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/options.h"
  42 #include "vm/os.hpp"
  43 #include "vm/properties.h"
  44 #include "vm/utf8.h"
  45 #include "vm/vm.hpp"
  46
  47
  48 /* VM callback functions ******************************************************/
  49
  50 static vm_calls_t callbacks = {
  51         /* TODO What should we use here? */
  52 /*   jio_fprintf, */
  53 /*   unimplemented_panic, */
  54 /*   unimplemented_monitorRegister, */
  55         NULL,
  56         NULL,
  57         NULL,
  58
  59         NULL, /* unused */
  60         NULL, /* unused */
  61         NULL  /* unused */
  62 };
  63
  64
  65 /* HPI interfaces *************************************************************/
  66
  67 GetInterfaceFunc      hpi_get_interface = NULL;
  68 HPI_FileInterface    *hpi_file          = NULL;
  69 HPI_SocketInterface  *hpi_socket        = NULL;
  70 HPI_LibraryInterface *hpi_library       = NULL;
  71 HPI_SystemInterface  *hpi_system        = NULL;
  72
  73
  74 /* hpi_initialize **************************************************************
  75
  76    Initialize the Host Porting Interface (HPI).
  77
  78 *******************************************************************************/
  79
  80 void hpi_initialize(void)
  81 {
  82         const char* boot_library_path;
  83         int   len;
  84         char* p;
  85         utf*  u;
  86         void* handle;
  87         void* dll_initialize;
  88         int   result;
  89
  90     jint (JNICALL * DLL_Initialize)(GetInterfaceFunc *, void *);
  91
  92         TRACESUBSYSTEMINITIALIZATION("hpi_init");
  93
  94         /* Load libhpi.so */
  95
  96         boot_library_path = properties_get("sun.boot.library.path");
  97
  98         len =
  99                 os_strlen(boot_library_path) +
 100                 os_strlen("/native_threads/libhpi.so") +
 101                 os_strlen("0");
 102
 103         p = MNEW(char, len);
 104
 105         os_strcpy(p, boot_library_path);
 106         os_strcat(p, "/native_threads/libhpi.so");
 107
 108         u = utf_new_char(p);
 109
 110     if (opt_TraceHPI)
 111                 log_println("hpi_init: Loading HPI %s ", p);
 112
 113         MFREE(p, char, len);
 114
 115         handle = native_library_open(u);
 116
 117         if (handle == NULL)
 118                 if (opt_TraceHPI)
 119                         vm_abort("hpi_init: HPI open failed");
 120
 121         /* Resolve the DLL_Initialize function from the library. */
 122
 123         dll_initialize = os_dlsym(handle, "DLL_Initialize");
 124
 125     DLL_Initialize = (jint (JNICALL *)(GetInterfaceFunc *, void *)) (intptr_t) dll_initialize;
 126
 127     if (opt_TraceHPI && DLL_Initialize == NULL)
 128                 log_println("hpi_init: HPI dlsym of DLL_Initialize failed: %s", os_dlerror());
 129
 130     if (DLL_Initialize == NULL ||
 131         (*DLL_Initialize)(&hpi_get_interface, &callbacks) < 0) {
 132
 133         if (opt_TraceHPI)
 134                         vm_abort("hpi_init: HPI DLL_Initialize failed");
 135     }
 136
 137         native_library_add(u, NULL, handle);
 138
 139     if (opt_TraceHPI)
 140                 log_println("hpi_init: HPI loaded successfully");
 141
 142         /* Resolve the interfaces. */
 143         /* NOTE: The intptr_t-case is only to prevent the a compiler
 144            warning with -O2: warning: dereferencing type-punned pointer
 145            will break strict-aliasing rules */
 146
 147         result = (*hpi_get_interface)((void **) (intptr_t) &hpi_file, "File", 1);
 148
 149         if (result != 0)
 150                 vm_abort("hpi_init: Can't find HPI_FileInterface");
 151
 152         result = (*hpi_get_interface)((void **) (intptr_t) &hpi_library, "Library", 1);
 153
 154         if (result != 0)
 155                 vm_abort("hpi_init: Can't find HPI_LibraryInterface");
 156
 157         result = (*hpi_get_interface)((void **) (intptr_t) &hpi_system, "System", 1);
 158
 159         if (result != 0)
 160                 vm_abort("hpi_init: Can't find HPI_SystemInterface");
 161 }
 162
 163
 164 /* hpi_initialize_socket_library ***********************************************
 165
 166    Initialize the library Host Porting Interface (HPI).
 167
 168 *******************************************************************************/
 169
 170 int hpi_initialize_socket_library(void)
 171 {
 172         int result;
 173
 174         /* Resolve the socket library interface. */
 175
 176         result = (*hpi_get_interface)((void **) (intptr_t) &hpi_socket, "Socket", 1);
 177
 178         if (result != 0) {
 179                 if (opt_TraceHPI)
 180                         log_println("hpi_initialize_socket_library: Can't find HPI_SocketInterface");
 181
 182                 return JNI_ERR;
 183         }
 184
 185         return JNI_OK;
 186 }
 187
 188
 189 /*
 190  * These are local overrides for various environment variables in Emacs.
 191  * Please do not remove this and leave it at the end of the file, where
 192  * Emacs will automagically detect them.
 193  * ---------------------------------------------------------------------
 194  * Local variables:
 195  * mode: c
 196  * indent-tabs-mode: t
 197  * c-basic-offset: 4
 198  * tab-width: 4
 199  * End:
 200  * vim:noexpandtab:sw=4:ts=4:
 201  */