#include <SV_Semaphore_Simple.h>

Public Types | |
| enum | { ACE_CREATE = IPC_CREAT, ACE_EXCL = IPC_EXCL, ACE_OPEN = 0 } |
Public Member Functions | |
| ACE_SV_Semaphore_Simple (void) | |
| ACE_SV_Semaphore_Simple (key_t key, short flags=ACE_SV_Semaphore_Simple::ACE_CREATE, int initial_value=1, u_short nsems=1, mode_t perms=ACE_DEFAULT_FILE_PERMS) | |
| ACE_SV_Semaphore_Simple (const char *name, short flags=ACE_SV_Semaphore_Simple::ACE_CREATE, int initial_value=1, u_short nsems=1, mode_t perms=ACE_DEFAULT_FILE_PERMS) | |
| ACE_SV_Semaphore_Simple (const wchar_t *name, short flags=ACE_SV_Semaphore_Simple::ACE_CREATE, int initial_value=1, u_short nsems=1, mode_t perms=ACE_DEFAULT_FILE_PERMS) | |
| ~ACE_SV_Semaphore_Simple (void) | |
| int | open (const char *name, short flags=ACE_SV_Semaphore_Simple::ACE_CREATE, int initial_value=1, u_short nsems=1, mode_t perms=ACE_DEFAULT_FILE_PERMS) |
| int | open (const wchar_t *name, short flags=ACE_SV_Semaphore_Simple::ACE_CREATE, int initial_value=1, u_short nsems=1, mode_t perms=ACE_DEFAULT_FILE_PERMS) |
| int | open (key_t key, short flags=ACE_SV_Semaphore_Simple::ACE_CREATE, int initial_value=1, u_short nsems=1, mode_t perms=ACE_DEFAULT_FILE_PERMS) |
| int | close (void) |
| int | remove (void) const |
| int | acquire (u_short n=0, short flags=0) const |
| int | acquire_read (u_short n=0, short flags=0) const |
| Acquire a semaphore for reading. | |
| int | acquire_write (u_short n=0, short flags=0) const |
| Acquire a semaphore for writing. | |
| int | tryacquire (u_short n=0, short flags=0) const |
| Non-blocking version of <acquire>. | |
| int | tryacquire_read (u_short n=0, short flags=0) const |
| Try to acquire the semaphore for reading. | |
| int | tryacquire_write (u_short n=0, short flags=0) const |
| Try to acquire the semaphore for writing. | |
| int | release (u_short n=0, short flags=0) const |
| int | op (short val, u_short semnum=0, short flags=SEM_UNDO) const |
| int | op (sembuf op_vec[], u_short nsems) const |
| General ACE_SV_Semaphore operation on an array of SV_Semaphores. | |
| 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. | |
| void | dump (void) const |
| Dump the state of an object. | |
Public Attributes | |
| ACE_ALLOC_HOOK_DECLARE | |
| Declare the dynamic allocation hooks. | |
Protected Member Functions | |
| int | init (key_t k=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. | |
| int | internal_id_ |
| Internal ID to identify the semaphore group within this process. | |
| int | sem_number_ |
| Number of semaphores we're creating. | |
| ACE_SV_Semaphore_Simple::ACE_SV_Semaphore_Simple | ( | void | ) |
| ACE_SV_Semaphore_Simple::ACE_SV_Semaphore_Simple | ( | key_t | key, | |
| short | flags = ACE_SV_Semaphore_Simple::ACE_CREATE, |
|||
| int | initial_value = 1, |
|||
| u_short | nsems = 1, |
|||
| mode_t | perms = ACE_DEFAULT_FILE_PERMS | |||
| ) |
| ACE_SV_Semaphore_Simple::ACE_SV_Semaphore_Simple | ( | const char * | name, | |
| short | flags = ACE_SV_Semaphore_Simple::ACE_CREATE, |
|||
| int | initial_value = 1, |
|||
| u_short | nsems = 1, |
|||
| mode_t | perms = ACE_DEFAULT_FILE_PERMS | |||
| ) |
| ACE_SV_Semaphore_Simple::ACE_SV_Semaphore_Simple | ( | const wchar_t * | name, | |
| short | flags = ACE_SV_Semaphore_Simple::ACE_CREATE, |
|||
| int | initial_value = 1, |
|||
| u_short | nsems = 1, |
|||
| mode_t | perms = ACE_DEFAULT_FILE_PERMS | |||
| ) |
| ACE_SV_Semaphore_Simple::~ACE_SV_Semaphore_Simple | ( | void | ) |
| ACE_INLINE int ACE_SV_Semaphore_Simple::acquire | ( | u_short | n = 0, |
|
| short | flags = 0 | |||
| ) | const |
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.
| ACE_INLINE int ACE_SV_Semaphore_Simple::acquire_read | ( | u_short | n = 0, |
|
| short | flags = 0 | |||
| ) | const |
| ACE_INLINE int ACE_SV_Semaphore_Simple::acquire_write | ( | u_short | n = 0, |
|
| short | flags = 0 | |||
| ) | const |
| ACE_INLINE int ACE_SV_Semaphore_Simple::close | ( | void | ) |
Close a ACE_SV_Semaphore, marking it as invalid for subsequent operations...
Reimplemented in ACE_SV_Semaphore_Complex.
| int ACE_SV_Semaphore_Simple::control | ( | int | cmd, | |
| int | value = 0, |
|||
| u_short | n = 0 | |||
| ) | const |
Reimplemented in ACE_SV_Semaphore_Complex.
| ACE_INLINE int ACE_SV_Semaphore_Simple::control | ( | int | cmd, | |
| semun | arg, | |||
| u_short | n = 0 | |||
| ) | const |
Reimplemented in ACE_SV_Semaphore_Complex.
| ACE_BEGIN_VERSIONED_NAMESPACE_DECL void ACE_SV_Semaphore_Simple::dump | ( | void | ) | const |
| ACE_INLINE int ACE_SV_Semaphore_Simple::get_id | ( | void | ) | const |
Get underlying internal id.
| int ACE_SV_Semaphore_Simple::init | ( | key_t | k = static_cast<key_t> (ACE_INVALID_SEM_KEY), |
|
| int | i = -1 | |||
| ) | [protected] |
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.
| key_t ACE_SV_Semaphore_Simple::name_2_key | ( | const char * | name | ) | [protected] |
| ACE_INLINE int ACE_SV_Semaphore_Simple::op | ( | sembuf | op_vec[], | |
| u_short | nsems | |||
| ) | const |
General ACE_SV_Semaphore operation on an array of SV_Semaphores.
Reimplemented in ACE_SV_Semaphore_Complex.
| int ACE_SV_Semaphore_Simple::op | ( | short | val, | |
| u_short | semnum = 0, |
|||
| short | flags = SEM_UNDO | |||
| ) | const |
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.
| int ACE_SV_Semaphore_Simple::open | ( | key_t | key, | |
| short | flags = ACE_SV_Semaphore_Simple::ACE_CREATE, |
|||
| int | initial_value = 1, |
|||
| u_short | nsems = 1, |
|||
| mode_t | perms = ACE_DEFAULT_FILE_PERMS | |||
| ) |
Open or create one or more SV_Semaphores. We return 0 if all is OK, else -1.
Reimplemented in ACE_SV_Semaphore_Complex.
| ACE_BEGIN_VERSIONED_NAMESPACE_DECL ACE_INLINE int ACE_SV_Semaphore_Simple::open | ( | const wchar_t * | name, | |
| short | flags = ACE_SV_Semaphore_Simple::ACE_CREATE, |
|||
| int | initial_value = 1, |
|||
| u_short | nsems = 1, |
|||
| mode_t | perms = ACE_DEFAULT_FILE_PERMS | |||
| ) |
| int ACE_SV_Semaphore_Simple::open | ( | const char * | name, | |
| short | flags = ACE_SV_Semaphore_Simple::ACE_CREATE, |
|||
| int | initial_value = 1, |
|||
| u_short | nsems = 1, |
|||
| mode_t | perms = ACE_DEFAULT_FILE_PERMS | |||
| ) |
Reimplemented in ACE_SV_Semaphore_Complex.
| ACE_INLINE int ACE_SV_Semaphore_Simple::release | ( | u_short | n = 0, |
|
| short | flags = 0 | |||
| ) | const |
Increment ACE_SV_Semaphore by one. Dijkstra's V operation, Tannenbaums UP operation.
Reimplemented in ACE_SV_Semaphore_Complex.
| int ACE_SV_Semaphore_Simple::remove | ( | void | ) | const |
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.
| ACE_INLINE int ACE_SV_Semaphore_Simple::tryacquire | ( | u_short | n = 0, |
|
| short | flags = 0 | |||
| ) | const |
| ACE_INLINE int ACE_SV_Semaphore_Simple::tryacquire_read | ( | u_short | n = 0, |
|
| short | flags = 0 | |||
| ) | const |
| ACE_INLINE int ACE_SV_Semaphore_Simple::tryacquire_write | ( | u_short | n = 0, |
|
| short | flags = 0 | |||
| ) | const |
int ACE_SV_Semaphore_Simple::internal_id_ [protected] |
Internal ID to identify the semaphore group within this process.
key_t ACE_SV_Semaphore_Simple::key_ [protected] |
Semaphore key.
int ACE_SV_Semaphore_Simple::sem_number_ [protected] |
Number of semaphores we're creating.
1.5.8