diff options
Diffstat (limited to 'ace/SV_Semaphore_Simple.cpp')
| -rw-r--r-- | ace/SV_Semaphore_Simple.cpp | 205 |
1 files changed, 0 insertions, 205 deletions
diff --git a/ace/SV_Semaphore_Simple.cpp b/ace/SV_Semaphore_Simple.cpp deleted file mode 100644 index f7a6809dbb2..00000000000 --- a/ace/SV_Semaphore_Simple.cpp +++ /dev/null @@ -1,205 +0,0 @@ -// SV_Semaphore_Simple.cpp -// $Id$ - -/* -*- C++ -*- */ - -#define ACE_BUILD_DLL -#include "ace/SV_Semaphore_Simple.h" - -ACE_ALLOC_HOOK_DEFINE(ACE_SV_Semaphore_Simple) - -void -ACE_SV_Semaphore_Simple::dump (void) const -{ - ACE_TRACE ("ACE_SV_Semaphore_Simple::dump"); -} - -int -ACE_SV_Semaphore_Simple::control (int cmd, - int value, - u_short semnum) const -{ - ACE_TRACE ("ACE_SV_Semaphore_Simple::control"); - if (this->internal_id_ == -1) - return -1; - else - { - semun semctl_arg; - - semctl_arg.val = value; - return ACE_OS::semctl (this->internal_id_, semnum, - cmd, semctl_arg); - } -} - -int -ACE_SV_Semaphore_Simple::init (key_t k, int i) -{ - ACE_TRACE ("ACE_SV_Semaphore_Simple::init"); - this->key_ = k; - this->internal_id_ = i; - return 0; -} - -// General ACE_SV_Semaphore operation. Increment or decrement by a -// specific amount (positive or negative; amount can`t be zero). - -int -ACE_SV_Semaphore_Simple::op (int val, u_short n, int flags) const -{ - ACE_TRACE ("ACE_SV_Semaphore_Simple::op"); - sembuf op_op; - - op_op.sem_num = n; - op_op.sem_flg = flags; - - if (this->internal_id_ == -1) - return -1; - else if ((op_op.sem_op = val) == 0) - return -1; - else - return ACE_OS::semop (this->internal_id_, &op_op, 1); -} - -// Open or create one or more SV_Semaphores. We return 0 if all is -// OK, else -1. - -int -ACE_SV_Semaphore_Simple::open (key_t k, - int flags, - int initial_value, - u_short n, - int perms) -{ - ACE_TRACE ("ACE_SV_Semaphore_Simple::open"); - union semun ivalue; - - if (k == IPC_PRIVATE || k == ACE_INVALID_SEM_KEY) - return -1; - - ivalue.val = initial_value; - this->key_ = k; - this->sem_number_ = n; - - this->internal_id_ = ACE_OS::semget (this->key_, n, perms | flags); - - if (this->internal_id_ == -1) - return -1; - - if (flags == IPC_CREAT) - { - for (int i = 0; i < n; i++) - if (ACE_OS::semctl (this->internal_id_, i, SETVAL, ivalue) == -1) - return -1; - } - - return 0; -} - -ACE_SV_Semaphore_Simple::ACE_SV_Semaphore_Simple (key_t k, - int flags, - int initial_value, - u_short n, - int perms) - : key_ (k) -{ - ACE_TRACE ("ACE_SV_Semaphore_Simple::ACE_SV_Semaphore_Simple"); - if (this->open (k, flags, initial_value, n, perms) == -1) - ACE_ERROR ((LM_ERROR, "%p\n", "ACE_SV_Semaphore::ACE_SV_Semaphore")); -} - -// 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) -{ - ACE_TRACE ("ACE_SV_Semaphore_Simple::name_2_key"); - - if (name == 0) - { - errno = EINVAL; - return ACE_INVALID_SEM_KEY; - } - else - { - // Basically "hash" the values in the <name>. This won't - // necessarily guarantee uniqueness of all keys. - - u_long proto = 0; - - for (int i = 0; name[i] != '\0'; ++i) - { - proto <<= 8; - proto |= *name++ & 0xff; - } - - return (key_t) proto; - } -} - -// Open or create a ACE_SV_Semaphore. We return 1 if all is OK, else -// 0. - -int -ACE_SV_Semaphore_Simple::open (const char *name, - int flags, - int initial_value, - u_short n, - int perms) -{ - ACE_TRACE ("ACE_SV_Semaphore_Simple::open"); - - key_t key; - - if (name == 0) - key = ACE_DEFAULT_SEM_KEY; - else - key = this->name_2_key (name); - - return this->open (key, flags, initial_value, n, perms); -} - -ACE_SV_Semaphore_Simple::ACE_SV_Semaphore_Simple (const char *name, - int flags, - int initial_value, - u_short n, - int perms) -{ - ACE_TRACE ("ACE_SV_Semaphore_Simple::ACE_SV_Semaphore_Simple"); - if (this->open (name, flags, initial_value, n, perms) == -1) - ACE_ERROR ((LM_ERROR, "%p\n", - "ACE_SV_Semaphore_Simple::ACE_SV_Semaphore_Simple")); -} - -ACE_SV_Semaphore_Simple::~ACE_SV_Semaphore_Simple (void) -{ - ACE_TRACE ("ACE_SV_Semaphore_Simple::~ACE_SV_Semaphore_Simple"); - this->close (); -} - -ACE_SV_Semaphore_Simple::ACE_SV_Semaphore_Simple (void) -{ - ACE_TRACE ("ACE_SV_Semaphore_Simple::ACE_SV_Semaphore_Simple"); - this->init (); -} - -// 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. - -int -ACE_SV_Semaphore_Simple::remove (void) const -{ - ACE_TRACE ("ACE_SV_Semaphore_Simple::remove"); - int result = this->control (IPC_RMID); - ((ACE_SV_Semaphore_Simple *) this)->init (); - return result; -} |