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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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@ -0,0 +1,31 @@
#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;
}

9
zion/syscall/synchronization.h Normal file
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@ -0,0 +1,9 @@
#pragma once
#include <glacier/status/error.h>
#include "include/zcall.h"
glcr::ErrorCode MutexCreate(ZMutexCreateReq* req);
glcr::ErrorCode MutexLock(ZMutexLockReq* req);
glcr::ErrorCode MutexRelease(ZMutexReleaseReq* req);

5
zion/syscall/syscall.cpp
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@ -11,6 +11,7 @@
#include "syscall/ipc.h"
#include "syscall/memory_object.h"
#include "syscall/process.h"
#include "syscall/synchronization.h"
#include "syscall/thread.h"
#define EFER 0xC0000080
@ -80,6 +81,10 @@ extern "C" z_err_t SyscallHandler(uint64_t call_id, void* req) {
CASE(ReplyPortRecv);
// syscall/capability.h
CASE(CapDuplicate);
// syscall/syncronization.h
CASE(MutexCreate);
CASE(MutexLock);
CASE(MutexRelease);
// syscall/debug.h
CASE(Debug);
default: