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Start with sceIoOpenAsync() cleaning up async io.

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Now it actually fires the callback as necessary.  Some games care.
This commit is contained in:
Unknown W. Brackets 2013-03-10 00:02:36 -08:00
parent 29504da03b
commit 60e6fa514a
1 changed files with 28 additions and 2 deletions
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30
Core/HLE/sceIo.cpp
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@ -25,6 +25,7 @@
#include "HLE.h"
#include "../MIPS/MIPS.h"
#include "../HW/MemoryStick.h"
#include "Core/CoreTiming.h"
#include "../FileSystems/FileSystem.h"
#include "../FileSystems/MetaFileSystem.h"
@ -90,6 +91,7 @@ typedef u64 SceIores;
typedef u32 (*DeferredAction)(SceUID id, int param);
DeferredAction defAction = 0;
u32 defParam = 0;
int asyncNotifyEvent = -1;
#define SCE_STM_FDIR 0x1000
#define SCE_STM_FREG 0x2000
@ -187,15 +189,35 @@ public:
/******************************************************************************/
void __IoCompleteAsyncIO(SceUID id);
static void TellFsThreadEnded (SceUID threadID) {
pspFileSystem.ThreadEnded(threadID);
}
// Async IO seems to work roughly like this:
// 1. Game calls SceIo*Async() to start the process.
// 2. This runs a thread with a customizable priority.
// 3. The operation runs, which takes an inconsistent amount of time from UMD.
// 4. Once done (regardless of other syscalls), the fd-registered callback is notified.
// 5. The game can find out via *CB() or sceKernelCheckCallback().
// 6. At this point, the fd is STILL not usable.
// 7. One must call sceIoWaitAsync / sceIoWaitAsyncCB / sceIoPollAsync / possibly sceIoGetAsyncStat.
// 8. Finally, the fd is usable (or closed via sceIoCloseAsync.) Presumably the io thread has joined now.
// TODO: We don't do any of that yet.
// For now, let's at least delay the callback mnotification.
void __IoAsyncNotify(u64 userdata, int cyclesLate) {
__IoCompleteAsyncIO((SceUID) userdata);
}
void __IoInit() {
INFO_LOG(HLE, "Starting up I/O...");
MemoryStick_SetFatState(PSP_FAT_MEMORYSTICK_STATE_ASSIGNED);
asyncNotifyEvent = CoreTiming::RegisterEvent("IoAsyncNotify", __IoAsyncNotify);
#ifdef _WIN32
char path_buffer[_MAX_PATH], drive[_MAX_DRIVE] ,dir[_MAX_DIR], file[_MAX_FNAME], ext[_MAX_EXT];
@ -242,6 +264,9 @@ void __IoDoState(PointerWrap &p) {
if (defAction != NULL) {
WARN_LOG(HLE, "FIXME: Savestate failure: deferred IO not saved yet.");
}
p.Do(asyncNotifyEvent);
CoreTiming::RestoreRegisterEvent(asyncNotifyEvent, "IoAsyncNotify", __IoAsyncNotify);
}
void __IoShutdown() {
@ -987,8 +1012,9 @@ u32 sceIoOpenAsync(const char *filename, int flags, int mode)
DEBUG_LOG(HLE, "sceIoOpenAsync() sorta implemented");
u32 fd = sceIoOpen(filename, flags, mode);
// TODO: This can't actually have a callback yet, but if it's set before waiting, it should be called.
__IoCompleteAsyncIO(fd);
// TODO: Timing is very inconsistent. From ms0, 10ms - 20ms depending on filesize/dir depth? From umd, can take > 1s.
// For now let's aim low.
CoreTiming::ScheduleEvent(usToCycles(100), asyncNotifyEvent, fd);
// We have to return an fd here, which may have been destroyed when we reach Wait if it failed.
if (fd == ERROR_ERRNO_FILE_NOT_FOUND)