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#include "EC_Thread_Flags.h"
ACE_RCSID(Event, EC_Thread_Flags , "$Id$");
#if 0
#include "ace/Obstack.h"
#endif
#include "ace/OS.h" // OS_NS_Thread.h in later versions
#include "ace/OS_String.h" // OS_NS_String.h in later versions
#include "ace/Sched_Params.h"
#define TETFSF(flag) { #flag, flag }
TAO_EC_Thread_Flags::Supported_Flag TAO_EC_Thread_Flags::supported_flags_[] = {
#if defined (ACE_HAS_THREADS)
TETFSF(THR_CANCEL_DISABLE),
TETFSF(THR_CANCEL_ENABLE),
TETFSF(THR_CANCEL_DEFERRED),
TETFSF(THR_CANCEL_ASYNCHRONOUS),
TETFSF(THR_BOUND),
TETFSF(THR_NEW_LWP),
TETFSF(THR_DETACHED),
TETFSF(THR_SUSPENDED),
TETFSF(THR_DAEMON),
TETFSF(THR_JOINABLE),
TETFSF(THR_SCHED_FIFO),
TETFSF(THR_SCHED_RR),
TETFSF(THR_SCHED_DEFAULT),
TETFSF(THR_EXPLICIT_SCHED),
TETFSF(THR_SCOPE_SYSTEM),
TETFSF(THR_SCOPE_PROCESS)
#endif /* ACE_HAS_THREADS */
};
#undef TETFSF
TAO_EC_Thread_Flags::~TAO_EC_Thread_Flags ()
{
#if 0
ACE_GUARD (TAO_SYNCH_MUTEX, ace_mon, this->sf_lock_);
delete[] this->supported_flags_;
this->supported_flags_ = 0;
#endif
}
#if 0
const char* const
TAO_EC_Thread_Flags::supported_flags () const
{
if (supported_flags_ == 0)
{
ACE_GUARD_RETURN (TAO_SYNCH_MUTEX, ace_mon, this->sf_lock_, 0);
// Check again, b/c somebody else could have stuffed somethign
// there before we got the lock.
if (supported_flags_ == 0)
{
ACE_Obstack o;
size_t num_flags = sizeof(Supported_Flags)/sizeof(Supported_Flags[0]);
for (size_t i = 0; i < num_flags; ++i)
{
const char* sym = Supported_Flags[i].n;
while (*sym != 0)
{
o.grow(*sym++);
}
o.grow ('|');
}
char* f = o.freeze ();
size_t l = ACE_OS_String::strlen(f);
this->supported_flags_ = new char[l+1];
ACE_OS_String::strcpy (this->supported_flags_, f, l);
}
}
return this->supported_flags_;
}
#endif
void
TAO_EC_Thread_Flags::parse_symbols (const char* syms)
{
// PRE: we assume nothing other than that syms is valid
// POST:
// 1. flags_ is bitwise-OR of all flags
// 2. sched_ is THR_SCHED_*, or THR_SCHED_DEFAULT if not specified
// 3. scope_ is THR_SCOPE_*, or THR_SCOPE_PROCESS if not specified
// NOTE: I'm not sure if #2 and #3 are consistent with what happens
// in ACE_Task::activate. I really need to double-check that, and
// make sure that they are consistent.
flags_ = scope_ = sched_ = 0; // zero out everything
// short-circuit on the trivial case
if (syms == 0 || *syms == '\0')
return;
static size_t num_flags = sizeof(supported_flags_)/sizeof(Supported_Flag);
char* s = ACE_OS_String::strdup (syms); // need a mutable string
if (s == 0)
return;
const char* SEPARATORS = " |"; // this should probably be at class level
char* ptr = 0;
char* tok = ACE_OS_String::strtok_r (s, SEPARATORS, &ptr);
while (tok != 0)
{
// This would allow for easy accomodation of flags that
// aren't currently supported, but is it a good idea?
if (tok[0] >= '0' && tok[0] <= '9') // Numeric, so just accept it!
{
// parse it as a long straight to the flags
// If somebody specifies the scheduler this way, then they
// lose range checking on the priority. Bummer, but those
// are the breaks.
this->flags_ |= ACE_OS_String::strtol (tok, 0, 0);
}
else
{
int found = 0;
for (size_t i = 0; !found && i < num_flags; ++i)
{
if (ACE_OS_String::strcasecmp (tok, supported_flags_[i].n) == 0)
{
this->flags_ |= supported_flags_[i].v;
// Can't use a switch for this b/c for some
// platforms the THR_* constants end up with
// the same values, and compiles get upset.
long &sf = supported_flags_[i].v;
if (sf == THR_SCHED_FIFO ||
sf == THR_SCHED_RR ||
sf == THR_SCHED_DEFAULT)
{
this->sched_ = supported_flags_[i].v;
}
else if (sf == THR_SCOPE_SYSTEM ||
sf == THR_SCOPE_PROCESS)
{
this->scope_ = supported_flags_[i].v;
}
found = 1;
}
}
if (!found)
{
// Ideally this would call some sort of on-error function...
// but, it doesn't.
ACE_ERROR ((LM_ERROR,
"RTEC (%P|%t) unable to parse %s as a thread flag - skipping\n",
tok));
}
}
tok = ACE_OS_String::strtok_r (0, SEPARATORS, &ptr);
}
ACE_OS::free (s); // clean up after ourselves
}
#if 0
long
TAO_EC_Thread_Flags::ace_sched_from_thr_sched (long thr_sched) const
{
long ace_sched =
(thr_sched == THR_SCHED_FIFO) ? ACE_SCHED_FIFO :
(thr_sched == THR_SCHED_RR) ? ACE_SCHED_RR :
ACE_SCHED_OTHER;
return ace_sched;
}
long
TAO_EC_Thread_Flags::ace_scope_from_thr_scope (long thr_scope) const
{
long ace_scope =
(thr_scope == THR_SCOPE_PROCESS) ? ACE_SCOPE_PROCESS :
(thr_scope == THR_SCOPE_SYSTEM) ? ACE_SCOPE_SYSTEM :
ACE_SCOPE_THREAD;
return ace_scope;
}
long
TAO_EC_Thread_Flags::thr_sched_from_ace_sched (long ace_sched) const
{
long thr_sched =
(ace_sched == ACE_SCHED_FIFO) ? THR_SCHED_FIFO :
(ace_sched == ACE_SCHED_RR) ? THR_SCHED_RR :
THR_SCHED_DEFAULT; // there is no THR_SCHED_OTHER for some reason
return thr_sched;
}
long
TAO_EC_Thread_Flags::thr_scope_from_ace_scope (long ace_scope) const
{
long thr_scope =
(ace_scope == ACE_SCOPE_PROCESS) ? THR_SCOPE_PROCESS :
(ace_scope == ACE_SCOPE_THREAD) ? THR_SCOPE_THREAD :
THR_SCOPE_SYSTEM;
return thr_scope;
}
int
TAO_EC_Thread_Flags::is_valid_priority (long priority) const
{
// For some wacked out reason the THR_SCHED_* values are different from
// the ACE_SCHED_* values. And, more than likely, the same is true for
// the *_SCOPE_* values, too. So, here we convert the THR values, which
// are in
const long ace_sched = ace_sched_from_thr_sched (this->sched());
const long ace_scope = ace_scope_from_thr_scope (this->scope());
if (this->sched() != 0 && // we have a scheduler
priority < ACE_Sched_Params::priority_min (ace_sched, ace_scope) ||
priority > ACE_Sched_Params::priority_max (ace_sched, ace_scope))
return 0;
else
return 1;
}
#endif
long
TAO_EC_Thread_Flags::default_priority () const
{
long priority = ACE_DEFAULT_THREAD_PRIORITY;
// use the implementation
if (this->sched() == 0)
return priority;
priority =
ACE_Sched_Params::priority_min (this->sched()) +
ACE_Sched_Params::priority_max (this->sched()) / 2;
priority = ACE_Sched_Params::next_priority (this->sched(), priority);
return priority;
}
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