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am 510951e9: am a8512a71: Always set the scheduling group when starting a new thread.

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Merge commit '510951e98bdb861130f38c087956cd05e0b41dcd'

* commit '510951e98bdb861130f38c087956cd05e0b41dcd':
  Always set the scheduling group when starting a new thread.
This commit is contained in:
Dianne Hackborn 2010-09-09 23:11:22 -07:00 committed by Android Git Automerger
commit 4181bd66fc
1 changed files with 23 additions and 16 deletions
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39
libs/utils/Threads.cpp
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@ -65,6 +65,20 @@ using namespace android;
typedef void* (*android_pthread_entry)(void*);
static pthread_once_t gDoSchedulingGroupOnce = PTHREAD_ONCE_INIT;
static bool gDoSchedulingGroup = true;
static void checkDoSchedulingGroup(void) {
char buf[PROPERTY_VALUE_MAX];
int len = property_get("debug.sys.noschedgroups", buf, "");
if (len > 0) {
int temp;
if (sscanf(buf, "%d", &temp) == 1) {
gDoSchedulingGroup = temp == 0;
}
}
}
struct thread_data_t {
thread_func_t entryFunction;
void* userData;
@ -80,6 +94,15 @@ struct thread_data_t {
char * name = t->threadName;
delete t;
setpriority(PRIO_PROCESS, 0, prio);
pthread_once(&gDoSchedulingGroupOnce, checkDoSchedulingGroup);
if (gDoSchedulingGroup) {
if (prio >= ANDROID_PRIORITY_BACKGROUND) {
set_sched_policy(androidGetTid(), SP_BACKGROUND);
} else {
set_sched_policy(androidGetTid(), SP_FOREGROUND);
}
}
if (name) {
#if defined(HAVE_PRCTL)
// Mac OS doesn't have this, and we build libutil for the host too
@ -281,22 +304,6 @@ pid_t androidGetTid()
#endif
}
#if defined(HAVE_PTHREADS)
static pthread_once_t gDoSchedulingGroupOnce = PTHREAD_ONCE_INIT;
static bool gDoSchedulingGroup = true;
static void checkDoSchedulingGroup(void) {
char buf[PROPERTY_VALUE_MAX];
int len = property_get("debug.sys.noschedgroups", buf, "");
if (len > 0) {
int temp;
if (sscanf(buf, "%d", &temp) == 1) {
gDoSchedulingGroup = temp == 0;
}
}
}
#endif
int androidSetThreadSchedulingGroup(pid_t tid, int grp)
{
if (grp > ANDROID_TGROUP_MAX || grp < 0) {