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hopefully added semaphores

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Simon
2025-07-14 15:24:46 +02:00
parent 42f2dd6028
commit 9d525a9602
3 changed files with 18 additions and 14 deletions
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2
main.cc
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@@ -20,7 +20,7 @@
#include "arch/context.h" #include "arch/context.h"
#include "thread/thread.h" #include "thread/thread.h"
///TextStream kout = TextStream(0, 80, 0, 10, true); TextStream kout = TextStream(0, 80, 0, 10, true);
Ticketlock koutlock; Ticketlock koutlock;
//Scheduler sch; //Scheduler sch;

15
sync/semaphore.cc
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@@ -12,17 +12,18 @@ void Semaphore::p(Vault &vault) {
//resource is frei, läuft direkt weiter //resource is frei, läuft direkt weiter
if (vault.counter > 0) if (vault.counter > 0)
vault.counter--; vault.counter--;
//else else
/// thread block, zu aktueller queue hinzufügen und //thread block, zu aktueller queue hinzufügen und
// vault.sch.block(this); waiting.enqueue(*vault.sch.active()); //was is der calling thread
//
} }
//release //release
void Semaphore::v(Vault &vault) { void Semaphore::v(Vault &vault) {
//Thread* first = waiting.dequeue(); Thread* first = waiting.dequeue();
//if (first != nullptr) if (first != nullptr)
// void Scheduler::wakeup(first); vault.sch.ready(first); //wakeup "first" thread
//else else
vault.counter++; vault.counter++;
} }

15
user/app1/appl.cc
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@@ -9,9 +9,9 @@
#include "../../interrupt/guard.h" #include "../../interrupt/guard.h"
#include "../../debug/output.h" #include "../../debug/output.h"
#include "../../arch/context.h" #include "../../arch/context.h"
#include "../../sync/semaphore.h"
static uint8_t appl_cnt = 0; static uint8_t appl_cnt = 0;
extern TextStream kout;
char text[] = "Ich mag\n\ char text[] = "Ich mag\n\
Saftige Pflaumen voller Aroma\n\ Saftige Pflaumen voller Aroma\n\
Ich knuddel jede Oma ins Koma\n\ Ich knuddel jede Oma ins Koma\n\
@@ -33,18 +33,21 @@ void activeWaitDelay(uint64_t cycles) {
//Core::pause(); //Core::pause();
} }
} }
Semaphore foo= Semaphore(1);
void Application::action() { // NOLINT void Application::action() { // NOLINT
uint16_t cnt = 0; uint16_t cnt = 0;
uint8_t row = appl_cnt++; uint8_t row = appl_cnt++;
while (1) { while (1) {
Guarded g= Guard::enter();
//koutlock.lock(); //koutlock.lock();
{ {
Guarded g = Guard::enter();
//g.vault(); //g.vault();
g.vault().kout.setPos((unsigned)8*row,(unsigned)/*Core::getID()*2+*/1); foo.p(g.vault());
g.vault().kout << cnt++ << flush; kout.setPos((unsigned)8*row,(unsigned)/*Core::getID()*2+*/1);
kout << cnt++ << flush;
foo.v(g.vault());
//g.vault().kout << endl << flush; //g.vault().kout << endl << flush;
//Guard::leave(); //Guard::leave();
//koutlock.unlock(); //koutlock.unlock();