Originally, there are _rand48 (in libc/bionic/_rand48.c) and __rand48
(in libc/stdlib/_rand48.c) implemented in bionic. Besides the naming,
the functionality is identical. This patch removes the duplicated
_rand48. Also, drand48 and erand48 are modified accordingly.
Change-Id: Ie5761a0a97f45df8538222a77edacb7c3e0125d7
This change allows an executable to call its destructor functions
(declared with __attribute__((destructor))) to be properly called
when it normally exits.
Note that this is different from calling the destructors of a shared
library when it is unloaded with dlclose() or through program exit,
which are already supported.
Bug: 3106500
Change-Id: I1412ef5407f13b613fc6cb6103e0a691dbee4b1a
Merge commit 'ade2a92991d1c7edc32c4a300bd83d622fa1567d' into gingerbread-plus-aosp
* commit 'ade2a92991d1c7edc32c4a300bd83d622fa1567d':
bionic: stubs: Make internal symbol static
The get_malloc_leak_info() currently asssumes that the totalMemory out parameter
was pre-initialized to zero before the routine is called. If it is not then the
accumulated totalMemory value will be incorrect. It is likely that many callers
will simply allocate totalMemory on the stack with no initialization and assume
that get_malloc_leak_info will set the proper value.
As an example, the caller in frameworks/base/core/jni/android_os_Debug.cpp
calls get_malloc_leak_info() with the address uninitiazed stack variable
for totalMemory. It is probably best to fix this in get_malloc_leak_info.
Change-Id: I84c927c3781419585794726115b7d34d8fdd24ae
The implementation was using a double-checked locking approach that
could break on SMP.
In addition to the barriers I also switched to a volatile pointer. I
don't think this will matter unless gcc can conclude that _normal_lock
can't affect *once_control, but I figured it was better to be safe.
(It seems to have no impact whatsoever on the generated code.)
Bug 3022795.
Change-Id: Ib91da25d57ff5bee4288526e39d457153ef6aacd
Merge commit 'b9e49ad56e5776ace7c6eab2e997d5b7acb16792' into gingerbread-plus-aosp
* commit 'b9e49ad56e5776ace7c6eab2e997d5b7acb16792':
Use a recursive lock for pthread_once. DO NOT MERGE.
This adds an explicit memory barrier to condition variable signaling.
It's a little murky as to whether it's strictly required, but it seems
like a wise thing to do.
Change-Id: Id0faa542d61e4b8ffa775e4adf68e4d7471f4fb7
Previously, the malloc leak checking code would crash in qsort()
if null entries existed in its bookkeeping table. This change
makes the comparison function detect null entries and sort them
to the end safely.
Change-Id: I88244a7df1e289dd9d7992ce29606d505bd63079
This also allows us to optimize the case where we increment an
uncontended semaphore (no need to call futex_wake() then).
Change-Id: Iad48efe8551dc66dc89d3e3f18c001e5a6c1939f
With this patch _and_ an upcoming build/ patch, the destruction
of static C++ objects contained in shared libraries will happen
properly when dlclose() is called.
Note that this change introduces crtbegin_so.S and crtend_so.S which
are currently ignored by the build system.
+ move definition of __dso_handle to the right place
(before that, all shared libraries used the __dso_handle
global variable from the C library).
Note that we keep a 'weak' __dso_handle in aeabi.c to avoid
breaking the build until the next patch to build/core/combo/
appears. We will be able to remove that later.
+ move bionic/aeabi.c to arch-arm/bionic/ (its proper location)
NOTE: The NDK will need to be modified to enable this feature in
the shared libraries that are generated through it.
Change-Id: I99cd801375bbaef0581175893d1aa0943211b9bc
Also add missing declarations to misc. functions.
Fix clearerr() implementation (previous was broken).
Handle feature test macros like _POSIX_C_SOURCE properly.
Change-Id: Icdc973a6b9d550a166fc2545f727ea837fe800c4
With this patch, _and_ an upcoming build/ patch, the destruction
of static C++ objects contained in shared libraries will happen
properly when dlclose() is called.
Note that this change introduces crtbegin_so.S and crtend_so.S which
are currently ignored by the build system.
+ move definition of __dso_handle to the right place
(before that, all shared libraries used the __dso_handle
global variable from the C library).
Note that we keep a 'weak' __dso_handle in aeabi.c to avoid
breaking the build until the next patch to build/core/combo/
appears. We will be able to remove that later.
+ move bionic/aeabi.c to arch-arm/bionic/ (its proper location)
Change-Id: Ie771aa204e3acbdf02fd30ebd4150373a1398f39
NOTE: The NDK will need to be modified to enable this feature in
the shared libraries that are generated through it.
We simply copy the stuff we need from cutils headers.
A future patch will change cutils to include the private <bionic_atomic_inline.h>
Change-Id: Ib6fd9a03bc9e337ce867bd606dc94c2b4438480a
Update ARM atomic ops to use LDREX/STREX. Stripped out #if 0 chunk.
Insert explicit memory barriers in pthread and semaphore code.
For bug 2721865.
Change-Id: I0f153b797753a655702d8be41679273d1d5d6ae7
... so that each cloned process at the kernel level can be named
independently. Tools like 'top' can display the CPU/memory statistics
for each process's thread if "Show Threads" mode is on.
With this function in place, we can convert dalvik/Thread.c setThreadName()
function over this function. This feature ought to be provided by the
underlying C library and not coded directly in Dalvik.
Change-Id: Ifa997665dbaa114e0b126f8c667708be9a4137fd
Signed-off-by: André Goddard Rosa <andre.goddard@gmail.com>
Now that the system properly uses shared condvars when needed, we
can enable the use of private futexes for them too.
Change-Id: Icf8351fc0a2309f764cba45c65bc3af047720cdf
This does not change the implementation of conditional variables
since we're waiting for other system components to properly use
pthread_condattr_init/setpshared before that.
Also remove an obsolete x86 source file.
Change-Id: Ia3e3fbac35b87a534fb04d4381c3c66b975bc8f7
Note that this does not change the implementation of conditional variables
which still use shared futexes, independent on the flags being selected.
This will be fixed in a later patch, once our system is modified to use
pthread_condattr_setpshared(attr, PTHREAD_PROCESS_SHARED) properly.
Change-Id: I935de50964cd41f97a13dbfd6626d3407b0406c3
Private futexes are a recent kernel addition: faster futexes that cannot be
shared between processes. This patch uses them by default, unless the PROCESS_SHARED
attribute flag is used when creating a mutex and/or conditional variable.
Also introduces pthread_condattr_init/destroy/setpshared/getpshared.
Change-Id: I3a0e2116f467072b046524cb5babc00e41057a53
Any of the setuid functions now updates /acct/uid/ with its own tid
before changing users. This is so we can properly account for cpu time
per uid.
Change-Id: I34186cf4d5228cac8439e582a9e26c01ef3011e4
Signed-off-by: Mike Chan <mike@android.com>
Only provide an implementation for ARM at the moment, since
it requires specific assembly fragments (the standard syscall
stubs cannot be used because the child returns in a different
stack).
log_channel_t contains fd member, which is file descriptor for
exact logging channel. change cc05d12716
lacks initialization of this member in __write_to_log_init(), thus
logging code is not working, although not crashable.
Additional details may be found in comments here:
http://review.source.android.com/5617
The file descriptor wasn't getting set, so the writev() call was
silently failing.
There's a parallel implementation over in system/core/liblog, but it's
still using the old approach and didn't have this problem.
Merge commit '362b2aabee2dd04e04a3ad9c09f0ad0212569be4' into eclair-mr2-plus-aosp
* commit '362b2aabee2dd04e04a3ad9c09f0ad0212569be4':
Split libc_debug.so into two .so modules loaded on demand from libc.so
This change is intended to eliminate need to replace libc.so with libc_debug.so in order to enablememory allocation debugging.
This is also the first step towards implementing extended memoryallocation debugging using emulator's capabilities in monitoring memory access.
Merge commit 'bc10cd2900cdb7fed077163b6a33e0f8572b2b19' into eclair-plus-aosp
* commit 'bc10cd2900cdb7fed077163b6a33e0f8572b2b19':
Fix a typo that resulted in a crash in the boot sequence
This is used to perform a mutex lock for a given amount of
milliseconds before giving up. Using the _np prefix since this
is absolutely not portable.
Also remove a compiler warning in pthread_attr_getstackaddr
Main differences from original code:
1. now log channel for LOG_ID_MAIN may exist even if LOG_ID_RADIO
facility failed.
2. __write_to_log_null() now acts as always successful function.
3. it's more simplier to add new logging channels now
ammended commit fixes my typo on line 130
Some libc changes were preventing the initialization call from being made.
The basic problem appears to be that libc_init_common.c is only built once,
and it's only built for the non-debug libc.
