h>
29 #include <sys/socket.h>
34 #include <arpa/inet.h>
35 #include <netinet/in.h>
36 #include <netinet/tcp.h>
39 #include <sys/varargs.h>
41 #include <sys/atomic.h>
49 #include <sys/errno.h>
51 typedef void (*sighandler_t
)(int);
55 fileOpenReadOnly
= O_RDONLY
,
56 fileOpenWriteOnly
= O_WRONLY
,
57 fileOpenReadWrite
= O_RDWR
,
58 fileOpenAppend
= O_CREAT
| O_APPEND
|O_RDWR
,
59 fileOpenCreat
= O_CREAT
|O_RDWR
,
60 // If set and fileOpenExcl is set, the
61 // open will fail if the file already exists.
62 fileOpenExcl
= O_EXCL
,
63 fileOpenTrunc
= O_TRUNC
68 mapProtRead
= PROT_READ
,
69 mapProtWrite
= PROT_WRITE
,
70 mapProcExec
= PROT_EXEC
,
71 mapProcNone
= PROT_NONE
76 mapShared
= MAP_SHARED
,
77 mapPrivate
= MAP_PRIVATE
,
79 // Interpret address exactly.
80 mapNoReserve
= MAP_NORESERVE
,
81 // Don't reserver swap space.
83 //mapAlign = MAP_ALIGN,
84 //for msync system call
90 #define MAX_FILE_LEN 1024
91 #define IDENTIFIER_LENGTH 64
92 #define ERROR_STRING_LENGTH 128
93 #define DEFAULT_VALUE_BUF_LENGTH 32
94 #define STATE_LENGTH 8
95 #define SYSTEMDB "SYSTEMDB"
96 #define DBAUSER "root"
97 #define DBAPASS "manager"
98 #define DEFAULT_CONFIG_FILE "/etc/csql/csql.conf"
99 #define LOCK_BUCKET_SIZE 2048
100 #define STMT_BUCKET_SIZE 1023
101 #define MAX_CHUNKS 20
102 #define PAGE_SIZE Conf::config.getPageSize()
103 #define MAX_MUTEX_PER_THREAD 3
104 #define MAX_THREADS_PER_PROCESS 30
105 #define MAX_FILE_PATH_LEN 1024
106 #define CHUNK_NAME_LEN 64
107 #define LOG_ROLLOVER_SIZE 20*1024*1024
109 #define BIT(x) (1 << (x))
110 #define SETBITS(x,y) ((x) |= (y))
111 #define CLEARBITS(x,y) ((x) &= (~(y)))
112 #define SETBIT(x,y) SETBITS((x), (BIT((y))))
113 #define CLEARBIT(x,y) CLEARBITS((x), (BIT((y))))
114 #define BITSET(x,y) ((x) & (BIT(y)))
117 typedef key_t shared_memory_key
;
118 typedef int shared_memory_id
;
125 static void* mmap(void* addr
, size_t len
, int prot
, int flags
, int fildes
, off_t off
);
126 static int munmap(caddr_t addr
, size_t len
);
127 static int openFile(const char *name
, FileOpenMode flags
, size_t size
);
128 static int closeFile(int fd
);
129 static int lockFile(int fd
);
130 static int unlockFile(int fd
);
131 static off_t
lseek(int fildes
, off_t offset
, int whence
);
132 static int openFileForAppend(const char* fname
, int flags
);
133 static int getFileSize(const char* fname
);
134 static size_t write(int fildes
, char *buf
, size_t size
);
135 static int msync(caddr_t addr
, size_t len
, int flags
);
136 static int fsync(int fildes
);
137 inline static size_t alignLong(size_t size
)
138 { return ((size
- 1) | (sizeof(long) - 1)) + 1;}
139 inline static size_t align(size_t size
)
140 { return ((size
- 1) | (sizeof(int) - 1)) + 1;}
141 static char* encrypt(const char * key
, const char *salt
);
142 static void* memset(void *src
, int c
, size_t size
);
143 static void* memcpy(void *src
, const void *dest
, size_t size
);
144 static int memcmp(const void *s1
, const void *s2
, size_t size
);
145 static int select(int nfds
, fd_set
*readfds
, fd_set
*writefds
,
146 fd_set
*exceptfds
, struct timeval
* timeout
);
148 static int usleep(int microsecs
);
149 static int sleep(int secs
);
150 static shared_memory_id
shm_create(shared_memory_key key
, size_t size
, int flag
);
151 static shared_memory_id
shm_open(shared_memory_key key
, size_t size
, int flag
);
152 static void* shm_attach(shared_memory_id id
, const void *ptr
, int flag
);
153 static int shm_detach (void*);
154 static int shmctl(int shmid
, int cmd
);
155 inline static double floor(double val
)
156 { return ::floor(val
); }
157 static sighandler_t
signal(int signum
, sighandler_t handler
);
159 static int gettimeofday(struct timeval
*tp
);
160 static struct tm
* localtime(long *secs
);
161 static pid_t
getpid()
162 { return ::getpid(); }
163 static pthread_t
getthrid()
164 { return ::pthread_self(); }
165 static char* getenv(const char *envVarName
);
166 static int setenv(const char *envVarName
, const char *value
);
168 static int kill(pid_t pid
, int sig
);
169 static bool atobool(char *value
);
170 static pid_t
createProcess(const char* cmdName
, const char *arg0
);
172 static size_t send(int fd
, const void *buf
, size_t len
, int flags
);
173 static size_t recv(int fd
, void *buf
, size_t len
, int flags
);
174 static int gethostname(char *hostname
, size_t len
);
175 static int strmatch(char *pattern
, char *str
);
176 static int msgget(key_t key
, int oflag
);
177 static int msgsnd(int msqid
, const void *ptr
, size_t len
, int flag
);
178 static ssize_t
msgrcv(int msqid
, void *ptr
, size_t len
, long type
, int flag
);
179 static int msgctl(int msqid
, int cmd
, struct msqid_ds
*buff
);
180 static int isValidIP(char ipstr
[] );
181 static bool fileExists(char *fileName
);
182 static char* strcasestr(char *s1
, const char *s2
);
183 static int getNoOfProcessors();