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2002-09-21 Robert Collins <rbtcollins@hotmail.com> 

* thread.cc: Change verifyable_object_isvalid calls with
        PTHREAD_CONDATTR_MAGIC, PTHREAD_MUTEXATTR_MAGIC, PTHREAD_COND_MAGIC,
        SEM_MAGIC to objecttype::isGoodObject() calls throughout.
        (pthread_condattr::isGoodObject): Implement.
        (pthread_mutex::isGoodInitializer): Implement.
        (pthread_mutex::isGoodInitializerOrObject): Minor bugfix in the
        check for verifyable_object_isvalid result.
        (pthread_mutexattr::isGoodObject): Implement.
        (pthread_cond::isGoodObject): Ditto.
        (pthread_cond::isGoodInitializer): Ditto.
        (pthread_cond::isGoodInitializerOrObject): Ditto.
        (semaphore::isGoodObject): Ditto.
        * thread.h (pthread_mutex::isGoodInitializer): Declare.
        (pthread_condattr::isGoodObject): Ditto.
        (pthread_cond::isGoodObject): Const correctness.
        (pthread_cond::isGoodInitializer): Declare.
        (pthread_cond::isGoodInitializerOrObject): Ditto.
        (semaphore::isGoodObject): Const correctness.
This commit is contained in:
Robert Collins 2002-09-20 23:46:12 +00:00
parent 4e2822f160
commit 8b1978c30c
3 changed files with 134 additions and 47 deletions
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21
winsup/cygwin/ChangeLog
View File

@ -1,3 +1,24 @@
2002-09-21 Robert Collins <rbtcollins@hotmail.com>
* thread.cc: Change verifyable_object_isvalid calls with
PTHREAD_CONDATTR_MAGIC, PTHREAD_MUTEXATTR_MAGIC, PTHREAD_COND_MAGIC,
SEM_MAGIC to objecttype::isGoodObject() calls throughout.
(pthread_condattr::isGoodObject): Implement.
(pthread_mutex::isGoodInitializer): Implement.
(pthread_mutex::isGoodInitializerOrObject): Minor bugfix in the
check for verifyable_object_isvalid result.
(pthread_mutexattr::isGoodObject): Implement.
(pthread_cond::isGoodObject): Ditto.
(pthread_cond::isGoodInitializer): Ditto.
(pthread_cond::isGoodInitializerOrObject): Ditto.
(semaphore::isGoodObject): Ditto.
* thread.h (pthread_mutex::isGoodInitializer): Declare.
(pthread_condattr::isGoodObject): Ditto.
(pthread_cond::isGoodObject): Const correctness.
(pthread_cond::isGoodInitializer): Declare.
(pthread_cond::isGoodInitializerOrObject): Ditto.
(semaphore::isGoodObject): Const correctness.
2002-09-21 Robert Collins <rbtcollins@hotmail.com>
* thread.cc: Change verifyable_object_isvalid calls with

151
winsup/cygwin/thread.cc
View File

@ -822,6 +822,14 @@ pthread_attr::~pthread_attr ()
{
}
bool
pthread_condattr::isGoodObject (pthread_condattr_t const *attr)
{
if (verifyable_object_isvalid (attr, PTHREAD_CONDATTR_MAGIC) != VALID_OBJECT)
return false;
return true;
}
pthread_condattr::pthread_condattr ():verifyable_object
(PTHREAD_CONDATTR_MAGIC), shared (PTHREAD_PROCESS_PRIVATE)
{
@ -1139,17 +1147,25 @@ pthread_key::recreateKeyFromBuffer ()
/* static members */
bool
pthread_mutex::isGoodObject (pthread_mutex_t const *thread)
pthread_mutex::isGoodObject (pthread_mutex_t const *mutex)
{
if (verifyable_object_isvalid (thread, PTHREAD_MUTEX_MAGIC) != VALID_OBJECT)
if (verifyable_object_isvalid (mutex, PTHREAD_MUTEX_MAGIC) != VALID_OBJECT)
return false;
return true;
}
bool
pthread_mutex::isGoodInitializerOrObject (pthread_mutex_t const *thread)
pthread_mutex::isGoodInitializer (pthread_mutex_t const *mutex)
{
if (verifyable_object_isvalid (thread, PTHREAD_MUTEX_MAGIC, PTHREAD_MUTEX_INITIALIZER) != VALID_OBJECT)
if (verifyable_object_isvalid (mutex, PTHREAD_MUTEX_MAGIC, PTHREAD_MUTEX_INITIALIZER) != VALID_STATIC_OBJECT)
return false;
return true;
}
bool
pthread_mutex::isGoodInitializerOrObject (pthread_mutex_t const *mutex)
{
if (verifyable_object_isvalid (mutex, PTHREAD_MUTEX_MAGIC, PTHREAD_MUTEX_INITIALIZER) == INVALID_OBJECT)
return false;
return true;
}
@ -1257,6 +1273,14 @@ pthread_mutex::fixup_after_fork ()
#endif
}
bool
pthread_mutexattr::isGoodObject (pthread_mutexattr_t const * attr)
{
if (verifyable_object_isvalid (attr, PTHREAD_MUTEXATTR_MAGIC) != VALID_OBJECT)
return false;
return true;
}
pthread_mutexattr::pthread_mutexattr ():verifyable_object (PTHREAD_MUTEXATTR_MAGIC),
pshared (PTHREAD_PROCESS_PRIVATE), mutextype (PTHREAD_MUTEX_DEFAULT)
{
@ -1986,13 +2010,36 @@ __pthread_getspecific (pthread_key_t key)
}
/*Thread synchronisation */
bool
pthread_cond::isGoodObject (pthread_cond_t const *cond)
{
if (verifyable_object_isvalid (cond, PTHREAD_COND_MAGIC) != VALID_OBJECT)
return false;
return true;
}
bool
pthread_cond::isGoodInitializer (pthread_cond_t const *cond)
{
if (verifyable_object_isvalid (cond, PTHREAD_COND_MAGIC, PTHREAD_COND_INITIALIZER) != VALID_STATIC_OBJECT)
return false;
return true;
}
bool
pthread_cond::isGoodInitializerOrObject (pthread_cond_t const *cond)
{
if (verifyable_object_isvalid (cond, PTHREAD_COND_MAGIC, PTHREAD_COND_INITIALIZER) == INVALID_OBJECT)
return false;
return true;
}
int
__pthread_cond_destroy (pthread_cond_t *cond)
{
if (check_valid_pointer (cond) && (*cond == PTHREAD_COND_INITIALIZER))
if (pthread_cond::isGoodInitializer (cond))
return 0;
if (verifyable_object_isvalid (cond, PTHREAD_COND_MAGIC) != VALID_OBJECT)
if (!pthread_cond::isGoodObject (cond))
return EINVAL;
/*reads are atomic */
@ -2008,15 +2055,15 @@ __pthread_cond_destroy (pthread_cond_t *cond)
int
__pthread_cond_init (pthread_cond_t *cond, const pthread_condattr_t *attr)
{
if (attr && verifyable_object_isvalid (attr, PTHREAD_CONDATTR_MAGIC) != VALID_OBJECT)
if (attr && !pthread_condattr::isGoodObject (attr))
return EINVAL;
if (verifyable_object_isvalid (cond, PTHREAD_COND_MAGIC, PTHREAD_COND_INITIALIZER) == VALID_OBJECT)
if (pthread_cond::isGoodObject (cond))
return EBUSY;
*cond = new pthread_cond (attr ? (*attr) : NULL);
if (verifyable_object_isvalid (cond, PTHREAD_COND_MAGIC) != VALID_OBJECT)
if (!pthread_cond::isGoodObject (cond))
{
delete (*cond);
*cond = NULL;
@ -2029,9 +2076,9 @@ __pthread_cond_init (pthread_cond_t *cond, const pthread_condattr_t *attr)
int
__pthread_cond_broadcast (pthread_cond_t *cond)
{
if (*cond == PTHREAD_COND_INITIALIZER)
if (pthread_cond::isGoodInitializer (cond))
__pthread_cond_init (cond, NULL);
if (verifyable_object_isvalid (cond, PTHREAD_COND_MAGIC) != VALID_OBJECT)
if (!pthread_cond::isGoodObject (cond))
return EINVAL;
(*cond)->BroadCast ();
@ -2042,9 +2089,9 @@ __pthread_cond_broadcast (pthread_cond_t *cond)
int
__pthread_cond_signal (pthread_cond_t *cond)
{
if (*cond == PTHREAD_COND_INITIALIZER)
if (pthread_cond::isGoodInitializer (cond))
__pthread_cond_init (cond, NULL);
if (verifyable_object_isvalid (cond, PTHREAD_COND_MAGIC) != VALID_OBJECT)
if (!pthread_cond::isGoodObject (cond))
return EINVAL;
(*cond)->Signal ();
@ -2063,12 +2110,12 @@ __pthread_cond_dowait (pthread_cond_t *cond, pthread_mutex_t *mutex,
if (*mutex == PTHREAD_MUTEX_INITIALIZER)
__pthread_mutex_init (mutex, NULL);
themutex = mutex;
if (*cond == PTHREAD_COND_INITIALIZER)
if (pthread_cond::isGoodInitializer (cond))
__pthread_cond_init (cond, NULL);
if (!pthread_mutex::isGoodObject (themutex))
return EINVAL;
if (verifyable_object_isvalid (cond, PTHREAD_COND_MAGIC) != VALID_OBJECT)
if (!pthread_cond::isGoodObject (cond))
return EINVAL;
/*if the cond variable is blocked, then the above timer test maybe wrong. *shrug**/
@ -2135,8 +2182,9 @@ pthread_cond_wait (pthread_cond_t *cond, pthread_mutex_t *mutex)
int
__pthread_condattr_init (pthread_condattr_t *condattr)
{
/* FIXME: we dereference blindly! */
*condattr = new pthread_condattr;
if (verifyable_object_isvalid (condattr, PTHREAD_CONDATTR_MAGIC) != VALID_OBJECT)
if (!pthread_condattr::isGoodObject (condattr))
{
delete (*condattr);
*condattr = NULL;
@ -2148,7 +2196,7 @@ __pthread_condattr_init (pthread_condattr_t *condattr)
int
__pthread_condattr_getpshared (const pthread_condattr_t *attr, int *pshared)
{
if (verifyable_object_isvalid (attr, PTHREAD_CONDATTR_MAGIC) != VALID_OBJECT)
if (!pthread_condattr::isGoodObject (attr))
return EINVAL;
*pshared = (*attr)->shared;
return 0;
@ -2157,7 +2205,7 @@ __pthread_condattr_getpshared (const pthread_condattr_t *attr, int *pshared)
int
__pthread_condattr_setpshared (pthread_condattr_t *attr, int pshared)
{
if (verifyable_object_isvalid (attr, PTHREAD_CONDATTR_MAGIC) != VALID_OBJECT)
if (!pthread_condattr::isGoodObject (attr))
return EINVAL;
if ((pshared < 0) || (pshared > 1))
return EINVAL;
@ -2171,7 +2219,7 @@ __pthread_condattr_setpshared (pthread_condattr_t *attr, int pshared)
int
__pthread_condattr_destroy (pthread_condattr_t *condattr)
{
if (verifyable_object_isvalid (condattr, PTHREAD_CONDATTR_MAGIC) != VALID_OBJECT)
if (!pthread_condattr::isGoodObject (condattr))
return EINVAL;
delete (*condattr);
*condattr = NULL;
@ -2238,10 +2286,11 @@ int
__pthread_mutex_init (pthread_mutex_t *mutex,
const pthread_mutexattr_t *attr)
{
if (attr && verifyable_object_isvalid (attr, PTHREAD_MUTEXATTR_MAGIC) != VALID_OBJECT || check_valid_pointer (mutex))
if (attr && !pthread_mutexattr::isGoodObject (attr) || check_valid_pointer (mutex))
return EINVAL;
if (pthread_mutex::isGoodInitializerOrObject (mutex))
/* FIXME: bugfix: we should check *mutex being a valid address */
if (pthread_mutex::isGoodObject (mutex))
return EBUSY;
*mutex = new pthread_mutex (attr ? (*attr) : NULL);
@ -2259,7 +2308,7 @@ __pthread_mutex_getprioceiling (const pthread_mutex_t *mutex,
int *prioceiling)
{
pthread_mutex_t *themutex = (pthread_mutex_t *) mutex;
if (*mutex == PTHREAD_MUTEX_INITIALIZER)
if (pthread_mutex::isGoodInitializer (mutex))
__pthread_mutex_init ((pthread_mutex_t *) mutex, NULL);
if (!pthread_mutex::isGoodObject (themutex))
return EINVAL;
@ -2278,13 +2327,17 @@ int
__pthread_mutex_lock (pthread_mutex_t *mutex)
{
pthread_mutex_t *themutex = mutex;
/* This could be simplified via isGoodInitializerOrObject
and isGoodInitializer, but in a performance critical call like this....
no.
*/
switch (verifyable_object_isvalid (themutex, PTHREAD_MUTEX_MAGIC, PTHREAD_MUTEX_INITIALIZER))
{
case INVALID_OBJECT:
return EINVAL;
break;
case VALID_STATIC_OBJECT:
if (*mutex == PTHREAD_MUTEX_INITIALIZER)
if (pthread_mutex::isGoodInitializer (mutex))
{
int rv = __pthread_mutex_init (mutex, NULL);
if (rv)
@ -2302,7 +2355,7 @@ int
__pthread_mutex_trylock (pthread_mutex_t *mutex)
{
pthread_mutex_t *themutex = mutex;
if (*mutex == PTHREAD_MUTEX_INITIALIZER)
if (pthread_mutex::isGoodInitializer (mutex))
__pthread_mutex_init (mutex, NULL);
if (!pthread_mutex::isGoodObject (themutex))
return EINVAL;
@ -2314,7 +2367,7 @@ __pthread_mutex_trylock (pthread_mutex_t *mutex)
int
__pthread_mutex_unlock (pthread_mutex_t *mutex)
{
if (*mutex == PTHREAD_MUTEX_INITIALIZER)
if (pthread_mutex::isGoodInitializer (mutex))
__pthread_mutex_init (mutex, NULL);
if (!pthread_mutex::isGoodObject (mutex))
return EINVAL;
@ -2325,7 +2378,7 @@ __pthread_mutex_unlock (pthread_mutex_t *mutex)
int
__pthread_mutex_destroy (pthread_mutex_t *mutex)
{
if (check_valid_pointer (mutex) && (*mutex == PTHREAD_MUTEX_INITIALIZER))
if (pthread_mutex::isGoodInitializer (mutex))
return 0;
if (!pthread_mutex::isGoodObject (mutex))
return EINVAL;
@ -2344,7 +2397,7 @@ __pthread_mutex_setprioceiling (pthread_mutex_t *mutex, int prioceiling,
int *old_ceiling)
{
pthread_mutex_t *themutex = mutex;
if (*mutex == PTHREAD_MUTEX_INITIALIZER)
if (pthread_mutex::isGoodInitializer (mutex))
__pthread_mutex_init (mutex, NULL);
if (!pthread_mutex::isGoodObject (themutex))
return EINVAL;
@ -2357,7 +2410,7 @@ int
__pthread_mutexattr_getprotocol (const pthread_mutexattr_t *attr,
int *protocol)
{
if (verifyable_object_isvalid (attr, PTHREAD_MUTEXATTR_MAGIC) != VALID_OBJECT)
if (!pthread_mutexattr::isGoodObject (attr))
return EINVAL;
return ENOSYS;
}
@ -2366,7 +2419,7 @@ int
__pthread_mutexattr_getpshared (const pthread_mutexattr_t *attr,
int *pshared)
{
if (verifyable_object_isvalid (attr, PTHREAD_MUTEXATTR_MAGIC) != VALID_OBJECT)
if (!pthread_mutexattr::isGoodObject (attr))
return EINVAL;
*pshared = (*attr)->pshared;
return 0;
@ -2379,7 +2432,7 @@ __pthread_mutexattr_getpshared (const pthread_mutexattr_t *attr,
int
__pthread_mutexattr_gettype (const pthread_mutexattr_t *attr, int *type)
{
if (verifyable_object_isvalid (attr, PTHREAD_MUTEXATTR_MAGIC) != VALID_OBJECT)
if (!pthread_mutexattr::isGoodObject (attr))
return EINVAL;
*type = (*attr)->mutextype;
return 0;
@ -2393,11 +2446,11 @@ __pthread_mutexattr_gettype (const pthread_mutexattr_t *attr, int *type)
int
__pthread_mutexattr_init (pthread_mutexattr_t *attr)
{
if (verifyable_object_isvalid (attr, PTHREAD_MUTEXATTR_MAGIC) != INVALID_OBJECT)
if (pthread_mutexattr::isGoodObject (attr))
return EBUSY;
*attr = new pthread_mutexattr ();
if (verifyable_object_isvalid (attr, PTHREAD_MUTEXATTR_MAGIC) != VALID_OBJECT)
if (!pthread_mutexattr::isGoodObject (attr))
{
delete (*attr);
*attr = NULL;
@ -2409,7 +2462,7 @@ __pthread_mutexattr_init (pthread_mutexattr_t *attr)
int
__pthread_mutexattr_destroy (pthread_mutexattr_t *attr)
{
if (verifyable_object_isvalid (attr, PTHREAD_MUTEXATTR_MAGIC) != VALID_OBJECT)
if (!pthread_mutexattr::isGoodObject (attr))
return EINVAL;
delete (*attr);
*attr = NULL;
@ -2421,7 +2474,7 @@ __pthread_mutexattr_destroy (pthread_mutexattr_t *attr)
int
__pthread_mutexattr_setprotocol (pthread_mutexattr_t *attr, int protocol)
{
if (verifyable_object_isvalid (attr, PTHREAD_MUTEXATTR_MAGIC) != VALID_OBJECT)
if (!pthread_mutexattr::isGoodObject (attr))
return EINVAL;
return ENOSYS;
}
@ -2431,7 +2484,7 @@ int
__pthread_mutexattr_setprioceiling (pthread_mutexattr_t *attr,
int prioceiling)
{
if (verifyable_object_isvalid (attr, PTHREAD_MUTEXATTR_MAGIC) != VALID_OBJECT)
if (!pthread_mutexattr::isGoodObject (attr))
return EINVAL;
return ENOSYS;
}
@ -2440,7 +2493,7 @@ int
__pthread_mutexattr_getprioceiling (const pthread_mutexattr_t *attr,
int *prioceiling)
{
if (verifyable_object_isvalid (attr, PTHREAD_MUTEXATTR_MAGIC) != VALID_OBJECT)
if (!pthread_mutexattr::isGoodObject (attr))
return EINVAL;
return ENOSYS;
}
@ -2448,7 +2501,7 @@ __pthread_mutexattr_getprioceiling (const pthread_mutexattr_t *attr,
int
__pthread_mutexattr_setpshared (pthread_mutexattr_t *attr, int pshared)
{
if (verifyable_object_isvalid (attr, PTHREAD_MUTEXATTR_MAGIC) != VALID_OBJECT)
if (!pthread_mutexattr::isGoodObject (attr))
return EINVAL;
/*we don't use pshared for anything as yet. We need to test PROCESS_SHARED
*functionality
@ -2463,7 +2516,7 @@ __pthread_mutexattr_setpshared (pthread_mutexattr_t *attr, int pshared)
int
__pthread_mutexattr_settype (pthread_mutexattr_t *attr, int type)
{
if (verifyable_object_isvalid (attr, PTHREAD_MUTEXATTR_MAGIC) != VALID_OBJECT)
if (!pthread_mutexattr::isGoodObject (attr))
return EINVAL;
if (type != PTHREAD_MUTEX_RECURSIVE)
return EINVAL;
@ -2472,11 +2525,21 @@ __pthread_mutexattr_settype (pthread_mutexattr_t *attr, int type)
}
/*Semaphores */
/* static members */
bool
semaphore::isGoodObject (sem_t const * sem)
{
if (verifyable_object_isvalid (sem, SEM_MAGIC) != VALID_OBJECT)
return false;
return true;
}
int
__sem_init (sem_t *sem, int pshared, unsigned int value)
{
/*opengroup calls this undefined */
if (verifyable_object_isvalid (sem, SEM_MAGIC) != INVALID_OBJECT)
if (semaphore::isGoodObject (sem))
return EBUSY;
if (value > SEM_VALUE_MAX)
@ -2484,7 +2547,7 @@ __sem_init (sem_t *sem, int pshared, unsigned int value)
*sem = new semaphore (pshared, value);
if (verifyable_object_isvalid (sem, SEM_MAGIC) != VALID_OBJECT)
if (!semaphore::isGoodObject (sem))
{
delete (*sem);
*sem = NULL;
@ -2496,7 +2559,7 @@ __sem_init (sem_t *sem, int pshared, unsigned int value)
int
__sem_destroy (sem_t *sem)
{
if (verifyable_object_isvalid (sem, SEM_MAGIC) != VALID_OBJECT)
if (!semaphore::isGoodObject (sem))
return EINVAL;
/*FIXME - new feature - test for busy against threads... */
@ -2509,7 +2572,7 @@ __sem_destroy (sem_t *sem)
int
__sem_wait (sem_t *sem)
{
if (verifyable_object_isvalid (sem, SEM_MAGIC) != VALID_OBJECT)
if (!semaphore::isGoodObject (sem))
{
set_errno (EINVAL);
return -1;
@ -2522,7 +2585,7 @@ __sem_wait (sem_t *sem)
int
__sem_trywait (sem_t *sem)
{
if (verifyable_object_isvalid (sem, SEM_MAGIC) != VALID_OBJECT)
if (!semaphore::isGoodObject (sem))
{
set_errno (EINVAL);
return -1;
@ -2534,7 +2597,7 @@ __sem_trywait (sem_t *sem)
int
__sem_post (sem_t *sem)
{
if (verifyable_object_isvalid (sem, SEM_MAGIC) != VALID_OBJECT)
if (!semaphore::isGoodObject (sem))
return EINVAL;
(*sem)->Post ();

9
winsup/cygwin/thread.h
View File

@ -254,6 +254,7 @@ class pthread_mutex:public verifyable_object
{
public:
static bool isGoodObject(pthread_mutex_t const *);
static bool isGoodInitializer(pthread_mutex_t const *);
static bool isGoodInitializerOrObject(pthread_mutex_t const *);
CRITICAL_SECTION criticalsection;
HANDLE win32_obj_id;
@ -361,7 +362,7 @@ class pthreadNull : public pthread
class pthread_condattr:public verifyable_object
{
public:
static bool isGoodObject(pthread_condattr_t *);
static bool isGoodObject(pthread_condattr_t const *);
int shared;
pthread_condattr ();
@ -371,7 +372,9 @@ public:
class pthread_cond:public verifyable_object
{
public:
static bool isGoodObject(pthread_cond_t *);
static bool isGoodObject(pthread_cond_t const *);
static bool isGoodInitializer(pthread_cond_t const *);
static bool isGoodInitializerOrObject(pthread_cond_t const *);
int shared;
LONG waiting;
LONG ExitingWait;
@ -400,7 +403,7 @@ public:
class semaphore:public verifyable_object
{
public:
static bool isGoodObject(semaphore **);
static bool isGoodObject(sem_t const *);
HANDLE win32_obj_id;
class semaphore * next;
int shared;