72 lines
1.4 KiB
C
72 lines
1.4 KiB
C
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#include "condiction.h"
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#include "kthread.h"
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#include "internal.h"
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#include "../interrupt/interrupt.h"
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#include "../memory/memory.h"
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smp_Condition *smp_Condition_Create() {
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smp_Condition *c = kMalloc(sizeof(smp_Condition));
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c->threads = vector_Create(sizeof(__smp_Thread *));
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return c;
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}
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void smp_Condition_Destroy(smp_Condition *c) {
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vector_Destroy(c->threads);
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kFree(c);
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}
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void *smp_Condition_Wait(smp_Condition *c) {
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INTERRUPT_DISABLE;
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__smp_Thread *t = __smp_Current[0];
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t->waitCondition = c;
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vector_Push(c->threads, &t);
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INTERRUPT_RESTORE;
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smp_thread_Yield();
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return 0;
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}
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bool smp_Condition_NotifyOne(smp_Condition *c, void *data) {
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INTERRUPT_DISABLE;
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uintptr_t size = vector_Size(c->threads);
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if (size == 0) {
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INTERRUPT_RESTORE;
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return false;
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}
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__smp_Thread *last = *(__smp_Thread **)vector_At(c->threads, size - 1);
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last->waitCondition = NULL;
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vector_Resize(c->threads, size - 1);
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INTERRUPT_RESTORE;
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return true;
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}
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// NotifyAll unblocks all waiting threads.
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//
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// The data is (for now) not sent.
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//
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// Returns the number of threads unblocked.
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int smp_Condition_NotifyAll(smp_Condition *c, void *data) {
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INTERRUPT_DISABLE;
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uintptr_t size = vector_Size(c->threads);
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if (size == 0) {
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INTERRUPT_RESTORE;
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return size;
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}
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for (uintptr_t i = 0; i < size; i++) {
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__smp_Thread *t = *(__smp_Thread **)vector_At(c->threads, i);
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t->waitCondition = NULL;
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}
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vector_Clear(c->threads);
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INTERRUPT_RESTORE;
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return true;
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}
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