X-Git-Url: https://gapil.gnulinux.it/gitweb/?p=gapil.git;a=blobdiff_plain;f=sources%2FGapil.h;fp=sources%2FGapil.h;h=60b411a7aa9c2c452ca7ae2c238316f63005280d;hp=0000000000000000000000000000000000000000;hb=b6b51ee53b49d44c381887da73086586acf6e379;hpb=b1ead1b930038e4f7cd6ee7f737d7ee4699a068c

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+/* Gapil.h
+ * 
+ * Copyright (C) 2002 Simone Piccardi
+ * 
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at
+ * your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+/*****************************************************************************
+ *
+ * File Gapil.h: 
+ * Set of definition for service routines
+ *
+ * Author: S. Piccardi
+ *
+ * $Id: Gapil.h,v 1.10 2003/05/02 09:56:41 piccardi Exp $
+ *
+ *****************************************************************************/
+#include <sys/sem.h>                           /* IPC semaphore declarations */
+#include <sys/shm.h>                       /* IPC shared memory declarations */
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>                               /* unix standard functions */
+#include <fcntl.h>                          /* file control (lock) functions */
+#include <signal.h>                          /* signal handling declarations */
+#include <dirent.h>                              /* directory scan functions */
+/*
+ * Definition of semun struct; used to implement a MutexXXXX API To
+ * create a Mutex use an underlaying semaphore and init it; we put
+ * here all the needed data structures
+ */
+/* use this definition, get from the man pages */
+#if defined(__GNU_LIBRARY__) && !defined(_SEM_SEMUN_UNDEFINED)
+/* union semun is defined by including <sys/sem.h> */
+#else
+/* according to X/OPEN we have to define it ourselves */
+union semun {
+  int val;                    /* value for SETVAL */
+  struct semid_ds *buf;       /* buffer for IPC_STAT, IPC_SET */
+  unsigned short int *array;  /* array for GETALL, SETALL */
+  struct seminfo *__buf;      /* buffer for IPC_INFO */
+};
+#endif
+/*
+ * Mutex handling Functions
+ */
+/* Function MutexCreate: create a mutex. See Mutex.c */
+inline int MutexCreate(key_t ipc_key);
+/* Function MutexFind: get the mutex ID given fomr IPC key. See Mutex.c */
+inline int MutexFind(key_t ipc_key);
+/* Function MutexRead: read the current value of the mutex. See Mutex.c */
+inline int MutexRead(int sem_id);
+/* Function MutexLock: to lock a mutex/semaphore. See Mutex.c */
+inline int MutexLock(int sem_id);
+/* Function MutexUnlock: to unlock a mutex/semaphore. See Mutex.c */
+inline int MutexUnlock(int sem_id);
+/* Function MutexRemove: remove the mutex/semphore. See Mutex.c */
+inline int MutexRemove(int sem_id);
+/* Function CreateMutex: create a mutex (using file locking). See Mutex.c */
+inline int CreateMutex(const char *path_name);
+/* Function UnlockMutex: find a mutex (using file locking). See Mutex.c */
+inline int FindMutex(const char *path_name);
+/* Function LockMutex: acquire a mutex (using file locking). See Mutex.c */
+inline int LockMutex(int fd);
+/* Function UnlockMutex: release a mutex (using file locking). See Mutex.c */
+inline int UnlockMutex(int fd);
+/* Function ReadMutex: read a mutex (using file locking). See Mutex.c */
+inline int ReadMutex(int fd);
+/* Function RemoveMutex: remove a mutex (using file locking). See Mutex.c */
+inline int RemoveMutex(const char *path_name);
+/* 
+ * Lock files function: to create and destroy lock files
+ */
+/* Function LockFile: create a lock file. See FileLock.c */
+inline int LockFile(const char* path_name);
+/* Function UnlockFile: remove a lock file. See FileLock.c */
+inline int UnlockFile(const char* path_name);
+/*
+ * Signal Handling Functions
+ */
+typedef void SigFunc(int);
+/* Function Signal: Initialize a signal handler. See SigHand.c */
+SigFunc * Signal(int signo, SigFunc *func);
+/* Function HandSigCHLD: to handle SIGCHILD. See SigHand.c */
+void HandSigCHLD(int sig);
+/* 
+ * Socket service functions
+ */
+/* Function FullRead: to read from a socket. See FullRead.c */
+ssize_t FullRead(int fd, void *buf, size_t count);
+/* Function FullWrite: to read from a socket. See FullWrite.c */
+ssize_t FullWrite(int fd, const void *buf, size_t count);
+/*
+ * File miscellaneous
+ */
+/* Function DirScan: simple scan for a directory. See DirScan.c */
+int DirScan(char * dirname, int(*compute)(struct dirent *));
+/*
+ * Shared memory handling functions. See SharedMem.c
+ */
+/* Function ShmCreate: create a SysV shared memory */
+void * ShmCreate(key_t ipc_key, int shm_size, int perm, int fill);
+/* Function ShmFind: find an existing SysV shared memory */
+void * ShmFind(key_t ipc_key, int shm_size);
+/* Function ShmRemove: remove a SysV shared memory */
+int ShmRemove(key_t ipc_key, void * shm_ptr);
+/* Function CreateShm: create a POSIX shared memory */
+void * CreateShm(char * shm_name, off_t shm_size, int perm, int fill);
+/* Function FindShm: find an existing POSIX shared memory */
+void * FindShm(char * shm_name, off_t shm_size);
+/* Function RemoveShm: remove a POSIX shared memory */
+int RemoveShm(char * shm_name);