classlib/modules/luni/src/main/native/launcher/shared/cmain.c

/*
 *  Licensed to the Apache Software Foundation (ASF) under one or more
 *  contributor license agreements.  See the NOTICE file distributed with
 *  this work for additional information regarding copyright ownership.
 *  The ASF licenses this file to You under the Apache License, Version 2.0
 *  (the "License"); you may not use this file except in compliance with
 *  the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */

#include "hycomp.h"
#include "hyport.h"

#ifdef HY_NO_THR
#include "main_hlp.h"
#if defined(ZOS)
/* Need ascii2ebcdic functions on zOS */
#include "atoe.h"
#endif
#endif /* HY_NO_THR */

#include <stdlib.h>             /* for malloc for atoe and abort */
#include <stdio.h>



struct haCmdlineOptions
{
  int argc;
  char **argv;
  char **envp;
  HyPortLibrary *portLibrary;
};
extern UDATA VMCALL gpProtectedMain (void *arg);
#ifdef HY_NO_THR
extern int main_addVMDirToPath(int argc, char **argv, char **envp); 
#endif /* HY_NO_THR */

#ifdef HY_NO_THR
typedef I_32 (PVMCALL hyport_init_library_type) (struct HyPortLibrary *portLibrary,
		struct HyPortLibraryVersion *version, 
		UDATA size);

#endif /* HY_NO_THR */
int
main (int argc, char **argv, char **envp)
{
  HyPortLibrary hyportLibrary;
  HyPortLibraryVersion portLibraryVersion;
  struct haCmdlineOptions options;
  int rc = 257;
#ifdef HY_NO_THR
  UDATA portLibDescriptor;
  hyport_init_library_type port_init_library_func;

#if defined(ZOS)
  /* Initialise the ascii2ebcdic functions before doing anything else */
  rc = iconv_init();
  if (0 != rc) {
#pragma convlit(suspend)
      fprintf(stderr, "Failed to initialise atoe library\n");
#pragma convlit(resume)
      return rc;
  }

  /* Convert our command line options into ASCII - this function is
     part of the hya2e library */
  ConvertArgstoASCII(argc, argv);
#endif

  /* determine which VM directory to use and add it to the path */
  rc = main_addVMDirToPath(argc, argv, envp);
  if ( 0 != rc ) {
	  return rc;
  }

  if ( 0 != main_open_port_library(&portLibDescriptor) ) {
	  fprintf( stderr, "failed to open hyprt library.\n" );
	  return -1;
  }
  if ( 0 != main_lookup_name( portLibDescriptor, "hyport_init_library", (UDATA *)&port_init_library_func) ) {
	  fprintf( stderr, "failed to find hyport_init_library function in hyprt library\n" );
	  return -1;
  }
#endif /* HY_NO_THR */
  /* Use portlibrary version which we compiled against, and have allocated space
   * for on the stack.  This version may be different from the one in the linked DLL.
   */
  HYPORT_SET_VERSION (&portLibraryVersion, HYPORT_CAPABILITY_MASK);
  rc =
#ifndef HY_NO_THR
      hyport_init_library (&hyportLibrary, &portLibraryVersion,
#else /* HY_NO_THR */
	  port_init_library_func (&hyportLibrary, &portLibraryVersion,
#endif /* HY_NO_THR */
                                  sizeof (HyPortLibrary));
   if (rc == 0)
    {
      options.argc = argc;
      options.argv = argv;
      options.envp = envp;
      options.portLibrary = &hyportLibrary;

      rc = gpProtectedMain (&options);
      hyportLibrary.port_shutdown_library (&hyportLibrary);
    } else {
        fprintf( stderr,
                 "hyport_init_library function failed in hyprt library\n" );
    }

  return rc;
}