Mirrors_Framework/nuttx
1
0
Fork 0
mirror of https://github.com/apache/nuttx.git synced 2026-06-06 16:50:55 +08:00
Code Issues Actions Packages Projects Releases Wiki Activity

Move waitpid() data structures to task group; The caller of waitpid() is now only awakened when the final thread of the task group exits

Browse Source 
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5608 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo
2013-02-04 16:02:20 +00:00
parent b1bf234bf3
commit ce722fd1e3
4 changed files with 66 additions and 24 deletions
Download Patch File Download Diff File Expand all files Collapse all files
include/nuttx/sched.h
+10 -5
View File
@@ -83,6 +83,8 @@
# define HAVE_TASK_GROUP 1
# elif defined(CONFIG_SCHED_ONEXIT) /* Group on_exit() function */
# define HAVE_TASK_GROUP 1
# elif defined(CONFIG_SCHED_WAITPID) /* Group waitpid() function */
# define HAVE_TASK_GROUP 1
# elif CONFIG_NFILE_DESCRIPTORS > 0 /* File descriptors */
# define HAVE_TASK_GROUP 1
# elif CONFIG_NFILE_STREAMS > 0 /* Standard C buffered I/O */
@@ -326,6 +328,14 @@ struct task_group_s
FAR struct child_status_s *tg_children; /* Head of a list of child status */
#endif
/* waitpid support ************************************************************/
/* Simple mechanism used only when there is no support for SIGCHLD */
#if defined(CONFIG_SCHED_WAITPID) && !defined(CONFIG_SCHED_HAVE_PARENT)
sem_t tg_exitsem; /* Support for waitpid */
int *tg_statloc; /* Location to return exit status */
#endif
/* Pthreads *******************************************************************/
#ifndef CONFIG_DISABLE_PTHREAD
@@ -408,11 +418,6 @@ struct _TCB
FAR void *starthookarg; /* The argument passed to the function */
#endif
#if defined(CONFIG_SCHED_WAITPID) && !defined(CONFIG_SCHED_HAVE_PARENT)
sem_t exitsem; /* Support for waitpid */
int *stat_loc; /* Location to return exit status */
#endif
uint8_t sched_priority; /* Current priority of the thread */
#ifdef CONFIG_PRIORITY_INHERITANCE