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Pthread_mutex_init Error Code 95

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Pthread_mutex_init Linux

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Pthread_mutex_init Attribute Example

Browse Valgrind, an open-source memory debugger Mailing Lists Valgrind, an open-source memory debugger Brought to you by: njn, sewardj Summary Files Reviews Support Wiki Mailing Lists Code valgrind-announce valgrind-developers valgrind-testresults valgrind-users valgrind-valkyrie-dev [Valgrind-developers] valgrind: r7077 - branches/THRCHECK/thrcheck/tests [Valgrind-developers] valgrind: r7077 - branches/THRCHECK/thrcheck/tests From: - 2007-11-01 17:59:50 Author: sewardj Date: 2007-11-01 17:59:40 +0000 (Thu, 01 Nov 2007) New Revision: 7077 Log: Update expected output following r7075. Modified: branches/THRCHECK/thrcheck/tests/tc20_verifywrap.stderr.exp-glibc25-amd64 Modified: branches/THRCHECK/thrcheck/tests/tc20_verifywrap.stderr.exp-glibc25-amd64 =================================================================== --- branches/THRCHECK/thrcheck/tests/tc20_verifywrap.stderr.exp-glibc25-amd64 2007-11-01 17:15:35 UTC (rev 7076) +++ branches/THRCHECK/thrcheck/tests/tc20_verifywrap.stderr.exp-glibc25-amd64 2007-11-01 17:59:40 UTC (rev 7077) @@ -1,5 +1,8 @@ + +------ This is output for >= glibc 2.4 ------ + ---------------- pthread_create/join ---------------- Thread #1 is the program's root thread @@ -9,10 +12,10 @@ by 0x........: ... by 0x........: pthread_create@... (in /lib/libpthread...) by 0x........: pthread_cre

const pthread_mutexattr_t *attr); int pthread_mutex_destroy(pthread_mutex_t *mutex); pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER; DESCRIPTION The pthread_mutex_init() function initialises the mutex referenced by mutex with attributes specified by attr. If attr is NULL, the default mutex attributes are used; the effect pthread_mutex_initializer example is the same as passing the address of a default mutex attributes object. pthread_mutexattr_t Upon successful initialisation, the state of the mutex becomes initialised and unlocked. Attempting to initialise an already initialised mutex results


in undefined behaviour. The pthread_mutex_destroy() function destroys the mutex object referenced by mutex; the mutex object becomes, in effect, uninitialised. An implementation may cause pthread_mutex_destroy() to set the object referenced by mutex to https://sourceforge.net/p/valgrind/mailman/message/16341153/ an invalid value. A destroyed mutex object can be re-initialised using pthread_mutex_init(); the results of otherwise referencing the object after it has been destroyed are undefined. It is safe to destroy an initialised mutex that is unlocked. Attempting to destroy a locked mutex results in undefined behaviour. In cases where default mutex attributes are appropriate, the macro PTHREAD_MUTEX_INITIALIZER can be used to initialise mutexes that http://pubs.opengroup.org/onlinepubs/7908799/xsh/pthread_mutex_init.html are statically allocated. The effect is equivalent to dynamic initialisation by a call to pthread_mutex_init() with parameter attr specified as NULL, except that no error checks are performed. RETURN VALUE If successful, the pthread_mutex_init() and pthread_mutex_destroy() functions return zero. Otherwise, an error number is returned to indicate the error. The [EBUSY] and [EINVAL] error checks, if implemented, act as if they were performed immediately at the beginning of processing for the function and cause an error return prior to modifying the state of the mutex specified by mutex. ERRORS The pthread_mutex_init() function will fail if: [EAGAIN] The system lacked the necessary resources (other than memory) to initialise another mutex. [ENOMEM] Insufficient memory exists to initialise the mutex. [EPERM] The caller does not have the privilege to perform the operation. The pthread_mutex_init() function may fail if: [EBUSY] The implementation has detected an attempt to re-initialise the object referenced by mutex, a previously initialised, but not yet destroyed, mutex. [EINVAL] The value specified by attr is invalid. The pthread_mutex_destroy() function may fail if: [EBUSY] The implementation has detected an attempt to destroy the object referenced by mutex while it is locked or referenced (for example, while

Sign in Pricing Blog Support Search GitHub This repository Watch 33 Star 153 Fork 25 REMath/implementations Code https://github.com/REMath/implementations/blob/master/avalanche/valgrind/helgrind/tests/tc20_verifywrap.stderr.exp-glibc25-x86 Issues 1 Pull requests 0 Projects 0 Pulse Graphs Permalink Branch: master Switch branches/tags Branches Tags gh-pages master Nothing to show Nothing to show Find file Copy path implementations/avalanche/valgrind/helgrind/tests/tc20_verifywrap.stderr.exp-glibc25-x86 Fetching contributors… Cannot retrieve contributors at this time Raw Blame History 158 lines (112 sloc) 5.57 KB ------ This is output for >= glibc pthread_mutex_init attribute 2.4 ------ ---------------- pthread_create/join ---------------- Thread #1 is the program's root thread Thread #2 was created at 0x........: clone (in /...libc...) by 0x........: pthread_create@GLIBC_ (in /lib/libpthread...) by 0x........: pthread_create@* (hg_intercepts.c:...) by 0x........: main (tc20_verifywrap.c:76) Possible data race during write of size 2 at 0x........ at 0x........: main (tc20_verifywrap.c:78) Old state: owned exclusively by thread pthread_mutex_init error code #2 New state: shared-modified by threads #1, #2 Reason: this thread, #1, holds no locks at all Location 0x........ is 0 bytes inside global var "unprotected" declared at tc20_verifywrap.c:27 Thread #1's call to pthread_join failed with error code 35 (EDEADLK: Resource deadlock would occur) at 0x........: pthread_join (hg_intercepts.c:...) by 0x........: main (tc20_verifywrap.c:83) ---------------- pthread_mutex_lock et al ---------------- Thread #1's call to pthread_mutex_init failed with error code 95 (EOPNOTSUPP: Operation not supported on transport endpoint) at 0x........: pthread_mutex_init (hg_intercepts.c:...) by 0x........: main (tc20_verifywrap.c:92) Thread #1: pthread_mutex_destroy of a locked mutex at 0x........: pthread_mutex_destroy (hg_intercepts.c:...) by 0x........: main (tc20_verifywrap.c:102) Thread #1's call to pthread_mutex_destroy failed with error code 16 (EBUSY: Device or resource busy) at 0x........: pthread_mutex_destroy (hg_intercepts.c:...) by 0x........: main (tc20_verifywrap.c:102) Thread #1's call to pthread_mutex_lock failed with error code 22 (EINVAL: Invalid argument) at 0x........: pthread_mutex_lock (hg_intercepts.c:...) by 0x........: main (tc20_verifywrap.c:108) Thread #1's call to pthread_mutex_trylock failed with error code 22 (EINVAL: Invalid argument) at 0x........: pthread_mutex_trylock


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