rev 11647 : 8161258: Simplify including platform files.
Summary: Include patform files with macros cpu_header() etc. Do various cleanups of macro usages. Remove _64/_32 from adlc generated files and platform .hpp files. Merge stubRoutines_x86*.hpp. Remove empty mutex_<os>* files.
Reviewed-by: dholmes, coleenp, kbarrett

   1 /*
   2  * Copyright (c) 2003, 2016, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #ifndef SHARE_VM_UTILITIES_COPY_HPP
  26 #define SHARE_VM_UTILITIES_COPY_HPP
  27 
  28 #include "runtime/stubRoutines.hpp"
  29 #include "utilities/macros.hpp"
  30 
  31 // Assembly code for platforms that need it.
  32 extern "C" {
  33   void _Copy_conjoint_words(HeapWord* from, HeapWord* to, size_t count);
  34   void _Copy_disjoint_words(HeapWord* from, HeapWord* to, size_t count);
  35 
  36   void _Copy_conjoint_words_atomic(HeapWord* from, HeapWord* to, size_t count);
  37   void _Copy_disjoint_words_atomic(HeapWord* from, HeapWord* to, size_t count);
  38 
  39   void _Copy_aligned_conjoint_words(HeapWord* from, HeapWord* to, size_t count);
  40   void _Copy_aligned_disjoint_words(HeapWord* from, HeapWord* to, size_t count);
  41 
  42   void _Copy_conjoint_bytes(void* from, void* to, size_t count);
  43 
  44   void _Copy_conjoint_bytes_atomic  (void*   from, void*   to, size_t count);
  45   void _Copy_conjoint_jshorts_atomic(jshort* from, jshort* to, size_t count);
  46   void _Copy_conjoint_jints_atomic  (jint*   from, jint*   to, size_t count);
  47   void _Copy_conjoint_jlongs_atomic (jlong*  from, jlong*  to, size_t count);
  48   void _Copy_conjoint_oops_atomic   (oop*    from, oop*    to, size_t count);
  49 
  50   void _Copy_arrayof_conjoint_bytes  (HeapWord* from, HeapWord* to, size_t count);
  51   void _Copy_arrayof_conjoint_jshorts(HeapWord* from, HeapWord* to, size_t count);
  52   void _Copy_arrayof_conjoint_jints  (HeapWord* from, HeapWord* to, size_t count);
  53   void _Copy_arrayof_conjoint_jlongs (HeapWord* from, HeapWord* to, size_t count);
  54   void _Copy_arrayof_conjoint_oops   (HeapWord* from, HeapWord* to, size_t count);
  55 }
  56 
  57 class Copy : AllStatic {
  58  public:
  59   // Block copy methods have four attributes.  We don't define all possibilities.
  60   //   alignment: aligned to BytesPerLong
  61   //   arrayof:   arraycopy operation with both operands aligned on the same
  62   //              boundary as the first element of an array of the copy unit.
  63   //              This is currently a HeapWord boundary on all platforms, except
  64   //              for long and double arrays, which are aligned on an 8-byte
  65   //              boundary on all platforms.
  66   //              arraycopy operations are implicitly atomic on each array element.
  67   //   overlap:   disjoint or conjoint.
  68   //   copy unit: bytes or words (i.e., HeapWords) or oops (i.e., pointers).
  69   //   atomicity: atomic or non-atomic on the copy unit.
  70   //
  71   // Names are constructed thusly:
  72   //
  73   //     [ 'aligned_' | 'arrayof_' ]
  74   //     ('conjoint_' | 'disjoint_')
  75   //     ('words' | 'bytes' | 'jshorts' | 'jints' | 'jlongs' | 'oops')
  76   //     [ '_atomic' ]
  77   //
  78   // Except in the arrayof case, whatever the alignment is, we assume we can copy
  79   // whole alignment units.  E.g., if BytesPerLong is 2x word alignment, an odd
  80   // count may copy an extra word.  In the arrayof case, we are allowed to copy
  81   // only the number of copy units specified.
  82   //
  83   // All callees check count for 0.
  84   //
  85 
  86   // HeapWords
  87 
  88   // Word-aligned words,    conjoint, not atomic on each word
  89   static void conjoint_words(HeapWord* from, HeapWord* to, size_t count) {
  90     assert_params_ok(from, to, LogHeapWordSize);
  91     pd_conjoint_words(from, to, count);
  92   }
  93 
  94   // Word-aligned words,    disjoint, not atomic on each word
  95   static void disjoint_words(HeapWord* from, HeapWord* to, size_t count) {
  96     assert_params_ok(from, to, LogHeapWordSize);
  97     assert_disjoint(from, to, count);
  98     pd_disjoint_words(from, to, count);
  99   }
 100 
 101   // Word-aligned words,    disjoint, atomic on each word
 102   static void disjoint_words_atomic(HeapWord* from, HeapWord* to, size_t count) {
 103     assert_params_ok(from, to, LogHeapWordSize);
 104     assert_disjoint(from, to, count);
 105     pd_disjoint_words_atomic(from, to, count);
 106   }
 107 
 108   // Object-aligned words,  conjoint, not atomic on each word
 109   static void aligned_conjoint_words(HeapWord* from, HeapWord* to, size_t count) {
 110     assert_params_aligned(from, to);
 111     pd_aligned_conjoint_words(from, to, count);
 112   }
 113 
 114   // Object-aligned words,  disjoint, not atomic on each word
 115   static void aligned_disjoint_words(HeapWord* from, HeapWord* to, size_t count) {
 116     assert_params_aligned(from, to);
 117     assert_disjoint(from, to, count);
 118     pd_aligned_disjoint_words(from, to, count);
 119   }
 120 
 121   // bytes, jshorts, jints, jlongs, oops
 122 
 123   // bytes,                 conjoint, not atomic on each byte (not that it matters)
 124   static void conjoint_jbytes(void* from, void* to, size_t count) {
 125     pd_conjoint_bytes(from, to, count);
 126   }
 127 
 128   // bytes,                 conjoint, atomic on each byte (not that it matters)
 129   static void conjoint_jbytes_atomic(void* from, void* to, size_t count) {
 130     pd_conjoint_bytes(from, to, count);
 131   }
 132 
 133   // jshorts,               conjoint, atomic on each jshort
 134   static void conjoint_jshorts_atomic(jshort* from, jshort* to, size_t count) {
 135     assert_params_ok(from, to, LogBytesPerShort);
 136     pd_conjoint_jshorts_atomic(from, to, count);
 137   }
 138 
 139   // jints,                 conjoint, atomic on each jint
 140   static void conjoint_jints_atomic(jint* from, jint* to, size_t count) {
 141     assert_params_ok(from, to, LogBytesPerInt);
 142     pd_conjoint_jints_atomic(from, to, count);
 143   }
 144 
 145   // jlongs,                conjoint, atomic on each jlong
 146   static void conjoint_jlongs_atomic(jlong* from, jlong* to, size_t count) {
 147     assert_params_ok(from, to, LogBytesPerLong);
 148     pd_conjoint_jlongs_atomic(from, to, count);
 149   }
 150 
 151   // oops,                  conjoint, atomic on each oop
 152   static void conjoint_oops_atomic(oop* from, oop* to, size_t count) {
 153     assert_params_ok(from, to, LogBytesPerHeapOop);
 154     pd_conjoint_oops_atomic(from, to, count);
 155   }
 156 
 157   // overloaded for UseCompressedOops
 158   static void conjoint_oops_atomic(narrowOop* from, narrowOop* to, size_t count) {
 159     assert(sizeof(narrowOop) == sizeof(jint), "this cast is wrong");
 160     assert_params_ok(from, to, LogBytesPerInt);
 161     pd_conjoint_jints_atomic((jint*)from, (jint*)to, count);
 162   }
 163 
 164   // Copy a span of memory.  If the span is an integral number of aligned
 165   // longs, words, or ints, copy those units atomically.
 166   // The largest atomic transfer unit is 8 bytes, or the largest power
 167   // of two which divides all of from, to, and size, whichever is smaller.
 168   static void conjoint_memory_atomic(void* from, void* to, size_t size);
 169 
 170   // bytes,                 conjoint array, atomic on each byte (not that it matters)
 171   static void arrayof_conjoint_jbytes(HeapWord* from, HeapWord* to, size_t count) {
 172     pd_arrayof_conjoint_bytes(from, to, count);
 173   }
 174 
 175   // jshorts,               conjoint array, atomic on each jshort
 176   static void arrayof_conjoint_jshorts(HeapWord* from, HeapWord* to, size_t count) {
 177     assert_params_ok(from, to, LogBytesPerShort);
 178     pd_arrayof_conjoint_jshorts(from, to, count);
 179   }
 180 
 181   // jints,                 conjoint array, atomic on each jint
 182   static void arrayof_conjoint_jints(HeapWord* from, HeapWord* to, size_t count) {
 183     assert_params_ok(from, to, LogBytesPerInt);
 184     pd_arrayof_conjoint_jints(from, to, count);
 185   }
 186 
 187   // jlongs,                conjoint array, atomic on each jlong
 188   static void arrayof_conjoint_jlongs(HeapWord* from, HeapWord* to, size_t count) {
 189     assert_params_ok(from, to, LogBytesPerLong);
 190     pd_arrayof_conjoint_jlongs(from, to, count);
 191   }
 192 
 193   // oops,                  conjoint array, atomic on each oop
 194   static void arrayof_conjoint_oops(HeapWord* from, HeapWord* to, size_t count) {
 195     assert_params_ok(from, to, LogBytesPerHeapOop);
 196     pd_arrayof_conjoint_oops(from, to, count);
 197   }
 198 
 199   // Known overlap methods
 200 
 201   // Copy word-aligned words from higher to lower addresses, not atomic on each word
 202   inline static void conjoint_words_to_lower(HeapWord* from, HeapWord* to, size_t byte_count) {
 203     // byte_count is in bytes to check its alignment
 204     assert_params_ok(from, to, LogHeapWordSize);
 205     assert_byte_count_ok(byte_count, HeapWordSize);
 206 
 207     size_t count = (size_t)round_to(byte_count, HeapWordSize) >> LogHeapWordSize;
 208     assert(to <= from || from + count <= to, "do not overwrite source data");
 209 
 210     while (count-- > 0) {
 211       *to++ = *from++;
 212     }
 213   }
 214 
 215   // Copy word-aligned words from lower to higher addresses, not atomic on each word
 216   inline static void conjoint_words_to_higher(HeapWord* from, HeapWord* to, size_t byte_count) {
 217     // byte_count is in bytes to check its alignment
 218     assert_params_ok(from, to, LogHeapWordSize);
 219     assert_byte_count_ok(byte_count, HeapWordSize);
 220 
 221     size_t count = (size_t)round_to(byte_count, HeapWordSize) >> LogHeapWordSize;
 222     assert(from <= to || to + count <= from, "do not overwrite source data");
 223 
 224     from += count - 1;
 225     to   += count - 1;
 226     while (count-- > 0) {
 227       *to-- = *from--;
 228     }
 229   }
 230 
 231   /**
 232    * Copy and *unconditionally* byte swap elements
 233    *
 234    * @param src address of source
 235    * @param dst address of destination
 236    * @param byte_count number of bytes to copy
 237    * @param elem_size size of the elements to copy-swap
 238    */
 239   static void conjoint_swap(address src, address dst, size_t byte_count, size_t elem_size);
 240 
 241   // Fill methods
 242 
 243   // Fill word-aligned words, not atomic on each word
 244   // set_words
 245   static void fill_to_words(HeapWord* to, size_t count, juint value = 0) {
 246     assert_params_ok(to, LogHeapWordSize);
 247     pd_fill_to_words(to, count, value);
 248   }
 249 
 250   static void fill_to_aligned_words(HeapWord* to, size_t count, juint value = 0) {
 251     assert_params_aligned(to);
 252     pd_fill_to_aligned_words(to, count, value);
 253   }
 254 
 255   // Fill bytes
 256   static void fill_to_bytes(void* to, size_t count, jubyte value = 0) {
 257     pd_fill_to_bytes(to, count, value);
 258   }
 259 
 260   // Fill a span of memory.  If the span is an integral number of aligned
 261   // longs, words, or ints, store to those units atomically.
 262   // The largest atomic transfer unit is 8 bytes, or the largest power
 263   // of two which divides both to and size, whichever is smaller.
 264   static void fill_to_memory_atomic(void* to, size_t size, jubyte value = 0);
 265 
 266   // Zero-fill methods
 267 
 268   // Zero word-aligned words, not atomic on each word
 269   static void zero_to_words(HeapWord* to, size_t count) {
 270     assert_params_ok(to, LogHeapWordSize);
 271     pd_zero_to_words(to, count);
 272   }
 273 
 274   // Zero bytes
 275   static void zero_to_bytes(void* to, size_t count) {
 276     pd_zero_to_bytes(to, count);
 277   }
 278 
 279  private:
 280   static bool params_disjoint(HeapWord* from, HeapWord* to, size_t count) {
 281     if (from < to) {
 282       return pointer_delta(to, from) >= count;
 283     }
 284     return pointer_delta(from, to) >= count;
 285   }
 286 
 287   // These methods raise a fatal if they detect a problem.
 288 
 289   static void assert_disjoint(HeapWord* from, HeapWord* to, size_t count) {
 290 #ifdef ASSERT
 291     if (!params_disjoint(from, to, count))
 292       basic_fatal("source and dest overlap");
 293 #endif
 294   }
 295 
 296   static void assert_params_ok(void* from, void* to, intptr_t log_align) {
 297 #ifdef ASSERT
 298     if (mask_bits((uintptr_t)from, right_n_bits(log_align)) != 0)
 299       basic_fatal("not aligned");
 300     if (mask_bits((uintptr_t)to, right_n_bits(log_align)) != 0)
 301       basic_fatal("not aligned");
 302 #endif
 303   }
 304 
 305   static void assert_params_ok(HeapWord* to, intptr_t log_align) {
 306 #ifdef ASSERT
 307     if (mask_bits((uintptr_t)to, right_n_bits(log_align)) != 0)
 308       basic_fatal("not word aligned");
 309 #endif
 310   }
 311   static void assert_params_aligned(HeapWord* from, HeapWord* to) {
 312 #ifdef ASSERT
 313     if (mask_bits((uintptr_t)from, BytesPerLong-1) != 0)
 314       basic_fatal("not long aligned");
 315     if (mask_bits((uintptr_t)to, BytesPerLong-1) != 0)
 316       basic_fatal("not long aligned");
 317 #endif
 318   }
 319 
 320   static void assert_params_aligned(HeapWord* to) {
 321 #ifdef ASSERT
 322     if (mask_bits((uintptr_t)to, BytesPerLong-1) != 0)
 323       basic_fatal("not long aligned");
 324 #endif
 325   }
 326 
 327   static void assert_byte_count_ok(size_t byte_count, size_t unit_size) {
 328 #ifdef ASSERT
 329     if ((size_t)round_to(byte_count, unit_size) != byte_count) {
 330       basic_fatal("byte count must be aligned");
 331     }
 332 #endif
 333   }
 334 
 335   // Platform dependent implementations of the above methods.
 336 #include CPU_HEADER(copy)

















 337 
 338 };
 339 
 340 #endif // SHARE_VM_UTILITIES_COPY_HPP
--- EOF ---