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* include/sys/strace.h: Define _STRACE_SPECIAL.

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(strace_printf_wrap): Fix NOSTRACE definitions.
(strace_printf_wrap1): Fix NOSTRACE definitions.
(special_printf): Define.
* thread.cc: Perform minor syntax fix in a comment.  Rename
"is_good_initialzer*" to "is_initializer*" throughout.  Use pthread_printf
rather than debug_printf throughout.  Add extra pthread_printf debugging
throughout.
(pthread_mutex::_new_mutex): New constant value.
(pthread_mutex::_unlocked_mutex): Ditto.
(pthread_mutex::_destroyed_mutex): Ditto.
(pthread_mutex::no_owner): Define new function.
(pthread_mutex::can_be_unlocked): Detect no_owner situation.  Handle
PTHREAD_MUTEX_NORMAL as a special case.
(pthread::create_cancel_event): Use C++ boolean values.
(pthread::precreate): Use method to set mutex type.
(pthread_cond::pthread_cond): Ditto.
(pthread_rwlock::pthread_rwlock): Ditto.
(pthread_mutex::pthread_mutex): Set owner to _new_mutex initially.
(pthread_mutex::~pthread_mutex): Reset various elements to make it clearer if
they are incorrectly reused.
(pthread_mutex::lock): Add clarifying comment.
(pthread_mutex::unlock): Attempt to handle various mutex types correctly.  In
particular, reinstate ability to have one thread unlock another thread's mutex
if type == PTHREAD_MUTEX_NORMAL.
(semaphore::_fixup_after_fork): Avoid redundancy.
(pthread_mutex::_fixup_after_fork): Ditto.  Fix debugging statement.
(__pthread_cond_dowait): Accommodate changes to remove previously inexplicable
use can_be_unblocked() as a static function.
* thread.h: Rename "is_good_initialzer*" to "is_initializer*" throughout.
(pthread_mutex): Reorganize.  Make many things private.
(pthread_mutex::no_owner): Define new method.
(pthread_mutex::_new_mutex): Define new constant.
(pthread_mutex::_unlocked_mutex): Ditto.
(pthread_mutex::_destroyed_mutex): Ditto.
This commit is contained in:
Christopher Faylor
2010-02-22 20:36:04 +00:00
parent 80206d7f71
commit 478ea460eb
4 changed files with 200 additions and 109 deletions
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78
winsup/cygwin/thread.h
View File

@@ -267,15 +267,42 @@ public:
class pthread_mutex: public verifyable_object
{
public:
static bool is_good_object (pthread_mutex_t const *);
static bool is_good_initializer (pthread_mutex_t const *);
static bool is_good_initializer_or_object (pthread_mutex_t const *);
static bool is_good_initializer_or_bad_object (pthread_mutex_t const *);
static bool can_be_unlocked (pthread_mutex_t const *);
static void init_mutex ();
static int init (pthread_mutex_t *, const pthread_mutexattr_t *attr,
const pthread_mutex_t);
static bool is_good_object (pthread_mutex_t const *);
static bool is_initializer (pthread_mutex_t const *);
static bool is_initializer_or_object (pthread_mutex_t const *);
static bool is_initializer_or_bad_object (pthread_mutex_t const *);
int lock ();
int trylock ();
int unlock ();
int destroy ();
void set_type (int in_type) {type = in_type;}
int lock_recursive ()
{
if (recursion_counter == UINT_MAX)
return EAGAIN;
recursion_counter++;
return 0;
}
bool can_be_unlocked ();
pthread_mutex (pthread_mutexattr * = NULL);
pthread_mutex (pthread_mutex_t *, pthread_mutexattr *);
~pthread_mutex ();
class pthread_mutex *next;
static void fixup_after_fork ()
{
mutexes.fixup_after_fork ();
mutexes.for_each (&pthread_mutex::_fixup_after_fork);
}
private:
unsigned long lock_counter;
HANDLE win32_obj_id;
unsigned int recursion_counter;
@@ -287,10 +314,6 @@ public:
int type;
int pshared;
int lock ();
int trylock ();
int unlock ();
int destroy ();
void set_owner (pthread_t self)
{
recursion_counter = 1;
@@ -299,31 +322,16 @@ public:
tid = GetCurrentThreadId ();
#endif
}
static const pthread_t _new_mutex;
static const pthread_t _unlocked_mutex;
static const pthread_t _destroyed_mutex;
int lock_recursive ()
{
if (UINT_MAX == recursion_counter)
return EAGAIN;
++recursion_counter;
return 0;
}
pthread_mutex (pthread_mutexattr * = NULL);
pthread_mutex (pthread_mutex_t *, pthread_mutexattr *);
~pthread_mutex ();
class pthread_mutex * next;
static void fixup_after_fork ()
{
mutexes.fixup_after_fork ();
mutexes.for_each (&pthread_mutex::_fixup_after_fork);
}
private:
bool no_owner ();
void _fixup_after_fork ();
static List<pthread_mutex> mutexes;
static fast_mutex mutex_initialization_lock;
friend class pthread_cond;
};
#define WAIT_CANCELED (WAIT_OBJECT_0 + 1)
@@ -467,9 +475,9 @@ class pthread_cond: public verifyable_object
{
public:
static bool is_good_object (pthread_cond_t const *);
static bool is_good_initializer (pthread_cond_t const *);
static bool is_good_initializer_or_object (pthread_cond_t const *);
static bool is_good_initializer_or_bad_object (pthread_cond_t const *);
static bool is_initializer (pthread_cond_t const *);
static bool is_initializer_or_object (pthread_cond_t const *);
static bool is_initializer_or_bad_object (pthread_cond_t const *);
static void init_mutex ();
static int init (pthread_cond_t *, const pthread_condattr_t *);
@@ -518,9 +526,9 @@ class pthread_rwlock: public verifyable_object
{
public:
static bool is_good_object (pthread_rwlock_t const *);
static bool is_good_initializer (pthread_rwlock_t const *);
static bool is_good_initializer_or_object (pthread_rwlock_t const *);
static bool is_good_initializer_or_bad_object (pthread_rwlock_t const *);
static bool is_initializer (pthread_rwlock_t const *);
static bool is_initializer_or_object (pthread_rwlock_t const *);
static bool is_initializer_or_bad_object (pthread_rwlock_t const *);
static void init_mutex ();
static int init (pthread_rwlock_t *, const pthread_rwlockattr_t *);