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Ignore whitespace Rev 2803 → Rev 2804

/branches/tracing/kernel/generic/src/udebug/udebug.c
12,26 → 12,66
#include <udebug.h>
#include <arch.h>
 
void udebug_stopping_point(void)
void udebug_stoppable_begin(void)
{
if (TASK->stop_request) { /* locking! */
klog_printf("udebug_stopping_point");
IPC_SET_RETVAL(TASK->debug_begin_call->data, 0);
ipc_answer(&TASK->answerbox, TASK->debug_begin_call);
int nsc;
call_t *db_call;
 
spinlock_lock(&TASK->lock);
 
nsc = --TASK->not_stoppable_count;
db_call = TASK->debug_begin_call;
 
if (TASK->stop_request == true) {
klog_printf("udebug_stoppable_begin");
klog_printf(" - nsc := %d", nsc);
}
 
if (TASK->stop_request == true && nsc == 0) {
TASK->stop_request = false;
TASK->debug_begin_call = NULL;
spinlock_unlock(&TASK->lock);
 
IPC_SET_RETVAL(db_call->data, 0);
klog_printf("udebug_stoppable_begin/ipc_answer");
ipc_answer(&TASK->answerbox, db_call);
} else {
spinlock_unlock(&TASK->lock);
}
}
 
void udebug_stoppable_end(void)
{
restart:
spinlock_lock(&TASK->lock);
 
if (TASK->stop_request) {
TASK->debug_begin_call = NULL;
spinlock_unlock(&TASK->lock);
klog_printf("udebug_stoppable_end: waitq_sleep");
waitq_sleep(&THREAD->go_wq);
goto restart;
/* must try again - have to lose stoppability atomically */
} else {
++TASK->not_stoppable_count;
spinlock_unlock(&TASK->lock);
}
}
 
void udebug_syscall_event(void)
{
spinlock_lock(&TASK->lock);
/* being debugged + have go */
if (TASK->being_debugged && !TASK->stop_request) { /* locking! */
klog_printf("udebug_syscall_event");
IPC_SET_RETVAL(TASK->debug_go_call->data, 0);
klog_printf("udebug_syscall_event/ipc_answer");
 
ipc_answer(&TASK->answerbox, TASK->debug_go_call);
spinlock_unlock(&TASK->lock);
waitq_sleep(&THREAD->go_wq);
} else {
spinlock_unlock(&TASK->lock);
}
}