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sched/signal: Reduce the initial memory consumption 

1.Don't preallocate sigaction list since it's used only in the task context
2.Reduce the preserved item which is used only in the task context from 16 to 4
The total memory decrease from 1280B to 480B

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
Change-Id: Ib5d5a7365c7d443fc0e99c0d3ea943e85f67ca8c
This commit is contained in:
Xiang Xiao 2020-08-04 11:58:41 +08:00 committed by Alin Jerpelea
parent baa4da2d0f
commit 854276285c
2 changed files with 10 additions and 8 deletions
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2
sched/signal/sig_initialize.c
View File

@ -234,8 +234,6 @@ void nxsig_initialize(void)
SIG_ALLOC_IRQ);
DEBUGASSERT(g_sigpendingirqactionalloc != NULL);
nxsig_alloc_actionblock();
g_sigpendingsignalalloc =
nxsig_alloc_pendingsignalblock(&g_sigpendingsignal,
NUM_SIGNALS_PENDING,

16
sched/signal/signal.h
View File

@ -58,10 +58,10 @@
* allocate in a block
*/
#define NUM_SIGNAL_ACTIONS 16
#define NUM_PENDING_ACTIONS 16
#define NUM_SIGNAL_ACTIONS 4
#define NUM_PENDING_ACTIONS 4
#define NUM_PENDING_INT_ACTIONS 8
#define NUM_SIGNALS_PENDING 16
#define NUM_SIGNALS_PENDING 4
#define NUM_INT_SIGNALS_PENDING 8
/****************************************************************************
@ -158,6 +158,7 @@ extern sq_queue_t g_sigpendingirqsignal;
****************************************************************************/
/* Internal signal-related interfaces ***************************************/
/* Forward references */
struct task_group_s;
@ -187,7 +188,8 @@ sigset_t nxsig_pendingset(FAR struct tcb_s *stcb);
/* sig_dispatch.c */
int nxsig_tcbdispatch(FAR struct tcb_s *stcb, FAR siginfo_t *info);
int nxsig_tcbdispatch(FAR struct tcb_s *stcb,
FAR siginfo_t *info);
int nxsig_dispatch(pid_t pid, FAR siginfo_t *info);
/* sig_cleanup.c */
@ -205,11 +207,13 @@ void nxsig_wait_irq(FAR struct tcb_s *wtcb, int errcode);
FAR sigq_t *nxsig_alloc_pendingsigaction(void);
void nxsig_deliver(FAR struct tcb_s *stcb);
FAR sigactq_t *nxsig_find_action(FAR struct task_group_s *group, int signo);
FAR sigactq_t *nxsig_find_action(FAR struct task_group_s *group,
int signo);
int nxsig_lowest(FAR sigset_t *set);
void nxsig_release_pendingsigaction(FAR sigq_t *sigq);
void nxsig_release_pendingsignal(FAR sigpendq_t *sigpend);
FAR sigpendq_t *nxsig_remove_pendingsignal(FAR struct tcb_s *stcb, int signo);
FAR sigpendq_t *nxsig_remove_pendingsignal(FAR struct tcb_s *stcb,
int signo);
bool nxsig_unmask_pendingsignal(void);
#endif /* __SCHED_SIGNAL_SIGNAL_H */