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J. Duke
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hotspot/src/share/vm/runtime/hpi.hpp
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224
hotspot/src/share/vm/runtime/hpi.hpp
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/*
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* Copyright 1998-2006 Sun Microsystems, Inc. All Rights Reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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* CA 95054 USA or visit www.sun.com if you need additional information or
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* have any questions.
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*
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*/
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//
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// C++ wrapper to HPI.
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//
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class hpi : AllStatic {
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private:
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static GetInterfaceFunc _get_interface;
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static HPI_FileInterface* _file;
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static HPI_SocketInterface* _socket;
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static HPI_LibraryInterface* _library;
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static HPI_SystemInterface* _system;
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private:
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static void initialize_get_interface(vm_calls_t *callbacks);
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public:
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// Load and initialize everything except sockets.
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static jint initialize();
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// Socket library needs to be lazy intialized because eagerly
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// loading Winsock is known to cause "connect to your ISP"
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// dialog to show up. Or so goes the legend.
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static jint initialize_socket_library();
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// HPI_FileInterface
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static inline char* native_path(char *path);
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static inline int file_type(const char *path);
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static inline int open(const char *name, int mode, int perm);
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static inline int close(int fd);
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static inline jlong lseek(int fd, jlong off, int whence);
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static inline int ftruncate(int fd, jlong length);
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static inline int fsync(int fd);
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static inline int available(int fd, jlong *bytes);
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static inline size_t read(int fd, void *buf, unsigned int nBytes);
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static inline size_t write(int fd, const void *buf, unsigned int nBytes);
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static inline int fsize(int fd, jlong *size);
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// HPI_SocketInterface
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static inline int socket(int domain, int type, int protocol);
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static inline int socket_close(int fd);
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static inline int socket_shutdown(int fd, int howto);
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static inline int recv(int fd, char *buf, int nBytes, int flags);
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static inline int send(int fd, char *buf, int nBytes, int flags);
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static inline int timeout(int fd, long timeout);
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static inline int listen(int fd, int count);
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static inline int connect(int fd, struct sockaddr *him, int len);
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static inline int bind(int fd, struct sockaddr *him, int len);
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static inline int accept(int fd, struct sockaddr *him, int *len);
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static inline int recvfrom(int fd, char *buf, int nbytes, int flags,
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struct sockaddr *from, int *fromlen);
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static inline int get_sock_name(int fd, struct sockaddr *him, int *len);
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static inline int sendto(int fd, char *buf, int len, int flags,
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struct sockaddr *to, int tolen);
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static inline int socket_available(int fd, jint *pbytes);
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static inline int get_sock_opt(int fd, int level, int optname,
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char *optval, int* optlen);
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static inline int set_sock_opt(int fd, int level, int optname,
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const char *optval, int optlen);
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static inline int get_host_name(char* name, int namelen);
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static inline struct hostent* get_host_by_addr(const char* name, int len, int type);
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static inline struct hostent* get_host_by_name(char* name);
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static inline struct protoent* get_proto_by_name(char* name);
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// HPI_LibraryInterface
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static inline void dll_build_name(char *buf, int buf_len, char* path,
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const char *name);
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static inline void* dll_load(const char *name, char *ebuf, int ebuflen);
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static inline void dll_unload(void *lib);
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static inline void* dll_lookup(void *lib, const char *name);
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// HPI_SystemInterface
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static inline int lasterror(char *buf, int len);
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};
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//
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// Macros that provide inline bodies for the functions.
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//
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#define HPIDECL(name, names, intf, func, ret_type, ret_fmt, arg_type, arg_print, arg) \
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inline ret_type hpi::name arg_type { \
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if (TraceHPI) { \
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tty->print("hpi::" names "("); \
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tty->print arg_print ; \
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tty->print(") = "); \
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} \
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ret_type result = (*intf->func) arg ; \
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if (TraceHPI) { \
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tty->print_cr(ret_fmt, result); \
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} \
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return result; \
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}
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// Macro to facilitate moving HPI functionality into the vm.
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// See bug 6348631. The only difference between this macro and
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// HPIDECL is that we call a vm method rather than use the HPI
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// transfer vector. Ultimately, we'll replace HPIDECL with
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// VM_HPIDECL for all hpi methods.
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#define VM_HPIDECL(name, names, func, ret_type, ret_fmt, arg_type,arg_print, arg) \
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inline ret_type hpi::name arg_type { \
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if (TraceHPI) { \
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tty->print("hpi::" names "("); \
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tty->print arg_print ; \
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tty->print(") = "); \
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} \
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ret_type result = func arg ; \
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if (TraceHPI) { \
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tty->print_cr(ret_fmt, result); \
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} \
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return result; \
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}
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#define HPIDECL_VOID(name, names, intf, func, arg_type, arg_print, arg) \
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inline void hpi::name arg_type { \
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if (TraceHPI) { \
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tty->print("hpi::" names "("); \
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tty->print arg_print ; \
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tty->print_cr(") = void"); \
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} \
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(*intf->func) arg ; \
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}
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// The macro calls below realize into
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// inline char * hpi::native_path(...) { inlined_body; }
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// etc.
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// HPI_FileInterface
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HPIDECL(native_path, "native_path", _file, NativePath, char *, "%s",
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(char *path),
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("path = %s", path),
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(path));
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HPIDECL(file_type, "file_type", _file, FileType, int, "%d",
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(const char *path),
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("path = %s", path),
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(path));
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HPIDECL(open, "open", _file, Open, int, "%d",
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(const char *name, int mode, int perm),
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("name = %s, mode = %d, perm = %d", name, mode, perm),
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(name, mode, perm));
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HPIDECL(lseek, "seek", _file, Seek, jlong, "(a jlong)",
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(int fd, jlong off, int whence),
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("fd = %d, off = (a jlong), whence = %d", fd, /* off, */ whence),
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(fd, off, whence));
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HPIDECL(ftruncate, "ftruncate", _file, SetLength, int, "%d",
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(int fd, jlong length),
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("fd = %d, length = (a jlong)", fd /*, length */),
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(fd, length));
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HPIDECL(fsync, "fsync", _file, Sync, int, "%d",
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(int fd),
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("fd = %d", fd),
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(fd));
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HPIDECL(available, "available", _file, Available, int, "%d",
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(int fd, jlong *bytes),
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("fd = %d, bytes = %p", fd, bytes),
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(fd, bytes));
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HPIDECL(fsize, "fsize", _file, FileSizeFD, int, "%d",
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(int fd, jlong *size),
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("fd = %d, size = %p", fd, size),
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(fd, size));
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// HPI_LibraryInterface
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HPIDECL_VOID(dll_build_name, "dll_build_name", _library, BuildLibName,
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(char *buf, int buf_len, char *path, const char *name),
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("buf = %p, buflen = %d, path = %s, name = %s",
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buf, buf_len, path, name),
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(buf, buf_len, path, name));
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VM_HPIDECL(dll_load, "dll_load", os::dll_load,
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void *, "(void *)%p",
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(const char *name, char *ebuf, int ebuflen),
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("name = %s, ebuf = %p, ebuflen = %d", name, ebuf, ebuflen),
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(name, ebuf, ebuflen));
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HPIDECL_VOID(dll_unload, "dll_unload", _library, UnloadLibrary,
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(void *lib),
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("lib = %p", lib),
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(lib));
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HPIDECL(dll_lookup, "dll_lookup", _library, FindLibraryEntry, void *, "%p",
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(void *lib, const char *name),
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("lib = %p, name = %s", lib, name),
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(lib, name));
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// HPI_SystemInterface
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HPIDECL(lasterror, "lasterror", _system, GetLastErrorString, int, "%d",
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(char *buf, int len),
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("buf = %p, len = %d", buf, len),
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(buf, len));
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