/*

 * Copyright 1998-2005 Sun Microsystems, Inc.  All Rights Reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code 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

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

 * CA 95054 USA or visit www.sun.com if you need additional information or

 * have any questions.

 *

 */

/*

 * HotSpot integration note:

 *

 * This is a consolidation of these two files:

 *      src/share/hpi/export/hpi.h      1.15  99/06/18  JDK1.3 beta build I

 *      src/share/hpi/export/dll.h      1.3   98/09/15  JDK1.3 beta build I

 * from the classic VM.

 *

 * bool_t is a type in the classic VM, and we define it here,

 * but in the future this should be a jboolean.

 *

 * The files are included verbatim expect for local includes removed from hpi.h.

 */

#ifndef _JAVASOFT_HPI_H_

#define _JAVASOFT_HPI_H_

#ifdef __cplusplus

extern "C" {

#endif

/* A classic VMism that should become a jboolean.  Fix in 1.2.1? */

typedef enum { HPI_FALSE = 0, HPI_TRUE = 1 } bool_t;

/*

 * DLL.H: A common interface for helper DLLs loaded by the VM.

 * Each library exports the main entry point "DLL_Initialize". Through

 * that function the programmer can obtain a function pointer which has

 * type "GetInterfaceFunc." Through the function pointer the programmer

 * can obtain other interfaces supported in the DLL.

 */

typedef jint (JNICALL * GetInterfaceFunc)

       (void **intfP, const char *name, jint ver);

jint JNICALL DLL_Initialize(GetInterfaceFunc *, void *args);

/*

 * Host Porting Interface. This defines the "porting layer" for

 * POSIX.1 compliant operating systems.

 */

/*

 * memory allocations

 */

typedef struct {

    /*

     * Malloc must return a unique pointer if size == 0.

     */

  void *  (*Malloc)(size_t size);

  void *  (*Realloc)(void *ptr, size_t new_size);

    /*

     * Free must allow ptr == NULL to be a no-op.

     */

  void    (*Free)(void *ptr);

    /*

     * Calloc must return a unique pointer for if

     * n_item == 0 || item_size == 0.

     */

  void *  (*Calloc)(size_t n_item, size_t item_size);

  char *  (*Strdup)(const char *str);

  void *  (*MapMem)(size_t req_size, size_t *maped_size);

  void *  (*UnmapMem)(void *req_addr, size_t req_size, size_t *unmap_size);

  /*

   * CommitMem should round the ptr down to the nearest page and

   * round the size up to the nearest page so that the committed

   * region is at least as large as the requested region.

   */

  void *  (*CommitMem)(void *ptr, size_t size, size_t *actual);

  /*

   * sysDecommitMem should round the ptr up to the nearest page and

   * round the size down to the nearest page so that the decommitted

   * region is no greater than the requested region.

   */

  void *  (*DecommitMem)(void *ptr, size_t size, size_t *actual);

#define HPI_PAGE_ALIGNMENT          (64 * 1024)

  void *  (*AllocBlock)(size_t size, void **headP);

  void    (*FreeBlock)(void *head);

} HPI_MemoryInterface;

/*

 * dynamic linking libraries

 */

typedef struct {

  void   (*BuildLibName)(char *buf, int buf_len, char *path, const char *name);

  int    (*BuildFunName)(char *name, int name_len, int arg_size, int en_idx);

  void * (*LoadLibrary)(const char *name, char *err_buf, int err_buflen);

  void   (*UnloadLibrary)(void *lib);

  void * (*FindLibraryEntry)(void *lib, const char *name);

} HPI_LibraryInterface;

typedef void (*signal_handler_t)(int sig, void *siginfo, void *context);

#define HPI_SIG_DFL (signal_handler_t)0

#define HPI_SIG_ERR (signal_handler_t)-1

#define HPI_SIG_IGN (signal_handler_t)1

typedef struct {

  char *name; /* name such as green/native threads. */

  int  isMP;

} HPI_SysInfo;

typedef struct {

  HPI_SysInfo *    (*GetSysInfo)(void);

  long             (*GetMilliTicks)(void);

  jlong            (*TimeMillis)(void);

  signal_handler_t (*Signal)(int sig, signal_handler_t handler);

  void             (*Raise)(int sig);

  void             (*SignalNotify)(int sig);

  int              (*SignalWait)(void);

  int              (*Shutdown)(void);

  int              (*SetLoggingLevel)(int level);

  bool_t           (*SetMonitoringOn)(bool_t on);

  int              (*GetLastErrorString)(char *buf, int len);

} HPI_SystemInterface;

/*

 * threads and monitors

 */

typedef struct  sys_thread sys_thread_t;

typedef struct  sys_mon sys_mon_t;

#define HPI_OK          0

#define HPI_ERR        -1

#define HPI_INTRPT     -2    /* Operation was interrupted */

#define HPI_TIMEOUT    -3    /* A timer ran out */

#define HPI_NOMEM      -5    /* Ran out of memory */

#define HPI_NORESOURCE -6    /* Ran out of some system resource */

/* There are three basic states: RUNNABLE, MONITOR_WAIT, and CONDVAR_WAIT.

 * When the thread is suspended in any of these states, the

 * HPI_THREAD_SUSPENDED bit will be set

 */

enum {

    HPI_THREAD_RUNNABLE = 1,

    HPI_THREAD_MONITOR_WAIT,

    HPI_THREAD_CONDVAR_WAIT

};

#define HPI_MINIMUM_PRIORITY        1

#define HPI_MAXIMUM_PRIORITY        10

#define HPI_NORMAL_PRIORITY         5

#define HPI_THREAD_SUSPENDED        0x8000

#define HPI_THREAD_INTERRUPTED      0x4000

typedef struct {

    sys_thread_t *owner;

    int          entry_count;

    sys_thread_t **monitor_waiters;

    sys_thread_t **condvar_waiters;

    int          sz_monitor_waiters;

    int          sz_condvar_waiters;

    int          n_monitor_waiters;

    int          n_condvar_waiters;

} sys_mon_info;

typedef struct {

  int            (*ThreadBootstrap)(sys_thread_t **tidP,

                                    sys_mon_t **qlockP,

                                    int nReservedBytes);

  int            (*ThreadCreate)(sys_thread_t **tidP,

                                 long stk_size,

                                 void (*func)(void *),

                                 void *arg);

  sys_thread_t * (*ThreadSelf)(void);

  void           (*ThreadYield)(void);

  int            (*ThreadSuspend)(sys_thread_t *tid);

  int            (*ThreadResume)(sys_thread_t *tid);

  int            (*ThreadSetPriority)(sys_thread_t *tid, int prio);

  int            (*ThreadGetPriority)(sys_thread_t *tid, int *prio);

  void *         (*ThreadStackPointer)(sys_thread_t *tid);

  void *         (*ThreadStackTop)(sys_thread_t *tid);

  long *         (*ThreadRegs)(sys_thread_t *tid, int *regs);

  int            (*ThreadSingle)(void);

  void           (*ThreadMulti)(void);

  int            (*ThreadEnumerateOver)(int (*func)(sys_thread_t *, void *),

                                        void *arg);

  int            (*ThreadCheckStack)(void);

  void           (*ThreadPostException)(sys_thread_t *tid, void *arg);

  void           (*ThreadInterrupt)(sys_thread_t *tid);

  int            (*ThreadIsInterrupted)(sys_thread_t *tid, int clear);

  int            (*ThreadAlloc)(sys_thread_t **tidP);

  int            (*ThreadFree)(void);

  jlong          (*ThreadCPUTime)(void);

  int            (*ThreadGetStatus)(sys_thread_t *tid, sys_mon_t **monitor);

  void *         (*ThreadInterruptEvent)(void);

  void *         (*ThreadNativeID)(sys_thread_t *tid);

  /* These three functions are used by the CPU time profiler.

   * sysThreadIsRunning determines whether the thread is running (not just

   * runnable). It is only safe to call this function after calling

   * sysThreadProfSuspend.

   */

  bool_t         (*ThreadIsRunning)(sys_thread_t *tid);

  void           (*ThreadProfSuspend)(sys_thread_t *tid);

  void           (*ThreadProfResume)(sys_thread_t *tid);

  int            (*AdjustTimeSlice)(int ms);

  size_t         (*MonitorSizeof)(void);

  int            (*MonitorInit)(sys_mon_t *mid);

  int            (*MonitorDestroy)(sys_mon_t *mid);

  int            (*MonitorEnter)(sys_thread_t *self, sys_mon_t *mid);

  bool_t         (*MonitorEntered)(sys_thread_t *self, sys_mon_t *mid);

  int            (*MonitorExit)(sys_thread_t *self, sys_mon_t *mid);

  int            (*MonitorNotify)(sys_thread_t *self, sys_mon_t *mid);

  int            (*MonitorNotifyAll)(sys_thread_t *self, sys_mon_t *mid);

  int            (*MonitorWait)(sys_thread_t *self, sys_mon_t *mid, jlong ms);

  bool_t         (*MonitorInUse)(sys_mon_t *mid);

  sys_thread_t * (*MonitorOwner)(sys_mon_t *mid);

  int            (*MonitorGetInfo)(sys_mon_t *mid, sys_mon_info *info);

} HPI_ThreadInterface;

/*

 * files

 */

#define HPI_FILETYPE_REGULAR    (0)

#define HPI_FILETYPE_DIRECTORY  (1)

#define HPI_FILETYPE_OTHER      (2)

typedef struct {

  char *         (*NativePath)(char *path);

  int            (*FileType)(const char *path);

  int            (*Open)(const char *name, int openMode, int filePerm);

  int            (*Close)(int fd);

  jlong          (*Seek)(int fd, jlong offset, int whence);

  int            (*SetLength)(int fd, jlong length);

  int            (*Sync)(int fd);

  int            (*Available)(int fd, jlong *bytes);

  size_t         (*Read)(int fd, void *buf, unsigned int nBytes);

  size_t         (*Write)(int fd, const void *buf, unsigned int nBytes);

  int            (*FileSizeFD)(int fd, jlong *size);

} HPI_FileInterface;

/*

 * sockets

 */

struct sockaddr;

struct hostent;

typedef struct {

  int              (*Close)(int fd);

  long             (*Available)(int fd, jint *pbytes);

  int              (*Connect)(int fd, struct sockaddr *him, int len);

  int              (*Accept)(int fd, struct sockaddr *him, int *len);

  int              (*SendTo)(int fd, char *buf, int len, int flags,

                             struct sockaddr *to, int tolen);

  int              (*RecvFrom)(int fd, char *buf, int nbytes, int flags,

                               struct sockaddr *from, int *fromlen);

  int              (*Listen)(int fd, long count);

  int              (*Recv)(int fd, char *buf, int nBytes, int flags);

  int              (*Send)(int fd, char *buf, int nBytes, int flags);

  int              (*Timeout)(int fd, long timeout);

  struct hostent * (*GetHostByName)(char *hostname);

  int              (*Socket)(int domain, int type, int protocol);

  int              (*SocketShutdown)(int fd, int howto);

  int              (*Bind)(int fd, struct sockaddr *him, int len);

  int              (*GetSocketName)(int fd, struct sockaddr *him, int *len);

  int              (*GetHostName)(char *hostname, int namelen);

  struct hostent * (*GetHostByAddr)(const char *hostname, int len, int type);

  int              (*SocketGetOption)(int fd, int level, int optname, char *optval, int *optlen);

  int              (*SocketSetOption)(int fd, int level, int optname, const char *optval, int optlen);

  struct protoent * (*GetProtoByName)(char* name);

} HPI_SocketInterface;

/*

 * callbacks.

 */

typedef struct vm_calls {

    int    (*jio_fprintf)(FILE *fp, const char *fmt, ...);

    void   (*panic)(const char *fmt, ...);

    void   (*monitorRegister)(sys_mon_t *mid, char *info_str);

    void   (*monitorContendedEnter)(sys_thread_t *self, sys_mon_t *mid);

    void   (*monitorContendedEntered)(sys_thread_t *self, sys_mon_t *mid);

    void   (*monitorContendedExit)(sys_thread_t *self, sys_mon_t *mid);

} vm_calls_t;

#ifdef __cplusplus

}

#endif

#endif /* !_JAVASOFT_HPI_H_ */