ACE 6.0.5
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Implement a C++ wrapper that allows nested acquisition and release of a mutex that occurs in the same thread. More...
#include <Recursive_Thread_Mutex.h>
Public Member Functions | |
ACE_Recursive_Thread_Mutex (const ACE_TCHAR *name=0, ACE_mutexattr_t *arg=0) | |
Initialize a recursive mutex. | |
~ACE_Recursive_Thread_Mutex (void) | |
Implicitly release a recursive mutex. | |
int | remove (void) |
int | acquire (void) |
int | acquire (ACE_Time_Value &tv) |
int | acquire (ACE_Time_Value *tv) |
int | tryacquire (void) |
int | acquire_read (void) |
int | acquire_write (void) |
int | tryacquire_read (void) |
int | tryacquire_write (void) |
int | tryacquire_write_upgrade (void) |
int | release (void) |
ACE_thread_t | get_thread_id (void) |
Return the id of the thread that currently owns the mutex. | |
int | get_nesting_level (void) |
ACE_recursive_thread_mutex_t & | lock (void) |
Returns a reference to the recursive mutex;. | |
ACE_thread_mutex_t & | get_nesting_mutex (void) |
Returns a reference to the recursive mutex's internal mutex;. | |
void | dump (void) const |
Dump the state of an object. | |
Public Attributes | |
ACE_ALLOC_HOOK_DECLARE | |
Declare the dynamic allocation hooks. | |
Protected Member Functions | |
void | set_thread_id (ACE_thread_t t) |
Protected Attributes | |
ACE_recursive_thread_mutex_t | lock_ |
Recursive mutex. | |
bool | removed_ |
Private Member Functions | |
void | operator= (const ACE_Recursive_Thread_Mutex &) |
ACE_Recursive_Thread_Mutex (const ACE_Recursive_Thread_Mutex &) |
Implement a C++ wrapper that allows nested acquisition and release of a mutex that occurs in the same thread.
ACE_Recursive_Thread_Mutex::ACE_Recursive_Thread_Mutex | ( | const ACE_TCHAR * | name = 0 , |
ACE_mutexattr_t * | arg = 0 |
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) |
Initialize a recursive mutex.
ACE_Recursive_Thread_Mutex::~ACE_Recursive_Thread_Mutex | ( | void | ) |
Implicitly release a recursive mutex.
ACE_Recursive_Thread_Mutex::ACE_Recursive_Thread_Mutex | ( | const ACE_Recursive_Thread_Mutex & | ) | [private] |
int ACE_Recursive_Thread_Mutex::acquire | ( | void | ) | [inline] |
Acquire a recursive mutex (will increment the nesting level and not deadmutex if the owner of the mutex calls this method more than once).
int ACE_Recursive_Thread_Mutex::acquire | ( | ACE_Time_Value * | tv | ) | [inline] |
If tv == 0 the call acquire() directly. Otherwise, Block the thread until we acquire the mutex or until tv times out, in which case -1 is returned with errno
== ETIME
. Note that <*tv> is assumed to be in "absolute" rather than "relative" time. The value of <*tv> is updated upon return to show the actual (absolute) acquisition time.
int ACE_Recursive_Thread_Mutex::acquire | ( | ACE_Time_Value & | tv | ) | [inline] |
Block the thread until we acquire the mutex or until tv times out, in which case -1 is returned with errno
== ETIME
. Note that tv is assumed to be in "absolute" rather than "relative" time. The value of tv is updated upon return to show the actual (absolute) acquisition time.
int ACE_Recursive_Thread_Mutex::acquire_read | ( | void | ) | [inline] |
Acquire mutex ownership. This calls acquire() and is only here to make the ACE_Recusive_Thread_Mutex interface consistent with the other synchronization APIs.
int ACE_Recursive_Thread_Mutex::acquire_write | ( | void | ) | [inline] |
Acquire mutex ownership. This calls acquire() and is only here to make the ACE_Recusive_Thread_Mutex interface consistent with the other synchronization APIs.
void ACE_Recursive_Thread_Mutex::dump | ( | void | ) | const |
Dump the state of an object.
int ACE_Recursive_Thread_Mutex::get_nesting_level | ( | void | ) |
Return the nesting level of the recursion. When a thread has acquired the mutex for the first time, the nesting level == 1. The nesting level is incremented every time the thread acquires the mutex recursively. Note that if the ACE_HAS_RECURSIVE_MUTEXES macro is enabled then this method may return -1 on platforms that do not expose the internal count.
ACE_thread_mutex_t & ACE_Recursive_Thread_Mutex::get_nesting_mutex | ( | void | ) | [inline] |
Returns a reference to the recursive mutex's internal mutex;.
ACE_thread_t ACE_Recursive_Thread_Mutex::get_thread_id | ( | void | ) |
Return the id of the thread that currently owns the mutex.
ACE_recursive_thread_mutex_t & ACE_Recursive_Thread_Mutex::lock | ( | void | ) | [inline] |
Returns a reference to the recursive mutex;.
void ACE_Recursive_Thread_Mutex::operator= | ( | const ACE_Recursive_Thread_Mutex & | ) | [private] |
int ACE_Recursive_Thread_Mutex::release | ( | void | ) | [inline] |
Releases a recursive mutex (will not release mutex until all the nesting level drops to 0, which means the mutex is no longer held).
int ACE_Recursive_Thread_Mutex::remove | ( | void | ) |
Implicitly release a recursive mutex. Note that only one thread should call this method since it doesn't protect against race conditions.
void ACE_Recursive_Thread_Mutex::set_thread_id | ( | ACE_thread_t | t | ) | [inline, protected] |
int ACE_Recursive_Thread_Mutex::tryacquire | ( | void | ) | [inline] |
Conditionally acquire a recursive mutex (i.e., won't block). Returns -1 on failure. If we "failed" because someone else already had the lock, errno
is set to EBUSY
.
int ACE_Recursive_Thread_Mutex::tryacquire_read | ( | void | ) | [inline] |
Conditionally acquire mutex (i.e., won't block). This calls tryacquire() and is only here to make the ACE_Recusive_Thread_Mutex interface consistent with the other synchronization APIs. Returns -1 on failure. If we "failed" because someone else already had the lock, errno
is set to EBUSY
.
int ACE_Recursive_Thread_Mutex::tryacquire_write | ( | void | ) | [inline] |
Conditionally acquire mutex (i.e., won't block). This calls tryacquire() and is only here to make the ACE_Recusive_Thread_Mutex interface consistent with the other synchronization APIs. Returns -1 on failure. If we "failed" because someone else already had the lock, errno
is set to EBUSY
.
int ACE_Recursive_Thread_Mutex::tryacquire_write_upgrade | ( | void | ) | [inline] |
This is only here to make the ACE_Recursive_Thread_Mutex interface consistent with the other synchronization APIs. Assumes the caller has already acquired the mutex using one of the above calls, and returns 0 (success) always.
Declare the dynamic allocation hooks.
Recursive mutex.
bool ACE_Recursive_Thread_Mutex::removed_ [protected] |
Keeps track of whether remove() has been called yet to avoid multiple remove() calls, e.g., explicitly and implicitly in the destructor. This flag isn't protected by a lock, so make sure that you don't have multiple threads simultaneously calling remove() on the same object, which is a bad idea anyway...