| 5bac60aaafca855f68e1f8b5527d4a4b7897f234 |
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15-Feb-2012 |
Iliyan Malchev <malchev@google.com> |
Replace large calloc() with ashmem-backed anonymous mmap
This change eliminates a large amount of memory duplication arising from the
use of a calloc() to initialize auxiliary data structures. Calloc() calls
memset() to zero out memory after it has been allocated. That memory may
either be gotten via an anonymous mmap (in which case the memset() is
unnecessary, as the kernel zeros out the memory before handing it to user
space), or it can get recycled by the heap (in which case the memset() is
necessary.)
This becomes a problem for large callocs in any case. In addition, when
initializing aux structures, we create a large sparse array for each DEX file.
The data in each array tends to remain mostly zeroed out, which leads to a lot
of duplicated zero pages.
By switching to anonymous mmaps() instead of calloc(), we keep the zeroed-out
pages together and minimize duplication.
Change-Id: Ic38b78e54acc782a863513a7b1972492e50e099c
Signed-off-by: Iliyan Malchev <malchev@google.com>
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| c1a4ab9c313d8a3d12007f2dbef7b5a6fa4ac2ef |
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06-Jan-2012 |
Steve Block <steveblock@google.com> |
Rename (IF_)LOGE(_IF) to (IF_)ALOGE(_IF) DO NOT MERGE
See https://android-git.corp.google.com/g/#/c/157220
Also fix an occurrence of LOGW missed in an earlier change.
Bug: 5449033
Change-Id: I2e3b23839e6dcd09015d6402280e9300c75e3406
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| 062bf509a77fce9dfcb7e7b2e401cf2a124d83d5 |
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20-Dec-2011 |
Steve Block <steveblock@google.com> |
Rename (IF_)LOGD(_IF) to (IF_)ALOGD(_IF) DO NOT MERGE
See https://android-git.corp.google.com/g/156016
Bug: 5449033
Change-Id: Ic663376d1ad6a6cb14bf81405ad9afd247cf2f60
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| 92c1f6f1b4249e4e379452ee7b49f027052bf4ce |
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20-Oct-2011 |
Steve Block <steveblock@google.com> |
Rename (IF_)LOGV(_IF) to (IF_)ALOGV(_IF) DO NOT MERGE
See https://android-git.corp.google.com/g/#/c/143865
Bug: 5449033
Change-Id: I8bd96961e369a08e86ff78b82d90f20f42787eb1
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| 60fc806b679a3655c228b4093058c59941a49cfe |
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26-May-2011 |
Dan Bornstein <danfuzz@android.com> |
Further conservation of newlines.
Friends don't let friends end LOG() strings with newlines.
Change-Id: I5a18c766c90c4ab5f03caa6acd601d34d91beb00
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| d5c36b9040bd26a81219a7f399513526f9b46324 |
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16-Apr-2011 |
Carl Shapiro <cshapiro@google.com> |
Move the remaining non-compiler VM code into C++.
Change-Id: Id8693208d2741c55a7b0474d1264f2112019d11f
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