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| author | Wei Li <sirius.liwei@huawei.com> | 2018-01-26 15:00:32 +0800 |
|---|---|---|
| committer | Jinguang Dong <dongjinguang@huawei.com> | 2018-01-26 17:01:55 +0800 |
| commit | 2cb5f7f578ec682c2bf628f29ffe21de8ccbc917 (patch) | |
| tree | 9628aa10b187d7d6abc5be6688df9daa2c36df8a /libc/include/android/api-level.h | |
| parent | 40517761dc7c69a704285e61a51bd3b76046fcdf (diff) | |
Move static variable out of should_trace().
Static variable initialization calls pthread_mutex_lock() and may lead to
deadlock if should_trace() is called in pthread_mutex_lock context.
Here is a stack of blocked init process:
__cxa_guard_acquire ->
should_trace ->
bionic_trace_begin ->
__pthread_mutex_lock_with_timeout ->
__cxa_guard_release ->
should_trace ->
bionic_trace_begin ->
__pthread_mutex_lock_with_timeout ->
mutex::lock ->
LogMessage::~LogMessage
......
So we need to move it out
Test: 1 Compiled and booted.
2 Reboot pressure test for more than 30000 times.
Change-Id: I8d97745161f1aa8942b63338208ea74830768ae1
Signed-off-by: Wei Li <sirius.liwei@huawei.com>
Signed-off-by: Jinguang Dong <dongjinguang@huawei.com>
Diffstat (limited to 'libc/include/android/api-level.h')
0 files changed, 0 insertions, 0 deletions