1 /*
2 * Copyright (c) 1998, 2009, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 //
26 // C++ wrapper to HPI.
27 //
28
29 class hpi : AllStatic {
30
31 private:
32 static GetInterfaceFunc _get_interface;
33 static HPI_FileInterface* _file;
34 static HPI_SocketInterface* _socket;
35 static HPI_LibraryInterface* _library;
36 static HPI_SystemInterface* _system;
37
38 private:
39 static void initialize_get_interface(vm_calls_t *callbacks);
40
41 public:
42 // Load and initialize everything except sockets.
43 static jint initialize();
44
45 // Socket library needs to be lazy intialized because eagerly
46 // loading Winsock is known to cause "connect to your ISP"
47 // dialog to show up. Or so goes the legend.
48 static jint initialize_socket_library();
49
50 // HPI_FileInterface
51 static inline char* native_path(char *path);
52 static inline int file_type(const char *path);
53 static inline int open(const char *name, int mode, int perm);
54 static inline int close(int fd);
55 static inline jlong lseek(int fd, jlong off, int whence);
56 static inline int ftruncate(int fd, jlong length);
57 static inline int fsync(int fd);
58 static inline int available(int fd, jlong *bytes);
59 static inline size_t read(int fd, void *buf, unsigned int nBytes);
60 static inline size_t write(int fd, const void *buf, unsigned int nBytes);
61 static inline int fsize(int fd, jlong *size);
62
63 // HPI_SocketInterface
64 static inline int socket(int domain, int type, int protocol);
65 static inline int socket_close(int fd);
66 static inline int socket_shutdown(int fd, int howto);
67 static inline int recv(int fd, char *buf, int nBytes, int flags);
68 static inline int send(int fd, char *buf, int nBytes, int flags);
69 // Variant of send that doesn't support interruptible I/O
70 static inline int raw_send(int fd, char *buf, int nBytes, int flags);
71 static inline int timeout(int fd, long timeout);
72 static inline int listen(int fd, int count);
73 static inline int connect(int fd, struct sockaddr *him, int len);
74 static inline int bind(int fd, struct sockaddr *him, int len);
75 static inline int accept(int fd, struct sockaddr *him, int *len);
76 static inline int recvfrom(int fd, char *buf, int nbytes, int flags,
77 struct sockaddr *from, int *fromlen);
78 static inline int get_sock_name(int fd, struct sockaddr *him, int *len);
79 static inline int sendto(int fd, char *buf, int len, int flags,
80 struct sockaddr *to, int tolen);
81 static inline int socket_available(int fd, jint *pbytes);
82
83 static inline int get_sock_opt(int fd, int level, int optname,
84 char *optval, int* optlen);
85 static inline int set_sock_opt(int fd, int level, int optname,
86 const char *optval, int optlen);
87 static inline int get_host_name(char* name, int namelen);
88 static inline struct hostent* get_host_by_addr(const char* name, int len, int type);
89 static inline struct hostent* get_host_by_name(char* name);
90 static inline struct protoent* get_proto_by_name(char* name);
91
92 // HPI_LibraryInterface
93 static inline void dll_build_name(char *buf, int buf_len, const char* path,
94 const char *name);
95 static inline void* dll_load(const char *name, char *ebuf, int ebuflen);
96 static inline void dll_unload(void *lib);
97 static inline void* dll_lookup(void *lib, const char *name);
98
99 // HPI_SystemInterface
100 static inline int lasterror(char *buf, int len);
101 };
102
103 //
104 // Macros that provide inline bodies for the functions.
105 //
106
107 #define HPIDECL(name, names, intf, func, ret_type, ret_fmt, arg_type, arg_print, arg) \
108 inline ret_type hpi::name arg_type { \
109 if (TraceHPI) { \
110 tty->print("hpi::" names "("); \
111 tty->print arg_print ; \
112 tty->print(") = "); \
113 } \
114 ret_type result = (*intf->func) arg ; \
115 if (TraceHPI) { \
116 tty->print_cr(ret_fmt, result); \
117 } \
118 return result; \
119 }
120
121 // Macro to facilitate moving HPI functionality into the vm.
122 // See bug 6348631. The only difference between this macro and
123 // HPIDECL is that we call a vm method rather than use the HPI
124 // transfer vector. Ultimately, we'll replace HPIDECL with
125 // VM_HPIDECL for all hpi methods.
126 #define VM_HPIDECL(name, names, func, ret_type, ret_fmt, arg_type,arg_print, arg) \
127 inline ret_type hpi::name arg_type { \
128 if (TraceHPI) { \
129 tty->print("hpi::" names "("); \
130 tty->print arg_print ; \
131 tty->print(") = "); \
132 } \
133 ret_type result = func arg ; \
134 if (TraceHPI) { \
135 tty->print_cr(ret_fmt, result); \
136 } \
137 return result; \
138 }
139
140 #define VM_HPIDECL_VOID(name, names, func, arg_type, arg_print, arg) \
141 inline void hpi::name arg_type { \
142 if (TraceHPI) { \
143 tty->print("hpi::" names "("); \
144 tty->print arg_print; \
145 tty->print(") = "); \
146 } \
147 func arg; \
148 }
149
150 #define HPIDECL_VOID(name, names, intf, func, arg_type, arg_print, arg) \
151 inline void hpi::name arg_type { \
152 if (TraceHPI) { \
153 tty->print("hpi::" names "("); \
154 tty->print arg_print ; \
155 tty->print_cr(") = void"); \
156 } \
157 (*intf->func) arg ; \
158 }
159
160
161 // The macro calls below realize into
162 // inline char * hpi::native_path(...) { inlined_body; }
163 // etc.
164
165 // HPI_FileInterface
166
167 HPIDECL(native_path, "native_path", _file, NativePath, char *, "%s",
168 (char *path),
169 ("path = %s", path),
170 (path));
171
172 HPIDECL(file_type, "file_type", _file, FileType, int, "%d",
173 (const char *path),
174 ("path = %s", path),
175 (path));
176
177 HPIDECL(open, "open", _file, Open, int, "%d",
178 (const char *name, int mode, int perm),
179 ("name = %s, mode = %d, perm = %d", name, mode, perm),
180 (name, mode, perm));
181
182 HPIDECL(lseek, "seek", _file, Seek, jlong, "(a jlong)",
183 (int fd, jlong off, int whence),
184 ("fd = %d, off = (a jlong), whence = %d", fd, /* off, */ whence),
185 (fd, off, whence));
186
187 HPIDECL(ftruncate, "ftruncate", _file, SetLength, int, "%d",
188 (int fd, jlong length),
189 ("fd = %d, length = (a jlong)", fd /*, length */),
190 (fd, length));
191
192 HPIDECL(fsync, "fsync", _file, Sync, int, "%d",
193 (int fd),
194 ("fd = %d", fd),
195 (fd));
196
197 HPIDECL(available, "available", _file, Available, int, "%d",
198 (int fd, jlong *bytes),
199 ("fd = %d, bytes = %p", fd, bytes),
200 (fd, bytes));
201
202 HPIDECL(fsize, "fsize", _file, FileSizeFD, int, "%d",
203 (int fd, jlong *size),
204 ("fd = %d, size = %p", fd, size),
205 (fd, size));
206
207 // HPI_LibraryInterface
208 VM_HPIDECL_VOID(dll_build_name, "dll_build_name", os::dll_build_name,
209 (char *buf, int buf_len, const char *path, const char *name),
210 ("buf = %p, buflen = %d, path = %s, name = %s",
211 buf, buf_len, path, name),
212 (buf, buf_len, path, name));
213
214 VM_HPIDECL(dll_load, "dll_load", os::dll_load,
215 void *, "(void *)%p",
216 (const char *name, char *ebuf, int ebuflen),
217 ("name = %s, ebuf = %p, ebuflen = %d", name, ebuf, ebuflen),
218 (name, ebuf, ebuflen));
219
220 HPIDECL_VOID(dll_unload, "dll_unload", _library, UnloadLibrary,
221 (void *lib),
222 ("lib = %p", lib),
223 (lib));
224
225 HPIDECL(dll_lookup, "dll_lookup", _library, FindLibraryEntry, void *, "%p",
226 (void *lib, const char *name),
227 ("lib = %p, name = %s", lib, name),
228 (lib, name));
229
230 // HPI_SystemInterface
231 HPIDECL(lasterror, "lasterror", _system, GetLastErrorString, int, "%d",
232 (char *buf, int len),
233 ("buf = %p, len = %d", buf, len),
234 (buf, len));