mutex implementation for m3 without rtx lib

typedef enum
{
        e_mutex_unlocked = 0,
        e_mutex_locked
} mutex_state ;

typedef struct
{
        mutex_state                     state ; // the status of the synchronization element
        int32s                          owner ; // a mutex has one owning task. other tasks must wait for it to be released
        priority_queue_t        blocked_tasks ; // // a queue of task id's that are waiting for a mutex to be released
} t_mutex ;

static t_mutex                     s_mutexes[MAX_MUTEXES] ; // system mutexs

typedef enum
{
        e_mutex_unlocked = 0,
        e_mutex_locked
} mutex_state ;

typedef struct
{
        mutex_state                     state ; // the status of the synchronization element
        int32s                          owner ; // a mutex has one owning task. other tasks must wait for it to be released
        priority_queue_t        blocked_tasks ; // // a queue of task id's that are waiting for a mutex to be released
} t_mutex ;

static t_mutex                     s_mutexes[MAX_MUTEXES] ; // system mutexs

You would, of course, need your _own_ kernel to use anything like this...

Thanks for the code see!