void Scheduler::waitForFreeKMMLock() //not as severe as stopping Interrupts
{
if ( block_scheduling_==0 )
arch_panic ( ( uint8* ) "FATAL ERROR: Scheduler::waitForFreeKMMLock: This is meant to be used while Scheduler is locked\n" );
while ( ! KernelMemoryManager::instance()->isKMMLockFree() )
{
unlockScheduling();
yield();
lockScheduling();
}
}
/* Simple sbrk function */
void* mm_sbrk(unsigned long increment) {
int old;
void *base = sbrk_base;
old = irq_disable();
if(increment & 3)
increment = (increment + 4) & ~3;
sbrk_base = (void *)(increment + (unsigned long)sbrk_base);
if(((uint32)sbrk_base) >= (0x8d000000 - 65536)) {
dbglog(DBG_DEAD, "Requested sbrk_base %p, was %p, diff %lu\n",
sbrk_base, base, increment);
arch_panic("out of memory; about to run over kernel stack");
}
irq_restore(old);
return base;
}
void Scheduler::lockScheduling() //not as severe as stopping Interrupts
{
if ( unlikely ( ArchThreads::testSetLock ( block_scheduling_,1 ) ) )
arch_panic ( ( uint8* ) "FATAL ERROR: Scheduler::*: block_scheduling_ was set !! How the Hell did the program flow get here then ?\n" );
}
