#include <config.h>
#include <sys/tm.h>
Include dependency graph for critsec.h:
Go to the source code of this file.
Data Structures | |
struct | critsec |
critical section data structure More... | |
Defines | |
#define | __critsec_h__ |
#define | initialize_critical_section(cs) (cs)->count=0 |
initialize critical section | |
#define | leave_critical_section(cs) locked_decrement(&(cs)->count) |
leave critical section | |
#define | destroy_critical_section(cs) |
destroy critical section (does nothing) | |
Typedefs | |
typedef critsec | critsec_t |
critical section type definition | |
Functions | |
int | locked_decrement (unsigned char *counter) |
decrement counter without interruption | |
wakeup_t | wait_critical_section (wakeup_t data) |
wakeup when critical section is available | |
int | enter_critical_section (critsec_t *cs) |
enter critical section |
Definition in file critsec.h.
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destroy critical section (does nothing) currently there are no resources that are dynamically allocated.
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initialize critical section sets count field of critical section to zero
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leave critical section allow other tasks to enter critical regions of code protected by this critical section.
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critical section type definition
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enter critical section block other tasks if they attempt to enter a region of code protected by the same critical section.
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decrement counter without interruption locks interrupts except NMI, decrements count then restores interrupts.
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wakeup when critical section is available wakeup function used to sleep a task until a critical section is available. called while processing an interrupt, so interrupts are already disabled.
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brickOS is released under the
Mozilla Public License.
Original code copyright 1998-2002 by the authors. |