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systemc: Implement sc_semaphore.

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Change-Id: I778d41bd81880e76caa71dc92359a00127d8f987
Reviewed-on: https://gem5-review.googlesource.com/c/12617
Reviewed-by: Gabe Black <gabeblack@google.com>
Maintainer: Gabe Black <gabeblack@google.com>
This commit is contained in:
Gabe Black
2018-09-11 01:51:00 -07:00
parent 8454330257
commit 055b8df385
2 changed files with 18 additions and 16 deletions
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28
src/systemc/channel/sc_semaphore.cc
View File

@@ -34,43 +34,41 @@
namespace sc_core
{
sc_semaphore::sc_semaphore(int) :
sc_semaphore::sc_semaphore(int value) :
sc_interface(), sc_semaphore_if(),
sc_object(sc_gen_unique_name("semaphore"))
sc_object(sc_gen_unique_name("semaphore")), _value(value)
{}
sc_semaphore::sc_semaphore(const char *name, int) :
sc_interface(), sc_semaphore_if(), sc_object(name)
sc_semaphore::sc_semaphore(const char *name, int value) :
sc_interface(), sc_semaphore_if(), sc_object(name), _value(value)
{}
int
sc_semaphore::wait()
{
warn("%s not implemented.\n", __PRETTY_FUNCTION__);
while (trywait() == -1)
::sc_core::wait(posted);
return 0;
}
int
sc_semaphore::trywait()
{
warn("%s not implemented.\n", __PRETTY_FUNCTION__);
if (!_value)
return -1;
_value--;
return 0;
}
int
sc_semaphore::post()
{
warn("%s not implemented.\n", __PRETTY_FUNCTION__);
if (_value++ == 0)
posted.notify();
return 0;
}
int
sc_semaphore::get_value() const
{
warn("%s not implemented.\n", __PRETTY_FUNCTION__);
return 0;
}
const char *sc_semaphore::kind() const { return "sc_semaphore"; }
int sc_semaphore::get_value() const { return _value; }
} // namespace sc_core

6
src/systemc/ext/channel/sc_semaphore.hh
View File

@@ -30,6 +30,7 @@
#ifndef __SYSTEMC_EXT_CHANNEL_SC_SEMAPHORE_HH__
#define __SYSTEMC_EXT_CHANNEL_SC_SEMAPHORE_HH__
#include "../core/sc_event.hh"
#include "../core/sc_object.hh"
#include "sc_semaphore_if.hh"
@@ -47,7 +48,7 @@ class sc_semaphore : public sc_semaphore_if, public sc_object
virtual int post();
virtual int get_value() const;
virtual const char *kind() const;
virtual const char *kind() const { return "sc_semaphore"; }
private:
// Disabled
@@ -56,6 +57,9 @@ class sc_semaphore : public sc_semaphore_if, public sc_object
{}
sc_semaphore &operator = (const sc_semaphore &) { return *this; }
int _value;
sc_event posted;
};
} // namespace sc_core