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-rw-r--r--util/alignedbuilder.cpp141
1 files changed, 0 insertions, 141 deletions
diff --git a/util/alignedbuilder.cpp b/util/alignedbuilder.cpp
deleted file mode 100644
index b2e0461b733..00000000000
--- a/util/alignedbuilder.cpp
+++ /dev/null
@@ -1,141 +0,0 @@
-// @file alignedbuilder.cpp
-
-/**
-* Copyright (C) 2009 10gen Inc.
-*
-* This program is free software: you can redistribute it and/or modify
-* it under the terms of the GNU Affero General Public License, version 3,
-* as published by the Free Software Foundation.
-*
-* This program is distributed in the hope that it will be useful,
-* but WITHOUT ANY WARRANTY; without even the implied warranty of
-* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-* GNU Affero General Public License for more details.
-*
-* You should have received a copy of the GNU Affero General Public License
-* along with this program. If not, see <http://www.gnu.org/licenses/>.
-*/
-
-#include "pch.h"
-#include "alignedbuilder.h"
-
-namespace mongo {
-
- AlignedBuilder::AlignedBuilder(unsigned initSize) {
- _len = 0;
- _malloc(initSize);
- uassert(13584, "out of memory AlignedBuilder", _p._allocationAddress);
- }
-
- BOOST_STATIC_ASSERT(sizeof(void*) == sizeof(size_t));
-
- /** reset for a re-use. shrinks if > 128MB */
- void AlignedBuilder::reset() {
- _len = 0;
- RARELY {
- const unsigned sizeCap = 128*1024*1024;
- if (_p._size > sizeCap)
- _realloc(sizeCap, _len);
- }
- }
-
- /** reset with a hint as to the upcoming needed size specified */
- void AlignedBuilder::reset(unsigned sz) {
- _len = 0;
- unsigned Q = 32 * 1024 * 1024 - 1;
- unsigned want = (sz+Q) & (~Q);
- if( _p._size == want ) {
- return;
- }
- if( _p._size > want ) {
- if( _p._size <= 64 * 1024 * 1024 )
- return;
- bool downsize = false;
- RARELY { downsize = true; }
- if( !downsize )
- return;
- }
- _realloc(want, _len);
- }
-
- void AlignedBuilder::mallocSelfAligned(unsigned sz) {
- assert( sz == _p._size );
- void *p = malloc(sz + Alignment - 1);
- _p._allocationAddress = p;
- size_t s = (size_t) p;
- size_t sold = s;
- s += Alignment - 1;
- s = (s/Alignment)*Alignment;
- assert( s >= sold ); // begining
- assert( (s + sz) <= (sold + sz + Alignment - 1) ); //end
- _p._data = (char *) s;
- }
-
- /* "slow"/infrequent portion of 'grow()' */
- void NOINLINE_DECL AlignedBuilder::growReallocate(unsigned oldLen) {
- dassert( _len > _p._size );
- unsigned a = _p._size;
- assert( a );
- while( 1 ) {
- if( a < 128 * 1024 * 1024 )
- a *= 2;
- else if( sizeof(int*) == 4 )
- a += 32 * 1024 * 1024;
- else
- a += 64 * 1024 * 1024;
- DEV if( a > 256*1024*1024 ) {
- log() << "dur AlignedBuilder too big, aborting in _DEBUG build" << endl;
- abort();
- }
- wassert( a <= 256*1024*1024 );
- assert( a <= 512*1024*1024 );
- if( _len < a )
- break;
- }
- _realloc(a, oldLen);
- }
-
- void AlignedBuilder::_malloc(unsigned sz) {
- _p._size = sz;
-#if defined(_WIN32)
- void *p = VirtualAlloc(0, sz, MEM_COMMIT | MEM_RESERVE, PAGE_READWRITE);
- _p._allocationAddress = p;
- _p._data = (char *) p;
-#elif defined(__linux__)
- // in theory #ifdef _POSIX_VERSION should work, but it doesn't on OS X 10.4, and needs to be testeed on solaris.
- // so for now, linux only for this.
- void *p = 0;
- int res = posix_memalign(&p, Alignment, sz);
- massert(13524, "out of memory AlignedBuilder", res == 0);
- _p._allocationAddress = p;
- _p._data = (char *) p;
-#else
- mallocSelfAligned(sz);
- assert( ((size_t) _p._data) % Alignment == 0 );
-#endif
- }
-
- void AlignedBuilder::_realloc(unsigned newSize, unsigned oldLen) {
- // posix_memalign alignment is not maintained on reallocs, so we can't use realloc().
- AllocationInfo old = _p;
- _malloc(newSize);
- assert( oldLen <= _len );
- memcpy(_p._data, old._data, oldLen);
- _free(old._allocationAddress);
- }
-
- void AlignedBuilder::_free(void *p) {
-#if defined(_WIN32)
- VirtualFree(p, 0, MEM_RELEASE);
-#else
- free(p);
-#endif
- }
-
- void AlignedBuilder::kill() {
- _free(_p._allocationAddress);
- _p._allocationAddress = 0;
- _p._data = 0;
- }
-
-}