wut/include/coreinit/mutex.h

#pragma once
#include <wut.h>
#include "threadqueue.h"

#ifdef __cplusplus
extern "C" {
#endif

typedef struct OSThread;

typedef struct OSCondition OSCondition;
typedef struct OSMutex OSMutex;
typedef struct OSMutexLink OSMutexLink;

struct OSMutexLink
{
   OSMutex *next;
   OSMutex *prev;
};
CHECK_OFFSET(OSMutexLink, 0x00, next);
CHECK_OFFSET(OSMutexLink, 0x04, prev);
CHECK_SIZE(OSMutexLink, 0x8);

#define OS_MUTEX_TAG 0x6D557458u

struct OSMutex
{
   // OSMutex::Tag
   uint32_t tag;

   // Name set by OSInitMutexEx(mutex, name)
   const char *name;
   UNKNOWN(4);

   // Queue of threads waiting for this mutex to unlock
   OSThreadQueue queue;

   // Current owner of mutex
   OSThread *owner;

   // Current recursion lock count of mutex
   int32_t count;

   // Link used inside OSThread's mutex queue
   OSMutexLink link;
};
CHECK_OFFSET(OSMutex, 0x00, tag);
CHECK_OFFSET(OSMutex, 0x04, name);
CHECK_OFFSET(OSMutex, 0x0c, queue);
CHECK_OFFSET(OSMutex, 0x1c, owner);
CHECK_OFFSET(OSMutex, 0x20, count);
CHECK_OFFSET(OSMutex, 0x24, link);
CHECK_SIZE(OSMutex, 0x2c);

void
OSInitMutex(OSMutex *mutex);

void
OSInitMutexEx(OSMutex *mutex,
              const char *name);

void
OSLockMutex(OSMutex *mutex);

void
OSUnlockMutex(OSMutex *mutex);

BOOL
OSTryLockMutex(OSMutex *mutex);

#ifdef __cplusplus
}
#endif