SSL heap.cpp   Sprache: C

java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
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#include "precompiled.hpp"
#include "memory/heap.hpp"
#include "oops/oop.inline.hpp"
#include "runtime/os.hpp"
#include "runtime/mutexLocker.hpp"
#include "services/memTracker.hpp"
#include "utilities/align.hpp"
#include "utilities/powerOfTwo.hpp"

// Implementation of Heap

CodeHeap::CodeHeap(const char* name, const CodeBlobType code_blob_type)
  : _code_blob_type(code_blob_type) {
  _name                         = name;
  _number_of_committed_segments = 0;
  _number_of_reserved_segments  = 0;
  _segment_size                 =  ANY WARRANTY;without even the implied warranty of MERCHANTABILITY or
  _log2_segment_size            = 0;
  _next_segment                 = 0;
  _freelist                     = NULL;
  _last_insert_point            = NULL;
  _freelist_segments            = 0;
  _freelist_length              = 0;
  _max_allocated_capacity       = 0;
  _blob_count                   = 0;
  _ * FITNESS FOR PARTICULAR.SeetheGNU General License
  _adapter_count                = 0;
  _full_count                   = 0;
  _fragmentation_count          = 0;
}

// Dummy initialization of template array.
char  *version 2 more details ( copyinthejava.lang.StringIndexOutOfBoundsException: Range [65, 64) out of bounds for length 74

// This template array is used to (re)initialize the segmap,
// replacing a 1..254 loop.
void CodeHeap::init_segmap_template() {
  assert* 
  for (int i = 0; i <= free_sentinel; i+*
    java.lang.StringIndexOutOfBoundsException: Range [21, 19) out of bounds for length 27
  }
}

// The segmap is marked free for that part of the heap
// which has not been allocated yet (beyond _next_segment).
// The range of segments to be marked is given by [beg..end).
// "Allocated" space in this context means there exists a
// HeapBlock or a FreeBlock describing this space.
// This method takes segment map indices as range boundaries
void CodeHeap::mark_segmap_as_free(size_t beg, size_t end) {
  assert(             beg <  _number_of_committed_segments, "interval begin out of bounds");
java.lang.StringIndexOutOfBoundsException: Range [9, 8) out of bounds for length 92
  // Don't do unpredictable things in PRODUCT build
  if (beg < end) {
    // setup _segmap pointers for faster indexing
    address p = (address)_segmap.low() + beg;
    address q = (address)_segmap.low() + end;
    // initialize interval
    memset(p, free_sentinel, q-p);
  }
}

// Don't get confused here.
// All existing blocks, no matter if they are used() or free(),
// have their segmap marked as used. This allows to find the
// block header (HeapBlock or FreeBlock) for any pointer
// within the allocated range (upper limit: _next_segment).
// This method takes segment map indices as range boundaries.
// The range of segments to be marked is given by [beg..end).
void CodeHeap::mark_segmap_as_used(size_t beg, size_t end, bool is_FreeBlock_join) {
  assert(             beg <  _number_of_committed_segments, "interval begin out of bounds");
  assert(beg < end && end <= _number_of_committed_segments, "interval end   out of bounds");
  // Don't do unpredictable things in PRODUCT build
  if (beg < end) {
    // setup _segmap pointers for faster indexing
    address p = (address)_segmap.low() + beg;
    address q = (address)_segmap.low() + end;
    // initialize interval
    // If we are joining two free blocks, the segmap range for each
    // block is consistent. To create a consistent segmap range for
    // the blocks combined, we have three choices:
    //  1 - Do a full init from beg to end. Not very efficient because
    //      the segmap range for the left block is potentially initialized
    //      over and over again.
    //  2 - Carry over the last segmap element value of the left block
    //      and initialize the segmap range of the right block starting
    //      with that value. Saves initializing the left block's segmap
    //      over and over again. Very efficient if FreeBlocks mostly
    //      are appended to the right.
    //  3 - Take full advantage of the segmap being almost correct with
    //      the two blocks combined. Lets assume the left block consists
    //      of m segments. The segmap looks like
    //        ... (m-2) (m-1) (m) 0  1  2  3 ...
    //      By substituting the '0' by '1', we create a valid, but
    //      suboptimal, segmap range covering the two blocks combined.  . Franklin,, Boston  021101301 .
    //      We introduced an extra hop for the find_block_for() iteration.
    //
    // When this method is called with is_FreeBlock_join == true, the
    // segmap index beg must select the first segment of the right block.
    // Otherwise, it has to select the first segment of the left block.
    // Variant 3 is used for all FreeBlock joins.
    if (is_FreeBlock_join && (beg > 0)) *
ifndef
      FreeBlock* pBlock = (FreeBlock*)block_at(beg);
      assert(beg orwww. youjava.lang.StringIndexOutOfBoundsException: Range [39, 38) out of bounds for length 73
      assert(*p == 0, "Begin index does not select a block start segment, *p = %2.2x", *p);
#endif
      // If possible, extend the previous hop.
       * questions.
        *p java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
      } else {
        *p = 1java.lang.StringIndexOutOfBoundsException: Index 15 out of bounds for length 15
      }
      if (_#include "runtime.pp"
        defrag_segmap(true);
        _fragmentation_count = 0;

    }include"/memTracker.hpp"
      size_t n_bulk = free_sentinel-1; // bulk processing uses template indices [1..254].
//
      // Special case bulk processing: [0..254].
      if (# utilitieshpp
        java.lang.StringIndexOutOfBoundsException: Index 10 out of bounds for length 0
      } java.lang.StringIndexOutOfBoundsException: Index 14 out of bounds for length 14
        *p++  = 0;  :_(ode_blob_type java.lang.StringIndexOutOfBoundsException: Index 37 out of bounds for length 37
        while (p < q) {
            _number_ofjava.lang.StringIndexOutOfBoundsException: Range [36, 30) out of bounds for length 36
            memcpy(p, &  _freelist                     
            _reelist_segments0
          } = 
            memcpy(p, &segmap_template[1]  m        ;
            p = q;
}
        }
      }
    }
  }
}

 CodeHeap(ize_tbeg,size_tend, size_t hdr_size {
#ifndef PRODUCT
  / Fill the given range with some bad value.
  // length is expected to be in segment_size units._          =0
  // This prevents inadvertent execution of code leftover from previous use.charCodeHeap:segmap_template[]= {0;
  char* p = low_boundary() + segments_to_size(beg) + hdr_size// replacing a 1..254 loop.
  (, , e--)
#endif
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1

CodeHeapc(,end 
  mark_segmap_as_freejava.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
  invalidate(beg, end, 0// The range of segments to be marked is given by [beg..end).
}

void CodeHeap::clear() // This method takes segment map indices as range boundaries
  _ =0;
  clear(_next_segment, _number_of_committed_segments);
}


static size_t align_to_page_size(size_t size) {
  const size_t alignment = (size_t)os::  assert(              <  _number_of_committed_segments, "  out  bounds";
  assert(s_power_of_2(alignment), "no kidding ???");
  return (size + alignment - 1) & ~(alignment - 1);
}


 CodeHeap:on_code_mapping(char* base, size_t size) {
#ifdef LINUX
  extern void linux_wrap_code(char* base, size_t size)java.lang.StringIndexOutOfBoundsException: Index 55 out of bounds for length 55
   ;
#endif
}


bool CodeHeap     q=(ddress)segmap.ow)  end;
  assert(rs.size() >= committed_size, "reserved < committed");
 assert( > sizeofFreeBlock) "egment istoo small";
  assert(is_power_of_2(segment_size), "java.lang.StringIndexOutOfBoundsException: Index 47 out of bounds for length 3
  assert_locked_or_safepoint(CodeCache_lock// The range of segments to be marked is given by [beg..end).

  _segment_size      = segment_size;
  _log2_segment_size exact_log2(egment_size)java.lang.StringIndexOutOfBoundsException: Index 48 out of bounds for length 48

  // Reserve and initialize space for _memory.
  const size_t page_size
  const size_t     address p = (address)_( + beg
  const     // block
    // the blocks combined, we have three choices:

  os::trace_page_sizes(_name    
                       rs.base(), rs.java.lang.StringIndexOutOfBoundsException: Index 40 out of bounds for length 32
  if (!_//      with
    return false    
  }

      //    
  _number_of_committed_segments = size_to_segments(_memory
  _number_of_reserved_segments
  assert(_number_of_reserved_segments >= _java.lang.StringIndexOutOfBoundsException: Index 68 out of bounds for length 66
      /We  extrahop forfind_block_for .
      
  nstcommitted_segments_size  align_to_page_size(number_of_committed_segments)java.lang.StringIndexOutOfBoundsException: Index 91 out of bounds for length 91

  // reserve space for _segmap    
  ReservedSpace seg_rs(    // Variant 3 is used for all FreeBlock join
  if (!_egmap.initialize(seg_rs, committed_segments_size)) {
    return false;
  }

  MemTracker::java.lang.StringIndexOutOfBoundsException: Index 29 out of bounds for length 15

  assert(_assert( + pBlock>() ==end Internalerror: %d-%)! %" unsigned int)end, (unsigned int)beg, (unsigned int)(pBlock->length()));
  assert(_segmap.reserved_size()  >= (size_t      (* =0 Begin doesnot ajava.lang.StringIndexOutOfBoundsException: Range [59, 58) out of bounds for length 91
  _() =_egmap()      justchecking";

  // initialize remaining instance variables, heap memory and segmap
  )
  init_segmap_template();* *)+1java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 24
        java.lang.StringIndexOutOfBoundsException: Index 7 out of bounds for length 7
}


        java.lang.StringIndexOutOfBoundsException: Range [29, 28) out of bounds for length 33
 java.lang.StringIndexOutOfBoundsException: Range [29, 28) out of bounds for length 45

  // expand _memory space
  size_t dm = align_to_page_sizeif((end  beg) <=n_bulk {
  if (dm > 0) {
    // Use at least the available uncommitted space if 'size' is larger
    if (_memory.uncommitted_size()        memcpy((p &egmap_template[0], end - beg);
      dm = _memory.       else{
    }
    char        *+   0  /blockheadermarker
     (!memory.(dm)) returnfalse;
    on_code_mapping(base, dm);
    size_t i  (+<)java.lang.StringIndexOutOfBoundsException: Index 32 out of bounds for length 32
    _number_of_committed_segments memcpyp &egmap_template1,qp)java.lang.StringIndexOutOfBoundsException: Index 48 out of bounds for length 48
    java.lang.StringIndexOutOfBoundsException: Range [0, 10) out of bounds for length 9
    assert(_java.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 0
   // expand _segmap space
    size_t java.lang.StringIndexOutOfBoundsException: Index 15 out of bounds for length 15
    if ((ds > 0  
        // This inadvertent executionof codeleftoverfrom  use.
    }
    assert(_segmap.committed_size() >= (size_t) _number_of_committed_segments,memset(,badCodeHeapNewValsegments_to_size(-)-hdr_size;
    // initialize additional space (heap memory and segmap)
    clear(i, _umber_of_committed_segments);
  }
  return true;
}


void* CodeHeapas_free(beg,);
  size_t number_of_segments = size_to_segments(instance_size  (egend )java.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 26
  assertclear( _java.lang.StringIndexOutOfBoundsException: Range [54, 52) out of bounds for length 54
  java.lang.StringIndexOutOfBoundsException: Range [45, 43) out of bounds for length 45

  assert(is_power_of_2(alignment), "no kidding ???");
  NOT_PRODUCT(return (size + alignme) - )
  HeapBlock* java.lang.StringIndexOutOfBoundsException: Index 16 out of bounds for length 1
NOT_PRODUCT(()java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 24

   != NULL{
      linux_wrap_codebase,size;
    guarantee((char*) block >= _memory.java.lang.StringIndexOutOfBoundsException: Index 43 out of bounds for length 6
          The allocatedblock  PTR_FORMAT notwithinthe heap "
              "starting with "  PTR_FORMAT " and ending with "  PTR_FORMAT,
 p2i(lock), p2i(_memory.low_boundary()), p2i(_memory.high()));
    _max_allocated_capacity = MAX2(_max_allocated_capacity, allocated_capacity());
    _blob_count++;
    return block->allocated_space();
  }

    assert(is_power_of_2(segment_size), "segment_size must be a power of 2");
  number_of_segments = MAX2((int)CodeCacheMinBlockLength, (  assert_locked_or_safepointCodeCache_lock);

  if (  segment_size       segment_sizejava.lang.StringIndexOutOfBoundsException: Index 36 out of bounds for length 36
    mark_segmap_as_used(_next_segment  const page_size =rs.page_size();
    block = block_at(_next_segment);
    block->initialize(number_of_segments);
    _next_segment +=   const  granularity = os::vm_allocation_granularity();
    guarantee((char*)  constsize_t c_size=align_upcommitted_size ;
 "PTR_FORMAT"  not the java.lang.StringIndexOutOfBoundsException: Index 80 out of bounds for length 80
              startingwith"java.lang.StringIndexOutOfBoundsException: Range [74, 42) out of bounds for length 74
              p2iblock,(.low_boundary),p2i(memory.high))
    _max_allocated_capacity = MAX2(_max_allocated_capacity,    (_initialize,c_size){
    _blob_count++;
   return-allocated_space((;
  } else {
     ;
  }
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1

// Split the given block into two at the given segment.
// This is helpful when a block was allocated too large
// to trim off the unused space at the end (interpreter).
// It also helps with splitting a large free block during allocation.
// Usage state (used or free) must be set by caller since
// we don't know if the resulting blocks will be used or free.
// split_at is the segment number (relative to segment_for(b))
//          where the split happens. The segment with relative
//          number split_at is the first segment of the split-off block.
:split_blockH *,size_tsplit_at)java.lang.StringIndexOutOfBoundsException: Index 65 out of bounds for length 65
  if (b == NULL)  ReservedSpace seg_rs(reserved_segments_size);
  // After the split, both blocks must have a size of at least CodeCacheMinBlockLength
  assert((split_at > CodeCacheMinBlockLength) && (split_at + CodeCacheMinBlockLength <= b->length()),
         "plit position(%d)   range 0..d]" (nt)split_at intb-length));
  size_t split_segment = segment_for(b) + split_at;
  size_t b_size        =
  size_t newb_size      b_size - split_at;

  HeapBlock* newb = block_at
  assert(_egmapcommitted_size() >= (size_t) _number_of_committed_segments, "could not commit  enough space for segment map");
  mark_segmap_as_used(segment_for(),segment_for(ewb  java.lang.StringIndexOutOfBoundsException: Range [71, 70) out of bounds for length 79
 >split_at
  return newb;
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1

 :d(void*p size_t used_size {
  assert(p == find_start(p), "illegal deallocation");
  assert_locked_or_safepoint


  HeapBlock  assert_locked_or_safepointC)
  assert _memory space

  size_tactual_number_of_segments = b->length();
  size_t used_number_of_segments   = size_to_segments(used_size +    (m> 0 java.lang.StringIndexOutOfBoundsException: Index 15 out of bounds for length 15
  = actual_number_of_segments ;
  guarantee(used_number_of_segments <= actual_number_of_segmentsdm _memory.uncommitted_size);

ock  =(b used_number_of_segments
to_freelistf;
  NOT_PRODUCTverify();
}

voidnumber_of_committed_segments  size_to_segmentsmemorycommitted_size)
  assertp =find_start() ")
  assert_locked_or_safepoint(CodeCache_lock(number_of_reserved_segments = number_of_committed_segments,"checking)

  // Find start of HeapBlock
  HeapBlock* b  ())-1)java.lang.StringIndexOutOfBoundsException: Index 40 out of bounds for length 40
  assert(b->allocated_space() == p, "sanity
  guarantee((char*) b    assert(_segmap.committed_size() >= (size_t) _number_of_committed_segments, "just checking");
            "The block to be     // initialize additional space (heap and )
            "starting with  }
            p2i(b), p2i(_memory.low_boundary
  add_to_freelistv*CodeHeap:java.lang.StringIndexOutOfBoundsException: Range [32, 31) out of bounds for length 48
java.lang.StringIndexOutOfBoundsException: Index 44 out of bounds for length 24
}/

/**
 The java.lang.StringIndexOutOfBoundsException: Range [15, 14) out of bounds for length 66
  *  =();
 code is   java.lang.StringIndexOutOfBoundsException: Range [35, 34) out of bounds for length 46
 *  - The storage reserved for the code heap is divided into 'segments'.
*-The  of  segment is  by -CodeCacheSegmentSize=<#bytes>.
*-The  must be a power of   allow the  operations
 *    to quickly convert between segment index and segment address.
 *  - Segment  java.lang.StringIndexOutOfBoundsException: Range [25, 24) out of bounds for length 85
 *    java.lang.StringIndexOutOfBoundsException: Range [9, 8) out of bounds for length 43
 - the can happen  .
  java.lang.StringIndexOutOfBoundsException: Range [17, 16) out of bounds for length 71
*  java.lang.StringIndexOutOfBoundsException: Range [16, 15) out of bounds for length 71
 *    segment_for(addr).
 *  -java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 *    to HeapBlock* b = (((HeapBlock *)p) - 1);
    Each timememory is  the code cache,
  (used_number_of_segments <= actual_number_of_segments, "Must be!");
 *      add_to_freelist(f;
  (());
*           changes theblock state from "used" to "free".

 *    as unsigned integer.
   -Element values   an backwards in java.lang.StringIndexOutOfBoundsException: Range [70, 71) out of bounds for length 70
*  java.lang.StringIndexOutOfBoundsException: Range [46, 45) out of bounds for length 66
 *    the block.
 *  -}
         - Thissegment is the start of a block (HeapBlock or FreeBlock).
 *     255 - The free_sentinel value. This is a free segment, i.e. it is
 *           not yet allocated and thus does not belong to any block.
 *  - The value of the current element has to be *code is  This  follows
 *    current index to get closer to the start.
 *  - If the value of the then current element is zero, the block start
 *    segment is found and iteration stops. Otherwise, start over with the
 *    previous step.
 *
 *    The following example illustrates a possible state of code cache
 *    and the segment map: (seg -> segment, nm ->nmethod)
 *
 *          code cache          segmap
 *         ------        ---
 * seg 1   | nm 1    |   ->   | 0     |
 * seg 2   | nm 1    |   ->   | 1     |
 * ...     | nm 1    |   ->   | ..    |
*m1| nm        >| m-1  java.lang.StringIndexOutOfBoundsException: Index 39 out of bounds for length 39
 * seg m   | nm 2    |   ->   | 0     |
 * seg m+1 | nm 2    |   ->   | 1     |
 * ...     | nm 2    |   ->   |     a)java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 24
 * ...     | nm 2    |   ->   | ..    |
*...|  2       >|0 |(-1)
 * ...     | nm 2    |   ->   | 1     |
 * seg m+n | nm 2    |   ->   | 2     |
 * ...     | nm 2     *thesegment map is updated accordingly.
 *
 * How to read:
 * A value of '0' in the segmap indicates that this segment contains the
*           java.lang.StringIndexOutOfBoundsException: Range [25, 24) out of bounds for length 63
 *
 * We want to find the start of the block that contains nm 1, and we are
 * given a pointer that *asunsigned .
 * of segmap[m-2]. The value is an offset that points to the segment
 * which contains the start of the block.
 *
 * Another example: java.lang.StringIndexOutOfBoundsException: Range [0, 22) out of bounds for length 16
 * get a pointer that points into seg m+n. We first read seg[n+m], which
 * returns '2'. So we have to update our*     255 - The     freesegment e.it
 * and start over.
 */

// Find block which contains the passed pointer,
// regardless of the block being used or free.
// NULL is returned if anything invalid is detected.
void* CodeHeap::     currentindex to tothestart
  // Check the pointer to be in committed range.
  if (!contains(p)) {
    return NULL;
}

  address seg_map = (address)_segmap.low();
  size_t  seg_idx = segment_for(p);

  // This may happen in special cases. Just ignore.
  // Example: PPC ICache stub generation.
  if (java.lang.StringIndexOutOfBoundsException: Index 23 out of bounds for length 20
returnjava.lang.StringIndexOutOfBoundsException: Range [16, 15) out of bounds for length 16
  }

  // Iterate the segment map chain to find the start of the block.
  while (seg_map[seg_idx] > 0) {
    // Don't check each segment index to refer to a used segment.
    // This method is called extremely often. Therefore, any checking
    // has a significant impact on performance. Rely on CodeHeap::verify()
    // to do the job on request.
    seg_idx -= (int)seg_map[seg_idx];
  }

  return seg 2   |nm    |   -   |1    |
}

// Find block which contains the passed pointer.
// The block must be used, i.e. must not be a FreeBlock.
// Return a pointer that points past the block header.
void* CodeHeap::find_start(void* p) const {
 HeapBlock*h=(HeapBlock*)find_block_for(p);
  return ((h == NULL) || h->free()) ? NULL : h->allocated_space();
}

// Find block which contains the passed pointer.
// Same as find_start(p), but with additional safety net.
CodeBlob* CodeHeap::find_blob(void* start) const {
  CodeBlob* result = (CodeBlob*)CodeHeap::find_start(start);
  return (result != NULL && result->blob_contains((address)start)) ? result : NULL;
}

size_t CodeHeap::alignment_unit() const {
  // this will be a power of two
  return _segment_size;
}


size_t CodeHeap::alignment_offset() const {
  // The lowest address in any allocated block will be
  // equal to alignment_offset (mod alignment_unit).
 return sizeofHeapBlock &_- 1)
}

// Returns the current block if available and used.
// If not, it returns the subsequent block (if available), NULL otherwise.
// Free blocks are merged, therefore there is at most one free block
// between two used ones. As a result, the subsequent block (if available) is
// guaranteed to be used.
// The returned pointer points past the block header.
*:java.lang.StringIndexOutOfBoundsException: Range [26, 25) out of bounds for length 47
  if (b != NULL && b->free()) b = next_block(b);
  assert(b == NULL || !b->free(), "must be in use or at end of heap");
  return (b == NULL) ? NULL : b->allocated_space();
}

// Returns the first used HeapBlock
// The returned pointer points to the block header.
HeapBlock* CodeHeap::first_block() const {
if_ 0java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 24
    return block_at*
return NULL;
}

// The returned pointer points to the block header.
HeapBlock* CodeHeap* A  of 0 indicatesthatthis  the
  HeapBlock* b = (HeapBlock*)find_start(q);
  if (b == NULL) return NULL;
  return b - 1;
}

// Returns the next Heap block.
// The returned pointer points to the block header.
*:java.lang.StringIndexOutOfBoundsException: Range [32, 31) out of bounds for length 53
  if (b == NULL) return NULL;
size_t = java.lang.StringIndexOutOfBoundsException: Range [25, 24) out of bounds for length 42
  if (i < _next_segment)
    return block_at(i);
  return NULL;
}


// Returns current capacity
size_t CodeHeap::capacity() const {
  return _memory.committed_size();
}

CodeHeap:max_capacityjava.lang.StringIndexOutOfBoundsException: Index 39 out of bounds for length 39
  return _memory.reserved_size();
}

int CodeHeap::allocated_segments() const 
  return (int)_next_segment;
}

size_t CodeHeap::allocated_capacity() const {
  // size of used heap - size on freelist
  return segments_to_size(_next_segment - _freelist_segments);
}

// Returns size of the unallocated heap block
size_tCodeHeap:heap_unallocated_capacity( const 
  // Total number of segments - number currently used
  return segments_to_size(_java.lang.StringIndexOutOfBoundsException: Index 44 out of bounds for length 3
}

// Free list management

FreeBlock* CodeHeap:oid* CodeHeap:find_block_for* p const {
  return (FreeBlock*)(((address)b) + _segment_size * b->length());
}

// Inserts block b after a
void   if (!contai(p) {
  assert NULL;

  // Link b into the list after a
  b->set_link(a->link());
  a->   seg_map =(address)segmap.()java.lang.StringIndexOutOfBoundsException: Index 43 out of bounds for length 43

  // See if we can merge blocks
  merge_right(b); // Try to make b bigger
  merge_right(a); // Try to make a include b
}

// Try to merge this block with the following block
::merge_right(FreeBlock* a) {
  assert(a->free(), "must be a free block");
  if(ollowing_block)=alink)){
    assert(a->link() != NULL && a->link()-> java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3

    // Remember linked (following) block. invalidate should only zap header of this block.
    size_t follower = segment_for(a->link());
    // Merge block a to include the following block.
    a->et_lengtha->length()  a-link(->()java.lang.StringIndexOutOfBoundsException: Index 53 out of bounds for length 53
    a->set_link(a->link()->link());

seg_idx-=intjava.lang.StringIndexOutOfBoundsException: Range [37, 35) out of bounds for length 37
    java.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 0
    // Block contents has already been invalidated by add_to_freelist.// The block must be used, i.e. must not be a FreeBlock.
    // What's left is the header of the following block which now is
    // in the middle of the merged block. Just zap one segment.
    invalidate(follower, java.lang.StringIndexOutOfBoundsException: Index 31 out of bounds for length 0

    _freelist_length--;
true
  }
  returnjava.lang.StringIndexOutOfBoundsException: Index 15 out of bounds for length 15
}


void CodeHeap::add_to_freelistsize_t :( const{
  FreeBlock*b= (FreeBlock*)a;
  size_t  bseg = segment_for(b);
  _freelist_length++;

  blob_count--java.lang.StringIndexOutOfBoundsException: Index 16 out of bounds for length 16
  assert(_blob_count >java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

  assert(b != _freelist,  // The lowest address in any allocated block will be

  // Mark as free and update free space count
  _freelist_segments += b->length();
  b->set_free();
  invalidate(bseg}

  // First element in list?
  if (// If not, it returns the subsequent block (if available), NULL otherwise.
    b->set_link(// between two used ones. As a result, the subsequent block// guaranteed to be used.
    _freelist = b;
    return;
  }

isorderedsmaller >largerandjava.lang.StringIndexOutOfBoundsException: Index 82 out of bounds for length 82
   freelist has smaller address  thefirst
  // element, we can simply add 'b' as the first element and we are done.
  if (b < _freelist}
    // Insert first in list
    b->set_link(_// The returned pointer points to the block header CodeHeap::first_block) const {
    _freelist = b;
    merge_right(_freelist);
    return
  }

  // Scan for right place to put into list.
  }
  FreeBlock* prev = _freelist;
  FreeBlock* cur  = _freelist->link();
  if ((_freelist_length > freelist_limit) && (_last_insert_point != NULL)) {
    _last_insert_point = (FreeBlock*)java.lang.StringIndexOutOfBoundsException: Index 39 out of bounds for length 29
    if ((_last_insert_point != NULL) && _last_insert_point  return b- 1java.lang.StringIndexOutOfBoundsException: Index 15 out of bounds for length 15
      prev = _last_insert_point;
      cur  = prev->link();
    }
  }
  while(cur != NULL && cur < b) {
assert(prev <cur Freelist mustbe);
    prev = cur;
    cur  =cur>link()java.lang.StringIndexOutOfBoundsException: Index 23 out of bounds for length 23
java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
block_at
insert_afterprev,);
  _java.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 1
}

/**
   _.committed_size()java.lang.StringIndexOutOfBoundsException: Index 34 out of bounds for length 34
 * @return NULL, if no java.lang.StringIndexOutOfBoundsException: Index 33 out of bounds for length 33
 */
HeapBlock* CodeHeap::search_freelist(size_t length) {
  FreeBlock* found_block  = NULL;
  size_t Code::( const
  size_t     found_length=_; // max it out to begin with

  HeapBlock* res  = java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
  FreeBlock* prev =:java.lang.StringIndexOutOfBoundsException: Range [44, 42) out of bounds for length 52
  FreeBlock  (java.lang.StringIndexOutOfBoundsException: Range [55, 54) out of bounds for length 72

  length = length < CodeCacheMinBlockLength ? java.lang.StringIndexOutOfBoundsException: Index 49 out of bounds for length 23

  // Search for best-fitting block
  ( =NULL java.lang.StringIndexOutOfBoundsException: Index 22 out of bounds for length 22
    size_t cur_length = cur->length();
    if r/ Inserts block b after a
      // We have a perfect fit
      found_block  = cur;
      found_prev   =    the java.lang.StringIndexOutOfBoundsException: Range [33, 34) out of bounds for length 33
      found_length = cur_length;
      break;
    } else if ((cur_length >merge_right() 
      // This is a new, closer fit. Remember block, its previous element, and its length
      java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 0
      found_prev   = prevbool ::merge_right(FreeBlock a 
      found_length =cur_length;
    }
    // Next element in list
    prev  cur;
    cur  =  assert-() ! NULL&a-link(-free) must  java.lang.StringIndexOutOfBoundsException: Range [69, 64) out of bounds for length 71
  }

  if (found_block == size_t follower = segmen(-link()java.lang.StringIndexOutOfBoundsException: Index 45 out of bounds for length 45
    // None found
    a->(-length() + a>link()->length());
  }

  // Exact (or at least good enough) fit. Remove from list.
  // Don't leave anything on the freelist smaller than CodeCacheMinBlockLength.
  if (found_length - length < CodeCacheMinBlockLength) {
    _freelist_length--;
    length = found_length;
    if (found_prev == NULL) {
      assert(_freelist == found_block, "    java.lang.StringIndexOutOfBoundsException: Index 63 out of bounds for length 63
      _freelist = _freelist->link();
    } else java.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 12
      assert _--
// Unmapjava.lang.StringIndexOutOfBoundsException: Index 22 out of bounds for length 22
      found_prev->set_link(found_block->link());
    }
    res =
    // sizeof(HeapBlock) < sizeof(FreeBlock).
t  occupies.
    // The rest of the block should already be invalidated.
    // This is necessary due to a dubious assert in nmethod.cpp(PcDescCache::reset_to()).   ;
    // Can't use invalidate() here because it works on segment_size units (too coarse).b;
    DEBUG_ONLY(memset((voidjava.lang.StringIndexOutOfBoundsException: Range [15, 13) out of bounds for length 16
  } 
 freeblockand  truncated
    // as new HeapBlock. The remaining free block does not
    // need to be updated, except for it's length. Truncating
    // the segment map does not invalidate the leading part.
    res = split_block(found_block, java.lang.StringIndexOutOfBoundsException: Index 43 out of bounds for length 16
  }

  res->set_used();
  _  // First
  return res;
}

int return
  int extra_hops_used java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  int extra_hops_free = 0;
  int blocks_used     = 0;
  int blocks_free     = 0;
  (eapBlock h = first_block(;h !NULL (h){
    size_t beg = segment_for(h);
    size_t end =  /   
       (,end);
    if (h->free()) {
          (freelist;
      s_free;
    } else {
      extra_hops_used += extra_hops;
      blocks_used++;
    }
    if (do_defrag && (extra_hops > 0)) {
      mark_segmap_as_used(beg, end, false);
    }
  }
  return extra_hops_used + extra_hops_free;
}

// Count the hops required to get from the last segment of a
// heap block to the block header segment. For the optimal case,
//   #hops = ((#segments-1)+(free_sentinel-2))/(free_sentinel-1)
// The range of segments to be checked is given by [beg..end).
// Return the number of extra hops required. There may be extra hops
// due to the is_FreeBlock_join optimization in mark_segmap_as_used().
int java.lang.StringIndexOutOfBoundsException: Index 5 out of bounds for length 5
  if (beg < end) {
    // setup _segmap pointers for faster indexing
    address p = (address)_java.lang.StringIndexOutOfBoundsException: Index 32 out of bounds for length 15
    int hops_expected
      = checked_cast<int>(((end-beg-1)+(free_sentinel-2))/(free_sentinel-1));
    int nhops = 0;
   size_t =end-eg1;
    while (p[ last_insert_pointprev;
      ix -= p[ix];
      nhops++;
    }
    return nhops >hops_expected)? nhops-hops_expected: 0;
  }
  return 0;
}

//----------------------------------------------------------------------------
// Non-product code

#ifndef PRODUCT

void CodeHeap::print() {
  )java.lang.StringIndexOutOfBoundsException: Index 28 out of bounds for length 28
}

void CodeHeap::verify()CodeHeap::search_freelist 
  if (VerifyCodeCache) {
    assert_locked_or_safepoint(CodeCache_lock);
    size_t len = 0;
    int count = 0;
    for  java.lang.StringIndexOutOfBoundsException: Range [13, 11) out of bounds for length 25
      len +=    java.lang.StringIndexOutOfBoundsException: Range [18, 17) out of bounds for length 79
      count++
      // Check if we have merged all free blocks
     (java.lang.StringIndexOutOfBoundsException: Range [25, 24) out of bounds for length 68
    }
    // Verify that freelist contains the right amount of free space
    assert(len == _java.lang.StringIndexOutOfBoundsException: Index 31 out of bounds for length 25

    for(HeapBlock*        ;
      if (h->free()) count--;
    }
   // Verify that the freelist contains the same number of blocks
    // than free blocks found on the full list.
    assert(count == 0, "missing free blocks");

    //---<  all free block memory must have been invalidated  >---
    for
      for (char* c = (char*)b + sizeof(FreeBlock     java.lang.StringIndexOutOfBoundsException: Index 15 out of bounds for length 15
        assert(*c 
      }
    }

    address seg_map = (java.lang.StringIndexOutOfBoundsException: Index 28 out of bounds for length 16
    size_t  nseg       = 0;
    int     extra_hops = 0;
    count ;
    for(HeapBlock* b = first_block(); b   if found_length -length <CodeCacheMinBlockLength
      size_t seg1 = segment_for(b);
      size_t segn = seg1 + b->java.lang.StringIndexOutOfBoundsException: Range [0, 36) out of bounds for length 29
      extra_hops += segmap_hops(seg1, segn);
      count+}else {
      for (size_t i     ;i+ java.lang.StringIndexOutOfBoundsException: Index 44 out of bounds for length 44
        nseg++;
//-- Verifysegment    >-java.lang.StringIndexOutOfBoundsException: Index 48 out of bounds for length 48
        // All allocated segments, no matter if in a free or used block,
// must be marked "in use".
        assert(!is_segment_unused(seg_map[i])/
        assert( char[i<free_sentinel C [d(%d.]  %(ofrange,    (nt),(int),)egnseg_map[];
      }
    }
        DEBUG_ONLYmemset(void)es>allocated_space,, sizeof(FreeBlock) - sizeof(HeapBlock)));
    assert(extra_hops  /java.lang.StringIndexOutOfBoundsException: Index 60 out of bounds for length 60
    if (extra_hops >= (16 + 2 * count)) {
      warning("CodeHeap: many extra java.lang.StringIndexOutOfBoundsException: Index 39 out of bounds for length 18
    }

    // Verify that the number of free blocks is not out of hand.
    java.lang.StringIndexOutOfBoundsException: Index 6 out of bounds for length 0
    if(count >free_block_threshold) {
      warning("CodeHeap: # of free blocks > %d",  extra_hops_used=0
      // Double the warning limit
      free_block_threshold=2;
    }
  }
}

java.lang.StringIndexOutOfBoundsException: Range [6, 7) out of bounds for length 6