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kernel/process: Make Process a WaitObject

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Process instances can be waited upon for state changes. This is also
utilized by svcResetSignal, which will be modified in an upcoming
change. This simply puts all of the WaitObject related machinery in
place.
This commit is contained in:
Lioncash
2018-12-04 19:08:56 -05:00
parent a3aa7aaf0b
commit c7462ce712
3 changed files with 68 additions and 6 deletions
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42
src/core/hle/kernel/process.cpp
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@ -9,6 +9,7 @@
#include "common/logging/log.h"
#include "core/core.h"
#include "core/file_sys/program_metadata.h"
#include "core/hle/kernel/errors.h"
#include "core/hle/kernel/kernel.h"
#include "core/hle/kernel/process.h"
#include "core/hle/kernel/resource_limit.h"
@ -48,6 +49,21 @@ SharedPtr<ResourceLimit> Process::GetResourceLimit() const {
return resource_limit;
}
ResultCode Process::ClearSignalState() {
if (status == ProcessStatus::Exited) {
LOG_ERROR(Kernel, "called on a terminated process instance.");
return ERR_INVALID_STATE;
}
if (!is_signaled) {
LOG_ERROR(Kernel, "called on a process instance that isn't signaled.");
return ERR_INVALID_STATE;
}
is_signaled = false;
return RESULT_SUCCESS;
}
void Process::LoadFromMetadata(const FileSys::ProgramMetadata& metadata) {
program_id = metadata.GetTitleID();
is_64bit_process = metadata.Is64BitProgram();
@ -137,13 +153,13 @@ void Process::Run(VAddr entry_point, s32 main_thread_priority, u32 stack_size) {
.Unwrap();
vm_manager.LogLayout();
status = ProcessStatus::Running;
ChangeStatus(ProcessStatus::Running);
Kernel::SetupMainThread(kernel, entry_point, main_thread_priority, *this);
}
void Process::PrepareForTermination() {
status = ProcessStatus::Exited;
ChangeStatus(ProcessStatus::Exiting);
const auto stop_threads = [this](const std::vector<SharedPtr<Thread>>& thread_list) {
for (auto& thread : thread_list) {
@ -167,6 +183,8 @@ void Process::PrepareForTermination() {
stop_threads(system.Scheduler(1).GetThreadList());
stop_threads(system.Scheduler(2).GetThreadList());
stop_threads(system.Scheduler(3).GetThreadList());
ChangeStatus(ProcessStatus::Exited);
}
/**
@ -265,7 +283,25 @@ ResultCode Process::UnmapMemory(VAddr dst_addr, VAddr /*src_addr*/, u64 size) {
return vm_manager.UnmapRange(dst_addr, size);
}
Kernel::Process::Process(KernelCore& kernel) : Object{kernel} {}
Kernel::Process::Process(KernelCore& kernel) : WaitObject{kernel} {}
Kernel::Process::~Process() {}
void Process::Acquire(Thread* thread) {
ASSERT_MSG(!ShouldWait(thread), "Object unavailable!");
}
bool Process::ShouldWait(Thread* thread) const {
return !is_signaled;
}
void Process::ChangeStatus(ProcessStatus new_status) {
if (status == new_status) {
return;
}
status = new_status;
is_signaled = true;
WakeupAllWaitingThreads();
}
} // namespace Kernel