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azerothcore-wotlk-pbot/modules/dep/acelite/ace/Service_Gestalt.cpp

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#include "ace/Svc_Conf.h"
#include "ace/Get_Opt.h"
#include "ace/ARGV.h"
#include "ace/Malloc.h"
#include "ace/Service_Manager.h"
#include "ace/Service_Types.h"
#include "ace/Containers.h"
#include "ace/Auto_Ptr.h"
#include "ace/Reactor.h"
#include "ace/Thread_Manager.h"
#include "ace/DLL.h"
#include "ace/XML_Svc_Conf.h"
#include "ace/SString.h"
#ifndef ACE_LACKS_UNIX_SIGNALS
# include "ace/Signal.h"
#endif /* !ACE_LACKS_UNIX_SIGNALS */
#include "ace/OS_NS_stdio.h"
#include "ace/OS_NS_string.h"
#include "ace/OS_NS_time.h"
#include "ace/OS_NS_unistd.h"
#include "ace/OS_NS_sys_stat.h"
#include "ace/TSS_T.h"
#include "ace/Service_Gestalt.h"
#include "ace/Svc_Conf_Param.h"
ACE_BEGIN_VERSIONED_NAMESPACE_DECL
ACE_Service_Type_Dynamic_Guard::ACE_Service_Type_Dynamic_Guard
(ACE_Service_Repository &r, const ACE_TCHAR *name)
: repo_ (r)
// Relocation starts where the next service will be inserted (if any)
, repo_begin_ (r.current_size ())
, name_ (name)
# if defined (ACE_MT_SAFE) && (ACE_MT_SAFE != 0)
// On this thread (for the duration of the initialize() method),
// we're about to do two things that require locking: (1) fiddle
// with the repository and (2) load a DLL and hence lock the
// DLL_Manager.
//
// Now if we don't lock the repo here, it is possible that two
// threads may deadlock on initialization because they can acquire
// locks (1) and (2) in different order, for instance:
//
// T1: loads a DLL (2) and registers a service (1);
//
// T2: may be relocating a service (1), which could lead to a
// (re)opening or uping the ref count on a DLL (2);
//
// To prevent this, we lock the repo here, using the repo_monitor_
// member guard.
, repo_monitor_ (r.lock_)
#endif
{
if (ACE::debug ())
ACELIB_DEBUG ((LM_DEBUG,
ACE_TEXT ("ACE (%P|%t) STDG::<ctor>, repo=%@")
ACE_TEXT(", name=%s - beginning at [%d]\n"),
&this->repo_,
this->name_,
this->repo_begin_));
ACE_ASSERT (this->name_ != 0); // No name?
}
/// Destructor
ACE_Service_Type_Dynamic_Guard::~ACE_Service_Type_Dynamic_Guard (void)
{
const ACE_Service_Type *tmp = 0;
// Lookup without ignoring suspended services. Making sure
// not to ignore any inactive services, since those may be forward
// declarations
size_t slot = 0;
int const ret = this->repo_.find_i (this->name_, slot, &tmp, false);
// We inserted it (as inactive), so we expect to find it, right?
if ((ret < 0 && ret != -2) || tmp == 0)
{
if (ACE::debug ())
ACELIB_ERROR ((LM_WARNING,
ACE_TEXT ("ACE (%P|%t) STDG::<dtor> - Failed (%d) to find %s -> %@\n"),
ret, this->name_, tmp));
return;
}
if (tmp->type () != 0)
{
// Something has registered a proper (non-forward-decl) service with
// the same name as our dummy.
if (ACE::debug ())
ACELIB_DEBUG ((LM_DEBUG,
ACE_TEXT ("ACE (%P|%t) STDG::<dtor>, repo=%@ [%d], ")
ACE_TEXT ("name=%s - updating dependents [%d - %d)\n"),
&this->repo_,
slot,
this->name_,
this->repo_begin_,
this->repo_.current_size ()));
// Relocate any services inserted since we were created.
// Any (static, i.e. DLL = 0) services registered in
// the context of this guard aren't really static because
// their code belongs in the DLL's code segment
this->repo_.relocate_i (this->repo_begin_, this->repo_.current_size (), tmp->dll());
if (ACE::debug ())
ACELIB_DEBUG ((LM_DEBUG,
ACE_TEXT ("ACE (%P|%t) STDG::<dtor>, repo=%@ [%d], ")
ACE_TEXT ("name=%s - loaded (type=%@, impl=%@, object=%@, active=%d)\n"),
&this->repo_,
slot,
this->name_,
tmp,
tmp->type (),
tmp->type ()->object (),
tmp->active ()));
}
}
// ----------------------------------------
ACE_Service_Gestalt::Processed_Static_Svc::
Processed_Static_Svc (const ACE_Static_Svc_Descriptor *assd)
:name_(0),
assd_(assd)
{
ACE_NEW_NORETURN (name_, ACE_TCHAR[ACE_OS::strlen(assd->name_)+1]);
ACE_OS::strcpy(name_,assd->name_);
}
ACE_Service_Gestalt::Processed_Static_Svc::~Processed_Static_Svc (void)
{
delete [] name_;
}
void
ACE_Service_Gestalt::intrusive_add_ref (ACE_Service_Gestalt* g)
{
if (g != 0)
{
++g->refcnt_;
ACE_ASSERT (g->refcnt_ > 0);
}
}
void
ACE_Service_Gestalt::intrusive_remove_ref (ACE_Service_Gestalt* g)
{
if (g != 0)
{
long tmp = --g->refcnt_;
if (tmp <= 0) delete g;
ACE_ASSERT (tmp >= 0);
}
}
ACE_Service_Gestalt::~ACE_Service_Gestalt (void)
{
if (this->svc_repo_is_owned_)
delete this->repo_;
this->repo_ =0;
delete this->static_svcs_;
this->static_svcs_ = 0;
// Delete the dynamically allocated static_svcs instance.
#ifndef ACE_NLOGGING
if (ACE::debug ())
ACELIB_DEBUG ((LM_DEBUG,
ACE_TEXT ("ACE (%P|%t) SG::~SG - this=%@, pss = %@\n"),
this, this->processed_static_svcs_));
#endif
if (this->processed_static_svcs_ &&
!this->processed_static_svcs_->is_empty())
{
Processed_Static_Svc **pss = 0;
for (ACE_PROCESSED_STATIC_SVCS_ITERATOR iter (*this->processed_static_svcs_);
iter.next (pss) != 0;
iter.advance ())
{
delete *pss;
}
}
delete this->processed_static_svcs_;
this->processed_static_svcs_ = 0;
delete this->svc_conf_file_queue_;
this->svc_conf_file_queue_ = 0;
delete this->svc_queue_;
this->svc_queue_ = 0;
}
ACE_Service_Gestalt::ACE_Service_Gestalt (size_t size,
bool svc_repo_is_owned,
bool no_static_svcs)
: svc_repo_is_owned_ (svc_repo_is_owned)
, svc_repo_size_ (size)
, is_opened_ (0)
, logger_key_ (ACE_DEFAULT_LOGGER_KEY)
, no_static_svcs_ (no_static_svcs)
, svc_queue_ (0)
, svc_conf_file_queue_ (0)
, repo_ (0)
, static_svcs_ (0)
, processed_static_svcs_ (0)
, refcnt_ (0)
{
(void)this->init_i ();
#ifndef ACE_NLOGGING
if (ACE::debug ())
ACELIB_DEBUG ((LM_DEBUG,
ACE_TEXT ("ACE (%P|%t) SG::ctor - this = %@, pss = %@\n"),
this, this->processed_static_svcs_));
#endif
}
/// Performs the common initialization tasks for a new or previously
/// closed instance. Must not be virtual, as it is also called from
/// the constructor.
int
ACE_Service_Gestalt::init_i (void)
{
// Only initialize the repo_ if (a) we are being constructed, or;
// (b) we're being open()-ed, perhaps after previously having been
// close()-ed. In both cases: repo_ == 0 and we need a repository.
if (this->repo_ == 0)
{
if (this->svc_repo_is_owned_)
{
ACE_NEW_RETURN (this->repo_,
ACE_Service_Repository (this->svc_repo_size_),
-1);
}
else
{
this->repo_ =
ACE_Service_Repository::instance (this->svc_repo_size_);
}
}
if (init_svc_conf_file_queue () == -1)
return -1;
return 0;
}
/// Add the default statically-linked services to the Service
/// Repository.
int
ACE_Service_Gestalt::load_static_svcs (void)
{
ACE_TRACE ("ACE_Service_Gestalt::load_static_svcs");
if (this->static_svcs_ == 0)
return 0; // Nothing to do
ACE_Static_Svc_Descriptor **ssdp = 0;
for (ACE_STATIC_SVCS_ITERATOR iter (*this->static_svcs_);
iter.next (ssdp) != 0;
iter.advance ())
{
ACE_Static_Svc_Descriptor *ssd = *ssdp;
if (this->process_directive (*ssd, 1) == -1)
return -1;
}
return 0;
} /* load_static_svcs () */
/// Find a static service descriptor by name
int
ACE_Service_Gestalt::find_static_svc_descriptor (const ACE_TCHAR* name,
ACE_Static_Svc_Descriptor **ssd) const
{
ACE_TRACE ("ACE_Service_Gestalt::find_static_svc_descriptor");
if (this->static_svcs_ == 0)
return -1;
ACE_Static_Svc_Descriptor **ssdp = 0;
for (ACE_STATIC_SVCS_ITERATOR iter ( *this->static_svcs_);
iter.next (ssdp) != 0;
iter.advance ())
{
if (ACE_OS::strcmp ((*ssdp)->name_, name) == 0)
{
if (ssd != 0)
*ssd = *ssdp;
return 0;
}
}
return -1;
}
/// @brief
const ACE_Static_Svc_Descriptor*
ACE_Service_Gestalt::find_processed_static_svc (const ACE_TCHAR* name)
{
if (this->processed_static_svcs_ == 0 || name == 0)
return 0;
Processed_Static_Svc **pss = 0;
for (ACE_PROCESSED_STATIC_SVCS_ITERATOR iter (*this->processed_static_svcs_);
iter.next (pss) != 0;
iter.advance ())
{
if (ACE_OS::strcmp ((*pss)->name_, name) == 0)
return (*pss)->assd_;
}
return 0;
}
/// @brief Captures a list of the direcives processed (explicitely) for this
/// Gestalt so that services can be replicated in other repositories
/// upon their first initialization.
///
/// This is part of the mechanism ensuring distinct local instances
/// for static service objects, loaded in another repository.
void
ACE_Service_Gestalt::add_processed_static_svc
(const ACE_Static_Svc_Descriptor *assd)
{
/// When process_directive(Static_Svc_Descriptor&) is called, it
/// associates a service object with the Gestalt and makes the
/// resource (a Service Object) local to the repository. This is but
/// the first step in using such SO. The next is the
/// "initialization" step. It is typicaly done through a "static"
/// service configuration directive.
///
/// In contrast a "dynamic" directive, when processed through the
/// overloaded process_directives(string) both creates the SO
/// locally and initializes it, where the statics directive must
/// first locate the SO and then calls the init() method. This means
/// that durig the "static" initialization there's no specific
/// information about the hosting repository and the gestalt must
/// employ some lookup strategy to find it elsewhere.
if (this->processed_static_svcs_ == 0)
ACE_NEW (this->processed_static_svcs_,
ACE_PROCESSED_STATIC_SVCS);
Processed_Static_Svc **pss = 0;
for (ACE_PROCESSED_STATIC_SVCS_ITERATOR iter (*this->processed_static_svcs_);
iter.next (pss) != 0;
iter.advance ())
{
if (ACE_OS::strcmp ((*pss)->name_, assd->name_) == 0)
{
(*pss)->assd_ = assd;
return;
}
}
Processed_Static_Svc *tmp = 0;
ACE_NEW (tmp,Processed_Static_Svc(assd));
this->processed_static_svcs_->insert(tmp);
if (ACE::debug ())
ACELIB_DEBUG ((LM_DEBUG,
ACE_TEXT ("ACE (%P|%t) SG::add_processed_static_svc, ")
ACE_TEXT ("repo=%@ - %s\n"),
this->repo_,
assd->name_));
}
/// Queues a static service object descriptor which, during open()
/// will be given to process_directive() to create the Service
/// Object. Normally, only called from static initializers, prior to
/// calling open() but loading a service from a DLL can cause it too.
int
ACE_Service_Gestalt::insert (ACE_Static_Svc_Descriptor *stsd)
{
if (this->static_svcs_ == 0)
ACE_NEW_RETURN (this->static_svcs_,
ACE_STATIC_SVCS,
-1);
return this->static_svcs_->insert (stsd);
}
ACE_ALLOC_HOOK_DEFINE (ACE_Service_Gestalt)
void
ACE_Service_Gestalt::dump (void) const
{
#if defined (ACE_HAS_DUMP)
ACE_TRACE ("ACE_Service_Gestalt::dump");
#endif /* ACE_HAS_DUMP */
}
int
ACE_Service_Gestalt::initialize (const ACE_TCHAR *svc_name,
const ACE_TCHAR *parameters)
{
ACE_TRACE ("ACE_Service_Gestalt_Base::initialize (repo)");
ACE_ARGV args (parameters);
#ifndef ACE_NLOGGING
if (ACE::debug ())
{
ACELIB_DEBUG ((LM_DEBUG,
ACE_TEXT ("ACE (%P|%t) SG::initialize - () repo=%@, ")
ACE_TEXT ("looking up static ")
ACE_TEXT ("service \'%s\' to initialize\n"),
this->repo_,
svc_name));
}
#endif
const ACE_Service_Type *srp = 0;
for (int i = 0; this->find (svc_name, &srp) == -1 && i < 2; i++)
// if (this->repo_->find (svc_name, &srp) == -1)
{
const ACE_Static_Svc_Descriptor *assd =
ACE_Service_Config::global()->find_processed_static_svc(svc_name);
if (assd != 0)
{
this->process_directive_i(*assd, 0);
}
else
{
ACELIB_ERROR_RETURN ((LM_ERROR,
ACE_TEXT ("ACE (%P|%t) ERROR: SG::initialize - service \'%s\'")
ACE_TEXT (" was not located.\n"),
svc_name),
-1);
}
}
if (srp == 0)
ACELIB_ERROR_RETURN ((LM_ERROR,
ACE_TEXT ("ACE (%P|%t) ERROR: SG::initialize - service \'%s\'")
ACE_TEXT (" was not located.\n"),
svc_name),
-1);
/// If initialization fails ...
if (srp->type ()->init (args.argc (),
args.argv ()) == -1)
{
// ... report and remove this entry.
ACELIB_ERROR ((LM_ERROR,
ACE_TEXT ("ACE (%P|%t) ERROR: SG::initialize - static init of \'%s\'")
ACE_TEXT (" failed (%p)\n"),
svc_name, ACE_TEXT ("error")));
this->repo_->remove (svc_name);
return -1;
}
// If everything is ok, activate it
const_cast<ACE_Service_Type *>(srp)->active (1);
return 0;
}
#if (ACE_USES_CLASSIC_SVC_CONF == 1)
int
ACE_Service_Gestalt::initialize (const ACE_Service_Type_Factory *stf,
const ACE_TCHAR *parameters)
{
ACE_TRACE ("ACE_Service_Gestalt::initialize");
#ifndef ACE_NLOGGING
if (ACE::debug ())
ACELIB_DEBUG ((LM_DEBUG,
ACE_TEXT ("ACE (%P|%t) SG::initialize - repo=%@, name=%s")
ACE_TEXT (" - looking up in the repo\n"),
this->repo_,
stf->name ()));
#endif
ACE_Service_Type *srp = 0;
int const retv = this->repo_->find (stf->name (),
(const ACE_Service_Type **) &srp);
// If there is an active service already, remove it first
// before it can be re-installed.
if (retv >= 0)
{
#ifndef ACE_NLOGGING
if (ACE::debug ())
ACELIB_DEBUG ((LM_WARNING,
ACE_TEXT ("ACE (%P|%t) SG::initialize - repo=%@,")
ACE_TEXT (" name=%s - removing a pre-existing namesake.\n"),
this->repo_,
stf->name ()));
#endif
this->repo_->remove (stf->name ());
}
// If there is an inactive service by that name it may have been
// either inactivated, or just a forward declaration for a service,
// that is in the process of being initialized. If it is the latter,
// then we have detected an attempt to initialize the same dynamic
// service while still processing previous attempt. This can lock up
// the process, because the ACE_DLL_Manager::open () is not
// re-entrant - it uses a Singleton lock to serialize concurent
// invocations. This use case must be handled here, because if the
// DLL_Manager was re-entrant we would have entered an infinite
// recursion here.
if (retv == -2 && srp->type () == 0)
ACELIB_ERROR_RETURN ((LM_WARNING,
ACE_TEXT ("ACE (%P|%t) SG::initialize - repo=%@,")
ACE_TEXT (" name=%s - forward-declared; ")
ACE_TEXT (" recursive initialization requests are")
ACE_TEXT (" ignored.\n"),
this->repo_,
stf->name ()),
-1);
// Reserve a spot for the dynamic service by inserting an incomplete
// service declaration, i.e. one that can not produce a service
// object if asked (a forward declaration). This declaration
// ensures maintaining the proper partial ordering of the services
// with respect to their finalization. For example, dependent static
// services must be registered *after* the dynamic service that
// loads them, so that their finalization is complete *before*
// finalizing the dynamic service.
ACE_Service_Type_Dynamic_Guard dummy (*this->repo_,
stf->name ());
// make_service_type() is doing the dynamic loading and also runs
// any static initializers
ACE_Auto_Ptr<ACE_Service_Type> tmp (stf->make_service_type (this));
if (tmp.get () != 0 &&
this->initialize_i (tmp.get (), parameters) == 0)
{
// All good. Tthe ACE_Service_Type instance is now owned by the
// repository and we should make sure it is not destroyed upon
// exit from this method.
tmp.release ();
return 0;
}
return -1;
}
#endif /* (ACE_USES_CLASSIC_SVC_CONF == 1) */
/// Dynamically link the shared object file and retrieve a pointer to
/// the designated shared object in this file.
/// @note This is obsolete (and error-prone) in the presense of dynamic
/// services with their own static services. This method will allow those
/// static services to register *before* the dynamic service that owns them.
/// Upon finalization of the static services the process may crash, because
/// the dynamic service's DLL may have been already released, together with
/// the memory in which the static services reside.
/// It may not crash, for instance, when the first static service to register
/// is the same as the dynamic service being loaded. You should be so lucky! ..
int
ACE_Service_Gestalt::initialize (const ACE_Service_Type *sr,
const ACE_TCHAR *parameters)
{
ACE_TRACE ("ACE_Service_Gestalt::initialize");
if (ACE::debug ())
ACELIB_DEBUG ((LM_DEBUG,
ACE_TEXT ("ACE (%P|%t) SG::initialize - repo=%@, name=%s")
ACE_TEXT (" - looking up in the repo\n"),
this->repo_,
sr->name ()));
ACE_Service_Type *srp = 0;
if (this->repo_->find (sr->name (),
(const ACE_Service_Type **) &srp) >= 0)
{
#ifndef ACE_NLOGGING
ACELIB_DEBUG ((LM_WARNING,
ACE_TEXT ("ACE (%P|%t) SG::initialize - repo=%@, name=%s")
ACE_TEXT (" - removing a pre-existing namesake.\n"),
this->repo_,
sr->name ()));
#endif
this->repo_->remove (sr->name ());
}
return this->initialize_i (sr, parameters);
}
/// Dynamically link the shared object file and retrieve a pointer to
/// the designated shared object in this file.
int
ACE_Service_Gestalt::initialize_i (const ACE_Service_Type *sr,
const ACE_TCHAR *parameters)
{
ACE_TRACE ("ACE_Service_Gestalt::initialize_i");
ACE_ARGV args (parameters);
if (sr->type ()->init (args.argc (),
args.argv ()) == -1)
{
// We just get ps to avoid having remove() delete it.
ACE_Service_Type *ps = 0;
this->repo_->remove (sr->name (), &ps);
#ifndef ACE_NLOGGING
// Not using LM_ERROR here to avoid confusing the test harness
if (ACE::debug ())
ACELIB_ERROR_RETURN ((LM_WARNING,
ACE_TEXT ("ACE (%P|%t) SG::initialize_i -")
ACE_TEXT (" repo=%@, name=%s - remove failed: %m\n"),
this->repo_,
sr->name ()),
-1);
#endif
return -1;
}
if (this->repo_->insert (sr) == -1)
{
#ifndef ACE_NLOGGING
// Not using LM_ERROR here to avoid confusing the test harness
if (ACE::debug ())
ACELIB_ERROR_RETURN ((LM_WARNING,
ACE_TEXT ("ACE (%P|%t) SG::initialize_i -")
ACE_TEXT (" repo=%@, name=%s - insert failed: %m\n"),
this->repo_,
sr->name ()),
-1);
#endif
return -1;
}
return 0;
}
// Totally remove <svc_name> from the daemon by removing it from the
// ACE_Reactor, and unlinking it if necessary.
int
ACE_Service_Gestalt::remove (const ACE_TCHAR svc_name[])
{
ACE_TRACE ("ACE_Service_Gestalt::remove");
if (this->repo_ == 0)
return -1;
return this->repo_->remove (svc_name);
}
/// Suspend @a svc_name. Note that this will not unlink the service
/// from the daemon if it was dynamically linked, it will mark it as
/// being suspended in the Service Repository and call the <suspend>
/// member function on the appropriate <ACE_Service_Object>. A service
/// can be resumed later on by calling the <resume> method...
int
ACE_Service_Gestalt::suspend (const ACE_TCHAR svc_name[])
{
ACE_TRACE ("ACE_Service_Gestalt::suspend");
if (this->repo_ == 0)
return -1;
return this->repo_->suspend (svc_name);
}
// Resume a SVC_NAME that was previously suspended or has not yet
// been resumed (e.g., a static service).
int
ACE_Service_Gestalt::resume (const ACE_TCHAR svc_name[])
{
ACE_TRACE ("ACE_Service_Gestalt::resume");
if (this->repo_ == 0)
return -1;
return this->repo_->resume (svc_name);
}
int
ACE_Service_Gestalt::process_directive (const ACE_Static_Svc_Descriptor &ssd,
bool force_replace)
{
int const result = process_directive_i (ssd, force_replace);
if (result == 0)
{
this->add_processed_static_svc(&ssd);
}
return result;
}
int
ACE_Service_Gestalt::process_directive_i (const ACE_Static_Svc_Descriptor &ssd,
bool force_replace)
{
if (this->repo_ == 0)
return -1;
if (!force_replace)
{
if (this->repo_->find (ssd.name_, 0, 0) >= 0)
{
// The service is already there, just return
return 0;
}
}
ACE_Service_Object_Exterminator gobbler;
void *sym = (ssd.alloc_)(&gobbler);
ACE_Service_Type_Impl *stp =
ACE_Service_Config::create_service_type_impl (ssd.name_,
ssd.type_,
sym,
ssd.flags_,
gobbler);
if (stp == 0)
return 0;
ACE_Service_Type *service_type = 0;
// This is just a temporary to force the compiler to use the right
// constructor in ACE_Service_Type. Note that, in cases where we are
// called from a static initializer which is part of a DLL, there is
// not enough information about the actuall DLL in this context.
ACE_DLL tmp_dll;
ACE_NEW_RETURN (service_type,
ACE_Service_Type (ssd.name_,
stp,
tmp_dll,
ssd.active_),
-1);
#ifndef ACE_NLOGGING
if (ACE::debug ())
ACELIB_DEBUG ((LM_DEBUG,
ACE_TEXT ("ACE (%P|%t) SG::process_directive_i, ")
ACE_TEXT ("repo=%@ - %s, dll=%s, force=%d\n"),
this->repo_,
ssd.name_,
(tmp_dll.dll_name_ == 0) ? ACE_TEXT ("<null>") : tmp_dll.dll_name_,
force_replace));
#endif
return this->repo_->insert (service_type);
}
#if (ACE_USES_CLASSIC_SVC_CONF == 1)
int
ACE_Service_Gestalt::process_directives_i (ACE_Svc_Conf_Param *param)
{
#ifndef ACE_NLOGGING
if (ACE::debug ())
ACELIB_DEBUG ((LM_DEBUG,
ACE_TEXT ("ACE (%P|%t) SG::process_directives_i, ")
ACE_TEXT ("repo=%@ - %s\n"),
this->repo_,
(param->type == ACE_Svc_Conf_Param::SVC_CONF_FILE)
? ACE_TEXT ("<from file>")
: param->source.directive));
#endif
// AC 970827 Skip the heap check because yacc allocates a buffer
// here which will be reported as a memory leak for some reason.
ACE_NO_HEAP_CHECK
// Were we called in the context of the current instance?
ACE_ASSERT (this == param->config);
// Temporarily (for the duration of this call) make sure that *any*
// static service registrations will happen with this instance. Such
// registrations are possible as a side-effect of dynamically
// loading a DLL, which has other static services registered. Thus
// this instance will own both the DLL and those static services,
// which implies that their finalization will be performed in the
// correct order, i.e. prior to finalizing the DLL
ACE_Service_Config_Guard guard (this);
::ace_yyparse (param);
// This is a hack, better errors should be provided...
if (param->yyerrno > 0)
{
// Always set the last error if ace_yyparse() fails.
// Other code may use errno to determine the type
// of problem that occurred from processing directives.
ACE_OS::last_error (EINVAL);
return param->yyerrno;
}
else
return 0;
}
#else
ACE_XML_Svc_Conf *
ACE_Service_Gestalt::get_xml_svc_conf (ACE_DLL &xmldll)
{
if (xmldll.open (ACE_TEXT ("ACEXML_XML_Svc_Conf_Parser")) == -1)
ACELIB_ERROR_RETURN ((LM_ERROR,
ACE_TEXT ("ACE (%P|%t) Failure to open ACEXML_XML_Svc_Conf_Parser: %p\n"),
ACE_TEXT("ACE_Service_Config::get_xml_svc_conf")),
0);
void * foo =
xmldll.symbol (ACE_TEXT ("_ACEXML_create_XML_Svc_Conf_Object"));
#if defined (ACE_OPENVMS) && (!defined (__INITIAL_POINTER_SIZE) || (__INITIAL_POINTER_SIZE < 64))
int const temp_p = reinterpret_cast<int> (foo);
#else
intptr_t const temp_p = reinterpret_cast<intptr_t> (foo);
#endif
ACE_XML_Svc_Conf::Factory factory = reinterpret_cast<ACE_XML_Svc_Conf::Factory> (temp_p);
if (factory == 0)
ACELIB_ERROR_RETURN ((LM_ERROR,
ACE_TEXT ("ACE (%P|%t) Unable to resolve factory: %p\n"),
xmldll.error ()),
0);
return factory ();
}
#endif /* ACE_USES_CLASSIC_SVC_CONF == 1 */
int
ACE_Service_Gestalt::process_file (const ACE_TCHAR file[])
{
ACE_TRACE ("ACE_Service_Gestalt::process_file");
// To avoid recursive processing of the same file and the same repository
// we maintain an implicit stack of dummy "services" named after the file
// being processed. Anytime we have to open a new file, we then can check
// to see if it is not already being processed by searching for a dummy
// service with a matching name.
if (this->repo_->find (file, 0, 0) >=0)
{
ACELIB_DEBUG ((LM_WARNING,
ACE_TEXT ("ACE (%P|%t) Configuration file %s is currently")
ACE_TEXT (" being processed. Ignoring recursive process_file().\n"),
file));
return 0;
}
// Register a dummy service as a forward decl, using the file name as name.
// The entry will be automaticaly removed once the thread exits this block.
ACE_Service_Type_Dynamic_Guard recursion_guard (*this->repo_,
file);
/*
* @TODO: Test with ACE_USES_CLASSIC_SVC_CONF turned off!
*/
#if (ACE_USES_CLASSIC_SVC_CONF == 1)
int result = 0;
FILE *fp = ACE_OS::fopen (file,
ACE_TEXT ("r"));
if (fp == 0)
{
// Invalid svc.conf file. We'll report it here and break out of
// the method.
if (ACE::debug ())
ACELIB_DEBUG ((LM_ERROR,
ACE_TEXT ("ACE (%P|%t): %p\n"),
file));
// Use stat to find out if the file exists. I didn't use access()
// because stat is better supported on most non-unix platforms.
ACE_stat exists;
if (ACE_OS::stat (file, &exists) == 0)
// If it exists, but we couldn't open it for reading then we
// must not have permission to read it.
errno = EPERM;
else
errno = ENOENT;
result = -1;
}
else
{
ACE_Svc_Conf_Param f (this, fp);
// Keep track of the number of errors.
result = this->process_directives_i (&f);
(void) ACE_OS::fclose (fp);
}
return result;
#else
ACE_DLL dll;
auto_ptr<ACE_XML_Svc_Conf> xml_svc_conf (this->get_xml_svc_conf (dll));
if (xml_svc_conf.get () == 0)
return -1;
return xml_svc_conf->parse_file (file);
#endif /* ACE_USES_CLASSIC_SVC_CONF == 1 */
}
int
ACE_Service_Gestalt::process_directive (const ACE_TCHAR directive[])
{
ACE_TRACE ("ACE_Service_Gestalt::process_directive");
#ifndef ACE_NLOGGING
if (ACE::debug ())
ACELIB_DEBUG ((LM_DEBUG,
ACE_TEXT ("ACE (%P|%t) SG::process_directive, repo=%@ - %s\n"),
this->repo_,
directive));
#endif
#if (ACE_USES_CLASSIC_SVC_CONF == 1)
ACE_UNUSED_ARG (directive);
ACE_Svc_Conf_Param d (this, directive);
return this->process_directives_i (&d);
#else
ACE_DLL dll;
auto_ptr<ACE_XML_Svc_Conf>
xml_svc_conf (this->get_xml_svc_conf (dll));
if (xml_svc_conf.get () == 0)
return -1;
// Temporarily (for the duration of this call) make sure that *any* static
// service registrations will happen with this instance. Such registrations
// are possible as a side-effect of dynamically loading a DLL, which has
// other static services registered. Thus this instance will own both the
// DLL and those static services, which implies that their finalization
// will be performed in the correct order, i.e. prior to finalizing the DLL
ACE_Service_Config_Guard guard (this);
return xml_svc_conf->parse_string (directive);
#endif /* ACE_USES_CLASSIC_SVC_CONF == 1 */
} /* process_directive () */
int
ACE_Service_Gestalt::init_svc_conf_file_queue (void)
{
if (this->svc_conf_file_queue_ == 0)
{
ACE_SVC_QUEUE *tmp = 0;
ACE_NEW_RETURN (tmp,
ACE_SVC_QUEUE,
-1);
this->svc_conf_file_queue_ = tmp;
}
#ifndef ACE_NLOGGING
if (ACE::debug ())
ACELIB_DEBUG ((LM_DEBUG,
ACE_TEXT ("ACE (%P|%t) SG::init_svc_conf_file_queue ")
ACE_TEXT ("- this=%@, repo=%@\n"),
this, this->repo_));
#endif
return 0;
} /* init_svc_conf_file_queue () */
int
ACE_Service_Gestalt::open_i (const ACE_TCHAR program_name[],
const ACE_TCHAR* logger_key,
bool ignore_static_svcs,
bool ignore_default_svc_conf_file,
bool ignore_debug_flag)
{
ACE_TRACE ("ACE_Service_Gestalt::open_i");
int result = 0;
ACE_Log_Msg *log_msg = ACE_LOG_MSG;
this->no_static_svcs_ = ignore_static_svcs;
// Record the current log setting upon entering this thread.
u_long old_process_mask = log_msg->priority_mask
(ACE_Log_Msg::PROCESS);
u_long old_thread_mask = log_msg->priority_mask
(ACE_Log_Msg::THREAD);
#ifndef ACE_NLOGGING
if (ACE::debug ())
ACELIB_DEBUG ((LM_DEBUG,
ACE_TEXT ("ACE (%P|%t) SG::open_i - this=%@, ")
ACE_TEXT ("opened=%d, loadstatics=%d\n"),
this, this->is_opened_, this->no_static_svcs_));
#endif
// Guard against reentrant processing. For example,
// if the singleton gestalt (ubergestalt) was already open,
// do not open it again...
if (this->is_opened_++ != 0)
return 0;
if (this->init_i () != 0)
return -1;
u_long flags = log_msg->flags ();
// Only use STDERR if the caller hasn't already set the flags.
if (flags == 0)
flags = (u_long) ACE_Log_Msg::STDERR;
const ACE_TCHAR *key = logger_key;
if (key == 0 || ACE_OS::strcmp (key, ACE_DEFAULT_LOGGER_KEY) == 0)
{
// Only use the static <logger_key_> if the caller doesn't
// override it in the parameter list or if the key supplied is
// equal to the default static logger key.
key = this->logger_key_;
}
else
{
ACE_SET_BITS (flags, ACE_Log_Msg::LOGGER);
}
if (log_msg->open (program_name,
flags,
key) == -1)
return -1;
if (!ignore_debug_flag)
{
// If -d was included as a startup parameter, the user wants debug
// information printed during service initialization.
if (ACE::debug ())
ACE_Log_Msg::enable_debug_messages ();
else
// The user has requested no debugging info.
ACE_Log_Msg::disable_debug_messages ();
}
if (!ignore_default_svc_conf_file)
{
bool add_default = true;
bool has_files = this->svc_conf_file_queue_ &&
!this->svc_conf_file_queue_->is_empty ();
bool has_cmdline = this->svc_queue_ && !this->svc_queue_->is_empty ();
if (has_files || has_cmdline)
{
// check if default file is already listed
ACE_TString *sptr = 0;
ACE_TString default_svc_conf (ACE_DEFAULT_SVC_CONF);
for (ACE_SVC_QUEUE_ITERATOR iter (*this->svc_conf_file_queue_);
iter.next (sptr) != 0 && add_default;
iter.advance ())
{
add_default = (*sptr != default_svc_conf);
}
if (add_default)
{
FILE *fp = ACE_OS::fopen (ACE_DEFAULT_SVC_CONF, ACE_TEXT ("r"));
if (fp != 0)
ACE_OS::fclose(fp);
else
add_default = false;
}
}
// Load the default "svc.conf" entry. here if there weren't
// overriding -f arguments in <parse_args>.
if (add_default && svc_conf_file_queue_->enqueue_head
(ACE_TString (ACE_DEFAULT_SVC_CONF)) == -1)
{
errno = ENOENT;
ACELIB_ERROR_RETURN ((LM_ERROR,
ACE_TEXT ("%p\n"),
ACE_TEXT ("enqueuing ")
ACE_DEFAULT_SVC_CONF
ACE_TEXT(" file")),
-1);
}
}
// See if we need to load the static services.
if (this->no_static_svcs_ == 0
&& this->load_static_svcs () == -1)
result = -1;
else
{
result = this->process_directives ();
if (result != -1)
{
int temp = this->process_commandline_directives ();
if (temp == -1)
result = -1;
else result += temp;
}
}
// Reset debugging back to the way it was when we came into
// into <open_i>.
{
// Make sure to save/restore errno properly.
ACE_Errno_Guard error (errno);
if (!ignore_debug_flag)
{
log_msg->priority_mask (old_process_mask, ACE_Log_Msg::PROCESS);
log_msg->priority_mask (old_thread_mask, ACE_Log_Msg::THREAD);
}
}
return result;
} /* open_i () */
int
ACE_Service_Gestalt::is_opened (void)
{
return this->is_opened_;
}
int
ACE_Service_Gestalt::process_commandline_directives (void)
{
int result = 0;
if (this->svc_queue_ != 0)
{
ACE_TString *sptr = 0;
for (ACE_SVC_QUEUE_ITERATOR iter (*this->svc_queue_);
iter.next (sptr) != 0;
iter.advance ())
{
// Process just a single directive.
if (this->process_directive ((sptr->fast_rep ())) != 0)
{
ACELIB_ERROR ((LM_ERROR,
ACE_TEXT ("ACE (%P|%t) %p\n"),
ACE_TEXT ("process_directive")));
result = -1;
}
}
delete this->svc_queue_;
this->svc_queue_ = 0;
}
return result;
} /* process_commandline_directives () */
int
ACE_Service_Gestalt::parse_args (int argc, ACE_TCHAR *argv[])
{
ACE_TRACE ("ACE_Service_Gestalt::parse_args");
bool unused_ignore_default_svc_conf = true;
return parse_args_i (argc, argv, unused_ignore_default_svc_conf);
}
int
ACE_Service_Gestalt::parse_args_i (int argc,
ACE_TCHAR *argv[],
bool &ignore_default_svc_conf_file)
{
ACE_TRACE ("ACE_Service_Gestalt::parse_args_i");
ACE_Get_Opt get_opt (argc,
argv,
ACE_TEXT ("df:k:nyS:"),
1); // Start at argv[1].
if (this->init_svc_conf_file_queue () == -1)
return -1;
for (int c; (argc != 0) && ((c = get_opt ()) != -1); )
switch (c)
{
case 'd':
ACE::debug (1);
break;
case 'f':
if (this->svc_conf_file_queue_->enqueue_tail (ACE_TString (get_opt.opt_arg ())) == -1)
ACELIB_ERROR_RETURN ((LM_ERROR,
ACE_TEXT ("%p\n"),
ACE_TEXT ("enqueue_tail")),
-1);
ignore_default_svc_conf_file = true;
break;
case 'k':
/*
* @TODO: Is this always a static storage? Shouldn't we copy
* & gain ownership of the value?
*/
this->logger_key_ = get_opt.opt_arg ();
break;
case 'n':
this->no_static_svcs_ = 1;
break;
case 'y':
this->no_static_svcs_ = 0;
break;
case 'S':
if (this->svc_queue_ == 0)
{
ACE_NEW_RETURN (this->svc_queue_,
ACE_SVC_QUEUE,
-1);
}
if (this->svc_queue_->enqueue_tail (ACE_TString (get_opt.opt_arg ())) == -1)
ACELIB_ERROR_RETURN ((LM_ERROR,
ACE_TEXT ("%p\n"),
ACE_TEXT ("enqueue_tail")),
-1);
break;
default:
if (ACE::debug ())
ACELIB_DEBUG ((LM_DEBUG,
ACE_TEXT ("ACE (%P|%t) %c is not a ACE_Service_Config option\n"),
c));
}
return 0;
} /* parse_args_i () */
// Process service configuration directives from the files queued for
// processing
int
ACE_Service_Gestalt::process_directives (bool )
{
ACE_TRACE ("ACE_Service_Gestalt::process_directives");
if (this->svc_conf_file_queue_ == 0
|| this->svc_conf_file_queue_->is_empty ())
{
return 0;
}
ACE_TString *sptr = 0;
int failed = 0;
// Iterate through all the svc.conf files.
for (ACE_SVC_QUEUE_ITERATOR iter (*this->svc_conf_file_queue_);
iter.next (sptr) != 0;
iter.advance ())
{
int result = this->process_file (sptr->fast_rep ());
if (result < 0)
return result;
failed += result;
}
return failed;
} /* process_directives () */
// Tidy up and perform last rites on a terminating ACE_Service_Gestalt.
int
ACE_Service_Gestalt::close (void)
{
ACE_TRACE ("ACE_Service_Gestalt::close");
if (!this->is_opened_ || --this->is_opened_ != 0)
return 0;
// Delete the list fo svc.conf files
delete this->svc_conf_file_queue_;
this->svc_conf_file_queue_ = 0;
if (this->processed_static_svcs_ &&
!this->processed_static_svcs_->is_empty())
{
Processed_Static_Svc **pss = 0;
for (ACE_PROCESSED_STATIC_SVCS_ITERATOR iter (*this->processed_static_svcs_);
iter.next (pss) != 0;
iter.advance ())
{
delete *pss;
}
}
delete this->processed_static_svcs_;
this->processed_static_svcs_ = 0;
#ifndef ACE_NLOGGING
if (ACE::debug ())
ACELIB_DEBUG ((LM_DEBUG,
ACE_TEXT ("ACE (%P|%t) SG::close - complete this=%@, repo=%@, owned=%d\n"),
this, this->repo_, this->svc_repo_is_owned_));
#endif
if (this->svc_repo_is_owned_)
delete this->repo_;
this->repo_ = 0;
return 0;
} /* close () */
ACE_END_VERSIONED_NAMESPACE_DECL
#if !defined (__ACE_INLINE__)
#include "ace/Service_Gestalt.inl"
#endif /* __ACE_INLINE__ */
// Allocate a Service Manager.
ACE_FACTORY_DEFINE (ACE, ACE_Service_Manager)
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