| 20,11 → 20,11 |
|---|
| |
| /** |
| ------------ |
| CVS : $Id: nop.c,v 1.3 2003-01-07 17:07:50 pj Exp $ |
| CVS : $Id: nop.c,v 1.4 2003-11-05 15:04:14 giacomo Exp $ |
| |
| File: $File$ |
| Revision: $Revision: 1.3 $ |
| Last update: $Date: 2003-01-07 17:07:50 $ |
| Revision: $Revision: 1.4 $ |
| Last update: $Date: 2003-11-05 15:04:14 $ |
| ------------ |
| |
| Binary Semaphores. see nop.h for more details... |
| 116,16 → 116,17 |
|---|
| static int NOP_destroy(RLEVEL l, mutex_t *m) |
| { |
| // NOP_mutex_resource_des *lev = (NOP_mutex_resource_des *)(resource_table[l]); |
| SYS_FLAGS f; |
| |
| if ( ((NOP_mutex_t *)m->opt)->owner != NIL) |
| return (EBUSY); |
| |
| kern_cli(); |
| f = kern_fsave(); |
| if (m->opt) { |
| kern_free(m->opt,sizeof(NOP_mutex_t)); |
| m->opt = NULL; |
| } |
| kern_sti(); |
| kern_frestore(f); |
| |
| return 0; |
| } |
| 133,8 → 134,9 |
|---|
| static int NOP_lock(RLEVEL l, mutex_t *m) |
| { |
| NOP_mutex_t *p; |
| SYS_FLAGS f; |
| |
| kern_cli(); |
| f = kern_fsave(); |
| |
| p = (NOP_mutex_t *)m->opt; |
| if (!p) { |
| 146,7 → 148,7 |
|---|
| |
| if (p->owner == exec_shadow) { |
| /* the task already owns the mutex */ |
| kern_sti(); |
| kern_frestore(f); |
| return (EDEADLK); |
| } |
| |
| 171,7 → 173,7 |
|---|
| else { |
| /* the mutex is free, We can lock it! */ |
| p->owner = exec_shadow; |
| kern_sti(); |
| kern_frestore(f); |
| } |
| |
| return 0; |
| 180,8 → 182,9 |
|---|
| static int NOP_trylock(RLEVEL l, mutex_t *m) |
| { |
| NOP_mutex_t *p; |
| SYS_FLAGS f; |
| |
| kern_cli(); |
| f = kern_fsave(); |
| |
| p = (NOP_mutex_t *)m->opt; |
| if (!p) { |
| 193,13 → 196,13 |
|---|
| |
| if (p->owner != NIL) { |
| /* a task already owns the mutex */ |
| kern_sti(); |
| kern_frestore(f); |
| return (EBUSY); |
| } |
| else { |
| /* the mutex is free, We can lock it! */ |
| p->owner = exec_shadow; |
| kern_sti(); |
| kern_frestore(f); |
| } |
| |
| return 0; |
| 215,7 → 218,6 |
|---|
| |
| if (p->owner != exec_shadow) { |
| /* the mutex is owned by another task!!! */ |
| kern_sti(); |
| return (EPERM); |
| } |
| |