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ACE
6.1.1
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Wrapper for readers/writer locks that exist across processes. More...
#include <RW_Process_Mutex.h>

Public Member Functions | |
| ACE_RW_Process_Mutex (const ACE_TCHAR *name=0, int flags=O_CREAT|O_RDWR, mode_t mode=ACE_DEFAULT_RW_PROCESS_MUTEX_PERMS) | |
| ~ACE_RW_Process_Mutex (void) | |
| int | remove (void) |
| int | acquire (void) |
| int | tryacquire (void) |
| int | release (void) |
| Release lock. | |
| int | acquire_read (void) |
| int | acquire_write (void) |
| 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... | |
Wrapper for readers/writer locks that exist across processes.
| ACE_RW_Process_Mutex::ACE_RW_Process_Mutex | ( | const ACE_TCHAR * | name = 0, |
| int | flags = O_CREAT|O_RDWR, |
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| mode_t | mode = ACE_DEFAULT_RW_PROCESS_MUTEX_PERMS |
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| ) |
Create a cross-process readers/writer mutex, passing in the optional name, flags and mode
| int ACE_RW_Process_Mutex::acquire | ( | void | ) | [inline] |
Same as acquire_write(). Acquire lock ownership; blocks until the lock is acquired or the operation fails.
| int ACE_RW_Process_Mutex::acquire_read | ( | void | ) | [inline] |
Acquire read lock; blocks until the lock is acquired or the operation fails.
| int ACE_RW_Process_Mutex::acquire_write | ( | void | ) | [inline] |
Acquire write lock; blocks until the lock is acquired or the operation fails.
| void ACE_RW_Process_Mutex::dump | ( | void | ) | const |
Dump the state of an object.
| const ACE_File_Lock & ACE_RW_Process_Mutex::lock | ( | void | ) | const [inline] |
Return the underlying lock.
| int ACE_RW_Process_Mutex::release | ( | void | ) | [inline] |
Release lock.
| int ACE_RW_Process_Mutex::remove | ( | void | ) | [inline] |
Explicitly destroy the mutex. Note that only one thread should call this method since it doesn't protect against race conditions.
| int ACE_RW_Process_Mutex::tryacquire | ( | void | ) | [inline] |
Same as tryacquire_write(). Try to acquire the lock, but do not block if the lock is not immediately acquired.
| -1 | on failure. If the lock is already held, errno is set to EBUSY. |
| int ACE_RW_Process_Mutex::tryacquire_read | ( | void | ) | [inline] |
Try to acquire the read lock, but do not block if the lock is not immediately acquired.
| -1 | on failure. If the lock is already held, errno is set to EBUSY. |
| int ACE_RW_Process_Mutex::tryacquire_write | ( | void | ) | [inline] |
Try to acquire the write lock, but do not block if the lock is not immediately acquired.
| -1 | on failure. If the lock is already held, errno is set to EBUSY. |
| int ACE_RW_Process_Mutex::tryacquire_write_upgrade | ( | void | ) | [inline] |
Attempt to upgrade a read lock to a write lock. Returns 0 on success, -1 on failure.
| 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...
If the user does not provide a name we generate a unique name in this buffer.
1.8.0