src/native/vm/openjdk/hpi.c

   1 /* src/native/vm/openjdk/hpi.c - HotSpot HPI interface functions
   2
   3    Copyright (C) 2008
   4    CACAOVM - Verein zur Foerderung der freien virtuellen Maschine CACAO
   5
   6    This file is part of CACAO.
   7
   8    This program is free software; you can redistribute it and/or
   9    modify it under the terms of the GNU General Public License as
  10    published by the Free Software Foundation; either version 2, or (at
  11    your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful, but
  14    WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16    General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program; if not, write to the Free Software
  20    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  21    02110-1301, USA.
  22
  23 */
  24
  25
  26 #include "config.h"
  27
  28 /* We include hpi_md.h before hpi.h as the latter includes the
  29    former. */
  30
  31 #include INCLUDE_HPI_MD_H
  32 #include INCLUDE_HPI_H
  33
  34 #include "mm/memory.h"
  35
  36 #include "native/jni.h"
  37 #include "native/native.h"
  38
  39 #include "native/vm/openjdk/hpi.h"
  40
  41 #include "vm/properties.h"
  42 #include "vm/vm.hpp"
  43
  44 #include "vmcore/options.h"
  45 #include "vmcore/system.h"
  46 #include "vmcore/utf8.h"
  47
  48
  49 /* VM callback functions ******************************************************/
  50
  51 static vm_calls_t callbacks = {
  52         /* TODO What should we use here? */
  53 /*   jio_fprintf, */
  54 /*   unimplemented_panic, */
  55 /*   unimplemented_monitorRegister, */
  56         NULL,
  57         NULL,
  58         NULL,
  59
  60         NULL, /* unused */
  61         NULL, /* unused */
  62         NULL  /* unused */
  63 };
  64
  65
  66 /* HPI interfaces *************************************************************/
  67
  68 GetInterfaceFunc      hpi_get_interface = NULL;
  69 HPI_FileInterface    *hpi_file          = NULL;
  70 HPI_SocketInterface  *hpi_socket        = NULL;
  71 HPI_LibraryInterface *hpi_library       = NULL;
  72 HPI_SystemInterface  *hpi_system        = NULL;
  73
  74
  75 /* hpi_initialize **************************************************************
  76
  77    Initialize the Host Porting Interface (HPI).
  78
  79 *******************************************************************************/
  80
  81 void hpi_initialize(void)
  82 {
  83         const char* boot_library_path;
  84         int   len;
  85         char* p;
  86         utf*  u;
  87         void* handle;
  88         void* dll_initialize;
  89         int   result;
  90
  91     jint (JNICALL * DLL_Initialize)(GetInterfaceFunc *, void *);
  92
  93         TRACESUBSYSTEMINITIALIZATION("hpi_init");
  94
  95         /* Load libhpi.so */
  96
  97         boot_library_path = properties_get("sun.boot.library.path");
  98
  99         len =
 100                 system_strlen(boot_library_path) +
 101                 system_strlen("/native_threads/libhpi.so") +
 102                 system_strlen("0");
 103
 104         p = MNEW(char, len);
 105
 106         system_strcpy(p, boot_library_path);
 107         system_strcat(p, "/native_threads/libhpi.so");
 108
 109         u = utf_new_char(p);
 110
 111     if (opt_TraceHPI)
 112                 log_println("hpi_init: Loading HPI %s ", p);
 113
 114         MFREE(p, char, len);
 115
 116         handle = native_library_open(u);
 117
 118         if (handle == NULL)
 119                 if (opt_TraceHPI)
 120                         vm_abort("hpi_init: HPI open failed");
 121
 122         /* Resolve the DLL_Initialize function from the library. */
 123
 124         dll_initialize = system_dlsym(handle, "DLL_Initialize");
 125
 126     DLL_Initialize = (jint (JNICALL *)(GetInterfaceFunc *, void *)) (intptr_t) dll_initialize;
 127
 128     if (opt_TraceHPI && DLL_Initialize == NULL)
 129                 log_println("hpi_init: HPI dlsym of DLL_Initialize failed: %s",
 130                                         system_dlerror());
 131
 132     if (DLL_Initialize == NULL ||
 133         (*DLL_Initialize)(&hpi_get_interface, &callbacks) < 0) {
 134
 135         if (opt_TraceHPI)
 136                         vm_abort("hpi_init: HPI DLL_Initialize failed");
 137     }
 138
 139         native_library_add(u, NULL, handle);
 140
 141     if (opt_TraceHPI)
 142                 log_println("hpi_init: HPI loaded successfully");
 143
 144         /* Resolve the interfaces. */
 145         /* NOTE: The intptr_t-case is only to prevent the a compiler
 146            warning with -O2: warning: dereferencing type-punned pointer
 147            will break strict-aliasing rules */
 148
 149         result = (*hpi_get_interface)((void **) (intptr_t) &hpi_file, "File", 1);
 150
 151         if (result != 0)
 152                 vm_abort("hpi_init: Can't find HPI_FileInterface");
 153
 154         result = (*hpi_get_interface)((void **) (intptr_t) &hpi_library, "Library", 1);
 155
 156         if (result != 0)
 157                 vm_abort("hpi_init: Can't find HPI_LibraryInterface");
 158
 159         result = (*hpi_get_interface)((void **) (intptr_t) &hpi_system, "System", 1);
 160
 161         if (result != 0)
 162                 vm_abort("hpi_init: Can't find HPI_SystemInterface");
 163 }
 164
 165
 166 /* hpi_initialize_socket_library ***********************************************
 167
 168    Initialize the library Host Porting Interface (HPI).
 169
 170 *******************************************************************************/
 171
 172 int hpi_initialize_socket_library(void)
 173 {
 174         int result;
 175
 176         /* Resolve the socket library interface. */
 177
 178         result = (*hpi_get_interface)((void **) (intptr_t) &hpi_socket, "Socket", 1);
 179
 180         if (result != 0) {
 181                 if (opt_TraceHPI)
 182                         log_println("hpi_initialize_socket_library: Can't find HPI_SocketInterface");
 183
 184                 return JNI_ERR;
 185         }
 186
 187         return JNI_OK;
 188 }
 189
 190
 191 /*
 192  * These are local overrides for various environment variables in Emacs.
 193  * Please do not remove this and leave it at the end of the file, where
 194  * Emacs will automagically detect them.
 195  * ---------------------------------------------------------------------
 196  * Local variables:
 197  * mode: c
 198  * indent-tabs-mode: t
 199  * c-basic-offset: 4
 200  * tab-width: 4
 201  * End:
 202  * vim:noexpandtab:sw=4:ts=4:
 203  */