#include <SV_Semaphore_Simple.h>
Inheritance diagram for ACE_SV_Semaphore_Simple:

Public Types | |
| enum | { ACE_CREATE = IPC_CREAT, ACE_EXCL = IPC_EXCL, ACE_OPEN = 0 } |
Public Methods | |
| ACE_SV_Semaphore_Simple (void) | |
| ACE_SV_Semaphore_Simple (key_t key, int flags=ACE_SV_Semaphore_Simple::ACE_CREATE, int initial_value=1, u_short nsems=1, int perms=ACE_DEFAULT_FILE_PERMS) | |
| ACE_SV_Semaphore_Simple (const char *name, int flags=ACE_SV_Semaphore_Simple::ACE_CREATE, int initial_value=1, u_short nsems=1, int perms=ACE_DEFAULT_FILE_PERMS) | |
| ~ACE_SV_Semaphore_Simple (void) | |
| int | open (const char *name, int flags=ACE_SV_Semaphore_Simple::ACE_CREATE, int initial_value=1, u_short nsems=1, int perms=ACE_DEFAULT_FILE_PERMS) |
| int | open (key_t key, int flags=ACE_SV_Semaphore_Simple::ACE_CREATE, int initial_value=1, u_short nsems=1, int perms=ACE_DEFAULT_FILE_PERMS) |
| Open or create one or more SV_Semaphores. We return 0 if all is OK, else -1. More... | |
| int | close (void) |
| Close a ACE_SV_Semaphore, marking it as invalid for subsequent operations... More... | |
| int | remove (void) const |
| int | acquire (u_short n=0, int flags=0) const |
| int | acquire_read (u_short n=0, int flags=0) const |
| Acquire a semaphore for reading. More... | |
| int | acquire_write (u_short n=0, int flags=0) const |
| Acquire a semaphore for writing. More... | |
| int | tryacquire (u_short n=0, int flags=0) const |
| Non-blocking version of <acquire>. More... | |
| int | tryacquire_read (u_short n=0, int flags=0) const |
| Try to acquire the semaphore for reading. More... | |
| int | tryacquire_write (u_short n=0, int flags=0) const |
| Try to acquire the semaphore for writing. More... | |
| int | release (u_short n=0, int flags=0) const |
| Increment ACE_SV_Semaphore by one. Dijkstra's V operation, Tannenbaums UP operation. More... | |
| int | op (int val, u_short semnum=0, int flags=SEM_UNDO) const |
| General ACE_SV_Semaphore operation. Increment or decrement by a specific amount (positive or negative; amount can`t be zero). More... | |
| int | op (sembuf op_vec[], u_short nsems) const |
| General ACE_SV_Semaphore operation on an array of SV_Semaphores. More... | |
| int | control (int cmd, semun arg, u_short n=0) const |
| int | control (int cmd, int value=0, u_short n=0) const |
| int | get_id (void) const |
| Get underlying internal id. More... | |
| void | dump (void) const |
| Dump the state of an object. More... | |
Public Attributes | |
| ACE_ALLOC_HOOK_DECLARE | |
| Declare the dynamic allocation hooks. More... | |
Protected Methods | |
| int | init (key_t k=ACE_static_cast(key_t, ACE_INVALID_SEM_KEY), int i=-1) |
| key_t | name_2_key (const char *name) |
Protected Attributes | |
| key_t | key_ |
| Semaphore key. More... | |
| int | internal_id_ |
| Internal ID to identify the semaphore group within this process. More... | |
| int | sem_number_ |
| Number of semaphores we're creating. More... | |
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Wait until a ACE_SV_Semaphore's value is greater than 0, the decrement it by 1 and return. Dijkstra's P operation, Tannenbaums DOWN operation. Reimplemented in ACE_SV_Semaphore_Complex. |
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Acquire a semaphore for reading.
Reimplemented in ACE_SV_Semaphore_Complex. |
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Acquire a semaphore for writing.
Reimplemented in ACE_SV_Semaphore_Complex. |
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Close a ACE_SV_Semaphore, marking it as invalid for subsequent operations...
Reimplemented in ACE_SV_Semaphore_Complex. |
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Reimplemented in ACE_SV_Semaphore_Complex. |
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Reimplemented in ACE_SV_Semaphore_Complex. |
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Dump the state of an object.
Reimplemented in ACE_SV_Semaphore_Complex. |
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Get underlying internal id.
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Convert name to key This function is used internally to create keys for the semaphores. A valid name contains letters and digits only and MUST start with a letter. The method for generating names is not very sophisticated, so caller should not pass strings which match each other for the first LUSED characters when he wants to get a different key. |
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General ACE_SV_Semaphore operation on an array of SV_Semaphores.
Reimplemented in ACE_SV_Semaphore_Complex. |
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General ACE_SV_Semaphore operation. Increment or decrement by a specific amount (positive or negative; amount can`t be zero).
Reimplemented in ACE_SV_Semaphore_Complex. |
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Open or create one or more SV_Semaphores. We return 0 if all is OK, else -1.
Reimplemented in ACE_SV_Semaphore_Complex. |
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Reimplemented in ACE_SV_Semaphore_Complex. |
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Increment ACE_SV_Semaphore by one. Dijkstra's V operation, Tannenbaums UP operation.
Reimplemented in ACE_SV_Semaphore_Complex. |
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Remove all SV_Semaphores associated with a particular key. This call is intended to be called from a server, for example, when it is being shut down, as we do an IPC_RMID on the ACE_SV_Semaphore, regardless of whether other processes may be using it or not. Most other processes should use <close> below. |
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Non-blocking version of <acquire>.
Reimplemented in ACE_SV_Semaphore_Complex. |
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Try to acquire the semaphore for reading.
Reimplemented in ACE_SV_Semaphore_Complex. |
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Try to acquire the semaphore for writing.
Reimplemented in ACE_SV_Semaphore_Complex. |
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Declare the dynamic allocation hooks.
Reimplemented in ACE_SV_Semaphore_Complex. |
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Internal ID to identify the semaphore group within this process.
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Semaphore key.
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Number of semaphores we're creating.
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1.2.13.1 written by Dimitri van Heesch,
© 1997-2001