util/system/flock.h


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#pragma once
 
#include "error.h"
#include "defaults.h" 
#include "file.h"
 
#if defined(_unix_) 
 
    #include <sys/file.h>
    #include <fcntl.h>
 
static inline int Flock(int fd, int op) {
    return flock(fd, op);
}

#else // not _unix_

    #ifdef __cplusplus
extern "C" { 
    #endif
 
    #define LOCK_SH 1 /* shared lock */
    #define LOCK_EX 2 /* exclusive lock */
    #define LOCK_NB 4 /* don't block when locking */
    #define LOCK_UN 8 /* unlock */
 
    int Flock(void* hndl, int operation);
    int flock(int fd, int operation);
    int fsync(int fd);
 
    #ifdef __cplusplus
} 
    #endif
 
#endif // not _unix_