ISharedSemaphoreHandle
- The ISharedSemaphoreHandle class is a wrapper for operating system semaphore handles.
An example of a semaphore is a flag in a multiple-user application that prevents simultaneous
access to a file.
ISharedSemaphoreHandle - Member Functions and Data by Group
Constructors & Destructor
Use this constructor to create an ISharedSemaphoreHandle object.
- ISharedSemaphoreHandle
public:
ISharedSemaphoreHandle(Value hsem = 0)
- Constructs an ISharedSemaphoreHandle object from an operating system handle of type Value. Typically this
value originates in a system API call.
- Supported Platforms
| Windows |
OS/2 |
AIX |
| Yes |
Yes |
Yes |
Diagnostics
Use these functions to obtain diagnostic information about the handle.
- asDebugInfo
public:
IString asDebugInfo() const
- Returns the handle as a string containing diagnostic information.
- Supported Platforms
| Windows |
OS/2 |
AIX |
| Yes |
Yes |
Yes |
- asString
public:
IString asString() const
- Returns the handle as a string of form nnnn.
- Supported Platforms
| Windows |
OS/2 |
AIX |
| Yes |
Yes |
Yes |
Member Access
These methods provide access to member data.
- asUnsigned
public:
unsigned long asUnsigned() const
- Returns the handle value as an unsigned long value.
- Supported Platforms
| Windows |
OS/2 |
AIX |
| Yes |
Yes |
Yes |
- operator Value
public:
operator Value() const
- Returns the handle as its operating system dependent type. Use this operator when you
use the handle object as an argument to an operating system function.
- Supported Platforms
| Windows |
OS/2 |
AIX |
| Yes |
Yes |
Yes |
- Value
typedef unsigned long Value
- This type definition defines Value to be a void* on the Windows platforms. On all other platforms Value is
defined to be an unsigned long.
- Variation 1
typedef unsigned long Value
- Supported Platforms
| Windows |
OS/2 |
AIX |
| No |
Yes |
Yes |
Variation 2
typedef void * Value
- Supported Platforms
| Windows |
OS/2 |
AIX |
| Yes |
No |
No |
operator <<
ostream& operator <<(ostream& aStream, const ISharedSemaphoreHandle& aHandle)
- Formats this shared semaphore object to the passed ostream.
Inherited Public Functions
Inherited Public Data
Inherited Protected Functions
Inherited Protected Data