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authorbunnei <bunneidev@gmail.com>2021-02-01 01:55:11 +0100
committerbunnei <bunneidev@gmail.com>2021-02-05 23:03:36 +0100
commiteba3c59a611962a1b019a5edfbc16c8d6db58be9 (patch)
tree01bf9363df380825ad1b13f22e8944ffbc460682 /src/core/hle/kernel/svc.cpp
parentcommon: scope_exit: Add a cancellable ScopeExit macro. (diff)
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Diffstat (limited to 'src/core/hle/kernel/svc.cpp')
-rw-r--r--src/core/hle/kernel/svc.cpp135
1 files changed, 78 insertions, 57 deletions
diff --git a/src/core/hle/kernel/svc.cpp b/src/core/hle/kernel/svc.cpp
index 9d036f45d..edf208eff 100644
--- a/src/core/hle/kernel/svc.cpp
+++ b/src/core/hle/kernel/svc.cpp
@@ -14,6 +14,7 @@
#include "common/fiber.h"
#include "common/logging/log.h"
#include "common/microprofile.h"
+#include "common/scope_exit.h"
#include "common/string_util.h"
#include "core/arm/exclusive_monitor.h"
#include "core/core.h"
@@ -1726,20 +1727,28 @@ static ResultCode CloseHandle32(Core::System& system, Handle handle) {
static ResultCode ResetSignal(Core::System& system, Handle handle) {
LOG_DEBUG(Kernel_SVC, "called handle 0x{:08X}", handle);
+ // Get the current handle table.
const auto& handle_table = system.Kernel().CurrentProcess()->GetHandleTable();
- auto event = handle_table.Get<KReadableEvent>(handle);
- if (event) {
- return event->Reset();
+ // Try to reset as readable event.
+ {
+ auto readable_event = handle_table.Get<KReadableEvent>(handle);
+ if (readable_event) {
+ return readable_event->Reset();
+ }
}
- auto process = handle_table.Get<Process>(handle);
- if (process) {
- return process->ClearSignalState();
+ // Try to reset as process.
+ {
+ auto process = handle_table.Get<Process>(handle);
+ if (process) {
+ return process->Reset();
+ }
}
- LOG_ERROR(Kernel_SVC, "Invalid handle (0x{:08X})", handle);
- return ERR_INVALID_HANDLE;
+ LOG_ERROR(Kernel_SVC, "invalid handle (0x{:08X})", handle);
+
+ return Svc::ResultInvalidHandle;
}
static ResultCode ResetSignal32(Core::System& system, Handle handle) {
@@ -1867,80 +1876,92 @@ static ResultCode SetThreadCoreMask32(Core::System& system, Handle thread_handle
return SetThreadCoreMask(system, thread_handle, core_id, affinity_mask);
}
-static ResultCode CreateEvent(Core::System& system, Handle* write_handle, Handle* read_handle) {
- LOG_DEBUG(Kernel_SVC, "called");
+static ResultCode SignalEvent(Core::System& system, Handle event_handle) {
+ LOG_DEBUG(Kernel_SVC, "called, event_handle=0x{:08X}", event_handle);
- auto& kernel = system.Kernel();
- const auto event = KEvent::Create(kernel, "CreateEvent");
- event->Initialize();
+ // Get the current handle table.
+ const HandleTable& handle_table = system.Kernel().CurrentProcess()->GetHandleTable();
- HandleTable& handle_table = kernel.CurrentProcess()->GetHandleTable();
+ // Get the writable event.
+ auto writable_event = handle_table.Get<KWritableEvent>(event_handle);
+ R_UNLESS(writable_event, Svc::ResultInvalidHandle);
- const auto write_create_result = handle_table.Create(event->GetWritableEvent());
- if (write_create_result.Failed()) {
- return write_create_result.Code();
- }
- *write_handle = *write_create_result;
-
- const auto read_create_result = handle_table.Create(event->GetReadableEvent());
- if (read_create_result.Failed()) {
- handle_table.Close(*write_create_result);
- return read_create_result.Code();
- }
- *read_handle = *read_create_result;
-
- LOG_DEBUG(Kernel_SVC,
- "successful. Writable event handle=0x{:08X}, Readable event handle=0x{:08X}",
- *write_create_result, *read_create_result);
- return RESULT_SUCCESS;
+ return writable_event->Signal();
}
-static ResultCode CreateEvent32(Core::System& system, Handle* write_handle, Handle* read_handle) {
- return CreateEvent(system, write_handle, read_handle);
+static ResultCode SignalEvent32(Core::System& system, Handle event_handle) {
+ return SignalEvent(system, event_handle);
}
-static ResultCode ClearEvent(Core::System& system, Handle handle) {
- LOG_TRACE(Kernel_SVC, "called, event=0x{:08X}", handle);
+static ResultCode ClearEvent(Core::System& system, Handle event_handle) {
+ LOG_TRACE(Kernel_SVC, "called, event_handle=0x{:08X}", event_handle);
+ // Get the current handle table.
const auto& handle_table = system.Kernel().CurrentProcess()->GetHandleTable();
- auto writable_event = handle_table.Get<KWritableEvent>(handle);
- if (writable_event) {
- writable_event->Clear();
- return RESULT_SUCCESS;
+ // Try to clear the writable event.
+ {
+ auto writable_event = handle_table.Get<KWritableEvent>(event_handle);
+ if (writable_event) {
+ return writable_event->Clear();
+ }
}
- auto readable_event = handle_table.Get<KReadableEvent>(handle);
- if (readable_event) {
- readable_event->Clear();
- return RESULT_SUCCESS;
+ // Try to clear the readable event.
+ {
+ auto readable_event = handle_table.Get<KReadableEvent>(event_handle);
+ if (readable_event) {
+ return readable_event->Clear();
+ }
}
- LOG_ERROR(Kernel_SVC, "Event handle does not exist, handle=0x{:08X}", handle);
- return ERR_INVALID_HANDLE;
+ LOG_ERROR(Kernel_SVC, "Event handle does not exist, event_handle=0x{:08X}", event_handle);
+
+ return Svc::ResultInvalidHandle;
}
-static ResultCode ClearEvent32(Core::System& system, Handle handle) {
- return ClearEvent(system, handle);
+static ResultCode ClearEvent32(Core::System& system, Handle event_handle) {
+ return ClearEvent(system, event_handle);
}
-static ResultCode SignalEvent(Core::System& system, Handle handle) {
- LOG_DEBUG(Kernel_SVC, "called. Handle=0x{:08X}", handle);
+static ResultCode CreateEvent(Core::System& system, Handle* out_write, Handle* out_read) {
+ LOG_DEBUG(Kernel_SVC, "called");
- HandleTable& handle_table = system.Kernel().CurrentProcess()->GetHandleTable();
- auto writable_event = handle_table.Get<KWritableEvent>(handle);
+ // Get the kernel reference and handle table.
+ auto& kernel = system.Kernel();
+ HandleTable& handle_table = kernel.CurrentProcess()->GetHandleTable();
- if (!writable_event) {
- LOG_ERROR(Kernel_SVC, "Non-existent writable event handle used (0x{:08X})", handle);
- return ERR_INVALID_HANDLE;
+ // Create a new event.
+ const auto event = KEvent::Create(kernel, "CreateEvent");
+ R_UNLESS(event != nullptr, Svc::ResultOutOfResource);
+
+ // Initialize the event.
+ event->Initialize();
+
+ // Add the writable event to the handle table.
+ const auto write_create_result = handle_table.Create(event->GetWritableEvent());
+ if (write_create_result.Failed()) {
+ return write_create_result.Code();
+ }
+ *out_write = *write_create_result;
+
+ // Add the writable event to the handle table.
+ auto handle_guard = SCOPE_GUARD({ handle_table.Close(*write_create_result); });
+
+ // Add the readable event to the handle table.
+ const auto read_create_result = handle_table.Create(event->GetReadableEvent());
+ if (read_create_result.Failed()) {
+ return read_create_result.Code();
}
+ *out_read = *read_create_result;
- writable_event->Signal();
+ // We succeeded.
+ handle_guard.Cancel();
return RESULT_SUCCESS;
}
-static ResultCode SignalEvent32(Core::System& system, Handle handle) {
- return SignalEvent(system, handle);
+static ResultCode CreateEvent32(Core::System& system, Handle* out_write, Handle* out_read) {
+ return CreateEvent(system, out_write, out_read);
}
static ResultCode GetProcessInfo(Core::System& system, u64* out, Handle process_handle, u32 type) {