src/os/aix/vm/os_aix.cpp

rev 7454 : 8067015: Implement os::pd_map_memory() on AIX

*** 4142,4153 ****
  
  // Map a block of memory.
  char* os::pd_map_memory(int fd, const char* file_name, size_t file_offset,
                          char *addr, size_t bytes, bool read_only,
                          bool allow_exec) {
!   Unimplemented();
    return NULL;
  }
  
  
  // Remap a block of memory.
  char* os::pd_remap_memory(int fd, const char* file_name, size_t file_offset,
--- 4142,4174 ----
  
  // Map a block of memory.
  char* os::pd_map_memory(int fd, const char* file_name, size_t file_offset,
                          char *addr, size_t bytes, bool read_only,
                          bool allow_exec) {
!   int prot;
!   int flags = MAP_PRIVATE;
! 
!   if (read_only) {
!     prot = PROT_READ;
!   } else {
!     prot = PROT_READ | PROT_WRITE;
!   }
! 
!   if (allow_exec) {
!     prot |= PROT_EXEC;
!   }
! 
!   if (addr != NULL) {
!     flags |= MAP_FIXED;
!   }
! 
!   char* mapped_address = (char*)mmap(addr, (size_t)bytes, prot, flags,
!                                      fd, file_offset);
!   if (mapped_address == MAP_FAILED) {
      return NULL;
+   }
+   return mapped_address;
  }
  
  
  // Remap a block of memory.
  char* os::pd_remap_memory(int fd, const char* file_name, size_t file_offset,