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Showing content from http://java-native-access.github.io/jna/5.17.0/javadoc/com/sun/jna/platform/mac/SystemB.html below:

SystemB (JNA API)

Alle Superschnittstellen:

LibCAPI, Library, Reboot, Resource

• Verschachtelte Klassen - Übersicht

  Verschachtelte Klassen

  static class 

  static class 

  static class 

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  Data type as part of IFmsgHdr

  static class 

  Data type as part of IFmsgHdr

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  Return type for sysctl CTL_NET,PF_ROUTE

  static class 

  Return type for sysctl CTL_NET,PF_ROUTE

  static class 

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  The statfs() routine returns information about a mounted file system.

  static class 

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  Return type for sysctl vm.swapusage

• Feldübersicht

  Felder

  static final int

  static final int

  static final int

  static final int

  static final int

  static final int

  static final int

  static final int

  static final int

  static final int

  static final int

  static final int

  static final int

  static final int

  static final int

  static final int

  static final int

  static final int

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  static final int

  static final int

  static final int

  static final int

  static final int

  static final int

  static final int

  static final int

  Von Schnittstelle geerbte Felder com.sun.jna.platform.unix.ResourceRLIMIT_AS, RLIMIT_CORE, RLIMIT_CPU, RLIMIT_DATA, RLIMIT_FSIZE, RLIMIT_LOCKS, RLIMIT_MEMLOCK, RLIMIT_MSGQUEUE, RLIMIT_NICE, RLIMIT_NLIMITS, RLIMIT_NOFILE, RLIMIT_NPROC, RLIMIT_RSS, RLIMIT_RTPRIO, RLIMIT_RTTIME, RLIMIT_SIGPENDING, RLIMIT_STACK
• Methodenübersicht

  int

  The getfsstat() function returns information about all mounted file systems.

  This function searches the group database for the given group name pointed to by the group id given by gid, returning the first one encountered.

  int

  Returns the process ID of the calling process.

  This function searches the password database for the given user uid, always returning the first one encountered.

  int

  The system's notion of the current Greenwich time and the current time zone is obtained with the gettimeofday() call, and set with the settimeofday() call.

  int

  The host_page_size function returns the page size for the given host.

  int

  The host_processor_info function returns information about processors.

  int

  The host_statistics function returns scheduling and virtual memory statistics concerning the host as specified by hostStat.

  int

  The host_statistics64 function returns 64-bit virtual memory statistics concerning the host as specified by hostStat.

  int

  The mach_host_self system call returns the calling thread's host name port.

  int

  Decrement the target port right's user reference count.

  int

  The mach_task_self system call returns the calling thread's task_self port.

  int

  proc_listpids(int type, int typeinfo, int[] buffer, int buffersize)

  Search through the current processes

  int

  Return resource usage information for the given pid, which can be a live process or a zombie.

  int

  Return in buffer a proc_*info structure corresponding to the flavor for the specified process

  int

  Return in buffer the name of the specified process

  int

  The sysctl() function retrieves system information and allows processes with appropriate privileges to set system information.

  int

  int

  The sysctlbyname() function accepts an ASCII representation of the name and internally looks up the integer name vector.

  int

  int

  This function accepts an ASCII representation of the name, looks up the integer name vector, and returns the numeric representation in the mib array pointed to by mibp.

  int

  Von Schnittstelle geerbte Methoden com.sun.jna.platform.unix.LibCAPIclose, getdomainname, getegid, getenv, geteuid, getgid, gethostname, getloadavg, getuid, msync, munmap, setdomainname, setegid, setenv, seteuid, setgid, sethostname, setuid, unsetenv Von Schnittstelle geerbte Methoden com.sun.jna.platform.unix.Rebootreboot

• Felddetails
  • INSTANCE
  • HOST_LOAD_INFO

    static final int HOST_LOAD_INFO

    Siehe auch:

    • Konstantenfeldwerte

  • HOST_VM_INFO

    static final int HOST_VM_INFO

    Siehe auch:

    • Konstantenfeldwerte

  • HOST_CPU_LOAD_INFO

    static final int HOST_CPU_LOAD_INFO

    Siehe auch:

    • Konstantenfeldwerte

  • HOST_VM_INFO64

    static final int HOST_VM_INFO64

    Siehe auch:

    • Konstantenfeldwerte

  • CPU_STATE_MAX

    static final int CPU_STATE_MAX

    Siehe auch:

    • Konstantenfeldwerte

  • CPU_STATE_USER

    static final int CPU_STATE_USER

    Siehe auch:

    • Konstantenfeldwerte

  • CPU_STATE_SYSTEM

    static final int CPU_STATE_SYSTEM

    Siehe auch:

    • Konstantenfeldwerte

  • CPU_STATE_IDLE

    static final int CPU_STATE_IDLE

    Siehe auch:

    • Konstantenfeldwerte

  • CPU_STATE_NICE

    static final int CPU_STATE_NICE

    Siehe auch:

    • Konstantenfeldwerte

  • PROCESSOR_BASIC_INFO

    static final int PROCESSOR_BASIC_INFO

    Siehe auch:

    • Konstantenfeldwerte

  • PROCESSOR_CPU_LOAD_INFO

    static final int PROCESSOR_CPU_LOAD_INFO

    Siehe auch:

    • Konstantenfeldwerte

  • UINT64_SIZE

    static final int UINT64_SIZE

  • INT_SIZE

    static final int INT_SIZE

  • MAXCOMLEN

    static final int MAXCOMLEN

    Siehe auch:

    • Konstantenfeldwerte

  • MAXPATHLEN

    static final int MAXPATHLEN

    Siehe auch:

    • Konstantenfeldwerte

  • PROC_PIDPATHINFO_MAXSIZE

    static final int PROC_PIDPATHINFO_MAXSIZE

    Siehe auch:

    • Konstantenfeldwerte

  • PROC_ALL_PIDS

    static final int PROC_ALL_PIDS

    Siehe auch:

    • Konstantenfeldwerte

  • PROC_PIDTASKALLINFO

    static final int PROC_PIDTASKALLINFO

    Siehe auch:

    • Konstantenfeldwerte

  • PROC_PIDTBSDINFO

    static final int PROC_PIDTBSDINFO

    Siehe auch:

    • Konstantenfeldwerte

  • PROC_PIDTASKINFO

    static final int PROC_PIDTASKINFO

    Siehe auch:

    • Konstantenfeldwerte

  • PROC_PIDVNODEPATHINFO

    static final int PROC_PIDVNODEPATHINFO

    Siehe auch:

    • Konstantenfeldwerte

  • MFSTYPENAMELEN

    static final int MFSTYPENAMELEN

    Siehe auch:

    • Konstantenfeldwerte

  • MNAMELEN

    static final int MNAMELEN

    Siehe auch:

    • Konstantenfeldwerte

  • MNT_WAIT

    static final int MNT_WAIT

    Siehe auch:

    • Konstantenfeldwerte

  • MNT_NOWAIT

    static final int MNT_NOWAIT

    Siehe auch:

    • Konstantenfeldwerte

  • MNT_DWAIT

    static final int MNT_DWAIT

    Siehe auch:

    • Konstantenfeldwerte

  • RUSAGE_INFO_V2

    static final int RUSAGE_INFO_V2

    Siehe auch:

    • Konstantenfeldwerte

• Methodendetails
  • gettimeofday

    The system's notion of the current Greenwich time and the current time zone is obtained with the gettimeofday() call, and set with the settimeofday() call. The time is expressed in seconds and microseconds since midnight (0 hour), January 1, 1970. The resolution of the system clock is hardware dependent, and the time may be updated continuously or in ``ticks.'' If tp is NULL and tzp is non-NULL, gettimeofday() will populate the timezone struct in tzp. If tp is non-NULL and tzp is NULL, then only the timeval struct in tp is populated. If both tp and tzp are NULL, nothing is returned.

    Parameter:

    tp - Timeval structure

    tzp - Timezone structure

    Gibt zurück:

    A 0 return value indicates that the call succeeded. A -1 return value indicates an error occurred, and in this case an error code is stored into the global variable errno.

  • mach_host_self

    int mach_host_self()

    The mach_host_self system call returns the calling thread's host name port. It has an effect equivalent to receiving a send right for the host port.

    Gibt zurück:

    the host's name port

  • mach_task_self

    int mach_task_self()

    The mach_task_self system call returns the calling thread's task_self port. It has an effect equivalent to receiving a send right for the task's kernel port.

    Gibt zurück:

    the task's kernel port

  • mach_port_deallocate

    int mach_port_deallocate(int port, int name)

    Decrement the target port right's user reference count.

    Parameter:

    port - The port holding the right.

    name - The port's name for the right.

    Gibt zurück:

    0 if successful, a kern_return_t code otherwise.

  • host_page_size

    The host_page_size function returns the page size for the given host.

    Parameter:

    hostPort - The name (or control) port for the host for which the page size is desired.

    pPageSize - The host's page size (in bytes), set on success.

    Gibt zurück:

    0 on success; sets errno on failure

  • host_statistics

    The host_statistics function returns scheduling and virtual memory statistics concerning the host as specified by hostStat.

    Parameter:

    hostPort - The control port for the host for which information is to be obtained.

    hostStat - The type of statistics desired (HOST_LOAD_INFO, HOST_VM_INFO, or HOST_CPU_LOAD_INFO)

    stats - Statistics about the specified host.

    count - On input, the maximum size of the buffer; on output, the size returned (in natural-sized units).

    Gibt zurück:

    0 on success; sets errno on failure

  • host_statistics64

    The host_statistics64 function returns 64-bit virtual memory statistics concerning the host as specified by hostStat.

    Parameter:

    hostPort - The control port for the host for which information is to be obtained.

    hostStat - The type of statistics desired (HOST_VM_INFO64)

    stats - Statistics about the specified host.

    count - On input, the maximum size of the buffer; on output, the size returned (in natural-sized units).

    Gibt zurück:

    0 on success; sets errno on failure

  • sysctl

    The sysctl() function retrieves system information and allows processes with appropriate privileges to set system information. The information available from sysctl() consists of integers, strings, and tables.

    The state is described using a "Management Information Base" (MIB) style name, listed in name, which is a namelen length array of integers.

    The information is copied into the buffer specified by oldp. The size of the buffer is given by the location specified by oldlenp before the call, and that location gives the amount of data copied after a successful call and after a call that returns with the error code ENOMEM. If the amount of data available is greater than the size of the buffer supplied, the call supplies as much data as fits in the buffer provided and returns with the error code ENOMEM. If the old value is not desired, oldp and oldlenp should be set to NULL.

    The size of the available data can be determined by calling sysctl() with the NULL argument for oldp. The size of the available data will be returned in the location pointed to by oldlenp. For some operations, the amount of space may change often. For these operations, the system attempts to round up so that the returned size is large enough for a call to return the data shortly thereafter.

    To set a new value, newp is set to point to a buffer of length newlen from which the requested value is to be taken. If a new value is not to be set, newp should be set to NULL and newlen set to 0.

    Parameter:

    name - a Management Information Base (MIB) array of integers

    namelen - the length of the array in name

    oldp - A buffer to hold the information retrieved

    oldlenp - Size of the buffer, a pointer to a LibCAPI.size_t value

    newp - To set a new value, a buffer of information to be written. May be null if no value is to be set.

    newlen - Size of the information to be written. May be 0 if no value is to be set.

    Gibt zurück:

    0 on success; sets errno on failure

  • sysctl
  • sysctlbyname

    The sysctlbyname() function accepts an ASCII representation of the name and internally looks up the integer name vector. Apart from that, it behaves the same as the standard sysctl() function.

    Parameter:

    name - ASCII representation of the MIB name

    oldp - A buffer to hold the information retrieved

    oldlenp - Size of the buffer, a pointer to a LibCAPI.size_t value

    newp - To set a new value, a buffer of information to be written. May be null if no value is to be set.

    newlen - Size of the information to be written. May be 0 if no value is to be set.

    Gibt zurück:

    0 on success; sets errno on failure

  • sysctlbyname
  • sysctlnametomib

    This function accepts an ASCII representation of the name, looks up the integer name vector, and returns the numeric representation in the mib array pointed to by mibp. The number of elements in the mib array is given by the location specified by sizep before the call, and that location gives the number of entries copied after a successful call. The resulting mib and size may be used in subsequent sysctl() calls to get the data associated with the requested ASCII name. This interface is intended for use by applications that want to repeatedly request the same variable (the sysctl() function runs in about a third the time as the same request made via the sysctlbyname() function).

    The number of elements in the mib array can be determined by calling sysctlnametomib() with the NULL argument for mibp.

    The sysctlnametomib() function is also useful for fetching mib prefixes. If size on input is greater than the number of elements written, the array still contains the additional elements which may be written programmatically.

    Parameter:

    name - ASCII representation of the name

    mibp - Integer array containing the corresponding name vector.

    sizep - On input, number of elements in the returned array; on output, the number of entries copied.

    Gibt zurück:

    0 on success; sets errno on failure

  • sysctlnametomib
  • host_processor_info

    The host_processor_info function returns information about processors.

    Parameter:

    hostPort - The control port for the host for which information is to be obtained.

    flavor - The type of information requested.

    procCount - Pointer to the number of processors

    procInfo - Pointer to the structure corresponding to the requested flavor

    procInfoCount - Pointer to number of elements in the returned structure

    Gibt zurück:

    0 on success; sets errno on failure

  • getpwuid

    This function searches the password database for the given user uid, always returning the first one encountered.

    Parameter:

    uid - The user ID

    Gibt zurück:

    a Passwd structure matching that user

  • getgrgid

    This function searches the group database for the given group name pointed to by the group id given by gid, returning the first one encountered. Identical group gids may result in undefined behavior.

    Parameter:

    gid - The group ID

    Gibt zurück:

    a Group structure matching that group

  • proc_listpids

    int proc_listpids(int type, int typeinfo, int[] buffer, int buffersize)

    Search through the current processes

    Parameter:

    type - types of processes to be searched

    typeinfo - adjunct information for type

    buffer - a C array of int-sized values to be filled with process identifiers that hold an open file reference matching the specified path or volume. Pass NULL to obtain the minimum buffer size needed to hold the currently active processes.

    buffersize - the size (in bytes) of the provided buffer.

    Gibt zurück:

    the number of bytes of data returned in the provided buffer; -1 if an error was encountered;

  • proc_pidinfo int proc_pidinfo(int pid, int flavor, long arg, Structure buffer, int buffersize)

    Return in buffer a proc_*info structure corresponding to the flavor for the specified process

    Parameter:

    pid - the process identifier

    flavor - the type of information requested

    arg - argument possibly needed for some flavors

    buffer - holds results

    buffersize - size of results

    Gibt zurück:

    the number of bytes of data returned in the provided buffer; -1 if an error was encountered;

  • proc_pidpath int proc_pidpath(int pid, Pointer buffer, int buffersize)

    Return in buffer the name of the specified process

    Parameter:

    pid - the process identifier

    buffer - holds results

    buffersize - size of results

    Gibt zurück:

    the length of the name returned in buffer if successful; 0 otherwise

  • proc_pid_rusage

    Return resource usage information for the given pid, which can be a live process or a zombie.

    Parameter:

    pid - the process identifier

    flavor - the type of information requested

    buffer - holds results

    Gibt zurück:

    0 on success; or -1 on failure, with errno set to indicate the specific error.

  • getfsstat64

    The getfsstat() function returns information about all mounted file systems. The buf argument is a pointer to an array of statfs structures. Fields that are undefined for a particular file system are set to -1. The buffer is filled with an array of statfs structures, one for each mounted file system up to the size specified by bufsize.

    Parameter:

    buf - Array of statfs structures that will be filled with results. If buf is given as NULL, getfsstat() returns just the number of mounted file systems.

    bufsize - Size of the buffer to fill

    flags - If flags is set to MNT_NOWAIT, getfsstat() will directly return the information retained in the kernel to avoid delays caused by waiting for updated information from a file system that is perhaps temporarily unable to respond. Some of the information returned may be out of date, however; if flags is set to MNT_WAIT or MNT_DWAIT instead, getfsstat() will request updated information from each mounted filesystem before returning.

    Gibt zurück:

    Upon successful completion, the number of statfs structures is returned. Otherwise, -1 is returned and the global variable errno is set to indicate the error.

  • getpid

    int getpid()

    Returns the process ID of the calling process. The ID is guaranteed to be unique and is useful for constructing temporary file names.

    Gibt zurück:

    the process ID of the calling process.

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