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bionic/libc/private/bionic_pthread.h

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Add non-NDK internal API __pthread_gettid Tracking bugs 5267571 and 5090073 (for deadlock detection logs). Change-Id: Icb90f91ec1525607551c2234ef921bf88296484f
2011-07-12 00:41:28 +02:00
/*
* Copyright (C) 2011 The Android Open Source Project
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef _BIONIC_PTHREAD_H
#define _BIONIC_PTHREAD_H
#include <sys/cdefs.h>
__BEGIN_DECLS
/* Internal, not an NDK API */
extern pid_t __pthread_gettid(pthread_t thid);
bionic: Fix wrong kernel_id in pthread descriptor after fork() After forking, the kernel_id field in the phtread_internal_t returned by pthread_self() is incorrect --- it's the tid from the parent, not the new tid of the child. The root cause is that: currently the kernel_id is set by _init_thread(), which is called in 2 cases: (1) called by __libc_init_common(). That happens when the execv( ) is called after fork( ). But when the zygote tries to fork the android application, the child application doesn't call execv( ), instread, it tries to call the Java main method directly. (2) called by pthread_create(). That happens when a new thread is created. For the lead thread which is the thread created by fork(), it should call execv() but it doesn't, as described in (1) above. So its kernel_id will inherit the parent's kernel_id. Fixed it in this patch. Change-Id: I63513e82af40ec5fe51fbb69456b1843e4bc0fc7 Signed-off-by: Chenyang Du <chenyang.du@intel.com> Signed-off-by: Jack Ren <jack.ren@intel.com> Signed-off-by: Bruce Beare <bruce.j.beare@intel.com>
2012-01-17 09:27:42 +01:00
extern int __pthread_settid(pthread_t thid, pid_t tid);
Add non-NDK internal API __pthread_gettid Tracking bugs 5267571 and 5090073 (for deadlock detection logs). Change-Id: Icb90f91ec1525607551c2234ef921bf88296484f
2011-07-12 00:41:28 +02:00
__END_DECLS
#endif /* _BIONIC_PTHREAD_H */
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