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dda_queue: optimize enqueue(). 

Suggestion by ItsDrone, see
http://forums.reprap.org/read.php?146,174364,174364#msg-174364
This commit is contained in:
Markus Hitter 2013-01-02 12:22:25 +01:00
parent f3e502c1ef
commit d51ec02cdf
2 changed files with 5 additions and 5 deletions
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4
dda_queue.c
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@ -91,10 +91,6 @@ void queue_step() {
/// add a move to the movebuffer /// add a move to the movebuffer
/// \note this function waits for space to be available if necessary, check queue_full() first if waiting is a problem /// \note this function waits for space to be available if necessary, check queue_full() first if waiting is a problem
/// This is the only function that modifies mb_head and it always called from outside an interrupt. /// This is the only function that modifies mb_head and it always called from outside an interrupt.
void enqueue(TARGET *t) {
enqueue_home(t, 0, 0);
}
void enqueue_home(TARGET *t, uint8_t endstop_check, uint8_t endstop_stop_cond) { void enqueue_home(TARGET *t, uint8_t endstop_check, uint8_t endstop_stop_cond) {
// don't call this function when the queue is full, but just in case, wait for a move to complete and free up the space for the passed target // don't call this function when the queue is full, but just in case, wait for a move to complete and free up the space for the passed target
while (queue_full()) while (queue_full())

6
dda_queue.h
View File

@ -28,9 +28,13 @@ void queue_step(void);
// add a new target to the queue // add a new target to the queue
// t == NULL means add a wait for target temp to the queue // t == NULL means add a wait for target temp to the queue
void enqueue(TARGET *t);
void enqueue_home(TARGET *t, uint8_t endstop_check, uint8_t endstop_stop_cond); void enqueue_home(TARGET *t, uint8_t endstop_check, uint8_t endstop_stop_cond);
static void enqueue(TARGET *) __attribute__ ((always_inline));
inline void enqueue(TARGET *t) {
enqueue_home(t, 0, 0);
}
// called from step timer when current move is complete // called from step timer when current move is complete
void next_move(void) __attribute__ ((hot)); void next_move(void) __attribute__ ((hot));