1 /*
2 * Copyright (c) 1998, 2010, 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 #ifndef SHARE_VM_RUNTIME_HPI_HPP
26 #define SHARE_VM_RUNTIME_HPI_HPP
27
28 #include "prims/hpi_imported.h"
29 #include "runtime/os.hpp"
30 #include "utilities/globalDefinitions.hpp"
31 #include "utilities/top.hpp"
32
33 //
34 // C++ wrapper to HPI.
35 //
36
37 class hpi : AllStatic {
38
39 private:
40 static GetInterfaceFunc _get_interface;
41 static HPI_FileInterface* _file;
42 static HPI_SocketInterface* _socket;
43 static HPI_LibraryInterface* _library;
44 static HPI_SystemInterface* _system;
45
46 private:
47 static void initialize_get_interface(vm_calls_t *callbacks);
48
49 public:
50 // Load and initialize everything except sockets.
51 static jint initialize();
52
53 // Socket library needs to be lazy intialized because eagerly
54 // loading Winsock is known to cause "connect to your ISP"
55 // dialog to show up. Or so goes the legend.
56 static jint initialize_socket_library();
57
58 // HPI_FileInterface
59 static inline char* native_path(char *path);
60 static inline int file_type(const char *path);
61 static inline int open(const char *name, int mode, int perm);
62 static inline int close(int fd);
63 static inline jlong lseek(int fd, jlong off, int whence);
64 static inline int ftruncate(int fd, jlong length);
65 static inline int fsync(int fd);
66 static inline int available(int fd, jlong *bytes);
67 static inline size_t read(int fd, void *buf, unsigned int nBytes);
68 static inline size_t write(int fd, const void *buf, unsigned int nBytes);
69 static inline int fsize(int fd, jlong *size);
70
71 // HPI_SocketInterface
72 static inline int socket(int domain, int type, int protocol);
73 static inline int socket_close(int fd);
74 static inline int socket_shutdown(int fd, int howto);
75 static inline int recv(int fd, char *buf, int nBytes, int flags);
76 static inline int send(int fd, char *buf, int nBytes, int flags);
77 // Variant of send that doesn't support interruptible I/O
78 static inline int raw_send(int fd, char *buf, int nBytes, int flags);
79 static inline int timeout(int fd, long timeout);
80 static inline int listen(int fd, int count);
81 static inline int connect(int fd, struct sockaddr *him, int len);
82 static inline int bind(int fd, struct sockaddr *him, int len);
83 static inline int accept(int fd, struct sockaddr *him, int *len);
84 static inline int recvfrom(int fd, char *buf, int nbytes, int flags,
85 struct sockaddr *from, int *fromlen);
86 static inline int get_sock_name(int fd, struct sockaddr *him, int *len);
87 static inline int sendto(int fd, char *buf, int len, int flags,
88 struct sockaddr *to, int tolen);
89 static inline int socket_available(int fd, jint *pbytes);
90
91 static inline int get_sock_opt(int fd, int level, int optname,
92 char *optval, int* optlen);
93 static inline int set_sock_opt(int fd, int level, int optname,
94 const char *optval, int optlen);
95 static inline int get_host_name(char* name, int namelen);
96 static inline struct hostent* get_host_by_addr(const char* name, int len, int type);
97 static inline struct hostent* get_host_by_name(char* name);
98 static inline struct protoent* get_proto_by_name(char* name);
99
100 // HPI_LibraryInterface
101 static inline void dll_build_name(char *buf, int buf_len, const char* path,
102 const char *name);
103 static inline void* dll_load(const char *name, char *ebuf, int ebuflen);
104 static inline void dll_unload(void *lib);
105 static inline void* dll_lookup(void *lib, const char *name);
106
107 // HPI_SystemInterface
108 static inline int lasterror(char *buf, int len);
109 };
110
111 //
112 // Macros that provide inline bodies for the functions.
113 //
114
115 #define HPIDECL(name, names, intf, func, ret_type, ret_fmt, arg_type, arg_print, arg) \
116 inline ret_type hpi::name arg_type { \
117 if (TraceHPI) { \
118 tty->print("hpi::" names "("); \
119 tty->print arg_print ; \
120 tty->print(") = "); \
121 } \
122 ret_type result = (*intf->func) arg ; \
123 if (TraceHPI) { \
124 tty->print_cr(ret_fmt, result); \
125 } \
126 return result; \
127 }
128
129 // Macro to facilitate moving HPI functionality into the vm.
130 // See bug 6348631. The only difference between this macro and
131 // HPIDECL is that we call a vm method rather than use the HPI
132 // transfer vector. Ultimately, we'll replace HPIDECL with
133 // VM_HPIDECL for all hpi methods.
134 #define VM_HPIDECL(name, names, func, ret_type, ret_fmt, arg_type,arg_print, arg) \
135 inline ret_type hpi::name arg_type { \
136 if (TraceHPI) { \
137 tty->print("hpi::" names "("); \
138 tty->print arg_print ; \
139 tty->print(") = "); \
140 } \
141 ret_type result = func arg ; \
142 if (TraceHPI) { \
143 tty->print_cr(ret_fmt, result); \
144 } \
145 return result; \
146 }
147
148 #define VM_HPIDECL_VOID(name, names, func, arg_type, arg_print, arg) \
149 inline void hpi::name arg_type { \
150 if (TraceHPI) { \
151 tty->print("hpi::" names "("); \
152 tty->print arg_print; \
153 tty->print(") = "); \
154 } \
155 func arg; \
156 }
157
158 #define HPIDECL_VOID(name, names, intf, func, arg_type, arg_print, arg) \
159 inline void hpi::name arg_type { \
160 if (TraceHPI) { \
161 tty->print("hpi::" names "("); \
162 tty->print arg_print ; \
163 tty->print_cr(") = void"); \
164 } \
165 (*intf->func) arg ; \
166 }
167
168
169 // The macro calls below realize into
170 // inline char * hpi::native_path(...) { inlined_body; }
171 // etc.
172
173 // HPI_FileInterface
174
175 HPIDECL(native_path, "native_path", _file, NativePath, char *, "%s",
176 (char *path),
177 ("path = %s", path),
178 (path));
179
180 HPIDECL(file_type, "file_type", _file, FileType, int, "%d",
181 (const char *path),
182 ("path = %s", path),
183 (path));
184
185 HPIDECL(open, "open", _file, Open, int, "%d",
186 (const char *name, int mode, int perm),
187 ("name = %s, mode = %d, perm = %d", name, mode, perm),
188 (name, mode, perm));
189
190 HPIDECL(lseek, "seek", _file, Seek, jlong, "(a jlong)",
191 (int fd, jlong off, int whence),
192 ("fd = %d, off = (a jlong), whence = %d", fd, /* off, */ whence),
193 (fd, off, whence));
194
195 HPIDECL(ftruncate, "ftruncate", _file, SetLength, int, "%d",
196 (int fd, jlong length),
197 ("fd = %d, length = (a jlong)", fd /*, length */),
198 (fd, length));
199
200 HPIDECL(fsync, "fsync", _file, Sync, int, "%d",
201 (int fd),
202 ("fd = %d", fd),
203 (fd));
204
205 HPIDECL(available, "available", _file, Available, int, "%d",
206 (int fd, jlong *bytes),
207 ("fd = %d, bytes = %p", fd, bytes),
208 (fd, bytes));
209
210 HPIDECL(fsize, "fsize", _file, FileSizeFD, int, "%d",
211 (int fd, jlong *size),
212 ("fd = %d, size = %p", fd, size),
213 (fd, size));
214
215 // HPI_LibraryInterface
216 VM_HPIDECL_VOID(dll_build_name, "dll_build_name", os::dll_build_name,
217 (char *buf, int buf_len, const char *path, const char *name),
218 ("buf = %p, buflen = %d, path = %s, name = %s",
219 buf, buf_len, path, name),
220 (buf, buf_len, path, name));
221
222 VM_HPIDECL(dll_load, "dll_load", os::dll_load,
223 void *, "(void *)%p",
224 (const char *name, char *ebuf, int ebuflen),
225 ("name = %s, ebuf = %p, ebuflen = %d", name, ebuf, ebuflen),
226 (name, ebuf, ebuflen));
227
228 HPIDECL_VOID(dll_unload, "dll_unload", _library, UnloadLibrary,
229 (void *lib),
230 ("lib = %p", lib),
231 (lib));
232
233 HPIDECL(dll_lookup, "dll_lookup", _library, FindLibraryEntry, void *, "%p",
234 (void *lib, const char *name),
235 ("lib = %p, name = %s", lib, name),
236 (lib, name));
237
238 // HPI_SystemInterface
239 HPIDECL(lasterror, "lasterror", _system, GetLastErrorString, int, "%d",
240 (char *buf, int len),
241 ("buf = %p, len = %d", buf, len),
242 (buf, len));
243
244 #endif // SHARE_VM_RUNTIME_HPI_HPP