Hendrik Lipka / LcdWindow

Display text on LCD displays (even on multiple ones). Allow to create windows (frames) on display, and to combine them (split, add, duplicate, scroll). See http://mbed.org/users/hlipka/notebook/lcdwindow/ for more information.

Dependents:   Mbell

semaphore.h@9:2fe93daa2106, 2011-02-22 (annotated)

Committer:
hlipka
Date:
Tue Feb 22 22:57:44 2011 +0000
Revision:
9:2fe93daa2106
Parent:
3:e5d5e2fe4bf6 
fixed semaphore handling - should now be really thread safe (can be called from interrupts)

Who changed what in which revision?

UserRevisionLine numberNew contents of line
hlipka 3:e5d5e2fe4bf6 1 /**
hlipka 3:e5d5e2fe4bf6 2 * code from Igor Skochinsky
hlipka 3:e5d5e2fe4bf6 3 * taken from http://mbed.org/forum/mbed/post/799/
hlipka 3:e5d5e2fe4bf6 4 */
hlipka 3:e5d5e2fe4bf6 5
hlipka 3:e5d5e2fe4bf6 6 #ifndef SEMAPHORE_H_
hlipka 3:e5d5e2fe4bf6 7 #define SEMAPHORE_H_
hlipka 3:e5d5e2fe4bf6 8
hlipka 3:e5d5e2fe4bf6 9 class Semaphore
hlipka 3:e5d5e2fe4bf6 10 {
hlipka 3:e5d5e2fe4bf6 11 public:
hlipka 3:e5d5e2fe4bf6 12 // constructor
hlipka 3:e5d5e2fe4bf6 13 Semaphore();
hlipka 3:e5d5e2fe4bf6 14
hlipka 3:e5d5e2fe4bf6 15 // try to take the semaphore and return success
hlipka 3:e5d5e2fe4bf6 16 // by default block until succeeded
hlipka 3:e5d5e2fe4bf6 17 bool take(bool block = true);
hlipka 3:e5d5e2fe4bf6 18 // release the semaphore
hlipka 3:e5d5e2fe4bf6 19 void release();
hlipka 3:e5d5e2fe4bf6 20
hlipka 9:2fe93daa2106 21 static void setAbort(bool abort){_abort=abort;};
hlipka 9:2fe93daa2106 22
hlipka 3:e5d5e2fe4bf6 23 private:
hlipka 3:e5d5e2fe4bf6 24 enum { SemFree, SemTaken };
hlipka 3:e5d5e2fe4bf6 25 // semaphore value
hlipka 3:e5d5e2fe4bf6 26 int s;
hlipka 9:2fe93daa2106 27 static bool _abort;
hlipka 3:e5d5e2fe4bf6 28
hlipka 3:e5d5e2fe4bf6 29 };
hlipka 3:e5d5e2fe4bf6 30
hlipka 3:e5d5e2fe4bf6 31 #endif