When forking of a new process in bionic, it is critical that it
does not allocate any memory according to the comment in
java_lang_ProcessManager.c:
"Note: We cannot malloc() or free() after this point!
A no-longer-running thread may be holding on to the heap lock, and
an attempt to malloc() or free() would result in deadlock."
However, as fork is using standard lib calls when tracing it a bit,
they might allocate memory, and thus causing the deadlock.
This is a rewrite so that the function cpuacct_add, that fork calls,
will use system calls instead of standard lib calls.
Signed-off-by: christian bejram <christian.bejram@stericsson.com>
Change-Id: Iff22ea6b424ce9f9bf0ac8e9c76593f689e0cc86
Pass kernel space sigset_t size to __rt_sigprocmask to workaround
the miss-match of NSIG/sigset_t definition between kernel and bionic.
Note: Patch originally from Google...
Change-Id: I4840fdc56d0b90d7ce2334250f04a84caffcba2a
Signed-off-by: Chenyang Du <chenyang.du@intel.com>
Signed-off-by: Bruce Beare <bruce.j.beare@intel.com>
Chars are signed for x86 -- correct the comparison semantics.
Change-Id: I2049e98eb063c0b4e83ea973d3fcae49c6817dde
Author: Liubov Dmitrieva <liubov.dmitrieva@intel.com>
Signed-off-by: Bruce Beare <bruce.j.beare@intel.com>
Fix the compile warning to let the libc.debug.malloc=10 works well
Due to unsuitable value comparison, which cause compiler optimize the
code of comparing two digits.
Change-Id: I0bedd596c9ca2ba308fb008da20ecb328d8548f5
Signed-off-by: Bruce Beare <bruce.j.beare@intel.com>
Author: liu chuansheng <chuansheng.liu@intel.com>
(1) in pthread_create:
If the one signal is received before esp is subtracted by 16 and
__thread_entry( ) is called, the stack will be cleared by kernel
when it tries to contruct the signal stack frame. That will cause
that __thread_entry will get a wrong tls pointer from the stack
which leads to the segment fault when trying to access tls content.
(2) in pthread_exit
After pthread_exit called system call unmap(), its stack will be
freed. If one signal is received at that time, there is no stack
available for it.
Fixed by subtracting the child's esp by 16 before the clone system
call and by blocking signal handling before pthread_exit is started.
Author: Jack Ren <jack.ren@intel.com>
Signed-off-by: Bruce Beare <bruce.j.beare@intel.com>
When running the stress test of pthread create/destroy, a crash may
oocur in __get_tls(). That is caused by the race condition with __set_tls( ):
Author: Jack Ren <jack.ren@intel.com>
Signed-off-by: Bruce Beare <bruce.j.beare@intel.com>
AI_ADDRCONFIG is currently implemented by trying to connect
to well-known addresses in order to see if IPv4 and/or IPv6
connectivity is available.
In some cases (e.g., walled gardens with no global
connectivity) both probes can fail. If this happens,
query for both IPv4 and IPv6 addresses instead of doing
nothing and failing the query.
Bug: 5284168
Change-Id: I4e3a69ea86fb6d839a6bd31236b98da81e5cbf45
Change Ife82a8d8 broke IPv6 on wifi. Change I4e3a69ea is
an alternate approach that does not require any framework
changes.
Bug: 5284168
Change-Id: Ib52614be3875a2ae2eaedd1be265f90e506eda41
Instead of checking for IPv4 or IPv6 connectivity, try using pid-specific
hints the framework has left for us.
bug:5284168
Change-Id: Id64d48db3900865a7d58ada8309870c63d6eab12
vfork() would not save the registers that the parent would expect
to have restored after execl() completed.
Specially that execl() would call execve() underneath, further messing
up the stack of the parent.
To avoid that, we fork() for now. Later we will revisit and cleanup
vfork()+execve() to actually have vfork() store all the register
that the parent expects to see, and not those left by execve().
In the original code, looking at the registers just before the call to
popen(), and after the call showed that r7 would get clobbered.
This would leave the caller with an invalid pointer, leading to all
kinds of data corruptions.
execve() is simpler that execl() in this case.
Bug: 5336252
Change-Id: I3bf718c0bb4c0439f6f2753f153cdea14175be9c
This patch ensure that __aeabi_f2uiz is embedded in our C library.
This is needed to avoid breaking certain applications when they are
loaded in ICS. It is likely that the issue is due to mis-linked
binaries generated with the stand-alone toolchain (the problem
should not exist if you use ndk-build), but this fix is easier
than asking all app developers to fix their custom build system.
If you want more technical details, read the comments inside
libgcc_compat.c
Change-Id: I59ac1fc781ecb70b90b5573c5a3c67560ca8f270
This patch changes the declaration of size_t on x86 targets
to test for the __ANDROID__ macro, instead of ANDROID
__ANDROID__ should be a builting toolchain macro, while ANDROID
is usually added manually during the build.
Testing against __ANDROID__ allows us to use the header when
using the NDK's standalone x86 toolchain.
This is related to http://code.google.com/p/android/issues/detail?id=19011
The bug was already fixed in the NDK platform headers, this simply updates
the C library one accordingly.
Change-Id: Ie038c4c8b37b7d24e2e4ae4d7a63371b69c9a51e
