Lines Matching +full:ram +full:- +full:up

6  * @defgroup Kernel RT-Thread Kernel API
8  * The Kernel APIs are the core APIs of RT-Thread, which supports the following
10  * - Multi-thread management
11  * - Synchronization mechanisms
12  * - Inter-thread communication
13  * - Memory management
14  * - Asynchronous timer
26  * RT-Thread operating system supports multitask systems, which are based on thread
28  * - The scheduling is a full preemptive priority-based scheduling algorithm.
29  * - 8/32/256 priority levels are supported, in which 0 is the highest and 7/31/255 the lowest.
31  * - Threads running at same priority level are supported. The shared time-slice
32  * round-robin scheduling is used for this case.
33  * - The time of scheduler to choose the next highest ready thread is determinant.
34  * - There are four status in thread management
35  *	-# Initialization
36  *	-# Running/Ready
37  *	-# Blocked
38  *	-# Closed
39  * - The number of threads in the system is unlimited, only related with RAM.
46  * RT-Thread uses clock tick to implement shared time-slice scheduling.
49  * one-shot or periodic timeout.
59  * - thread
60  * - semaphore and mutex
61  * - event/fast event, mailbox, messagequeue
62  * - memory pool
63  * - timer
73  * @defgroup IPC Inter-Thread Communication
74  * @brief inter-thread communication
76  * RT-Thread operating system supports the traditional semaphore and mutex.
77  * - Mutex objects use inherited priority to prevent priority reversion.
78  * - The semaphore release action is safe for interrupt service routine.
82  * - RT_IPC_FLAG_FIFO
85  * - RT_IPC_FLAG_PRIO
89  * RT-Thread operating systems supports event/fast event, mail box and message queue.
90  * - The event mechanism is used to awake a thead by setting one or more corresponding
92  * - The fast event supports event thread queue. Once a one bit event occurs, the corresponding
93  * blocked thread can be found out timing accurately, then will be waked up.
94  * - In mailbox, the mail length is fixed to 4 byte, which is more effective than message queue.
95  * - The send action for communication facilities is also safe for interrupt service routine.
102  * RT-Thread operating system supports two types memory management:
103  * - Static memory pool management
104  * - Dynamic memory heap management.
110  * wake up.
114  * for large memory system. All of them has no real-time character.
125  * - open, open a device
126  * - close, close a device
127  * - read, read some data from a device
128  * - write, write some data to a device
129  * - control, send some control command to a device
136  * In order to trace and record RT-Thread activity in runtime, a hook mechanism
141  * - object hook, invoked at object created, deleted, taken and put etc.
142  * - scheduler hook, invoked at thread switch and idle thread loop.
143  * - memory hook, invoked when allocate or free memory block.
144  * - timer hook, invoked when timer is timeout.