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/os.hpp"
  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                 os_strlen(boot_library_path) +
 101                 os_strlen("/native_threads/libhpi.so") +
 102                 os_strlen("0");
 103
 104         p = MNEW(char, len);
 105
 106         os_strcpy(p, boot_library_path);
 107         os_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 = os_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", os_dlerror());
 130
 131     if (DLL_Initialize == NULL ||
 132         (*DLL_Initialize)(&hpi_get_interface, &callbacks) < 0) {
 133
 134         if (opt_TraceHPI)
 135                         vm_abort("hpi_init: HPI DLL_Initialize failed");
 136     }
 137
 138         native_library_add(u, NULL, handle);
 139
 140     if (opt_TraceHPI)
 141                 log_println("hpi_init: HPI loaded successfully");
 142
 143         /* Resolve the interfaces. */
 144         /* NOTE: The intptr_t-case is only to prevent the a compiler
 145            warning with -O2: warning: dereferencing type-punned pointer
 146            will break strict-aliasing rules */
 147
 148         result = (*hpi_get_interface)((void **) (intptr_t) &hpi_file, "File", 1);
 149
 150         if (result != 0)
 151                 vm_abort("hpi_init: Can't find HPI_FileInterface");
 152
 153         result = (*hpi_get_interface)((void **) (intptr_t) &hpi_library, "Library", 1);
 154
 155         if (result != 0)
 156                 vm_abort("hpi_init: Can't find HPI_LibraryInterface");
 157
 158         result = (*hpi_get_interface)((void **) (intptr_t) &hpi_system, "System", 1);
 159
 160         if (result != 0)
 161                 vm_abort("hpi_init: Can't find HPI_SystemInterface");
 162 }
 163
 164
 165 /* hpi_initialize_socket_library ***********************************************
 166
 167    Initialize the library Host Porting Interface (HPI).
 168
 169 *******************************************************************************/
 170
 171 int hpi_initialize_socket_library(void)
 172 {
 173         int result;
 174
 175         /* Resolve the socket library interface. */
 176
 177         result = (*hpi_get_interface)((void **) (intptr_t) &hpi_socket, "Socket", 1);
 178
 179         if (result != 0) {
 180                 if (opt_TraceHPI)
 181                         log_println("hpi_initialize_socket_library: Can't find HPI_SocketInterface");
 182
 183                 return JNI_ERR;
 184         }
 185
 186         return JNI_OK;
 187 }
 188
 189
 190 /*
 191  * These are local overrides for various environment variables in Emacs.
 192  * Please do not remove this and leave it at the end of the file, where
 193  * Emacs will automagically detect them.
 194  * ---------------------------------------------------------------------
 195  * Local variables:
 196  * mode: c
 197  * indent-tabs-mode: t
 198  * c-basic-offset: 4
 199  * tab-width: 4
 200  * End:
 201  * vim:noexpandtab:sw=4:ts=4:
 202  */