#include <RW_Process_Mutex.h>
Collaboration diagram for ACE_RW_Process_Mutex:

Public Member Functions | |
| ACE_RW_Process_Mutex (const ACE_TCHAR *name=0, int flags=O_CREAT|O_RDWR, mode_t mode=ACE_DEFAULT_OPEN_PERMS) | |
| ~ACE_RW_Process_Mutex (void) | |
| int | remove (void) |
| int | acquire (void) |
| Acquire lock ownership (wait on queue if necessary). | |
| int | tryacquire (void) |
| int | release (void) |
| Release lock and unblock a thread at head of queue. | |
| int | acquire_read (void) |
| Acquire lock ownership (wait on queue if necessary). | |
| int | acquire_write (void) |
| Acquire lock ownership (wait on queue if necessary). | |
| int | tryacquire_read (void) |
| int | tryacquire_write (void) |
| int | tryacquire_write_upgrade (void) |
| const ACE_File_Lock & | lock (void) const |
| Return the underlying lock. | |
| void | dump (void) const |
| Dump the state of an object. | |
Public Attributes | |
| ACE_ALLOC_HOOK_DECLARE | |
| Declare the dynamic allocation hooks. | |
Private Member Functions | |
| const ACE_TCHAR * | unique_name (void) |
| Create and return the unique name. | |
Private Attributes | |
| ACE_TCHAR | name_ [ACE_UNIQUE_NAME_LEN] |
| ACE_File_Lock | lock_ |
| We need this to get the readers/writer semantics... | |
Note that because this class uses the <ACE_File_Lock> as its implementation it only can be reliably used between separate processes, rather than threads in the same process. This isn't a limitation of ACE, it's simply the file lock semantics on UNIX and Win32.
| ACE_RW_Process_Mutex::ACE_RW_Process_Mutex | ( | const ACE_TCHAR * | name = 0, |
|
| int | flags = O_CREAT|O_RDWR, |
|||
| mode_t | mode = ACE_DEFAULT_OPEN_PERMS | |||
| ) |
Create a readers/writer <Process_Mutex>, passing in the optional <name>, <flags> and <mode>
| ACE_RW_Process_Mutex::~ACE_RW_Process_Mutex | ( | void | ) |
| ACE_INLINE int ACE_RW_Process_Mutex::acquire | ( | void | ) |
Acquire lock ownership (wait on queue if necessary).
| ACE_INLINE int ACE_RW_Process_Mutex::acquire_read | ( | void | ) |
Acquire lock ownership (wait on queue if necessary).
| ACE_INLINE int ACE_RW_Process_Mutex::acquire_write | ( | void | ) |
Acquire lock ownership (wait on queue if necessary).
| void ACE_RW_Process_Mutex::dump | ( | void | ) | const |
Dump the state of an object.
| ACE_INLINE const ACE_File_Lock & ACE_RW_Process_Mutex::lock | ( | void | ) | const |
Return the underlying lock.
| ACE_INLINE int ACE_RW_Process_Mutex::release | ( | void | ) |
Release lock and unblock a thread at head of queue.
| ACE_BEGIN_VERSIONED_NAMESPACE_DECL ACE_INLINE int ACE_RW_Process_Mutex::remove | ( | void | ) |
Explicitly destroy the mutex. Note that only one thread should call this method since it doesn't protect against race conditions.
| ACE_INLINE int ACE_RW_Process_Mutex::tryacquire | ( | void | ) |
Conditionally acquire lock (i.e., don't wait on queue). Returns -1 on failure. If we "failed" because someone else already had the lock, <errno> is set to <EBUSY>.
| ACE_INLINE int ACE_RW_Process_Mutex::tryacquire_read | ( | void | ) |
Conditionally acquire a lock (i.e., won't block). Returns -1 on failure. If we "failed" because someone else already had the lock, <errno> is set to <EBUSY>.
| ACE_INLINE int ACE_RW_Process_Mutex::tryacquire_write | ( | void | ) |
Conditionally acquire a lock (i.e., won't block). Returns -1 on failure. If we "failed" because someone else already had the lock, <errno> is set to <EBUSY>.
| ACE_INLINE int ACE_RW_Process_Mutex::tryacquire_write_upgrade | ( | void | ) |
Attempt to upgrade a read lock to a write lock. Returns 0 on success, -1 on failure.
| ACE_BEGIN_VERSIONED_NAMESPACE_DECL const ACE_TCHAR * ACE_RW_Process_Mutex::unique_name | ( | void | ) | [private] |
Create and return the unique name.
Declare the dynamic allocation hooks.
ACE_File_Lock ACE_RW_Process_Mutex::lock_ [private] |
We need this to get the readers/writer semantics...
ACE_TCHAR ACE_RW_Process_Mutex::name_[ACE_UNIQUE_NAME_LEN] [private] |
If the user does not provide a name we generate a unique name in this buffer.
1.4.7-1