Pthread_mutex_init Error Code 95

here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and pthread_mutex_init example policies of this site About Us Learn more about Stack Overflow the pthread_mutex_init linux company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users pthread_mutex_init attributes Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 6.2 million programmers, just like you, helping each other. Join them; it only takes pthread_mutex_init recursive a minute: Sign up pthread mutex_init returned error 95 up vote 0 down vote favorite I am trying to initialize the pthread_mutex_init with attribute my_attr. int settype_retValue=pthread_mutexattr_settype( &my_attr, PTHREAD_MUTEX_RECURSIVE); cout << " settype_retValue =0" << settype_retValue << endl; int nRet = pthread_mutex_init(&blist_mutex, &my_attr); if( nRet ) cout << " mutex_init returned " << nRet << endl; else cout << " mutex_init has

Pthread_mutex_init Attribute Example

initilised without any error\n; After compiling above set of code I am getting error as below and it is hanging over there. OUTPUT::==> settype_retValue =0 mutex_init returned 95 Can anyone please help to understand why I am getting return value for 95. What is significance of 95. I know that if mutex_init fails it gives one of the following error:: EINVAL The attribute set is not initialized EINVAL The specified protocol is invalid EAGAIN The system lacked the necessary resources to initialize another mutex. ENOMEM Insufficient memory exists to initialize the mutex. EBUSY Attempted to reinialize the object reference May know 95 refers to which one of the above or 95 means something other. And also how to do GDB debugging to go into the phterad library. Thanks in Advance c++ linux multithreading pthreads posix share|improve this question edited Nov 19 '13 at 12:01 asked Nov 19 '13 at 10:00 Pravin.2087 134 How are blist_mutex and settype_retValue defined ? –Claudio Nov 19 '13 at 10:11 1 On Linux, 95 is "EOPNOTSUPP" (not supported). Have you initialised my_attr correctly?

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

Pthread_mutex_initializer Example

mutex with attributes specified by attr. If attr is pthread_mutexattr_t NULL, the default mutex attributes are used; the effect is the same as passing pthread_cond_init the address of a default mutex attributes object. Upon successful initialisation, the state of the mutex becomes initialised and unlocked. Attempting to initialise http://stackoverflow.com/questions/20068406/pthread-mutex-init-returned-error-95 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 an invalid value. A destroyed mutex object can be http://pubs.opengroup.org/onlinepubs/7908799/xsh/pthread_mutex_init.html 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 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 s

Sign in Pricing Blog Support Search GitHub This repository Watch 33 https://github.com/REMath/implementations/blob/master/avalanche/valgrind/helgrind/tests/tc20_verifywrap.stderr.exp-glibc25-x86 Star 153 Fork 25 REMath/implementations Code Issues 1 Pull requests 0 Projects 0 Pulse Graphs Permalink Branch: master Switch branches/tags Branches Tags gh-pages https://searchcode.com/codesearch/view/40521929/ 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 pthread_mutex_init attribute 158 lines (112 sloc) 5.57 KB ------ This is output for >= glibc 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) pthread_mutex_init error code Possible data race during write of size 2 at 0x........ at 0x........: main (tc20_verifywrap.c:78) Old state: owned exclusively by thread #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

Language Expect Lines 239 MD5 Hash 9be087b5ed843a51e49618be2c3d86a2 Repository https://bitbucket.org/cyanogenmod/android_external_valgrind.git View Raw File Find Similar Files View File Tree 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235------ This is output for >= glibc 2.4 ------ ---------------- pthread_create/join ---------------- ---Thread-Announcement------------------------------------------ Thread #x is the program's root thread ---Thread-Announcement------------------------------------------ Thread #x was created ... by 0x........: pthread_create_WRK (hg_intercepts.c:...) by 0x........: pthread_create@* (hg_intercepts.c:...) by 0x........: main (tc20_verifywrap.c:76) ---------------------------------------------------------------- Possible data race during write of size 2 at 0x........ by thread #x Locks held: none at 0x........: main (tc20_verifywrap.c:78) This conflicts with a previous write of size 2 by thread #x Locks held: none at 0x........: racy_child (tc20_verifywrap.c:34) by 0x........: mythread_wrapper (hg_intercepts.c:...) ... Location 0x........ is 0 bytes inside global var "unprotected" declared at tc20_verifywrap.c:27 ---------------------------------------------------------------- Thread #x's call to pthread_join failed with error code 35 (EDEADLK: Resource