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/*

 * @(#)jdwpTransport.h        1.7 03/12/19

 *

 * Copyright 2004 Sun Microsystems, Inc. All rights reserved.

 * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.

 */

/*

 * Java Debug Wire Protocol Transport Service Provider Interface.

 */

#ifndef JDWPTRANSPORT_H

#define JDWPTRANSPORT_H

#include "jni.h"

enum {

    JDWPTRANSPORT_VERSION_1_0 = 0x00010000

};

#ifdef __cplusplus

extern "C" {

#endif

struct jdwpTransportNativeInterface_;

struct _jdwpTransportEnv;

#ifdef __cplusplus

typedef _jdwpTransportEnv jdwpTransportEnv;

#else

typedef const struct jdwpTransportNativeInterface_ *jdwpTransportEnv;

#endif /* __cplusplus */

/*

 * Errors. Universal errors with JVMTI/JVMDI equivalents keep the

 * values the same.

 */

typedef enum {

    JDWPTRANSPORT_ERROR_NONE = 0,

    JDWPTRANSPORT_ERROR_ILLEGAL_ARGUMENT = 103,

    JDWPTRANSPORT_ERROR_OUT_OF_MEMORY = 110,

    JDWPTRANSPORT_ERROR_INTERNAL = 113,

    JDWPTRANSPORT_ERROR_ILLEGAL_STATE = 201,

    JDWPTRANSPORT_ERROR_IO_ERROR = 202,

    JDWPTRANSPORT_ERROR_TIMEOUT = 203,

    JDWPTRANSPORT_ERROR_MSG_NOT_AVAILABLE = 204

} jdwpTransportError;

/*

 * Structure to define capabilities

 */

typedef struct {

    unsigned int can_timeout_attach     :1;

    unsigned int can_timeout_accept     :1;

    unsigned int can_timeout_handshake  :1;

    unsigned int reserved3              :1;

    unsigned int reserved4              :1;

    unsigned int reserved5              :1;

    unsigned int reserved6              :1;

    unsigned int reserved7              :1;

    unsigned int reserved8              :1;

    unsigned int reserved9              :1;

    unsigned int reserved10             :1;

    unsigned int reserved11             :1;

    unsigned int reserved12             :1;

    unsigned int reserved13             :1;

    unsigned int reserved14                :1;

    unsigned int reserved15                :1;

} JDWPTransportCapabilities;

/*

 * Structures to define packet layout.

 * 

 * See: http://java.sun.com/j2se/1.5/docs/guide/jpda/jdwp-spec.html

 */

enum {

    JDWPTRANSPORT_FLAGS_NONE         = 0x0,

    JDWPTRANSPORT_FLAGS_REPLY         = 0x80

};

typedef struct {

    jint len; 

    jint id;

    jbyte flags;

    jbyte cmdSet;

    jbyte cmd;

    jbyte *data;

} jdwpCmdPacket;

typedef struct {

    jint len;

    jint id;

    jbyte flags;

    jshort errorCode;

    jbyte *data;

} jdwpReplyPacket;

typedef struct {

    union {

        jdwpCmdPacket cmd;

        jdwpReplyPacket reply;

    } type;

} jdwpPacket;

/*

 * JDWP functions called by the transport.

 */

typedef struct jdwpTransportCallback {

    void *(*alloc)(jint numBytes);   /* Call this for all allocations */

    void (*free)(void *buffer);      /* Call this for all deallocations */

} jdwpTransportCallback;

typedef jint (JNICALL *jdwpTransport_OnLoad_t)(JavaVM *jvm,

                                               jdwpTransportCallback *callback,

                                               jint version,

                                                     jdwpTransportEnv** env);

/* Function Interface */

struct jdwpTransportNativeInterface_ {

    /*  1 :  RESERVED */

    void *reserved1;

    /*        2 : Get Capabilities */

    jdwpTransportError (JNICALL *GetCapabilities)(jdwpTransportEnv* env,

         JDWPTransportCapabilities *capabilities_ptr);

    /*  3 : Attach */

    jdwpTransportError (JNICALL *Attach)(jdwpTransportEnv* env,

        const char* address,

        jlong attach_timeout,

        jlong handshake_timeout);

    /*  4: StartListening */

    jdwpTransportError (JNICALL *StartListening)(jdwpTransportEnv* env,

        const char* address, 

        char** actual_address);

    /*  5: StopListening */

    jdwpTransportError (JNICALL *StopListening)(jdwpTransportEnv* env);

    /*  6: Accept */

    jdwpTransportError (JNICALL *Accept)(jdwpTransportEnv* env,

        jlong accept_timeout, 

        jlong handshake_timeout);

    /*  7: IsOpen */

    jboolean (JNICALL *IsOpen)(jdwpTransportEnv* env);

    /*  8: Close */

    jdwpTransportError (JNICALL *Close)(jdwpTransportEnv* env);

    /*  9: ReadPacket */

    jdwpTransportError (JNICALL *ReadPacket)(jdwpTransportEnv* env,

        jdwpPacket *pkt);

    /*  10: Write Packet */

    jdwpTransportError (JNICALL *WritePacket)(jdwpTransportEnv* env,

        const jdwpPacket* pkt);

    /*  11:  GetLastError */

    jdwpTransportError (JNICALL *GetLastError)(jdwpTransportEnv* env,

        char** error);

};

/*

 * Use inlined functions so that C++ code can use syntax such as

 *        env->Attach("mymachine:5000", 10*1000, 0);

 *

 * rather than using C's :-

 *

 *        (*env)->Attach(env, "mymachine:5000", 10*1000, 0);

 */

struct _jdwpTransportEnv {

    const struct jdwpTransportNativeInterface_ *functions;

#ifdef __cplusplus

    jdwpTransportError GetCapabilities(JDWPTransportCapabilities *capabilities_ptr) {

        return functions->GetCapabilities(this, capabilities_ptr);

    }

    jdwpTransportError Attach(const char* address, jlong attach_timeout,

                jlong handshake_timeout) {

        return functions->Attach(this, address, attach_timeout, handshake_timeout);

    }

    jdwpTransportError StartListening(const char* address,

                char** actual_address) {

        return functions->StartListening(this, address, actual_address);

    }

    jdwpTransportError StopListening(void) {

        return functions->StopListening(this);

    }

    jdwpTransportError Accept(jlong accept_timeout, jlong handshake_timeout) {

        return functions->Accept(this, accept_timeout, handshake_timeout);

    }

    jboolean IsOpen(void) {

        return functions->IsOpen(this);

    }

    jdwpTransportError Close(void) {

        return functions->Close(this);

    }

    jdwpTransportError ReadPacket(jdwpPacket *pkt) {

        return functions->ReadPacket(this, pkt);

    }

    jdwpTransportError WritePacket(const jdwpPacket* pkt) {

        return functions->WritePacket(this, pkt);

    }

    jdwpTransportError GetLastError(char** error) {

        return functions->GetLastError(this, error);

    }

#endif /* __cplusplus */

};

#ifdef __cplusplus

} /* extern "C" */

#endif /* __cplusplus */

#endif /* JDWPTRANSPORT_H */