The check added to each non-object reads adds an overhead. If the
objects (binders and file descriptors) were written to the Parcel in
sequential order then check adds a small O(1) overhead to each read,
plus an O(N) overhead to the first read (to verify the N objects were
added in order).
If the objects were written out of order (as in by jumping around the
Parcel
with setDataPosition and writing Binder, DON'T DO THIS!!) (writing non
objects out of order is fine), the first read is forced to sort the
objects
in the internal bookkeeping. Based on the assumption non sequential
writes
are infrequent and overall Parcels are probably mostly sorted, insertion
sort was used. Worst case sorts will add an O(N^2) overhead to the first
non object read from the Parcel.
Test: run cts -m CtsOsTestCases -t android.os.cts.ParcelTest
Bug: 29833520
Change-Id: I82de8eb5f5eb56f869542d5358e96884c24301b2
(cherry picked from commit c517681c66a1a387be657e0cf06da8d19659dd14)
The addition of ashmem size tracking can lead to parcel objects
overwriting other values on the stack in old binary blobs.
Change-Id: Ife8514be1ba639c4061de38b59794c46bcc2d7f8
The addition of ashmem size tracking can lead to parcel objects
overwriting other values on the stack in old binary blobs.
Change-Id: Ida52cec851a6f9d5a57c8f9130a5875c03dcb094
Makes sure we don't change the memory layout of the Parcel class
to maintain binary compatibility with prebuilts linking against
libbinder.
Bug: 25004154
Change-Id: I656687497f08bb85cefda796aafa2341e601e30a
Add functions to allow a client to take over the ashmem region
that was transferred so that it can claim it for its own and
reuse it.
Add support for mutable ashmem regions too.
Bug: 21428802
Change-Id: I16eca338cdb99b07d81fc43573d53ce86dbc60c8
Attempts to replicate Java parceling in native code is fraught with
peril.
Change-Id: I4359036c5dddd1b886d886beef1d060523e53e5f
(cherry picked from commit f47a381001)
Will be used by the system_server watchdog to monitor the
availability of binder threads in the process to handle
incoming IPC requests.
Bug: 19297165
Change-Id: I39175f3869ad14da5620fddb47f454e6e4ee2b25
Adds readUint32 and writeUint32 methods to the Parcel class. This
saves a lot of static_casting in anything implementing a Binder
interface on the native side.
Change-Id: Iafc73b0633654a3a4c49767f41806b56906c924f
so we can do NULL checks again, and update calls to IInterface::asBinder()
to use the new static version.
Change-Id: Ia7b10eb38ca55b72278bfd33d3bf647f338b4e6a
After fixing b/16874785.
This reverts commit f010a05c7e.
Original comment, which actually describes the effect of this:
Change the mExtras field in Binder.h to be a stdatomic.h atomic
value, and replace references to it with proper stdatomic.h calls.
This removes one of a small number of remaining 64 bit
android_atomic references. It also replaces the erroneously
non-atomic read accesses to mExtras.
It would be better if this used the C++11 <atomic> facility,
but we don't quite have that yet.
Fixes
Bug:16513433
Change-Id: I1645ca5d6f60595bf5d388913665ce4b8780b26d
(cherry picked from commit 3effababf2)
Change the mExtras field in Binder.h to be a stdatomic.h atomic
value, and replace references to it with proper stdatomic.h calls.
This removes one of a small number of remaining 64 bit
android_atomic references. It also replaces the erroneously
non-atomic read accesses to mExtras.
It would be better if this used the C++11 <atomic> facility,
but we don't quite have that yet.
Bug: 16513433
Change-Id: Ibabb88d05025187ee1ce6c7f1aa670b133a547f8
All uses of this API have been removed. It should
never have been made public in the first place.
bug: 15424960
Change-Id: Id07d24ec95b2b393e6da138a7e8a9a4ecebeca94
All uses of this API have been removed. It should
never have been made public in the first place.
bug: 15424960
(cherry picked from commit 7da40c0a84)
Change-Id: I8d89f62dbdaee7149ef908e0c97417b85e0c48a2
These weren't really being used and they make it
very hard to reason about who looks at command line
arguments.
Processes started via app_process (this includes all
zygote forks and the system_server) can get information
about command line arguments from the AndroidRuntime
class, which is available via a call to
AndroidRuntime::getRuntime.
bug: 13647418
Change-Id: I6f92680c3619a68c6d4b0995db4cdc9adc788e36
