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[Zion] Add a mutex object with appropriate syscalls.

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This commit is contained in:
Drew Galbraith 2023-10-25 14:47:45 -07:00
parent 4c2237fa72
commit 4c04f9d561
19 changed files with 160 additions and 60 deletions
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31
zion/syscall/synchronization.cpp Normal file
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#include "syscall/synchronization.h"
#include "object/mutex.h"
#include "scheduler/scheduler.h"
glcr::ErrorCode MutexCreate(ZMutexCreateReq* req) {
auto& curr_proc = gScheduler->CurrentProcess();
*req->mutex_cap = curr_proc.AddNewCapability(Mutex::Create());
return glcr::OK;
}
glcr::ErrorCode MutexLock(ZMutexLockReq* req) {
auto& curr_proc = gScheduler->CurrentProcess();
auto cap = curr_proc.GetCapability(req->mutex_cap);
RET_ERR(ValidateCapability<Mutex>(cap, kZionPerm_Lock));
auto mutex = cap->obj<Mutex>();
mutex->Lock();
return glcr::OK;
}
glcr::ErrorCode MutexRelease(ZMutexReleaseReq* req) {
auto& curr_proc = gScheduler->CurrentProcess();
auto cap = curr_proc.GetCapability(req->mutex_cap);
// TODO: We may not want a separate permission for releasing the mutex.
RET_ERR(ValidateCapability<Mutex>(cap, kZionPerm_Release));
auto mutex = cap->obj<Mutex>();
mutex->Release();
return glcr::OK;
}