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1 /*
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2 * Copyright 1998-2006 Sun Microsystems, Inc. All Rights Reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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20 * CA 95054 USA or visit www.sun.com if you need additional information or
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21 * have any questions.
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22 *
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23 */
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24
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25 //
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26 // C++ wrapper to HPI.
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27 //
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28
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29 class hpi : AllStatic {
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30
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31 private:
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32 static GetInterfaceFunc _get_interface;
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33 static HPI_FileInterface* _file;
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34 static HPI_SocketInterface* _socket;
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35 static HPI_LibraryInterface* _library;
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36 static HPI_SystemInterface* _system;
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37
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38 private:
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39 static void initialize_get_interface(vm_calls_t *callbacks);
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40
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41 public:
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42 // Load and initialize everything except sockets.
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43 static jint initialize();
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44
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45 // Socket library needs to be lazy intialized because eagerly
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46 // loading Winsock is known to cause "connect to your ISP"
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47 // dialog to show up. Or so goes the legend.
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48 static jint initialize_socket_library();
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49
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50 // HPI_FileInterface
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51 static inline char* native_path(char *path);
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52 static inline int file_type(const char *path);
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53 static inline int open(const char *name, int mode, int perm);
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54 static inline int close(int fd);
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55 static inline jlong lseek(int fd, jlong off, int whence);
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56 static inline int ftruncate(int fd, jlong length);
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57 static inline int fsync(int fd);
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58 static inline int available(int fd, jlong *bytes);
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59 static inline size_t read(int fd, void *buf, unsigned int nBytes);
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60 static inline size_t write(int fd, const void *buf, unsigned int nBytes);
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61 static inline int fsize(int fd, jlong *size);
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62
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63 // HPI_SocketInterface
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64 static inline int socket(int domain, int type, int protocol);
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65 static inline int socket_close(int fd);
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66 static inline int socket_shutdown(int fd, int howto);
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67 static inline int recv(int fd, char *buf, int nBytes, int flags);
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68 static inline int send(int fd, char *buf, int nBytes, int flags);
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69 static inline int timeout(int fd, long timeout);
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70 static inline int listen(int fd, int count);
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71 static inline int connect(int fd, struct sockaddr *him, int len);
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72 static inline int bind(int fd, struct sockaddr *him, int len);
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73 static inline int accept(int fd, struct sockaddr *him, int *len);
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74 static inline int recvfrom(int fd, char *buf, int nbytes, int flags,
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75 struct sockaddr *from, int *fromlen);
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76 static inline int get_sock_name(int fd, struct sockaddr *him, int *len);
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77 static inline int sendto(int fd, char *buf, int len, int flags,
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78 struct sockaddr *to, int tolen);
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79 static inline int socket_available(int fd, jint *pbytes);
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80
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81 static inline int get_sock_opt(int fd, int level, int optname,
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82 char *optval, int* optlen);
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83 static inline int set_sock_opt(int fd, int level, int optname,
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84 const char *optval, int optlen);
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85 static inline int get_host_name(char* name, int namelen);
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86 static inline struct hostent* get_host_by_addr(const char* name, int len, int type);
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87 static inline struct hostent* get_host_by_name(char* name);
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88 static inline struct protoent* get_proto_by_name(char* name);
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89
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90 // HPI_LibraryInterface
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91 static inline void dll_build_name(char *buf, int buf_len, char* path,
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92 const char *name);
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93 static inline void* dll_load(const char *name, char *ebuf, int ebuflen);
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94 static inline void dll_unload(void *lib);
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95 static inline void* dll_lookup(void *lib, const char *name);
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96
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97 // HPI_SystemInterface
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98 static inline int lasterror(char *buf, int len);
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99 };
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100
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101 //
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102 // Macros that provide inline bodies for the functions.
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103 //
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104
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105 #define HPIDECL(name, names, intf, func, ret_type, ret_fmt, arg_type, arg_print, arg) \
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106 inline ret_type hpi::name arg_type { \
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107 if (TraceHPI) { \
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108 tty->print("hpi::" names "("); \
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109 tty->print arg_print ; \
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110 tty->print(") = "); \
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111 } \
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112 ret_type result = (*intf->func) arg ; \
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113 if (TraceHPI) { \
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114 tty->print_cr(ret_fmt, result); \
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115 } \
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116 return result; \
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117 }
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118
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119 // Macro to facilitate moving HPI functionality into the vm.
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120 // See bug 6348631. The only difference between this macro and
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121 // HPIDECL is that we call a vm method rather than use the HPI
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122 // transfer vector. Ultimately, we'll replace HPIDECL with
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123 // VM_HPIDECL for all hpi methods.
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124 #define VM_HPIDECL(name, names, func, ret_type, ret_fmt, arg_type,arg_print, arg) \
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125 inline ret_type hpi::name arg_type { \
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126 if (TraceHPI) { \
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127 tty->print("hpi::" names "("); \
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128 tty->print arg_print ; \
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129 tty->print(") = "); \
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130 } \
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131 ret_type result = func arg ; \
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132 if (TraceHPI) { \
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133 tty->print_cr(ret_fmt, result); \
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134 } \
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135 return result; \
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136 }
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137
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138
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139
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140 #define HPIDECL_VOID(name, names, intf, func, arg_type, arg_print, arg) \
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141 inline void hpi::name arg_type { \
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142 if (TraceHPI) { \
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143 tty->print("hpi::" names "("); \
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144 tty->print arg_print ; \
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145 tty->print_cr(") = void"); \
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146 } \
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147 (*intf->func) arg ; \
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148 }
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149
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150
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151 // The macro calls below realize into
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152 // inline char * hpi::native_path(...) { inlined_body; }
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153 // etc.
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154
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155 // HPI_FileInterface
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156
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157 HPIDECL(native_path, "native_path", _file, NativePath, char *, "%s",
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158 (char *path),
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159 ("path = %s", path),
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160 (path));
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161
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162 HPIDECL(file_type, "file_type", _file, FileType, int, "%d",
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163 (const char *path),
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164 ("path = %s", path),
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165 (path));
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166
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167 HPIDECL(open, "open", _file, Open, int, "%d",
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168 (const char *name, int mode, int perm),
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169 ("name = %s, mode = %d, perm = %d", name, mode, perm),
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170 (name, mode, perm));
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171
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172 HPIDECL(lseek, "seek", _file, Seek, jlong, "(a jlong)",
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173 (int fd, jlong off, int whence),
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174 ("fd = %d, off = (a jlong), whence = %d", fd, /* off, */ whence),
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175 (fd, off, whence));
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176
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177 HPIDECL(ftruncate, "ftruncate", _file, SetLength, int, "%d",
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178 (int fd, jlong length),
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179 ("fd = %d, length = (a jlong)", fd /*, length */),
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180 (fd, length));
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181
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182 HPIDECL(fsync, "fsync", _file, Sync, int, "%d",
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183 (int fd),
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184 ("fd = %d", fd),
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185 (fd));
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186
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187 HPIDECL(available, "available", _file, Available, int, "%d",
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188 (int fd, jlong *bytes),
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189 ("fd = %d, bytes = %p", fd, bytes),
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190 (fd, bytes));
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191
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192 HPIDECL(fsize, "fsize", _file, FileSizeFD, int, "%d",
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193 (int fd, jlong *size),
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194 ("fd = %d, size = %p", fd, size),
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195 (fd, size));
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196
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197 // HPI_LibraryInterface
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198 HPIDECL_VOID(dll_build_name, "dll_build_name", _library, BuildLibName,
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199 (char *buf, int buf_len, char *path, const char *name),
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200 ("buf = %p, buflen = %d, path = %s, name = %s",
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201 buf, buf_len, path, name),
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202 (buf, buf_len, path, name));
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203
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204 VM_HPIDECL(dll_load, "dll_load", os::dll_load,
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205 void *, "(void *)%p",
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206 (const char *name, char *ebuf, int ebuflen),
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207 ("name = %s, ebuf = %p, ebuflen = %d", name, ebuf, ebuflen),
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208 (name, ebuf, ebuflen));
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209
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210 HPIDECL_VOID(dll_unload, "dll_unload", _library, UnloadLibrary,
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211 (void *lib),
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212 ("lib = %p", lib),
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213 (lib));
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214
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215 HPIDECL(dll_lookup, "dll_lookup", _library, FindLibraryEntry, void *, "%p",
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216 (void *lib, const char *name),
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217 ("lib = %p, name = %s", lib, name),
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218 (lib, name));
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219
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220 // HPI_SystemInterface
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221 HPIDECL(lasterror, "lasterror", _system, GetLastErrorString, int, "%d",
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222 (char *buf, int len),
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223 ("buf = %p, len = %d", buf, len),
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224 (buf, len));
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